diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj b/examples/example_win32_directx11/example_win32_directx11.vcxproj
index 9aa0986..166602a 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx11.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj b/examples/example_win32_directx11/example_win32_directx11.vcxproj
index 9aa0986..166602a 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx11.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
index ab1e3fb..1df6a0c 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_dx11.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj b/examples/example_win32_directx11/example_win32_directx11.vcxproj
index 9aa0986..166602a 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx11.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
index ab1e3fb..1df6a0c 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_dx11.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj b/examples/example_win32_directx12/example_win32_directx12.vcxproj
index c82f000..38c8335 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx12.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj b/examples/example_win32_directx11/example_win32_directx11.vcxproj
index 9aa0986..166602a 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx11.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
index ab1e3fb..1df6a0c 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_dx11.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj b/examples/example_win32_directx12/example_win32_directx12.vcxproj
index c82f000..38c8335 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx12.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
index 43fdeba..28a2557 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj b/examples/example_win32_directx11/example_win32_directx11.vcxproj
index 9aa0986..166602a 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx11.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
index ab1e3fb..1df6a0c 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_dx11.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj b/examples/example_win32_directx12/example_win32_directx12.vcxproj
index c82f000..38c8335 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx12.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
index 43fdeba..28a2557 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj b/examples/example_win32_directx9/example_win32_directx9.vcxproj
index ebc8a92..08f21c8 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj
@@ -143,6 +143,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx9.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj b/examples/example_win32_directx11/example_win32_directx11.vcxproj
index 9aa0986..166602a 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx11.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
index ab1e3fb..1df6a0c 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_dx11.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj b/examples/example_win32_directx12/example_win32_directx12.vcxproj
index c82f000..38c8335 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx12.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
index 43fdeba..28a2557 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj b/examples/example_win32_directx9/example_win32_directx9.vcxproj
index ebc8a92..08f21c8 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj
@@ -143,6 +143,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx9.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
index 2ac28d1..914cd26 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_dx9.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj b/examples/example_win32_directx11/example_win32_directx11.vcxproj
index 9aa0986..166602a 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx11.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
index ab1e3fb..1df6a0c 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_dx11.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj b/examples/example_win32_directx12/example_win32_directx12.vcxproj
index c82f000..38c8335 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx12.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
index 43fdeba..28a2557 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj b/examples/example_win32_directx9/example_win32_directx9.vcxproj
index ebc8a92..08f21c8 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj
@@ -143,6 +143,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx9.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
index 2ac28d1..914cd26 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_dx9.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/imgui.cpp b/imgui.cpp
index 0b3ea0f..28b986a 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (main code and documentation)
 
 // Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp for demo code.
@@ -19,32 +19,58 @@
 
 /*
 
- Index
- - MISSION STATEMENT
- - END-USER GUIDE
- - PROGRAMMER GUIDE (read me!)
-   - Read first
-   - How to update to a newer version of Dear ImGui
-   - Getting started with integrating Dear ImGui in your code/engine
-   - Using gamepad/keyboard navigation controls [BETA]
- - API BREAKING CHANGES (read me when you update!)
- - ISSUES & TODO LIST
- - FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
-   - How can I tell whether to dispatch mouse/keyboard to imgui or to my application?
-   - How can I display an image? What is ImTextureID, how does it works?
-   - How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.
-   - How can I use my own math types instead of ImVec2/ImVec4? 
-   - How can I load a different font than the default?
-   - How can I easily use icons in my application?
-   - How can I load multiple fonts?
-   - How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
-   - How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
-   - I integrated Dear ImGui in my engine and the text or lines are blurry..
-   - I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
-   - How can I help?
- - ISSUES & TODO-LIST
- - CODE
+Index of this file:
 
+DOCUMENTATION
+- MISSION STATEMENT
+- END-USER GUIDE
+- PROGRAMMER GUIDE (read me!)
+  - Read first
+  - How to update to a newer version of Dear ImGui
+  - Getting started with integrating Dear ImGui in your code/engine
+  - Using gamepad/keyboard navigation controls [BETA]
+- API BREAKING CHANGES (read me when you update!)
+- FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
+  - How can I tell whether to dispatch mouse/keyboard to imgui or to my application?
+  - How can I display an image? What is ImTextureID, how does it works?
+  - How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.
+  - How can I use my own math types instead of ImVec2/ImVec4? 
+  - How can I load a different font than the default?
+  - How can I easily use icons in my application?
+  - How can I load multiple fonts?
+  - How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
+  - How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
+  - I integrated Dear ImGui in my engine and the text or lines are blurry..
+  - I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
+  - How can I help?
+
+CODE
+- Forward Declarations
+- Context and Memory Allocators
+- User facing structures (ImGuiStyle, ImGuiIO)
+- Helper/Utilities (ImXXX functions, Color functions)
+- ImGuiStorage
+- ImGuiTextFilter
+- ImGuiTextBuffer
+- ImGuiListClipper
+- Main Code (most of the code! lots of stuff, needs tidying up)
+- Tooltips
+- Popups
+- Navigation
+- Columns
+- Drag and Drop
+- Logging
+- Settings
+- Platform Dependent Helpers
+- Metrics/Debug window
+
+*/
+
+//-----------------------------------------------------------------------------
+// Documentation
+//-----------------------------------------------------------------------------
+
+/*
 
  MISSION STATEMENT
  =================
@@ -472,11 +498,6 @@
  - 2014/08/28 (1.09) - changed the behavior of IO.PixelCenterOffset following various rendering fixes
 
 
- ISSUES & TODO-LIST
- ==================
- See TODO.txt
-
-
  FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
  ======================================
 
@@ -824,7 +845,6 @@
 // Visual Studio warnings
 #ifdef _MSC_VER
 #pragma warning (disable: 4127) // condition expression is constant
-#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
 #pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
 #endif
 
@@ -852,24 +872,6 @@
 #endif
 #endif
 
-static const ImS32  IM_S32_MIN = INT_MIN;    // (-2147483647 - 1), (0x80000000);
-static const ImS32  IM_S32_MAX = INT_MAX;    // (2147483647), (0x7FFFFFFF)
-static const ImU32  IM_U32_MIN = 0;
-static const ImU32  IM_U32_MAX = UINT_MAX;   // (0xFFFFFFFF)
-#ifdef LLONG_MIN
-static const ImS64  IM_S64_MIN = LLONG_MIN;  // (-9223372036854775807ll - 1ll);
-static const ImS64  IM_S64_MAX = LLONG_MAX;  // (9223372036854775807ll);
-#else
-static const ImS64  IM_S64_MIN = -9223372036854775807LL - 1;
-static const ImS64  IM_S64_MAX = 9223372036854775807LL;
-#endif
-static const ImU64  IM_U64_MIN = 0;
-#ifdef ULLONG_MAX
-static const ImU64  IM_U64_MAX = ULLONG_MAX; // (0xFFFFFFFFFFFFFFFFull);
-#else
-static const ImU64  IM_U64_MAX = (2ULL * 9223372036854775807LL + 1);
-#endif
-
 // When using CTRL+TAB (or Gamepad Square+L/R) we delay the visual a little in order to reduce visual noise doing a fast switch.
 static const float NAV_WINDOWING_HIGHLIGHT_DELAY   = 0.20f; // Time before the highlight and screen dimming starts fading in
 static const float NAV_WINDOWING_LIST_APPEAR_DELAY = 0.15f; // Time before the window list starts to appear
@@ -884,7 +886,6 @@
 static void             SetWindowCollapsed(ImGuiWindow* window, bool collapsed, ImGuiCond cond);
 static void             FindHoveredWindow();
 static ImGuiWindow*     CreateNewWindow(const char* name, ImVec2 size, ImGuiWindowFlags flags);
-static ImGuiWindowSettings* CreateNewWindowSettings(const char* name);
 static void             CheckStacksSize(ImGuiWindow* window, bool write);
 static ImVec2           CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window, bool snap_on_edges);
 
@@ -894,13 +895,15 @@
 
 static ImRect           GetViewportRect();
 
-static bool             InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data);
-static int              InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end);
-static ImVec2           InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL, ImVec2* out_offset = NULL, bool stop_on_new_line = false);
+// Settings
+static void*            SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name);
+static void             SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line);
+static void             SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf);
 
-static inline int       DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format);
-static void             DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg_1, const void* arg_2);
-static bool             DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format);
+// Platform Dependents default implementation for IO functions
+static const char*      GetClipboardTextFn_DefaultImpl(void* user_data);
+static void             SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
+static void             ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
 
 namespace ImGui
 {
@@ -909,29 +912,20 @@
 static void             NavUpdate();
 static void             NavUpdateWindowing();
 static void             NavUpdateWindowingList();
+static void             NavUpdateMoveResult();
+static float            NavUpdatePageUpPageDown(int allowed_dir_flags);
+static inline void      NavUpdateAnyRequestFlag();
 static void             NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id);
+static ImVec2           NavCalcPreferredRefPos();
+static void             NavSaveLastChildNavWindow(ImGuiWindow* nav_window);
+static ImGuiWindow*     NavRestoreLastChildNavWindow(ImGuiWindow* window);
 
 static void             UpdateMouseInputs();
 static void             UpdateMouseWheel();
 static void             UpdateManualResize(ImGuiWindow* window, const ImVec2& size_auto_fit, int* border_held, int resize_grip_count, ImU32 resize_grip_col[4]);
-
-// Template widget behaviors
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool             DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power);
-
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool             SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb);
 }
 
 //-----------------------------------------------------------------------------
-// Platform dependent default implementations
-//-----------------------------------------------------------------------------
-
-static const char*      GetClipboardTextFn_DefaultImpl(void* user_data);
-static void             SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
-static void             ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
-
-//-----------------------------------------------------------------------------
 // Context and Memory Allocators
 //-----------------------------------------------------------------------------
 
@@ -961,7 +955,7 @@
 static void*    GImAllocatorUserData = NULL;
 
 //-----------------------------------------------------------------------------
-// User facing structures
+// User facing main structures
 //-----------------------------------------------------------------------------
 
 ImGuiStyle::ImGuiStyle()
@@ -1106,7 +1100,7 @@
 }
 
 //-----------------------------------------------------------------------------
-// HELPERS
+// HELPERS/UTILITIES
 //-----------------------------------------------------------------------------
 
 ImVec2 ImLineClosestPoint(const ImVec2& a, const ImVec2& b, const ImVec2& p)
@@ -1245,19 +1239,6 @@
     buf[p - p_start] = 0;                   // Zero terminate
 }
 
-template<typename TYPE>
-static const char* ImAtoi(const char* src, TYPE* output)
-{
-    int negative = 0;
-    if (*src == '-') { negative = 1; src++; }
-    if (*src == '+') { src++; }
-    TYPE v = 0;
-    while (*src >= '0' && *src <= '9')
-        v = (v * 10) + (*src++ - '0');
-    *output = negative ? -v : v;
-    return src;
-}
-
 // A) MSVC version appears to return -1 on overflow, whereas glibc appears to return total count (which may be >= buf_size).
 // Ideally we would test for only one of those limits at runtime depending on the behavior the vsnprintf(), but trying to deduct it at compile time sounds like a pandora can of worm.
 // B) When buf==NULL vsnprintf() will return the output size.
@@ -1338,7 +1319,7 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImText* helpers
+// HELPERS/UTILITIES (ImText* helpers)
 //-----------------------------------------------------------------------------
 
 // Convert UTF-8 to 32-bits character, process single character input.
@@ -1520,109 +1501,6 @@
     return bytes_count;
 }
 
-ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
-{
-    float s = 1.0f/255.0f;
-    return ImVec4(
-        ((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
-}
-
-ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
-{
-    ImU32 out;
-    out  = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
-    return out;
-}
-
-ImU32 ImGui::GetColorU32(ImGuiCol idx, float alpha_mul)
-{
-    ImGuiStyle& style = GImGui->Style;
-    ImVec4 c = style.Colors[idx];
-    c.w *= style.Alpha * alpha_mul;
-    return ColorConvertFloat4ToU32(c);
-}
-
-ImU32 ImGui::GetColorU32(const ImVec4& col)
-{
-    ImGuiStyle& style = GImGui->Style;
-    ImVec4 c = col;
-    c.w *= style.Alpha;
-    return ColorConvertFloat4ToU32(c);
-}
-
-const ImVec4& ImGui::GetStyleColorVec4(ImGuiCol idx)
-{
-    ImGuiStyle& style = GImGui->Style;
-    return style.Colors[idx];
-}
-
-ImU32 ImGui::GetColorU32(ImU32 col)
-{
-    float style_alpha = GImGui->Style.Alpha;
-    if (style_alpha >= 1.0f)
-        return col;
-    ImU32 a = (col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT;
-    a = (ImU32)(a * style_alpha); // We don't need to clamp 0..255 because Style.Alpha is in 0..1 range.
-    return (col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
-}
-
-// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
-// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
-void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
-{
-    float K = 0.f;
-    if (g < b)
-    {
-        ImSwap(g, b);
-        K = -1.f;
-    }
-    if (r < g)
-    {
-        ImSwap(r, g);
-        K = -2.f / 6.f - K;
-    }
-
-    const float chroma = r - (g < b ? g : b);
-    out_h = ImFabs(K + (g - b) / (6.f * chroma + 1e-20f));
-    out_s = chroma / (r + 1e-20f);
-    out_v = r;
-}
-
-// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
-// also http://en.wikipedia.org/wiki/HSL_and_HSV
-void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
-{
-    if (s == 0.0f)
-    {
-        // gray
-        out_r = out_g = out_b = v;
-        return;
-    }
-
-    h = ImFmod(h, 1.0f) / (60.0f/360.0f);
-    int   i = (int)h;
-    float f = h - (float)i;
-    float p = v * (1.0f - s);
-    float q = v * (1.0f - s * f);
-    float t = v * (1.0f - s * (1.0f - f));
-
-    switch (i)
-    {
-    case 0: out_r = v; out_g = t; out_b = p; break;
-    case 1: out_r = q; out_g = v; out_b = p; break;
-    case 2: out_r = p; out_g = v; out_b = t; break;
-    case 3: out_r = p; out_g = q; out_b = v; break;
-    case 4: out_r = t; out_g = p; out_b = v; break;
-    case 5: default: out_r = v; out_g = p; out_b = q; break;
-    }
-}
-
 FILE* ImFileOpen(const char* filename, const char* mode)
 {
 #if defined(_WIN32) && !defined(__CYGWIN__)
@@ -1682,6 +1560,113 @@
 }
 
 //-----------------------------------------------------------------------------
+// COLOR FUNCTIONS
+//-----------------------------------------------------------------------------
+
+ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
+{
+    float s = 1.0f/255.0f;
+    return ImVec4(
+        ((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
+}
+
+ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
+{
+    ImU32 out;
+    out  = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
+    return out;
+}
+
+// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
+// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
+void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
+{
+    float K = 0.f;
+    if (g < b)
+    {
+        ImSwap(g, b);
+        K = -1.f;
+    }
+    if (r < g)
+    {
+        ImSwap(r, g);
+        K = -2.f / 6.f - K;
+    }
+
+    const float chroma = r - (g < b ? g : b);
+    out_h = ImFabs(K + (g - b) / (6.f * chroma + 1e-20f));
+    out_s = chroma / (r + 1e-20f);
+    out_v = r;
+}
+
+// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
+// also http://en.wikipedia.org/wiki/HSL_and_HSV
+void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
+{
+    if (s == 0.0f)
+    {
+        // gray
+        out_r = out_g = out_b = v;
+        return;
+    }
+
+    h = ImFmod(h, 1.0f) / (60.0f/360.0f);
+    int   i = (int)h;
+    float f = h - (float)i;
+    float p = v * (1.0f - s);
+    float q = v * (1.0f - s * f);
+    float t = v * (1.0f - s * (1.0f - f));
+
+    switch (i)
+    {
+    case 0: out_r = v; out_g = t; out_b = p; break;
+    case 1: out_r = q; out_g = v; out_b = p; break;
+    case 2: out_r = p; out_g = v; out_b = t; break;
+    case 3: out_r = p; out_g = q; out_b = v; break;
+    case 4: out_r = t; out_g = p; out_b = v; break;
+    case 5: default: out_r = v; out_g = p; out_b = q; break;
+    }
+}
+
+ImU32 ImGui::GetColorU32(ImGuiCol idx, float alpha_mul)
+{
+    ImGuiStyle& style = GImGui->Style;
+    ImVec4 c = style.Colors[idx];
+    c.w *= style.Alpha * alpha_mul;
+    return ColorConvertFloat4ToU32(c);
+}
+
+ImU32 ImGui::GetColorU32(const ImVec4& col)
+{
+    ImGuiStyle& style = GImGui->Style;
+    ImVec4 c = col;
+    c.w *= style.Alpha;
+    return ColorConvertFloat4ToU32(c);
+}
+
+const ImVec4& ImGui::GetStyleColorVec4(ImGuiCol idx)
+{
+    ImGuiStyle& style = GImGui->Style;
+    return style.Colors[idx];
+}
+
+ImU32 ImGui::GetColorU32(ImU32 col)
+{
+    float style_alpha = GImGui->Style.Alpha;
+    if (style_alpha >= 1.0f)
+        return col;
+    ImU32 a = (col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT;
+    a = (ImU32)(a * style_alpha); // We don't need to clamp 0..255 because Style.Alpha is in 0..1 range.
+    return (col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
+}
+
+//-----------------------------------------------------------------------------
 // ImGuiStorage
 // Helper: Key->value storage
 //-----------------------------------------------------------------------------
@@ -1983,51 +1968,6 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImGuiSimpleColumns (internal use only)
-//-----------------------------------------------------------------------------
-
-ImGuiMenuColumns::ImGuiMenuColumns()
-{
-    Count = 0;
-    Spacing = Width = NextWidth = 0.0f;
-    memset(Pos, 0, sizeof(Pos));
-    memset(NextWidths, 0, sizeof(NextWidths));
-}
-
-void ImGuiMenuColumns::Update(int count, float spacing, bool clear)
-{
-    IM_ASSERT(Count <= IM_ARRAYSIZE(Pos));
-    Count = count;
-    Width = NextWidth = 0.0f;
-    Spacing = spacing;
-    if (clear) memset(NextWidths, 0, sizeof(NextWidths));
-    for (int i = 0; i < Count; i++)
-    {
-        if (i > 0 && NextWidths[i] > 0.0f)
-            Width += Spacing;
-        Pos[i] = (float)(int)Width;
-        Width += NextWidths[i];
-        NextWidths[i] = 0.0f;
-    }
-}
-
-float ImGuiMenuColumns::DeclColumns(float w0, float w1, float w2) // not using va_arg because they promote float to double
-{
-    NextWidth = 0.0f;
-    NextWidths[0] = ImMax(NextWidths[0], w0);
-    NextWidths[1] = ImMax(NextWidths[1], w1);
-    NextWidths[2] = ImMax(NextWidths[2], w2);
-    for (int i = 0; i < 3; i++)
-        NextWidth += NextWidths[i] + ((i > 0 && NextWidths[i] > 0.0f) ? Spacing : 0.0f);
-    return ImMax(Width, NextWidth);
-}
-
-float ImGuiMenuColumns::CalcExtraSpace(float avail_w)
-{
-    return ImMax(0.0f, avail_w - Width);
-}
-
-//-----------------------------------------------------------------------------
 // ImGuiListClipper
 //-----------------------------------------------------------------------------
 
@@ -2112,9 +2052,11 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImGuiWindow
+// MAIN CODE
+// (this category is still too large and badly ordered, needs some tidying up)
 //-----------------------------------------------------------------------------
 
+// ImGuiWindow is mostly a dumb struct. It merely has a constructor and a few helper methods
 ImGuiWindow::ImGuiWindow(ImGuiContext* context, const char* name)
     : DrawListInst(&context->DrawListSharedData)
 {
@@ -2222,10 +2164,6 @@
     return id;
 }
 
-//-----------------------------------------------------------------------------
-// Internal API exposed in imgui_internal.h
-//-----------------------------------------------------------------------------
-
 static void SetCurrentWindow(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -2393,285 +2331,6 @@
     ItemSize(bb.GetSize(), text_offset_y);
 }
 
-static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
-{
-    if (ImFabs(dx) > ImFabs(dy))
-        return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
-    return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
-}
-
-static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
-{
-    if (a1 < b0)
-        return a1 - b0;
-    if (b1 < a0)
-        return a0 - b1;
-    return 0.0f;
-}
-
-static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
-{
-    if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
-    {
-        r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
-        r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
-    }
-    else
-    {
-        r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
-        r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
-    }
-}
-
-// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
-static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    if (g.NavLayer != window->DC.NavLayerCurrent)
-        return false;
-
-    const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
-    g.NavScoringCount++;
-
-    // When entering through a NavFlattened border, we consider child window items as fully clipped for scoring
-    if (window->ParentWindow == g.NavWindow)
-    {
-        IM_ASSERT((window->Flags | g.NavWindow->Flags) & ImGuiWindowFlags_NavFlattened);
-        if (!window->ClipRect.Contains(cand))
-            return false;
-        cand.ClipWithFull(window->ClipRect); // This allows the scored item to not overlap other candidates in the parent window
-    }
-
-    // We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
-    // For example, this ensure that items in one column are not reached when moving vertically from items in another column.
-    NavClampRectToVisibleAreaForMoveDir(g.NavMoveClipDir, cand, window->ClipRect);
-
-    // Compute distance between boxes
-    // FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
-    float dbx = NavScoreItemDistInterval(cand.Min.x, cand.Max.x, curr.Min.x, curr.Max.x);
-    float dby = NavScoreItemDistInterval(ImLerp(cand.Min.y, cand.Max.y, 0.2f), ImLerp(cand.Min.y, cand.Max.y, 0.8f), ImLerp(curr.Min.y, curr.Max.y, 0.2f), ImLerp(curr.Min.y, curr.Max.y, 0.8f)); // Scale down on Y to keep using box-distance for vertically touching items
-    if (dby != 0.0f && dbx != 0.0f)
-       dbx = (dbx/1000.0f) + ((dbx > 0.0f) ? +1.0f : -1.0f);
-    float dist_box = ImFabs(dbx) + ImFabs(dby);
-
-    // Compute distance between centers (this is off by a factor of 2, but we only compare center distances with each other so it doesn't matter)
-    float dcx = (cand.Min.x + cand.Max.x) - (curr.Min.x + curr.Max.x);
-    float dcy = (cand.Min.y + cand.Max.y) - (curr.Min.y + curr.Max.y);
-    float dist_center = ImFabs(dcx) + ImFabs(dcy); // L1 metric (need this for our connectedness guarantee)
-
-    // Determine which quadrant of 'curr' our candidate item 'cand' lies in based on distance
-    ImGuiDir quadrant;
-    float dax = 0.0f, day = 0.0f, dist_axial = 0.0f;
-    if (dbx != 0.0f || dby != 0.0f)
-    {
-        // For non-overlapping boxes, use distance between boxes
-        dax = dbx;
-        day = dby;
-        dist_axial = dist_box;
-        quadrant = NavScoreItemGetQuadrant(dbx, dby);
-    }
-    else if (dcx != 0.0f || dcy != 0.0f)
-    {
-        // For overlapping boxes with different centers, use distance between centers
-        dax = dcx;
-        day = dcy;
-        dist_axial = dist_center;
-        quadrant = NavScoreItemGetQuadrant(dcx, dcy);
-    }
-    else
-    {
-        // Degenerate case: two overlapping buttons with same center, break ties arbitrarily (note that LastItemId here is really the _previous_ item order, but it doesn't matter)
-        quadrant = (window->DC.LastItemId < g.NavId) ? ImGuiDir_Left : ImGuiDir_Right;
-    }
-
-#if IMGUI_DEBUG_NAV_SCORING
-    char buf[128];
-    if (ImGui::IsMouseHoveringRect(cand.Min, cand.Max))
-    {
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "dbox (%.2f,%.2f->%.4f)\ndcen (%.2f,%.2f->%.4f)\nd (%.2f,%.2f->%.4f)\nnav %c, quadrant %c", dbx, dby, dist_box, dcx, dcy, dist_center, dax, day, dist_axial, "WENS"[g.NavMoveDir], "WENS"[quadrant]);
-        ImDrawList* draw_list = ImGui::GetOverlayDrawList();
-        draw_list->AddRect(curr.Min, curr.Max, IM_COL32(255,200,0,100));
-        draw_list->AddRect(cand.Min, cand.Max, IM_COL32(255,255,0,200));
-        draw_list->AddRectFilled(cand.Max-ImVec2(4,4), cand.Max+ImGui::CalcTextSize(buf)+ImVec2(4,4), IM_COL32(40,0,0,150));
-        draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Max, ~0U, buf);
-    }
-    else if (g.IO.KeyCtrl) // Hold to preview score in matching quadrant. Press C to rotate.
-    {
-        if (IsKeyPressedMap(ImGuiKey_C)) { g.NavMoveDirLast = (ImGuiDir)((g.NavMoveDirLast + 1) & 3); g.IO.KeysDownDuration[g.IO.KeyMap[ImGuiKey_C]] = 0.01f; }
-        if (quadrant == g.NavMoveDir)
-        {
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "%.0f/%.0f", dist_box, dist_center);
-            ImDrawList* draw_list = ImGui::GetOverlayDrawList();
-            draw_list->AddRectFilled(cand.Min, cand.Max, IM_COL32(255, 0, 0, 200));
-            draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Min, IM_COL32(255, 255, 255, 255), buf);
-        }
-    }
- #endif
-
-    // Is it in the quadrant we're interesting in moving to?
-    bool new_best = false;
-    if (quadrant == g.NavMoveDir)
-    {
-        // Does it beat the current best candidate?
-        if (dist_box < result->DistBox)
-        {
-            result->DistBox = dist_box;
-            result->DistCenter = dist_center;
-            return true;
-        }
-        if (dist_box == result->DistBox)
-        {
-            // Try using distance between center points to break ties
-            if (dist_center < result->DistCenter)
-            {
-                result->DistCenter = dist_center;
-                new_best = true;
-            }
-            else if (dist_center == result->DistCenter)
-            {
-                // Still tied! we need to be extra-careful to make sure everything gets linked properly. We consistently break ties by symbolically moving "later" items
-                // (with higher index) to the right/downwards by an infinitesimal amount since we the current "best" button already (so it must have a lower index),
-                // this is fairly easy. This rule ensures that all buttons with dx==dy==0 will end up being linked in order of appearance along the x axis.
-                if (((g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down) ? dby : dbx) < 0.0f) // moving bj to the right/down decreases distance
-                    new_best = true;
-            }
-        }
-    }
-
-    // Axial check: if 'curr' has no link at all in some direction and 'cand' lies roughly in that direction, add a tentative link. This will only be kept if no "real" matches
-    // are found, so it only augments the graph produced by the above method using extra links. (important, since it doesn't guarantee strong connectedness)
-    // This is just to avoid buttons having no links in a particular direction when there's a suitable neighbor. you get good graphs without this too.
-    // 2017/09/29: FIXME: This now currently only enabled inside menu bars, ideally we'd disable it everywhere. Menus in particular need to catch failure. For general navigation it feels awkward.
-    // Disabling it may lead to disconnected graphs when nodes are very spaced out on different axis. Perhaps consider offering this as an option?
-    if (result->DistBox == FLT_MAX && dist_axial < result->DistAxial)  // Check axial match
-        if (g.NavLayer == 1 && !(g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
-            if ((g.NavMoveDir == ImGuiDir_Left && dax < 0.0f) || (g.NavMoveDir == ImGuiDir_Right && dax > 0.0f) || (g.NavMoveDir == ImGuiDir_Up && day < 0.0f) || (g.NavMoveDir == ImGuiDir_Down && day > 0.0f))
-            {
-                result->DistAxial = dist_axial;
-                new_best = true;
-            }
-
-    return new_best;
-}
-
-static void NavSaveLastChildNavWindow(ImGuiWindow* child_window)
-{
-    ImGuiWindow* parent_window = child_window;
-    while (parent_window && (parent_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (parent_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
-        parent_window = parent_window->ParentWindow;
-    if (parent_window && parent_window != child_window)
-        parent_window->NavLastChildNavWindow = child_window;
-}
-
-// Call when we are expected to land on Layer 0 after FocusWindow()
-static ImGuiWindow* NavRestoreLastChildNavWindow(ImGuiWindow* window)
-{
-    return window->NavLastChildNavWindow ? window->NavLastChildNavWindow : window;
-}
-
-static void NavRestoreLayer(int layer)
-{
-    ImGuiContext& g = *GImGui;
-    g.NavLayer = layer;
-    if (layer == 0)
-        g.NavWindow = NavRestoreLastChildNavWindow(g.NavWindow);
-    if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
-        ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
-    else
-        ImGui::NavInitWindow(g.NavWindow, true);
-}
-
-static inline void NavUpdateAnyRequestFlag()
-{
-    ImGuiContext& g = *GImGui;
-    g.NavAnyRequest = g.NavMoveRequest || g.NavInitRequest || (IMGUI_DEBUG_NAV_SCORING && g.NavWindow != NULL);
-    if (g.NavAnyRequest)
-        IM_ASSERT(g.NavWindow != NULL);
-}
-
-bool ImGui::NavMoveRequestButNoResultYet()
-{
-    ImGuiContext& g = *GImGui;
-    return g.NavMoveRequest && g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0;
-}
-
-void ImGui::NavMoveRequestCancel()
-{
-    ImGuiContext& g = *GImGui;
-    g.NavMoveRequest = false;
-    NavUpdateAnyRequestFlag();
-}
-
-// We get there when either NavId == id, or when g.NavAnyRequest is set (which is updated by NavUpdateAnyRequestFlag above)
-static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    //if (!g.IO.NavActive)  // [2017/10/06] Removed this possibly redundant test but I am not sure of all the side-effects yet. Some of the feature here will need to work regardless of using a _NoNavInputs flag.
-    //    return;
-
-    const ImGuiItemFlags item_flags = window->DC.ItemFlags;
-    const ImRect nav_bb_rel(nav_bb.Min - window->Pos, nav_bb.Max - window->Pos);
-
-    // Process Init Request
-    if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
-    {
-        // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
-        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
-        {
-            g.NavInitResultId = id;
-            g.NavInitResultRectRel = nav_bb_rel;
-        }
-        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
-        {
-            g.NavInitRequest = false; // Found a match, clear request
-            NavUpdateAnyRequestFlag();
-        }
-    }
-
-    // Process Move Request (scoring for navigation)
-    // FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
-    if ((g.NavId != id || (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AllowCurrentNavId)) && !(item_flags & ImGuiItemFlags_NoNav))
-    {
-        ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
-#if IMGUI_DEBUG_NAV_SCORING
-        // [DEBUG] Score all items in NavWindow at all times
-        if (!g.NavMoveRequest)
-            g.NavMoveDir = g.NavMoveDirLast;
-        bool new_best = NavScoreItem(result, nav_bb) && g.NavMoveRequest;
-#else
-        bool new_best = g.NavMoveRequest && NavScoreItem(result, nav_bb);
-#endif
-        if (new_best)
-        {
-            result->ID = id;
-            result->Window = window;
-            result->RectRel = nav_bb_rel;
-        }
-
-        const float VISIBLE_RATIO = 0.70f;
-        if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
-            if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
-                if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
-                {
-                    result = &g.NavMoveResultLocalVisibleSet;
-                    result->ID = id;
-                    result->Window = window;
-                    result->RectRel = nav_bb_rel;
-                }
-    }
-
-    // Update window-relative bounding box of navigated item
-    if (g.NavId == id)
-    {
-        g.NavWindow = window;                                           // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
-        g.NavLayer = window->DC.NavLayerCurrent;
-        g.NavIdIsAlive = true;
-        g.NavIdTabCounter = window->FocusIdxTabCounter;
-        window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel;    // Store item bounding box (relative to window position)
-    }
-}
-
 // Declare item bounding box for clipping and interaction.
 // Note that the size can be different than the one provided to ItemSize(). Typically, widgets that spread over available surface
 // declare their minimum size requirement to ItemSize() and then use a larger region for drawing/interaction, which is passed to ItemAdd().
@@ -2972,662 +2631,6 @@
     return &GImGui->DrawListSharedData;
 }
 
-// This needs to be called before we submit any widget (aka in or before Begin)
-void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(window == g.NavWindow);
-    bool init_for_nav = false;
-    if (!(window->Flags & ImGuiWindowFlags_NoNavInputs))
-        if (!(window->Flags & ImGuiWindowFlags_ChildWindow) || (window->Flags & ImGuiWindowFlags_Popup) || (window->NavLastIds[0] == 0) || force_reinit)
-            init_for_nav = true;
-    if (init_for_nav)
-    {
-        SetNavID(0, g.NavLayer);
-        g.NavInitRequest = true;
-        g.NavInitRequestFromMove = false;
-        g.NavInitResultId = 0;
-        g.NavInitResultRectRel = ImRect();
-        NavUpdateAnyRequestFlag();
-    }
-    else
-    {
-        g.NavId = window->NavLastIds[0];
-    }
-}
-
-static ImVec2 NavCalcPreferredRefPos()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow)
-        return ImFloor(g.IO.MousePos);
-
-    // When navigation is active and mouse is disabled, decide on an arbitrary position around the bottom left of the currently navigated item
-    const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
-    ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x*4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
-    ImRect visible_rect = GetViewportRect();
-    return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
-}
-
-static int FindWindowIndex(ImGuiWindow* window) // FIXME-OPT O(N)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = g.Windows.Size-1; i >= 0; i--)
-        if (g.Windows[i] == window)
-            return i;
-    return -1;
-}
-
-static ImGuiWindow* FindWindowNavFocusable(int i_start, int i_stop, int dir) // FIXME-OPT O(N)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = i_start; i >= 0 && i < g.Windows.Size && i != i_stop; i += dir)
-        if (ImGui::IsWindowNavFocusable(g.Windows[i]))
-            return g.Windows[i];
-    return NULL;
-}
-
-float ImGui::GetNavInputAmount(ImGuiNavInput n, ImGuiInputReadMode mode)
-{
-    ImGuiContext& g = *GImGui;
-    if (mode == ImGuiInputReadMode_Down)
-        return g.IO.NavInputs[n];                         // Instant, read analog input (0.0f..1.0f, as provided by user)
-
-    const float t = g.IO.NavInputsDownDuration[n];
-    if (t < 0.0f && mode == ImGuiInputReadMode_Released)  // Return 1.0f when just released, no repeat, ignore analog input.
-        return (g.IO.NavInputsDownDurationPrev[n] >= 0.0f ? 1.0f : 0.0f);
-    if (t < 0.0f)
-        return 0.0f;
-    if (mode == ImGuiInputReadMode_Pressed)               // Return 1.0f when just pressed, no repeat, ignore analog input.
-        return (t == 0.0f) ? 1.0f : 0.0f;
-    if (mode == ImGuiInputReadMode_Repeat)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
-    if (mode == ImGuiInputReadMode_RepeatSlow)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 1.00f, g.IO.KeyRepeatRate * 2.00f);
-    if (mode == ImGuiInputReadMode_RepeatFast)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.30f);
-    return 0.0f;
-}
-
-ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor, float fast_factor)
-{
-    ImVec2 delta(0.0f, 0.0f);
-    if (dir_sources & ImGuiNavDirSourceFlags_Keyboard)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_KeyRight_, mode)   - GetNavInputAmount(ImGuiNavInput_KeyLeft_,   mode), GetNavInputAmount(ImGuiNavInput_KeyDown_,   mode) - GetNavInputAmount(ImGuiNavInput_KeyUp_,   mode));
-    if (dir_sources & ImGuiNavDirSourceFlags_PadDPad)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_DpadRight, mode)   - GetNavInputAmount(ImGuiNavInput_DpadLeft,   mode), GetNavInputAmount(ImGuiNavInput_DpadDown,   mode) - GetNavInputAmount(ImGuiNavInput_DpadUp,   mode));
-    if (dir_sources & ImGuiNavDirSourceFlags_PadLStick)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_LStickRight, mode) - GetNavInputAmount(ImGuiNavInput_LStickLeft, mode), GetNavInputAmount(ImGuiNavInput_LStickDown, mode) - GetNavInputAmount(ImGuiNavInput_LStickUp, mode));
-    if (slow_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakSlow))
-        delta *= slow_factor;
-    if (fast_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakFast))
-        delta *= fast_factor;
-    return delta;
-}
-
-static void NavUpdateWindowingHighlightWindow(int focus_change_dir)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavWindowingTarget);
-    if (g.NavWindowingTarget->Flags & ImGuiWindowFlags_Modal)
-        return;
-
-    const int i_current = FindWindowIndex(g.NavWindowingTarget);
-    ImGuiWindow* window_target = FindWindowNavFocusable(i_current + focus_change_dir, -INT_MAX, focus_change_dir);
-    if (!window_target)
-        window_target = FindWindowNavFocusable((focus_change_dir < 0) ? (g.Windows.Size - 1) : 0, i_current, focus_change_dir);
-    if (window_target) // Don't reset windowing target if there's a single window in the list
-        g.NavWindowingTarget = g.NavWindowingTargetAnim = window_target;
-    g.NavWindowingToggleLayer = false;
-}
-
-// Window management mode (hold to: change focus/move/resize, tap to: toggle menu layer)
-static void ImGui::NavUpdateWindowing()
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* apply_focus_window = NULL;
-    bool apply_toggle_layer = false;
-
-    ImGuiWindow* modal_window = GetFrontMostPopupModal();
-    if (modal_window != NULL)
-    {
-        g.NavWindowingTarget = NULL;
-        return;
-    }
-
-    // Fade out
-    if (g.NavWindowingTargetAnim && g.NavWindowingTarget == NULL)
-    {
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha - g.IO.DeltaTime * 10.0f, 0.0f);
-        if (g.DimBgRatio <= 0.0f && g.NavWindowingHighlightAlpha <= 0.0f)
-            g.NavWindowingTargetAnim = NULL;
-    }
-
-    // Start CTRL-TAB or Square+L/R window selection
-    bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
-    bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
-    if (start_windowing_with_gamepad || start_windowing_with_keyboard)
-        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.Windows.Size - 1, -INT_MAX, -1))
-        {
-            g.NavWindowingTarget = g.NavWindowingTargetAnim = window;
-            g.NavWindowingTimer = g.NavWindowingHighlightAlpha = 0.0f;
-            g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
-            g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
-        }
-
-    // Gamepad update
-    g.NavWindowingTimer += g.IO.DeltaTime;
-    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavGamepad)
-    {
-        // Highlight only appears after a brief time holding the button, so that a fast tap on PadMenu (to toggle NavLayer) doesn't add visual noise
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f));
-
-        // Select window to focus
-        const int focus_change_dir = (int)IsNavInputPressed(ImGuiNavInput_FocusPrev, ImGuiInputReadMode_RepeatSlow) - (int)IsNavInputPressed(ImGuiNavInput_FocusNext, ImGuiInputReadMode_RepeatSlow);
-        if (focus_change_dir != 0)
-        {
-            NavUpdateWindowingHighlightWindow(focus_change_dir);
-            g.NavWindowingHighlightAlpha = 1.0f;
-        }
-
-        // Single press toggles NavLayer, long press with L/R apply actual focus on release (until then the window was merely rendered front-most)
-        if (!IsNavInputDown(ImGuiNavInput_Menu))
-        {
-            g.NavWindowingToggleLayer &= (g.NavWindowingHighlightAlpha < 1.0f); // Once button was held long enough we don't consider it a tap-to-toggle-layer press anymore.
-            if (g.NavWindowingToggleLayer && g.NavWindow)
-                apply_toggle_layer = true;
-            else if (!g.NavWindowingToggleLayer)
-                apply_focus_window = g.NavWindowingTarget;
-            g.NavWindowingTarget = NULL;
-        }
-    }
-
-    // Keyboard: Focus
-    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavKeyboard)
-    {
-        // Visuals only appears after a brief time after pressing TAB the first time, so that a fast CTRL+TAB doesn't add visual noise
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f)); // 1.0f
-        if (IsKeyPressedMap(ImGuiKey_Tab, true))
-            NavUpdateWindowingHighlightWindow(g.IO.KeyShift ? +1 : -1);
-        if (!g.IO.KeyCtrl)
-            apply_focus_window = g.NavWindowingTarget;
-    }
-
-    // Keyboard: Press and Release ALT to toggle menu layer
-    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
-    if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && IsNavInputPressed(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))
-        if (IsMousePosValid(&g.IO.MousePos) == IsMousePosValid(&g.IO.MousePosPrev))
-            apply_toggle_layer = true;
-
-    // Move window
-    if (g.NavWindowingTarget && !(g.NavWindowingTarget->Flags & ImGuiWindowFlags_NoMove))
-    {
-        ImVec2 move_delta;
-        if (g.NavInputSource == ImGuiInputSource_NavKeyboard && !g.IO.KeyShift)
-            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard, ImGuiInputReadMode_Down);
-        if (g.NavInputSource == ImGuiInputSource_NavGamepad)
-            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down);
-        if (move_delta.x != 0.0f || move_delta.y != 0.0f)
-        {
-            const float NAV_MOVE_SPEED = 800.0f;
-            const float move_speed = ImFloor(NAV_MOVE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); // FIXME: Doesn't code variable framerate very well
-            g.NavWindowingTarget->RootWindow->Pos += move_delta * move_speed;
-            g.NavDisableMouseHover = true;
-            MarkIniSettingsDirty(g.NavWindowingTarget);
-        }
-    }
-
-    // Apply final focus
-    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
-    {
-        g.NavDisableHighlight = false;
-        g.NavDisableMouseHover = true;
-        apply_focus_window = NavRestoreLastChildNavWindow(apply_focus_window);
-        ClosePopupsOverWindow(apply_focus_window);
-        FocusWindow(apply_focus_window);
-        if (apply_focus_window->NavLastIds[0] == 0)
-            NavInitWindow(apply_focus_window, false);
-
-        // If the window only has a menu layer, select it directly
-        if (apply_focus_window->DC.NavLayerActiveMask == (1 << 1))
-            g.NavLayer = 1;
-    }
-    if (apply_focus_window)
-        g.NavWindowingTarget = NULL;
-
-    // Apply menu/layer toggle
-    if (apply_toggle_layer && g.NavWindow)
-    {
-        // Move to parent menu if necessary
-        ImGuiWindow* new_nav_window = g.NavWindow;
-        while ((new_nav_window->DC.NavLayerActiveMask & (1 << 1)) == 0 && (new_nav_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (new_nav_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
-            new_nav_window = new_nav_window->ParentWindow;
-
-        if (new_nav_window != g.NavWindow)
-        {
-            ImGuiWindow* old_nav_window = g.NavWindow;
-            FocusWindow(new_nav_window);
-            new_nav_window->NavLastChildNavWindow = old_nav_window;
-        }
-        g.NavDisableHighlight = false;
-        g.NavDisableMouseHover = true;
-        NavRestoreLayer((g.NavWindow->DC.NavLayerActiveMask & (1 << 1)) ? (g.NavLayer ^ 1) : 0);
-    }
-}
-
-// Window has already passed the IsWindowNavFocusable()
-static const char* GetFallbackWindowNameForWindowingList(ImGuiWindow* window)
-{
-    if (window->Flags & ImGuiWindowFlags_Popup)
-        return "(Popup)";
-    if ((window->Flags & ImGuiWindowFlags_MenuBar) && strcmp(window->Name, "##MainMenuBar") == 0)
-        return "(Main menu bar)";
-    return "(Untitled)";
-}
-
-// Overlay displayed when using CTRL+TAB. Called by EndFrame().
-void ImGui::NavUpdateWindowingList()
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavWindowingTarget != NULL);
-
-    if (g.NavWindowingTimer < NAV_WINDOWING_LIST_APPEAR_DELAY)
-        return;
-
-    if (g.NavWindowingList == NULL)
-        g.NavWindowingList = FindWindowByName("###NavWindowingList");
-    SetNextWindowSizeConstraints(ImVec2(g.IO.DisplaySize.x * 0.20f, g.IO.DisplaySize.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
-    SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
-    PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
-    Begin("###NavWindowingList", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings);
-    for (int n = g.Windows.Size - 1; n >= 0; n--)
-    {
-        ImGuiWindow* window = g.Windows[n];
-        if (!IsWindowNavFocusable(window))
-            continue;
-        const char* label = window->Name;
-        if (label == FindRenderedTextEnd(label))
-            label = GetFallbackWindowNameForWindowingList(window);
-        Selectable(label, g.NavWindowingTarget == window);
-    }
-    End();
-    PopStyleVar();
-}
-
-// Scroll to keep newly navigated item fully into view
-// NB: We modify rect_rel by the amount we scrolled for, so it is immediately updated.
-static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item_rect)
-{
-    ImRect window_rect(window->InnerMainRect.Min - ImVec2(1, 1), window->InnerMainRect.Max + ImVec2(1, 1));
-    //g.OverlayDrawList.AddRect(window_rect.Min, window_rect.Max, IM_COL32_WHITE); // [DEBUG]
-    if (window_rect.Contains(item_rect))
-        return;
-
-    ImGuiContext& g = *GImGui;
-    if (window->ScrollbarX && item_rect.Min.x < window_rect.Min.x)
-    {
-        window->ScrollTarget.x = item_rect.Min.x - window->Pos.x + window->Scroll.x - g.Style.ItemSpacing.x;
-        window->ScrollTargetCenterRatio.x = 0.0f;
-    }
-    else if (window->ScrollbarX && item_rect.Max.x >= window_rect.Max.x)
-    {
-        window->ScrollTarget.x = item_rect.Max.x - window->Pos.x + window->Scroll.x + g.Style.ItemSpacing.x;
-        window->ScrollTargetCenterRatio.x = 1.0f;
-    }
-    if (item_rect.Min.y < window_rect.Min.y)
-    {
-        window->ScrollTarget.y = item_rect.Min.y - window->Pos.y + window->Scroll.y - g.Style.ItemSpacing.y;
-        window->ScrollTargetCenterRatio.y = 0.0f;
-    }
-    else if (item_rect.Max.y >= window_rect.Max.y)
-    {
-        window->ScrollTarget.y = item_rect.Max.y - window->Pos.y + window->Scroll.y + g.Style.ItemSpacing.y;
-        window->ScrollTargetCenterRatio.y = 1.0f;
-    }
-}
-
-static void ImGui::NavUpdate()
-{
-    ImGuiContext& g = *GImGui;
-    g.IO.WantSetMousePos = false;
-
-#if 0
-    if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
-#endif
-
-    bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
-    bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
-
-    // Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
-    if (nav_gamepad_active)
-        if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
-            g.NavInputSource = ImGuiInputSource_NavGamepad;
-
-    // Update Keyboard->Nav inputs mapping
-    if (nav_keyboard_active)
-    {
-        #define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
-        NAV_MAP_KEY(ImGuiKey_Space,     ImGuiNavInput_Activate );
-        NAV_MAP_KEY(ImGuiKey_Enter,     ImGuiNavInput_Input    );
-        NAV_MAP_KEY(ImGuiKey_Escape,    ImGuiNavInput_Cancel   );
-        NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
-        NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
-        NAV_MAP_KEY(ImGuiKey_UpArrow,   ImGuiNavInput_KeyUp_   );
-        NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
-        if (g.IO.KeyCtrl)   g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
-        if (g.IO.KeyShift)  g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
-        if (g.IO.KeyAlt)    g.IO.NavInputs[ImGuiNavInput_KeyMenu_]  = 1.0f;
-        #undef NAV_MAP_KEY
-    }
-
-    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
-    for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
-        g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
-
-    // Process navigation init request (select first/default focus)
-    if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
-    {
-        // Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
-        IM_ASSERT(g.NavWindow);
-        if (g.NavInitRequestFromMove)
-            SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
-        else
-            SetNavID(g.NavInitResultId, g.NavLayer);
-        g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
-    }
-    g.NavInitRequest = false;
-    g.NavInitRequestFromMove = false;
-    g.NavInitResultId = 0;
-    g.NavJustMovedToId = 0;
-
-    // Process navigation move request
-    if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
-    {
-        // Select which result to use
-        ImGuiNavMoveResult* result = (g.NavMoveResultLocal.ID != 0) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
-
-        // PageUp/PageDown behavior first jumps to the bottom/top mostly visible item, _otherwise_ use the result from the previous/next page.
-        if (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet)
-            if (g.NavMoveResultLocalVisibleSet.ID != 0 && g.NavMoveResultLocalVisibleSet.ID != g.NavId)
-                result = &g.NavMoveResultLocalVisibleSet;
-
-        // Maybe entering a flattened child from the outside? In this case solve the tie using the regular scoring rules.
-        if (result != &g.NavMoveResultOther && g.NavMoveResultOther.ID != 0 && g.NavMoveResultOther.Window->ParentWindow == g.NavWindow)
-            if ((g.NavMoveResultOther.DistBox < result->DistBox) || (g.NavMoveResultOther.DistBox == result->DistBox && g.NavMoveResultOther.DistCenter < result->DistCenter))
-                result = &g.NavMoveResultOther;
-        IM_ASSERT(g.NavWindow && result->Window);
-
-        // Scroll to keep newly navigated item fully into view.
-        if (g.NavLayer == 0)
-        {
-            ImRect rect_abs = ImRect(result->RectRel.Min + result->Window->Pos, result->RectRel.Max + result->Window->Pos);
-            NavScrollToBringItemIntoView(result->Window, rect_abs);
-
-            // Estimate upcoming scroll so we can offset our result position so mouse position can be applied immediately after in NavUpdate()
-            ImVec2 next_scroll = CalcNextScrollFromScrollTargetAndClamp(result->Window, false);
-            ImVec2 delta_scroll = result->Window->Scroll - next_scroll;
-            result->RectRel.Translate(delta_scroll);
-
-            // Also scroll parent window to keep us into view if necessary (we could/should technically recurse back the whole the parent hierarchy).
-            if (result->Window->Flags & ImGuiWindowFlags_ChildWindow)
-                NavScrollToBringItemIntoView(result->Window->ParentWindow, ImRect(rect_abs.Min + delta_scroll, rect_abs.Max + delta_scroll));
-        }
-
-        // Apply result from previous frame navigation directional move request
-        ClearActiveID();
-        g.NavWindow = result->Window;
-        SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
-        g.NavJustMovedToId = result->ID;
-        g.NavMoveFromClampedRefRect = false;
-    }
-
-    // When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
-    if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
-    {
-        IM_ASSERT(g.NavMoveRequest);
-        if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
-            g.NavDisableHighlight = false;
-        g.NavMoveRequestForward = ImGuiNavForward_None;
-    }
-
-    // Apply application mouse position movement, after we had a chance to process move request result.
-    if (g.NavMousePosDirty && g.NavIdIsAlive)
-    {
-        // Set mouse position given our knowledge of the navigated item position from last frame
-        if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
-        {
-            if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
-            {
-                g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
-                g.IO.WantSetMousePos = true;
-            }
-        }
-        g.NavMousePosDirty = false;
-    }
-    g.NavIdIsAlive = false;
-    g.NavJustTabbedId = 0;
-    IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
-
-    // Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
-    if (g.NavWindow)
-        NavSaveLastChildNavWindow(g.NavWindow);
-    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
-        g.NavWindow->NavLastChildNavWindow = NULL;
-
-    NavUpdateWindowing();
-
-    // Set output flags for user application
-    g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
-    g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
-
-    // Process NavCancel input (to close a popup, get back to parent, clear focus)
-    if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
-    {
-        if (g.ActiveId != 0)
-        {
-            ClearActiveID();
-        }
-        else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
-        {
-            // Exit child window
-            ImGuiWindow* child_window = g.NavWindow;
-            ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
-            IM_ASSERT(child_window->ChildId != 0);
-            FocusWindow(parent_window);
-            SetNavID(child_window->ChildId, 0);
-            g.NavIdIsAlive = false;
-            if (g.NavDisableMouseHover)
-                g.NavMousePosDirty = true;
-        }
-        else if (g.OpenPopupStack.Size > 0)
-        {
-            // Close open popup/menu
-            if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
-                ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-        }
-        else if (g.NavLayer != 0)
-        {
-            // Leave the "menu" layer
-            NavRestoreLayer(0);
-        }
-        else
-        {
-            // Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
-            if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
-                g.NavWindow->NavLastIds[0] = 0;
-            g.NavId = 0;
-        }
-    }
-
-    // Process manual activation request
-    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
-    if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-    {
-        bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
-        bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
-        if (g.ActiveId == 0 && activate_pressed)
-            g.NavActivateId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
-            g.NavActivateDownId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
-            g.NavActivatePressedId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
-            g.NavInputId = g.NavId;
-    }
-    if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-        g.NavDisableHighlight = true;
-    if (g.NavActivateId != 0)
-        IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
-    g.NavMoveRequest = false;
-
-    // Process programmatic activation request
-    if (g.NavNextActivateId != 0)
-        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
-    g.NavNextActivateId = 0;
-
-    // Initiate directional inputs request
-    const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
-    if (g.NavMoveRequestForward == ImGuiNavForward_None)
-    {
-        g.NavMoveDir = ImGuiDir_None;
-        g.NavMoveRequestFlags = 0;
-        if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-        {
-            if ((allowed_dir_flags & (1<<ImGuiDir_Left))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Up))    && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp,   ImGuiNavInput_KeyUp_,   ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Down))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
-        }
-        g.NavMoveClipDir = g.NavMoveDir;
-    }
-    else
-    {
-        // Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
-        // (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
-        IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
-        IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
-        g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
-    }
-
-    // PageUp/PageDown scroll
-    float nav_scoring_rect_offset_y = 0.0f;
-    if (nav_keyboard_active && g.NavMoveDir == ImGuiDir_None && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget && g.NavLayer == 0)
-    {
-        ImGuiWindow* window = g.NavWindow;
-        bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && (allowed_dir_flags & (1 << ImGuiDir_Up));
-        bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && (allowed_dir_flags & (1 << ImGuiDir_Down));
-        if ((page_up_held && !page_down_held) || (page_down_held && !page_up_held))
-        {
-            if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
-            {
-                // Fallback manual-scroll when window has no navigable item
-                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
-                    SetWindowScrollY(window, window->Scroll.y - window->InnerClipRect.GetHeight());
-                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
-                    SetWindowScrollY(window, window->Scroll.y + window->InnerClipRect.GetHeight());
-            }
-            else
-            {
-                const ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
-                const float page_offset_y = ImMax(0.0f, window->InnerClipRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
-                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
-                {
-                    nav_scoring_rect_offset_y = -page_offset_y;
-                    g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
-                    g.NavMoveClipDir = ImGuiDir_Up;
-                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
-                }
-                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
-                {
-                    nav_scoring_rect_offset_y = +page_offset_y;
-                    g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
-                    g.NavMoveClipDir = ImGuiDir_Down;
-                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
-                }
-            }
-        }
-    }
-
-    if (g.NavMoveDir != ImGuiDir_None)
-    {
-        g.NavMoveRequest = true;
-        g.NavMoveDirLast = g.NavMoveDir;
-    }
-
-    // If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
-    if (g.NavMoveRequest && g.NavId == 0)
-    {
-        g.NavInitRequest = g.NavInitRequestFromMove = true;
-        g.NavInitResultId = 0;
-        g.NavDisableHighlight = false;
-    }
-
-    NavUpdateAnyRequestFlag();
-
-    // Scrolling
-    if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
-    {
-        // *Fallback* manual-scroll with Nav directional keys when window has no navigable item
-        ImGuiWindow* window = g.NavWindow;
-        const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
-        if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
-        {
-            if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
-                SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
-            if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
-                SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
-        }
-
-        // *Normal* Manual scroll with NavScrollXXX keys
-        // Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
-        ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
-        if (scroll_dir.x != 0.0f && window->ScrollbarX)
-        {
-            SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
-            g.NavMoveFromClampedRefRect = true;
-        }
-        if (scroll_dir.y != 0.0f)
-        {
-            SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
-            g.NavMoveFromClampedRefRect = true;
-        }
-    }
-
-    // Reset search results
-    g.NavMoveResultLocal.Clear();
-    g.NavMoveResultLocalVisibleSet.Clear();
-    g.NavMoveResultOther.Clear();
-
-    // When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
-    if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
-    {
-        ImGuiWindow* window = g.NavWindow;
-        ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
-        if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
-        {
-            float pad = window->CalcFontSize() * 0.5f;
-            window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
-            window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
-            g.NavId = 0;
-        }
-        g.NavMoveFromClampedRefRect = false;
-    }
-
-    // For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
-    ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
-    g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
-    g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
-    g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
-    g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
-    IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
-    //g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
-    g.NavScoringCount = 0;
-#if IMGUI_DEBUG_NAV_RECTS
-    if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
-    if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
-#endif
-}
-
 void ImGui::StartMouseMovingWindow(ImGuiWindow* window)
 {
     // Set ActiveId even if the _NoMove flag is set. Without it, dragging away from a window with _NoMove would activate hover on other windows.
@@ -4010,65 +3013,6 @@
     Begin("Debug##Default");
 }
 
-static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
-{
-    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHash(name, 0));
-    if (!settings)
-        settings = CreateNewWindowSettings(name);
-    return (void*)settings;
-}
-
-static void SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
-{
-    ImGuiWindowSettings* settings = (ImGuiWindowSettings*)entry;
-    float x, y;
-    int i;
-    if (sscanf(line, "Pos=%f,%f", &x, &y) == 2)         settings->Pos = ImVec2(x, y);
-    else if (sscanf(line, "Size=%f,%f", &x, &y) == 2)   settings->Size = ImMax(ImVec2(x, y), GImGui->Style.WindowMinSize);
-    else if (sscanf(line, "Collapsed=%d", &i) == 1)     settings->Collapsed = (i != 0);
-}
-
-static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
-{
-    // Gather data from windows that were active during this session
-    ImGuiContext& g = *imgui_ctx;
-    for (int i = 0; i != g.Windows.Size; i++)
-    {
-        ImGuiWindow* window = g.Windows[i];
-        if (window->Flags & ImGuiWindowFlags_NoSavedSettings)
-            continue;
-
-        ImGuiWindowSettings* settings = (window->SettingsIdx != -1) ? &g.SettingsWindows[window->SettingsIdx] : ImGui::FindWindowSettings(window->ID);
-        if (!settings)
-        {
-            settings = CreateNewWindowSettings(window->Name);
-            window->SettingsIdx = g.SettingsWindows.index_from_pointer(settings);
-        }
-        IM_ASSERT(settings->ID == window->ID);
-        settings->Pos = window->Pos;
-        settings->Size = window->SizeFull;
-        settings->Collapsed = window->Collapsed;
-    }
-
-    // Write a buffer
-    // If a window wasn't opened in this session we preserve its settings
-    buf->reserve(buf->size() + g.SettingsWindows.Size * 96); // ballpark reserve
-    for (int i = 0; i != g.SettingsWindows.Size; i++)
-    {
-        const ImGuiWindowSettings* settings = &g.SettingsWindows[i];
-        if (settings->Pos.x == FLT_MAX)
-            continue;
-        const char* name = settings->Name;
-        if (const char* p = strstr(name, "###"))  // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID()
-            name = p;
-        buf->appendf("[%s][%s]\n", handler->TypeName, name);
-        buf->appendf("Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
-        buf->appendf("Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
-        buf->appendf("Collapsed=%d\n", settings->Collapsed);
-        buf->appendf("\n");
-    }
-}
-
 void ImGui::Initialize(ImGuiContext* context)
 {
     ImGuiContext& g = *context;
@@ -4143,154 +3087,6 @@
     g.Initialized = false;
 }
 
-ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = 0; i != g.SettingsWindows.Size; i++)
-        if (g.SettingsWindows[i].ID == id)
-            return &g.SettingsWindows[i];
-    return NULL;
-}
-
-static ImGuiWindowSettings* CreateNewWindowSettings(const char* name)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsWindows.push_back(ImGuiWindowSettings());
-    ImGuiWindowSettings* settings = &g.SettingsWindows.back();
-    settings->Name = ImStrdup(name);
-    settings->ID = ImHash(name, 0);
-    return settings;
-}
-
-void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
-{
-    size_t file_data_size = 0;
-    char* file_data = (char*)ImFileLoadToMemory(ini_filename, "rb", &file_data_size);
-    if (!file_data)
-        return;
-    LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
-    ImGui::MemFree(file_data);
-}
-
-ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
-{
-    ImGuiContext& g = *GImGui;
-    const ImGuiID type_hash = ImHash(type_name, 0, 0);
-    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
-        if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
-            return &g.SettingsHandlers[handler_n];
-    return NULL;
-}
-
-// Zero-tolerance, no error reporting, cheap .ini parsing
-void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.Initialized);
-    IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
-
-    // For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
-    // For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
-    if (ini_size == 0)
-        ini_size = strlen(ini_data);
-    char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
-    char* buf_end = buf + ini_size;
-    memcpy(buf, ini_data, ini_size);
-    buf[ini_size] = 0;
-
-    void* entry_data = NULL;
-    ImGuiSettingsHandler* entry_handler = NULL;
-
-    char* line_end = NULL;
-    for (char* line = buf; line < buf_end; line = line_end + 1)
-    {
-        // Skip new lines markers, then find end of the line
-        while (*line == '\n' || *line == '\r')
-            line++;
-        line_end = line;
-        while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
-            line_end++;
-        line_end[0] = 0;
-
-        if (line[0] == '[' && line_end > line && line_end[-1] == ']')
-        {
-            // Parse "[Type][Name]". Note that 'Name' can itself contains [] characters, which is acceptable with the current format and parsing code.
-            line_end[-1] = 0;
-            const char* name_end = line_end - 1;
-            const char* type_start = line + 1;
-            char* type_end = (char*)(intptr_t)ImStrchrRange(type_start, name_end, ']');
-            const char* name_start = type_end ? ImStrchrRange(type_end + 1, name_end, '[') : NULL;
-            if (!type_end || !name_start)
-            {
-                name_start = type_start; // Import legacy entries that have no type
-                type_start = "Window";
-            }
-            else
-            {
-                *type_end = 0; // Overwrite first ']'
-                name_start++;  // Skip second '['
-            }
-            entry_handler = FindSettingsHandler(type_start);
-            entry_data = entry_handler ? entry_handler->ReadOpenFn(&g, entry_handler, name_start) : NULL;
-        }
-        else if (entry_handler != NULL && entry_data != NULL)
-        {
-            // Let type handler parse the line
-            entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
-        }
-    }
-    ImGui::MemFree(buf);
-    g.SettingsLoaded = true;
-}
-
-void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsDirtyTimer = 0.0f;
-    if (!ini_filename)
-        return;
-
-    size_t ini_data_size = 0;
-    const char* ini_data = SaveIniSettingsToMemory(&ini_data_size);
-    FILE* f = ImFileOpen(ini_filename, "wt");
-    if (!f)
-        return;
-    fwrite(ini_data, sizeof(char), ini_data_size, f);
-    fclose(f);
-}
-
-// Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer
-const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsDirtyTimer = 0.0f;
-    g.SettingsIniData.Buf.resize(0);
-    g.SettingsIniData.Buf.push_back(0);
-    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
-    {
-        ImGuiSettingsHandler* handler = &g.SettingsHandlers[handler_n];
-        handler->WriteAllFn(&g, handler, &g.SettingsIniData);
-    }
-    if (out_size)
-        *out_size = (size_t)g.SettingsIniData.size();
-    return g.SettingsIniData.c_str();
-}
-
-void ImGui::MarkIniSettingsDirty()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.SettingsDirtyTimer <= 0.0f)
-        g.SettingsDirtyTimer = g.IO.IniSavingRate;
-}
-
-void ImGui::MarkIniSettingsDirty(ImGuiWindow* window)
-{
-    ImGuiContext& g = *GImGui;
-    if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings))
-        if (g.SettingsDirtyTimer <= 0.0f)
-            g.SettingsDirtyTimer = g.IO.IniSavingRate;
-}
-
 // FIXME: Add a more explicit sort order in the window structure.
 static int IMGUI_CDECL ChildWindowComparer(const void* lhs, const void* rhs)
 {
@@ -4588,74 +3384,6 @@
     return text_display_end;
 }
 
-// Pass text data straight to log (without being displayed)
-void ImGui::LogText(const char* fmt, ...)
-{
-    ImGuiContext& g = *GImGui;
-    if (!g.LogEnabled)
-        return;
-
-    va_list args;
-    va_start(args, fmt);
-    if (g.LogFile)
-        vfprintf(g.LogFile, fmt, args);
-    else
-        g.LogClipboard.appendfv(fmt, args);
-    va_end(args);
-}
-
-// Internal version that takes a position to decide on newline placement and pad items according to their depth.
-// We split text into individual lines to add current tree level padding
-void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    if (!text_end)
-        text_end = ImGui::FindRenderedTextEnd(text, text_end);
-
-    const bool log_new_line = ref_pos && (ref_pos->y > window->DC.LogLinePosY + 1);
-    if (ref_pos)
-        window->DC.LogLinePosY = ref_pos->y;
-
-    const char* text_remaining = text;
-    if (g.LogStartDepth > window->DC.TreeDepth)  // Re-adjust padding if we have popped out of our starting depth
-        g.LogStartDepth = window->DC.TreeDepth;
-    const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth);
-    for (;;)
-    {
-        // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry.
-        const char* line_end = text_remaining;
-        while (line_end < text_end)
-            if (*line_end == '\n')
-                break;
-            else
-                line_end++;
-        if (line_end >= text_end)
-            line_end = NULL;
-
-        const bool is_first_line = (text == text_remaining);
-        bool is_last_line = false;
-        if (line_end == NULL)
-        {
-            is_last_line = true;
-            line_end = text_end;
-        }
-        if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
-        {
-            const int char_count = (int)(line_end - text_remaining);
-            if (log_new_line || !is_first_line)
-                ImGui::LogText(IM_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining);
-            else
-                ImGui::LogText(" %.*s", char_count, text_remaining);
-        }
-
-        if (is_last_line)
-            break;
-        text_remaining = line_end + 1;
-    }
-}
-
 // Internal ImGui functions to render text
 // RenderText***() functions calls ImDrawList::AddText() calls ImBitmapFont::RenderText()
 void ImGui::RenderText(ImVec2 pos, const char* text, const char* text_end, bool hide_text_after_hash)
@@ -5257,376 +3985,6 @@
     return ImRect(0.0f, 0.0f, g.IO.DisplaySize.x, g.IO.DisplaySize.y);
 }
 
-// Not exposed publicly as BeginTooltip() because bool parameters are evil. Let's see if other needs arise first.
-void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, bool override_previous_tooltip)
-{
-    ImGuiContext& g = *GImGui;
-    char window_name[16];
-    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
-    if (override_previous_tooltip)
-        if (ImGuiWindow* window = FindWindowByName(window_name))
-            if (window->Active)
-            {
-                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
-                window->Hidden = true;
-                window->HiddenFramesRegular = 1;
-                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
-            }
-    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoInputs|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoNav;
-    Begin(window_name, NULL, flags | extra_flags);
-}
-
-void ImGui::SetTooltipV(const char* fmt, va_list args)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.DragDropWithinSourceOrTarget)
-        BeginTooltip();
-    else
-        BeginTooltipEx(0, true);
-    TextV(fmt, args);
-    EndTooltip();
-}
-
-void ImGui::SetTooltip(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    SetTooltipV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::BeginTooltip()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.DragDropWithinSourceOrTarget)
-    {
-        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
-        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
-        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
-        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
-        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
-        SetNextWindowPos(tooltip_pos);
-        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
-        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
-        BeginTooltipEx(0, true);
-    }
-    else
-    {
-        BeginTooltipEx(0, false);
-    }
-}
-
-void ImGui::EndTooltip()
-{
-    IM_ASSERT(GetCurrentWindowRead()->Flags & ImGuiWindowFlags_Tooltip);   // Mismatched BeginTooltip()/EndTooltip() calls
-    End();
-}
-
-// Mark popup as open (toggle toward open state).
-// Popups are closed when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
-// Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
-// One open popup per level of the popup hierarchy (NB: when assigning we reset the Window member of ImGuiPopupRef to NULL)
-void ImGui::OpenPopupEx(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* parent_window = g.CurrentWindow;
-    int current_stack_size = g.CurrentPopupStack.Size;
-    ImGuiPopupRef popup_ref; // Tagged as new ref as Window will be set back to NULL if we write this into OpenPopupStack.
-    popup_ref.PopupId = id;
-    popup_ref.Window = NULL;
-    popup_ref.ParentWindow = parent_window;
-    popup_ref.OpenFrameCount = g.FrameCount;
-    popup_ref.OpenParentId = parent_window->IDStack.back();
-    popup_ref.OpenMousePos = g.IO.MousePos;
-    popup_ref.OpenPopupPos = NavCalcPreferredRefPos();
-
-    //printf("[%05d] OpenPopupEx(0x%08X)\n", g.FrameCount, id);
-    if (g.OpenPopupStack.Size < current_stack_size + 1)
-    {
-        g.OpenPopupStack.push_back(popup_ref);
-    }
-    else
-    {
-        // Gently handle the user mistakenly calling OpenPopup() every frame. It is a programming mistake! However, if we were to run the regular code path, the ui
-        // would become completely unusable because the popup will always be in hidden-while-calculating-size state _while_ claiming focus. Which would be a very confusing
-        // situation for the programmer. Instead, we silently allow the popup to proceed, it will keep reappearing and the programming error will be more obvious to understand.
-        if (g.OpenPopupStack[current_stack_size].PopupId == id && g.OpenPopupStack[current_stack_size].OpenFrameCount == g.FrameCount - 1)
-        {
-            g.OpenPopupStack[current_stack_size].OpenFrameCount = popup_ref.OpenFrameCount;
-        }
-        else
-        {
-            // Close child popups if any, then flag popup for open/reopen
-            g.OpenPopupStack.resize(current_stack_size + 1);
-            g.OpenPopupStack[current_stack_size] = popup_ref;
-        }
-
-        // When reopening a popup we first refocus its parent, otherwise if its parent is itself a popup it would get closed by ClosePopupsOverWindow().
-        // This is equivalent to what ClosePopupToLevel() does.
-        //if (g.OpenPopupStack[current_stack_size].PopupId == id)
-        //    FocusWindow(parent_window);
-    }
-}
-
-void ImGui::OpenPopup(const char* str_id)
-{
-    ImGuiContext& g = *GImGui;
-    OpenPopupEx(g.CurrentWindow->GetID(str_id));
-}
-
-void ImGui::ClosePopupsOverWindow(ImGuiWindow* ref_window)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.OpenPopupStack.empty())
-        return;
-
-    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
-    // Don't close our own child popup windows.
-    int n = 0;
-    if (ref_window)
-    {
-        for (n = 0; n < g.OpenPopupStack.Size; n++)
-        {
-            ImGuiPopupRef& popup = g.OpenPopupStack[n];
-            if (!popup.Window)
-                continue;
-            IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
-            if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
-                continue;
-
-            // Trim the stack if popups are not direct descendant of the reference window (which is often the NavWindow)
-            bool has_focus = false;
-            for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
-                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
-            if (!has_focus)
-                break;
-        }
-    }
-    if (n < g.OpenPopupStack.Size) // This test is not required but it allows to set a convenient breakpoint on the block below
-        ClosePopupToLevel(n);
-}
-
-ImGuiWindow* ImGui::GetFrontMostPopupModal()
-{
-    ImGuiContext& g = *GImGui;
-    for (int n = g.OpenPopupStack.Size-1; n >= 0; n--)
-        if (ImGuiWindow* popup = g.OpenPopupStack.Data[n].Window)
-            if (popup->Flags & ImGuiWindowFlags_Modal)
-                return popup;
-    return NULL;
-}
-
-void ImGui::ClosePopupToLevel(int remaining)
-{
-    IM_ASSERT(remaining >= 0);
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* focus_window = (remaining > 0) ? g.OpenPopupStack[remaining-1].Window : g.OpenPopupStack[0].ParentWindow;
-    if (g.NavLayer == 0)
-        focus_window = NavRestoreLastChildNavWindow(focus_window);
-    FocusWindow(focus_window);
-    focus_window->DC.NavHideHighlightOneFrame = true;
-    g.OpenPopupStack.resize(remaining);
-}
-
-void ImGui::ClosePopup(ImGuiID id)
-{
-    if (!IsPopupOpen(id))
-        return;
-    ImGuiContext& g = *GImGui;
-    ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-}
-
-// Close the popup we have begin-ed into.
-void ImGui::CloseCurrentPopup()
-{
-    ImGuiContext& g = *GImGui;
-    int popup_idx = g.CurrentPopupStack.Size - 1;
-    if (popup_idx < 0 || popup_idx >= g.OpenPopupStack.Size || g.CurrentPopupStack[popup_idx].PopupId != g.OpenPopupStack[popup_idx].PopupId)
-        return;
-    while (popup_idx > 0 && g.OpenPopupStack[popup_idx].Window && (g.OpenPopupStack[popup_idx].Window->Flags & ImGuiWindowFlags_ChildMenu))
-        popup_idx--;
-    ClosePopupToLevel(popup_idx);
-}
-
-bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (!IsPopupOpen(id))
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-
-    char name[20];
-    if (extra_flags & ImGuiWindowFlags_ChildMenu)
-        ImFormatString(name, IM_ARRAYSIZE(name), "##Menu_%02d", g.CurrentPopupStack.Size);    // Recycle windows based on depth
-    else
-        ImFormatString(name, IM_ARRAYSIZE(name), "##Popup_%08x", id); // Not recycling, so we can close/open during the same frame
-
-    bool is_open = Begin(name, NULL, extra_flags | ImGuiWindowFlags_Popup);
-    if (!is_open) // NB: Begin can return false when the popup is completely clipped (e.g. zero size display)
-        EndPopup();
-
-    return is_open;
-}
-
-bool ImGui::BeginPopup(const char* str_id, ImGuiWindowFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.OpenPopupStack.Size <= g.CurrentPopupStack.Size) // Early out for performance
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-    return BeginPopupEx(g.CurrentWindow->GetID(str_id), flags|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::IsPopupOpen(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == id;
-}
-
-bool ImGui::IsPopupOpen(const char* str_id)
-{
-    ImGuiContext& g = *GImGui;
-    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == g.CurrentWindow->GetID(str_id);
-}
-
-bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    const ImGuiID id = window->GetID(name);
-    if (!IsPopupOpen(id))
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-
-    // Center modal windows by default
-    // FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
-    if (g.NextWindowData.PosCond == 0)
-        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
-
-    bool is_open = Begin(name, p_open, flags | ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
-    if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-    {
-        EndPopup();
-        if (is_open)
-            ClosePopup(id);
-        return false;
-    }
-
-    return is_open;
-}
-
-void ImGui::NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, const ImRect& bb_rel, ImGuiNavMoveFlags move_flags)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_None);
-    ImGui::NavMoveRequestCancel();
-    g.NavMoveDir = move_dir;
-    g.NavMoveClipDir = clip_dir;
-    g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
-    g.NavMoveRequestFlags = move_flags;
-    g.NavWindow->NavRectRel[g.NavLayer] = bb_rel;
-}
-
-void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.NavWindow != window || !NavMoveRequestButNoResultYet() || g.NavMoveRequestForward != ImGuiNavForward_None || g.NavLayer != 0)
-        return;
-    IM_ASSERT(move_flags != 0); // No points calling this with no wrapping
-    ImRect bb_rel = window->NavRectRel[0];
-
-    ImGuiDir clip_dir = g.NavMoveDir;
-    if (g.NavMoveDir == ImGuiDir_Left && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
-    {
-        bb_rel.Min.x = bb_rel.Max.x = ImMax(window->SizeFull.x, window->SizeContents.x) - window->Scroll.x;
-        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(-bb_rel.GetHeight()); clip_dir = ImGuiDir_Up; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Right && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
-    {
-        bb_rel.Min.x = bb_rel.Max.x = -window->Scroll.x;
-        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(+bb_rel.GetHeight()); clip_dir = ImGuiDir_Down; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Up && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
-    {
-        bb_rel.Min.y = bb_rel.Max.y = ImMax(window->SizeFull.y, window->SizeContents.y) - window->Scroll.y;
-        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(-bb_rel.GetWidth()); clip_dir = ImGuiDir_Left; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Down && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
-    {
-        bb_rel.Min.y = bb_rel.Max.y = -window->Scroll.y;
-        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(+bb_rel.GetWidth()); clip_dir = ImGuiDir_Right; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-}
-
-void ImGui::EndPopup()
-{
-    ImGuiContext& g = *GImGui; (void)g;
-    IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup);  // Mismatched BeginPopup()/EndPopup() calls
-    IM_ASSERT(g.CurrentPopupStack.Size > 0);
-
-    // Make all menus and popups wrap around for now, may need to expose that policy.
-    NavMoveRequestTryWrapping(g.CurrentWindow, ImGuiNavMoveFlags_LoopY);
-
-    End();
-}
-
-bool ImGui::OpenPopupOnItemClick(const char* str_id, int mouse_button)
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-    {
-        ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
-        IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
-        OpenPopupEx(id);
-        return true;
-    }
-    return false;
-}
-
-// This is a helper to handle the simplest case of associating one named popup to one given widget.
-// You may want to handle this on user side if you have specific needs (e.g. tweaking IsItemHovered() parameters).
-// You can pass a NULL str_id to use the identifier of the last item.
-bool ImGui::BeginPopupContextItem(const char* str_id, int mouse_button)
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
-    IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
-    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-        OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::BeginPopupContextWindow(const char* str_id, int mouse_button, bool also_over_items)
-{
-    if (!str_id)
-        str_id = "window_context";
-    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
-    if (IsMouseReleased(mouse_button) && IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-        if (also_over_items || !IsAnyItemHovered())
-            OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::BeginPopupContextVoid(const char* str_id, int mouse_button)
-{
-    if (!str_id)
-        str_id = "void_context";
-    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
-    if (IsMouseReleased(mouse_button) && !IsWindowHovered(ImGuiHoveredFlags_AnyWindow))
-        OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
 static bool ImGui::BeginChildEx(const char* name, ImGuiID id, const ImVec2& size_arg, bool border, ImGuiWindowFlags flags)
 {
     ImGuiContext& g = *GImGui;
@@ -5670,7 +4028,6 @@
         SetActiveID(id+1, child_window); // Steal ActiveId with a dummy id so that key-press won't activate child item
         g.ActiveIdSource = ImGuiInputSource_Nav;
     }
-
     return ret;
 }
 
@@ -5761,112 +4118,6 @@
     IM_ASSERT(p_backup == window->DC.StackSizesBackup + IM_ARRAYSIZE(window->DC.StackSizesBackup));
 }
 
-ImRect ImGui::GetWindowAllowedExtentRect(ImGuiWindow*)
-{
-    ImVec2 padding = GImGui->Style.DisplaySafeAreaPadding;
-    ImRect r_screen = GetViewportRect();
-    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
-    return r_screen;
-}
-
-// r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
-// r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
-ImVec2 ImGui::FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy)
-{
-    ImVec2 base_pos_clamped = ImClamp(ref_pos, r_outer.Min, r_outer.Max - size);
-    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
-    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
-
-    // Combo Box policy (we want a connecting edge)
-    if (policy == ImGuiPopupPositionPolicy_ComboBox)
-    {
-        const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Down, ImGuiDir_Right, ImGuiDir_Left, ImGuiDir_Up };
-        for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
-        {
-            const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
-            if (n != -1 && dir == *last_dir) // Already tried this direction?
-                continue;
-            ImVec2 pos;
-            if (dir == ImGuiDir_Down)  pos = ImVec2(r_avoid.Min.x, r_avoid.Max.y);          // Below, Toward Right (default)
-            if (dir == ImGuiDir_Right) pos = ImVec2(r_avoid.Min.x, r_avoid.Min.y - size.y); // Above, Toward Right
-            if (dir == ImGuiDir_Left)  pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Max.y); // Below, Toward Left
-            if (dir == ImGuiDir_Up)    pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Min.y - size.y); // Above, Toward Left
-            if (!r_outer.Contains(ImRect(pos, pos + size)))
-                continue;
-            *last_dir = dir;
-            return pos;
-        }
-    }
-
-    // Default popup policy
-    const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
-    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
-    {
-        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
-        if (n != -1 && dir == *last_dir) // Already tried this direction?
-            continue;
-        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
-        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
-        if (avail_w < size.x || avail_h < size.y)
-            continue;
-        ImVec2 pos;
-        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
-        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
-        *last_dir = dir;
-        return pos;
-    }
-
-    // Fallback, try to keep within display
-    *last_dir = ImGuiDir_None;
-    ImVec2 pos = ref_pos;
-    pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
-    pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
-    return pos;
-}
-
-ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
-{
-    ImGuiContext& g = *GImGui;
-
-    ImRect r_outer = GetWindowAllowedExtentRect(window);
-    if (window->Flags & ImGuiWindowFlags_ChildMenu)
-    {
-        // Child menus typically request _any_ position within the parent menu item, and then our FindBestWindowPosForPopup() function will move the new menu outside the parent bounds.
-        // This is how we end up with child menus appearing (most-commonly) on the right of the parent menu.
-        IM_ASSERT(g.CurrentWindow == window);
-        ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.Size - 2];
-        float horizontal_overlap = g.Style.ItemSpacing.x;       // We want some overlap to convey the relative depth of each menu (currently the amount of overlap is hard-coded to style.ItemSpacing.x).
-        ImRect r_avoid;
-        if (parent_window->DC.MenuBarAppending)
-            r_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
-        else
-            r_avoid = ImRect(parent_window->Pos.x + horizontal_overlap, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - horizontal_overlap - parent_window->ScrollbarSizes.x, FLT_MAX);
-        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-    }
-    if (window->Flags & ImGuiWindowFlags_Popup)
-    {
-        ImRect r_avoid = ImRect(window->Pos.x - 1, window->Pos.y - 1, window->Pos.x + 1, window->Pos.y + 1);
-        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-    }
-    if (window->Flags & ImGuiWindowFlags_Tooltip)
-    {
-        // Position tooltip (always follows mouse)
-        float sc = g.Style.MouseCursorScale;
-        ImVec2 ref_pos = NavCalcPreferredRefPos();
-        ImRect r_avoid;
-        if (!g.NavDisableHighlight && g.NavDisableMouseHover && !(g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos))
-            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 16, ref_pos.y + 8);
-        else
-            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24 * sc, ref_pos.y + 24 * sc); // FIXME: Hard-coded based on mouse cursor shape expectation. Exact dimension not very important.
-        ImVec2 pos = FindBestWindowPosForPopupEx(ref_pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-        if (window->AutoPosLastDirection == ImGuiDir_None)
-            pos = ref_pos + ImVec2(2, 2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
-        return pos;
-    }
-    IM_ASSERT(0);
-    return window->Pos;
-}
-
 static void SetWindowConditionAllowFlags(ImGuiWindow* window, ImGuiCond flags, bool enabled)
 {
     window->SetWindowPosAllowFlags       = enabled ? (window->SetWindowPosAllowFlags       | flags) : (window->SetWindowPosAllowFlags       & ~flags);
@@ -6843,116 +5094,6 @@
     SetCurrentWindow(g.CurrentWindowStack.empty() ? NULL : g.CurrentWindowStack.back());
 }
 
-// Vertical scrollbar
-// The entire piece of code below is rather confusing because:
-// - We handle absolute seeking (when first clicking outside the grab) and relative manipulation (afterward or when clicking inside the grab)
-// - We store values as normalized ratio and in a form that allows the window content to change while we are holding on a scrollbar
-// - We handle both horizontal and vertical scrollbars, which makes the terminology not ideal.
-void ImGui::Scrollbar(ImGuiLayoutType direction)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    const bool horizontal = (direction == ImGuiLayoutType_Horizontal);
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(horizontal ? "#SCROLLX" : "#SCROLLY");
-
-    // Render background
-    bool other_scrollbar = (horizontal ? window->ScrollbarY : window->ScrollbarX);
-    float other_scrollbar_size_w = other_scrollbar ? style.ScrollbarSize : 0.0f;
-    const ImRect window_rect = window->Rect();
-    const float border_size = window->WindowBorderSize;
-    ImRect bb = horizontal
-        ? ImRect(window->Pos.x + border_size, window_rect.Max.y - style.ScrollbarSize, window_rect.Max.x - other_scrollbar_size_w - border_size, window_rect.Max.y - border_size)
-        : ImRect(window_rect.Max.x - style.ScrollbarSize, window->Pos.y + border_size, window_rect.Max.x - border_size, window_rect.Max.y - other_scrollbar_size_w - border_size);
-    if (!horizontal)
-        bb.Min.y += window->TitleBarHeight() + ((window->Flags & ImGuiWindowFlags_MenuBar) ? window->MenuBarHeight() : 0.0f);
-    if (bb.GetWidth() <= 0.0f || bb.GetHeight() <= 0.0f)
-        return;
-
-    int window_rounding_corners;
-    if (horizontal)
-        window_rounding_corners = ImDrawCornerFlags_BotLeft | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
-    else
-        window_rounding_corners = (((window->Flags & ImGuiWindowFlags_NoTitleBar) && !(window->Flags & ImGuiWindowFlags_MenuBar)) ? ImDrawCornerFlags_TopRight : 0) | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
-    window->DrawList->AddRectFilled(bb.Min, bb.Max, GetColorU32(ImGuiCol_ScrollbarBg), window->WindowRounding, window_rounding_corners);
-    bb.Expand(ImVec2(-ImClamp((float)(int)((bb.Max.x - bb.Min.x - 2.0f) * 0.5f), 0.0f, 3.0f), -ImClamp((float)(int)((bb.Max.y - bb.Min.y - 2.0f) * 0.5f), 0.0f, 3.0f)));
-
-    // V denote the main, longer axis of the scrollbar (= height for a vertical scrollbar)
-    float scrollbar_size_v = horizontal ? bb.GetWidth() : bb.GetHeight();
-    float scroll_v = horizontal ? window->Scroll.x : window->Scroll.y;
-    float win_size_avail_v = (horizontal ? window->SizeFull.x : window->SizeFull.y) - other_scrollbar_size_w;
-    float win_size_contents_v = horizontal ? window->SizeContents.x : window->SizeContents.y;
-
-    // Calculate the height of our grabbable box. It generally represent the amount visible (vs the total scrollable amount)
-    // But we maintain a minimum size in pixel to allow for the user to still aim inside.
-    IM_ASSERT(ImMax(win_size_contents_v, win_size_avail_v) > 0.0f); // Adding this assert to check if the ImMax(XXX,1.0f) is still needed. PLEASE CONTACT ME if this triggers.
-    const float win_size_v = ImMax(ImMax(win_size_contents_v, win_size_avail_v), 1.0f);
-    const float grab_h_pixels = ImClamp(scrollbar_size_v * (win_size_avail_v / win_size_v), style.GrabMinSize, scrollbar_size_v);
-    const float grab_h_norm = grab_h_pixels / scrollbar_size_v;
-
-    // Handle input right away. None of the code of Begin() is relying on scrolling position before calling Scrollbar().
-    bool held = false;
-    bool hovered = false;
-    const bool previously_held = (g.ActiveId == id);
-    ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_NoNavFocus);
-
-    float scroll_max = ImMax(1.0f, win_size_contents_v - win_size_avail_v);
-    float scroll_ratio = ImSaturate(scroll_v / scroll_max);
-    float grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
-    if (held && grab_h_norm < 1.0f)
-    {
-        float scrollbar_pos_v = horizontal ? bb.Min.x : bb.Min.y;
-        float mouse_pos_v = horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
-        float* click_delta_to_grab_center_v = horizontal ? &g.ScrollbarClickDeltaToGrabCenter.x : &g.ScrollbarClickDeltaToGrabCenter.y;
-
-        // Click position in scrollbar normalized space (0.0f->1.0f)
-        const float clicked_v_norm = ImSaturate((mouse_pos_v - scrollbar_pos_v) / scrollbar_size_v);
-        SetHoveredID(id);
-
-        bool seek_absolute = false;
-        if (!previously_held)
-        {
-            // On initial click calculate the distance between mouse and the center of the grab
-            if (clicked_v_norm >= grab_v_norm && clicked_v_norm <= grab_v_norm + grab_h_norm)
-            {
-                *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
-            }
-            else
-            {
-                seek_absolute = true;
-                *click_delta_to_grab_center_v = 0.0f;
-            }
-        }
-
-        // Apply scroll
-        // It is ok to modify Scroll here because we are being called in Begin() after the calculation of SizeContents and before setting up our starting position
-        const float scroll_v_norm = ImSaturate((clicked_v_norm - *click_delta_to_grab_center_v - grab_h_norm*0.5f) / (1.0f - grab_h_norm));
-        scroll_v = (float)(int)(0.5f + scroll_v_norm * scroll_max);//(win_size_contents_v - win_size_v));
-        if (horizontal)
-            window->Scroll.x = scroll_v;
-        else
-            window->Scroll.y = scroll_v;
-
-        // Update values for rendering
-        scroll_ratio = ImSaturate(scroll_v / scroll_max);
-        grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
-
-        // Update distance to grab now that we have seeked and saturated
-        if (seek_absolute)
-            *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
-    }
-
-    // Render
-    const ImU32 grab_col = GetColorU32(held ? ImGuiCol_ScrollbarGrabActive : hovered ? ImGuiCol_ScrollbarGrabHovered : ImGuiCol_ScrollbarGrab);
-    ImRect grab_rect;
-    if (horizontal)
-        grab_rect = ImRect(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm), bb.Min.y, ImMin(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm) + grab_h_pixels, window_rect.Max.x), bb.Max.y);
-    else
-        grab_rect = ImRect(bb.Min.x, ImLerp(bb.Min.y, bb.Max.y, grab_v_norm), bb.Max.x, ImMin(ImLerp(bb.Min.y, bb.Max.y, grab_v_norm) + grab_h_pixels, window_rect.Max.y));
-    window->DrawList->AddRectFilled(grab_rect.Min, grab_rect.Max, grab_col, style.ScrollbarRounding);
-}
-
 void ImGui::BringWindowToFront(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -7871,177 +6012,6 @@
     return window->DC.StateStorage;
 }
 
-void ImGui::TextV(const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const char* text_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    TextUnformatted(g.TempBuffer, text_end);
-}
-
-void ImGui::Text(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextColoredV(const ImVec4& col, const char* fmt, va_list args)
-{
-    PushStyleColor(ImGuiCol_Text, col);
-    TextV(fmt, args);
-    PopStyleColor();
-}
-
-void ImGui::TextColored(const ImVec4& col, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextColoredV(col, fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextDisabledV(const char* fmt, va_list args)
-{
-    PushStyleColor(ImGuiCol_Text, GImGui->Style.Colors[ImGuiCol_TextDisabled]);
-    TextV(fmt, args);
-    PopStyleColor();
-}
-
-void ImGui::TextDisabled(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextDisabledV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextWrappedV(const char* fmt, va_list args)
-{
-    bool need_wrap = (GImGui->CurrentWindow->DC.TextWrapPos < 0.0f);    // Keep existing wrap position is one ia already set
-    if (need_wrap) PushTextWrapPos(0.0f);
-    TextV(fmt, args);
-    if (need_wrap) PopTextWrapPos();
-}
-
-void ImGui::TextWrapped(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextWrappedV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextUnformatted(const char* text, const char* text_end)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(text != NULL);
-    const char* text_begin = text;
-    if (text_end == NULL)
-        text_end = text + strlen(text); // FIXME-OPT
-
-    const ImVec2 text_pos(window->DC.CursorPos.x, window->DC.CursorPos.y + window->DC.CurrentLineTextBaseOffset);
-    const float wrap_pos_x = window->DC.TextWrapPos;
-    const bool wrap_enabled = wrap_pos_x >= 0.0f;
-    if (text_end - text > 2000 && !wrap_enabled)
-    {
-        // Long text!
-        // Perform manual coarse clipping to optimize for long multi-line text
-        // From this point we will only compute the width of lines that are visible. Optimization only available when word-wrapping is disabled.
-        // We also don't vertically center the text within the line full height, which is unlikely to matter because we are likely the biggest and only item on the line.
-        const char* line = text;
-        const float line_height = GetTextLineHeight();
-        const ImRect clip_rect = window->ClipRect;
-        ImVec2 text_size(0,0);
-
-        if (text_pos.y <= clip_rect.Max.y)
-        {
-            ImVec2 pos = text_pos;
-
-            // Lines to skip (can't skip when logging text)
-            if (!g.LogEnabled)
-            {
-                int lines_skippable = (int)((clip_rect.Min.y - text_pos.y) / line_height);
-                if (lines_skippable > 0)
-                {
-                    int lines_skipped = 0;
-                    while (line < text_end && lines_skipped < lines_skippable)
-                    {
-                        const char* line_end = strchr(line, '\n');
-                        if (!line_end)
-                            line_end = text_end;
-                        line = line_end + 1;
-                        lines_skipped++;
-                    }
-                    pos.y += lines_skipped * line_height;
-                }
-            }
-
-            // Lines to render
-            if (line < text_end)
-            {
-                ImRect line_rect(pos, pos + ImVec2(FLT_MAX, line_height));
-                while (line < text_end)
-                {
-                    const char* line_end = strchr(line, '\n');
-                    if (IsClippedEx(line_rect, 0, false))
-                        break;
-
-                    const ImVec2 line_size = CalcTextSize(line, line_end, false);
-                    text_size.x = ImMax(text_size.x, line_size.x);
-                    RenderText(pos, line, line_end, false);
-                    if (!line_end)
-                        line_end = text_end;
-                    line = line_end + 1;
-                    line_rect.Min.y += line_height;
-                    line_rect.Max.y += line_height;
-                    pos.y += line_height;
-                }
-
-                // Count remaining lines
-                int lines_skipped = 0;
-                while (line < text_end)
-                {
-                    const char* line_end = strchr(line, '\n');
-                    if (!line_end)
-                        line_end = text_end;
-                    line = line_end + 1;
-                    lines_skipped++;
-                }
-                pos.y += lines_skipped * line_height;
-            }
-
-            text_size.y += (pos - text_pos).y;
-        }
-
-        ImRect bb(text_pos, text_pos + text_size);
-        ItemSize(bb);
-        ItemAdd(bb, 0);
-    }
-    else
-    {
-        const float wrap_width = wrap_enabled ? CalcWrapWidthForPos(window->DC.CursorPos, wrap_pos_x) : 0.0f;
-        const ImVec2 text_size = CalcTextSize(text_begin, text_end, false, wrap_width);
-
-        // Account of baseline offset
-        ImRect bb(text_pos, text_pos + text_size);
-        ItemSize(text_size);
-        if (!ItemAdd(bb, 0))
-            return;
-
-        // Render (we don't hide text after ## in this end-user function)
-        RenderTextWrapped(bb.Min, text_begin, text_end, wrap_width);
-    }
-}
-
 void ImGui::AlignTextToFramePadding()
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -8053,864 +6023,6 @@
     window->DC.CurrentLineTextBaseOffset = ImMax(window->DC.CurrentLineTextBaseOffset, g.Style.FramePadding.y);
 }
 
-// Add a label+text combo aligned to other label+value widgets
-void ImGui::LabelTextV(const char* label, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect value_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2));
-    const ImRect total_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w + (label_size.x > 0.0f ? style.ItemInnerSpacing.x : 0.0f), style.FramePadding.y*2) + label_size);
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, 0))
-        return;
-
-    // Render
-    const char* value_text_begin = &g.TempBuffer[0];
-    const char* value_text_end = value_text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    RenderTextClipped(value_bb.Min, value_bb.Max, value_text_begin, value_text_end, NULL, ImVec2(0.0f,0.5f));
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(value_bb.Max.x + style.ItemInnerSpacing.x, value_bb.Min.y + style.FramePadding.y), label);
-}
-
-void ImGui::LabelText(const char* label, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    LabelTextV(label, fmt, args);
-    va_end(args);
-}
-
-bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool* out_held, ImGuiButtonFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-
-    if (flags & ImGuiButtonFlags_Disabled)
-    {
-        if (out_hovered) *out_hovered = false;
-        if (out_held) *out_held = false;
-        if (g.ActiveId == id) ClearActiveID();
-        return false;
-    }
-
-    // Default behavior requires click+release on same spot
-    if ((flags & (ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnClick | ImGuiButtonFlags_PressedOnRelease | ImGuiButtonFlags_PressedOnDoubleClick)) == 0)
-        flags |= ImGuiButtonFlags_PressedOnClickRelease;
-
-    ImGuiWindow* backup_hovered_window = g.HoveredWindow;
-    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
-        g.HoveredWindow = window;
-
-    bool pressed = false;
-    bool hovered = ItemHoverable(bb, id);
-
-    // Drag source doesn't report as hovered
-    if (hovered && g.DragDropActive && g.DragDropPayload.SourceId == id && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoDisableHover))
-        hovered = false;
-
-    // Special mode for Drag and Drop where holding button pressed for a long time while dragging another item triggers the button
-    if (g.DragDropActive && (flags & ImGuiButtonFlags_PressedOnDragDropHold) && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoHoldToOpenOthers))
-        if (IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem))
-        {
-            hovered = true;
-            SetHoveredID(id);
-            if (CalcTypematicPressedRepeatAmount(g.HoveredIdTimer + 0.0001f, g.HoveredIdTimer + 0.0001f - g.IO.DeltaTime, 0.01f, 0.70f)) // FIXME: Our formula for CalcTypematicPressedRepeatAmount() is fishy
-            {
-                pressed = true;
-                FocusWindow(window);
-            }
-        }
-
-    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
-        g.HoveredWindow = backup_hovered_window;
-
-    // AllowOverlap mode (rarely used) requires previous frame HoveredId to be null or to match. This allows using patterns where a later submitted widget overlaps a previous one.
-    if (hovered && (flags & ImGuiButtonFlags_AllowItemOverlap) && (g.HoveredIdPreviousFrame != id && g.HoveredIdPreviousFrame != 0))
-        hovered = false;
-
-    // Mouse
-    if (hovered)
-    {
-        if (!(flags & ImGuiButtonFlags_NoKeyModifiers) || (!g.IO.KeyCtrl && !g.IO.KeyShift && !g.IO.KeyAlt))
-        {
-            //                        | CLICKING        | HOLDING with ImGuiButtonFlags_Repeat
-            // PressedOnClickRelease  |  <on release>*  |  <on repeat> <on repeat> .. (NOT on release)  <-- MOST COMMON! (*) only if both click/release were over bounds
-            // PressedOnClick         |  <on click>     |  <on click> <on repeat> <on repeat> ..
-            // PressedOnRelease       |  <on release>   |  <on repeat> <on repeat> .. (NOT on release)
-            // PressedOnDoubleClick   |  <on dclick>    |  <on dclick> <on repeat> <on repeat> ..
-            // FIXME-NAV: We don't honor those different behaviors.
-            if ((flags & ImGuiButtonFlags_PressedOnClickRelease) && g.IO.MouseClicked[0])
-            {
-                SetActiveID(id, window);
-                if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                    SetFocusID(id, window);
-                FocusWindow(window);
-            }
-            if (((flags & ImGuiButtonFlags_PressedOnClick) && g.IO.MouseClicked[0]) || ((flags & ImGuiButtonFlags_PressedOnDoubleClick) && g.IO.MouseDoubleClicked[0]))
-            {
-                pressed = true;
-                if (flags & ImGuiButtonFlags_NoHoldingActiveID)
-                    ClearActiveID();
-                else
-                    SetActiveID(id, window); // Hold on ID
-                FocusWindow(window);
-            }
-            if ((flags & ImGuiButtonFlags_PressedOnRelease) && g.IO.MouseReleased[0])
-            {
-                if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
-                    pressed = true;
-                ClearActiveID();
-            }
-
-            // 'Repeat' mode acts when held regardless of _PressedOn flags (see table above).
-            // Relies on repeat logic of IsMouseClicked() but we may as well do it ourselves if we end up exposing finer RepeatDelay/RepeatRate settings.
-            if ((flags & ImGuiButtonFlags_Repeat) && g.ActiveId == id && g.IO.MouseDownDuration[0] > 0.0f && IsMouseClicked(0, true))
-                pressed = true;
-        }
-
-        if (pressed)
-            g.NavDisableHighlight = true;
-    }
-
-    // Gamepad/Keyboard navigation
-    // We report navigated item as hovered but we don't set g.HoveredId to not interfere with mouse.
-    if (g.NavId == id && !g.NavDisableHighlight && g.NavDisableMouseHover && (g.ActiveId == 0 || g.ActiveId == id || g.ActiveId == window->MoveId))
-        hovered = true;
-
-    if (g.NavActivateDownId == id)
-    {
-        bool nav_activated_by_code = (g.NavActivateId == id);
-        bool nav_activated_by_inputs = IsNavInputPressed(ImGuiNavInput_Activate, (flags & ImGuiButtonFlags_Repeat) ? ImGuiInputReadMode_Repeat : ImGuiInputReadMode_Pressed);
-        if (nav_activated_by_code || nav_activated_by_inputs)
-            pressed = true;
-        if (nav_activated_by_code || nav_activated_by_inputs || g.ActiveId == id)
-        {
-            // Set active id so it can be queried by user via IsItemActive(), equivalent of holding the mouse button.
-            g.NavActivateId = id; // This is so SetActiveId assign a Nav source
-            SetActiveID(id, window);
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                SetFocusID(id, window);
-            g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right) | (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        }
-    }
-
-    bool held = false;
-    if (g.ActiveId == id)
-    {
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
-        {
-            if (g.ActiveIdIsJustActivated)
-                g.ActiveIdClickOffset = g.IO.MousePos - bb.Min;
-            if (g.IO.MouseDown[0])
-            {
-                held = true;
-            }
-            else
-            {
-                if (hovered && (flags & ImGuiButtonFlags_PressedOnClickRelease))
-                    if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
-                        if (!g.DragDropActive)
-                            pressed = true;
-                ClearActiveID();
-            }
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                g.NavDisableHighlight = true;
-        }
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-        {
-            if (g.NavActivateDownId != id)
-                ClearActiveID();
-        }
-    }
-
-    if (out_hovered) *out_hovered = hovered;
-    if (out_held) *out_held = held;
-
-    return pressed;
-}
-
-bool ImGui::ButtonEx(const char* label, const ImVec2& size_arg, ImGuiButtonFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    ImVec2 pos = window->DC.CursorPos;
-    if ((flags & ImGuiButtonFlags_AlignTextBaseLine) && style.FramePadding.y < window->DC.CurrentLineTextBaseOffset) // Try to vertically align buttons that are smaller/have no padding so that text baseline matches (bit hacky, since it shouldn't be a flag)
-        pos.y += window->DC.CurrentLineTextBaseOffset - style.FramePadding.y;
-    ImVec2 size = CalcItemSize(size_arg, label_size.x + style.FramePadding.x * 2.0f, label_size.y + style.FramePadding.y * 2.0f);
-
-    const ImRect bb(pos, pos + size);
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
-        flags |= ImGuiButtonFlags_Repeat;
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
-    if (pressed)
-        MarkItemEdited(id);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, style.FrameRounding);
-    RenderTextClipped(bb.Min + style.FramePadding, bb.Max - style.FramePadding, label, NULL, &label_size, style.ButtonTextAlign, &bb);
-
-    // Automatically close popups
-    //if (pressed && !(flags & ImGuiButtonFlags_DontClosePopups) && (window->Flags & ImGuiWindowFlags_Popup))
-    //    CloseCurrentPopup();
-
-    return pressed;
-}
-
-bool ImGui::Button(const char* label, const ImVec2& size_arg)
-{
-    return ButtonEx(label, size_arg, 0);
-}
-
-// Small buttons fits within text without additional vertical spacing.
-bool ImGui::SmallButton(const char* label)
-{
-    ImGuiContext& g = *GImGui;
-    float backup_padding_y = g.Style.FramePadding.y;
-    g.Style.FramePadding.y = 0.0f;
-    bool pressed = ButtonEx(label, ImVec2(0,0), ImGuiButtonFlags_AlignTextBaseLine);
-    g.Style.FramePadding.y = backup_padding_y;
-    return pressed;
-}
-
-bool ImGui::ArrowButtonEx(const char* str_id, ImGuiDir dir, ImVec2 size, ImGuiButtonFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiID id = window->GetID(str_id);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const float default_size = GetFrameHeight();
-    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
-        flags |= ImGuiButtonFlags_Repeat;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, g.Style.FrameRounding);
-    RenderArrow(bb.Min + ImVec2(ImMax(0.0f, size.x - g.FontSize - g.Style.FramePadding.x), ImMax(0.0f, size.y - g.FontSize - g.Style.FramePadding.y)), dir);
-
-    return pressed;
-}
-
-bool ImGui::ArrowButton(const char* str_id, ImGuiDir dir)
-{
-    float sz = GetFrameHeight();
-    return ArrowButtonEx(str_id, dir, ImVec2(sz, sz), 0);
-}
-
-// Tip: use ImGui::PushID()/PopID() to push indices or pointers in the ID stack.
-// Then you can keep 'str_id' empty or the same for all your buttons (instead of creating a string based on a non-string id)
-bool ImGui::InvisibleButton(const char* str_id, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    // Cannot use zero-size for InvisibleButton(). Unlike Button() there is not way to fallback using the label size.
-    IM_ASSERT(size_arg.x != 0.0f && size_arg.y != 0.0f);
-
-    const ImGuiID id = window->GetID(str_id);
-    ImVec2 size = CalcItemSize(size_arg, 0.0f, 0.0f);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    ItemSize(bb);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    return pressed;
-}
-
-// Button to close a window
-bool ImGui::CloseButton(ImGuiID id, const ImVec2& pos, float radius)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    // We intentionally allow interaction when clipped so that a mechanical Alt,Right,Validate sequence close a window.
-    // (this isn't the regular behavior of buttons, but it doesn't affect the user much because navigation tends to keep items visible).
-    const ImRect bb(pos - ImVec2(radius,radius), pos + ImVec2(radius,radius));
-    bool is_clipped = !ItemAdd(bb, id);
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-    if (is_clipped)
-        return pressed;
-
-    // Render
-    ImVec2 center = bb.GetCenter();
-    if (hovered)
-        window->DrawList->AddCircleFilled(center, ImMax(2.0f, radius), GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : ImGuiCol_ButtonHovered), 9);
-
-    float cross_extent = (radius * 0.7071f) - 1.0f;
-    ImU32 cross_col = GetColorU32(ImGuiCol_Text);
-    center -= ImVec2(0.5f, 0.5f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent,+cross_extent), center + ImVec2(-cross_extent,-cross_extent), cross_col, 1.0f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent,-cross_extent), center + ImVec2(-cross_extent,+cross_extent), cross_col, 1.0f);
-
-    return pressed;
-}
-
-bool ImGui::CollapseButton(ImGuiID id, const ImVec2& pos)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    ImRect bb(pos, pos + ImVec2(g.FontSize, g.FontSize) + g.Style.FramePadding * 2.0f);
-    ItemAdd(bb, id);
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_None);
-
-    ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    if (hovered || held)
-        window->DrawList->AddCircleFilled(bb.GetCenter() + ImVec2(0.0f, -0.5f), g.FontSize * 0.5f + 1.0f, col, 9);
-    RenderArrow(bb.Min + g.Style.FramePadding, window->Collapsed ? ImGuiDir_Right : ImGuiDir_Down, 1.0f);
-
-    // Switch to moving the window after mouse is moved beyond the initial drag threshold
-    if (IsItemActive() && IsMouseDragging())
-        StartMouseMovingWindow(window);
-
-    return pressed;
-}
-
-void ImGui::Image(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, const ImVec4& tint_col, const ImVec4& border_col)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    if (border_col.w > 0.0f)
-        bb.Max += ImVec2(2,2);
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    if (border_col.w > 0.0f)
-    {
-        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(border_col), 0.0f);
-        window->DrawList->AddImage(user_texture_id, bb.Min+ImVec2(1,1), bb.Max-ImVec2(1,1), uv0, uv1, GetColorU32(tint_col));
-    }
-    else
-    {
-        window->DrawList->AddImage(user_texture_id, bb.Min, bb.Max, uv0, uv1, GetColorU32(tint_col));
-    }
-}
-
-// frame_padding < 0: uses FramePadding from style (default)
-// frame_padding = 0: no framing
-// frame_padding > 0: set framing size
-// The color used are the button colors.
-bool ImGui::ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, int frame_padding, const ImVec4& bg_col, const ImVec4& tint_col)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    // Default to using texture ID as ID. User can still push string/integer prefixes.
-    // We could hash the size/uv to create a unique ID but that would prevent the user from animating UV.
-    PushID((void*)user_texture_id);
-    const ImGuiID id = window->GetID("#image");
-    PopID();
-
-    const ImVec2 padding = (frame_padding >= 0) ? ImVec2((float)frame_padding, (float)frame_padding) : style.FramePadding;
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size + padding*2);
-    const ImRect image_bb(window->DC.CursorPos + padding, window->DC.CursorPos + padding + size);
-    ItemSize(bb);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, ImClamp((float)ImMin(padding.x, padding.y), 0.0f, style.FrameRounding));
-    if (bg_col.w > 0.0f)
-        window->DrawList->AddRectFilled(image_bb.Min, image_bb.Max, GetColorU32(bg_col));
-    window->DrawList->AddImage(user_texture_id, image_bb.Min, image_bb.Max, uv0, uv1, GetColorU32(tint_col));
-
-    return pressed;
-}
-
-// Start logging ImGui output to TTY
-void ImGui::LogToTTY(int max_depth)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = stdout;
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-// Start logging ImGui output to given file
-void ImGui::LogToFile(int max_depth, const char* filename)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    if (!filename)
-    {
-        filename = g.IO.LogFilename;
-        if (!filename)
-            return;
-    }
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = ImFileOpen(filename, "ab");
-    if (!g.LogFile)
-    {
-        IM_ASSERT(g.LogFile != NULL); // Consider this an error
-        return;
-    }
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-// Start logging ImGui output to clipboard
-void ImGui::LogToClipboard(int max_depth)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = NULL;
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-void ImGui::LogFinish()
-{
-    ImGuiContext& g = *GImGui;
-    if (!g.LogEnabled)
-        return;
-
-    LogText(IM_NEWLINE);
-    if (g.LogFile != NULL)
-    {
-        if (g.LogFile == stdout)
-            fflush(g.LogFile);
-        else
-            fclose(g.LogFile);
-        g.LogFile = NULL;
-    }
-    if (g.LogClipboard.size() > 1)
-    {
-        SetClipboardText(g.LogClipboard.begin());
-        g.LogClipboard.clear();
-    }
-    g.LogEnabled = false;
-}
-
-// Helper to display logging buttons
-void ImGui::LogButtons()
-{
-    ImGuiContext& g = *GImGui;
-
-    PushID("LogButtons");
-    const bool log_to_tty = Button("Log To TTY"); SameLine();
-    const bool log_to_file = Button("Log To File"); SameLine();
-    const bool log_to_clipboard = Button("Log To Clipboard"); SameLine();
-    PushItemWidth(80.0f);
-    PushAllowKeyboardFocus(false);
-    SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL);
-    PopAllowKeyboardFocus();
-    PopItemWidth();
-    PopID();
-
-    // Start logging at the end of the function so that the buttons don't appear in the log
-    if (log_to_tty)
-        LogToTTY(g.LogAutoExpandMaxDepth);
-    if (log_to_file)
-        LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename);
-    if (log_to_clipboard)
-        LogToClipboard(g.LogAutoExpandMaxDepth);
-}
-
-bool ImGui::TreeNodeBehaviorIsOpen(ImGuiID id, ImGuiTreeNodeFlags flags)
-{
-    if (flags & ImGuiTreeNodeFlags_Leaf)
-        return true;
-
-    // We only write to the tree storage if the user clicks (or explicitly use SetNextTreeNode*** functions)
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    ImGuiStorage* storage = window->DC.StateStorage;
-
-    bool is_open;
-    if (g.NextTreeNodeOpenCond != 0)
-    {
-        if (g.NextTreeNodeOpenCond & ImGuiCond_Always)
-        {
-            is_open = g.NextTreeNodeOpenVal;
-            storage->SetInt(id, is_open);
-        }
-        else
-        {
-            // We treat ImGuiCond_Once and ImGuiCond_FirstUseEver the same because tree node state are not saved persistently.
-            const int stored_value = storage->GetInt(id, -1);
-            if (stored_value == -1)
-            {
-                is_open = g.NextTreeNodeOpenVal;
-                storage->SetInt(id, is_open);
-            }
-            else
-            {
-                is_open = stored_value != 0;
-            }
-        }
-        g.NextTreeNodeOpenCond = 0;
-    }
-    else
-    {
-        is_open = storage->GetInt(id, (flags & ImGuiTreeNodeFlags_DefaultOpen) ? 1 : 0) != 0;
-    }
-
-    // When logging is enabled, we automatically expand tree nodes (but *NOT* collapsing headers.. seems like sensible behavior).
-    // NB- If we are above max depth we still allow manually opened nodes to be logged.
-    if (g.LogEnabled && !(flags & ImGuiTreeNodeFlags_NoAutoOpenOnLog) && window->DC.TreeDepth < g.LogAutoExpandMaxDepth)
-        is_open = true;
-
-    return is_open;
-}
-
-bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* label, const char* label_end)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const bool display_frame = (flags & ImGuiTreeNodeFlags_Framed) != 0;
-    const ImVec2 padding = (display_frame || (flags & ImGuiTreeNodeFlags_FramePadding)) ? style.FramePadding : ImVec2(style.FramePadding.x, 0.0f);
-
-    if (!label_end)
-        label_end = FindRenderedTextEnd(label);
-    const ImVec2 label_size = CalcTextSize(label, label_end, false);
-
-    // We vertically grow up to current line height up the typical widget height.
-    const float text_base_offset_y = ImMax(padding.y, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
-    const float frame_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + style.FramePadding.y*2), label_size.y + padding.y*2);
-    ImRect frame_bb = ImRect(window->DC.CursorPos, ImVec2(window->Pos.x + GetContentRegionMax().x, window->DC.CursorPos.y + frame_height));
-    if (display_frame)
-    {
-        // Framed header expand a little outside the default padding
-        frame_bb.Min.x -= (float)(int)(window->WindowPadding.x*0.5f) - 1;
-        frame_bb.Max.x += (float)(int)(window->WindowPadding.x*0.5f) - 1;
-    }
-
-    const float text_offset_x = (g.FontSize + (display_frame ? padding.x*3 : padding.x*2));   // Collapser arrow width + Spacing
-    const float text_width = g.FontSize + (label_size.x > 0.0f ? label_size.x + padding.x*2 : 0.0f);   // Include collapser
-    ItemSize(ImVec2(text_width, frame_height), text_base_offset_y);
-
-    // For regular tree nodes, we arbitrary allow to click past 2 worth of ItemSpacing
-    // (Ideally we'd want to add a flag for the user to specify if we want the hit test to be done up to the right side of the content or not)
-    const ImRect interact_bb = display_frame ? frame_bb : ImRect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + text_width + style.ItemSpacing.x*2, frame_bb.Max.y);
-    bool is_open = TreeNodeBehaviorIsOpen(id, flags);
-
-    // Store a flag for the current depth to tell if we will allow closing this node when navigating one of its child.
-    // For this purpose we essentially compare if g.NavIdIsAlive went from 0 to 1 between TreeNode() and TreePop().
-    // This is currently only support 32 level deep and we are fine with (1 << Depth) overflowing into a zero.
-    if (is_open && !g.NavIdIsAlive && (flags & ImGuiTreeNodeFlags_NavLeftJumpsBackHere) && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        window->DC.TreeDepthMayJumpToParentOnPop |= (1 << window->DC.TreeDepth);
-
-    bool item_add = ItemAdd(interact_bb, id);
-    window->DC.LastItemStatusFlags |= ImGuiItemStatusFlags_HasDisplayRect;
-    window->DC.LastItemDisplayRect = frame_bb;
-
-    if (!item_add)
-    {
-        if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-            TreePushRawID(id);
-        return is_open;
-    }
-
-    // Flags that affects opening behavior:
-    // - 0(default) ..................... single-click anywhere to open
-    // - OpenOnDoubleClick .............. double-click anywhere to open
-    // - OpenOnArrow .................... single-click on arrow to open
-    // - OpenOnDoubleClick|OpenOnArrow .. single-click on arrow or double-click anywhere to open
-    ImGuiButtonFlags button_flags = ImGuiButtonFlags_NoKeyModifiers | ((flags & ImGuiTreeNodeFlags_AllowItemOverlap) ? ImGuiButtonFlags_AllowItemOverlap : 0);
-    if (!(flags & ImGuiTreeNodeFlags_Leaf))
-        button_flags |= ImGuiButtonFlags_PressedOnDragDropHold;
-    if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
-        button_flags |= ImGuiButtonFlags_PressedOnDoubleClick | ((flags & ImGuiTreeNodeFlags_OpenOnArrow) ? ImGuiButtonFlags_PressedOnClickRelease : 0);
-
-    bool hovered, held, pressed = ButtonBehavior(interact_bb, id, &hovered, &held, button_flags);
-    if (!(flags & ImGuiTreeNodeFlags_Leaf))
-    {
-        bool toggled = false;
-        if (pressed)
-        {
-            toggled = !(flags & (ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick)) || (g.NavActivateId == id);
-            if (flags & ImGuiTreeNodeFlags_OpenOnArrow)
-                toggled |= IsMouseHoveringRect(interact_bb.Min, ImVec2(interact_bb.Min.x + text_offset_x, interact_bb.Max.y)) && (!g.NavDisableMouseHover);
-            if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
-                toggled |= g.IO.MouseDoubleClicked[0];
-            if (g.DragDropActive && is_open) // When using Drag and Drop "hold to open" we keep the node highlighted after opening, but never close it again.
-                toggled = false;
-        }
-
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Left && is_open)
-        {
-            toggled = true;
-            NavMoveRequestCancel();
-        }
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right && !is_open) // If there's something upcoming on the line we may want to give it the priority?
-        {
-            toggled = true;
-            NavMoveRequestCancel();
-        }
-
-        if (toggled)
-        {
-            is_open = !is_open;
-            window->DC.StateStorage->SetInt(id, is_open);
-        }
-    }
-    if (flags & ImGuiTreeNodeFlags_AllowItemOverlap)
-        SetItemAllowOverlap();
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
-    const ImVec2 text_pos = frame_bb.Min + ImVec2(text_offset_x, text_base_offset_y);
-    if (display_frame)
-    {
-        // Framed type
-        RenderFrame(frame_bb.Min, frame_bb.Max, col, true, style.FrameRounding);
-        RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
-        RenderArrow(frame_bb.Min + ImVec2(padding.x, text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 1.0f);
-        if (g.LogEnabled)
-        {
-            // NB: '##' is normally used to hide text (as a library-wide feature), so we need to specify the text range to make sure the ## aren't stripped out here.
-            const char log_prefix[] = "\n##";
-            const char log_suffix[] = "##";
-            LogRenderedText(&text_pos, log_prefix, log_prefix+3);
-            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
-            LogRenderedText(&text_pos, log_suffix+1, log_suffix+3);
-        }
-        else
-        {
-            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
-        }
-    }
-    else
-    {
-        // Unframed typed for tree nodes
-        if (hovered || (flags & ImGuiTreeNodeFlags_Selected))
-        {
-            RenderFrame(frame_bb.Min, frame_bb.Max, col, false);
-            RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
-        }
-
-        if (flags & ImGuiTreeNodeFlags_Bullet)
-            RenderBullet(frame_bb.Min + ImVec2(text_offset_x * 0.5f, g.FontSize*0.50f + text_base_offset_y));
-        else if (!(flags & ImGuiTreeNodeFlags_Leaf))
-            RenderArrow(frame_bb.Min + ImVec2(padding.x, g.FontSize*0.15f + text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 0.70f);
-        if (g.LogEnabled)
-            LogRenderedText(&text_pos, ">");
-        RenderText(text_pos, label, label_end, false);
-    }
-
-    if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        TreePushRawID(id);
-    return is_open;
-}
-
-// CollapsingHeader returns true when opened but do not indent nor push into the ID stack (because of the ImGuiTreeNodeFlags_NoTreePushOnOpen flag).
-// This is basically the same as calling TreeNodeEx(label, ImGuiTreeNodeFlags_CollapsingHeader). You can remove the _NoTreePushOnOpen flag if you want behavior closer to normal TreeNode().
-bool ImGui::CollapsingHeader(const char* label, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags | ImGuiTreeNodeFlags_CollapsingHeader, label);
-}
-
-bool ImGui::CollapsingHeader(const char* label, bool* p_open, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    if (p_open && !*p_open)
-        return false;
-
-    ImGuiID id = window->GetID(label);
-    bool is_open = TreeNodeBehavior(id, flags | ImGuiTreeNodeFlags_CollapsingHeader | (p_open ? ImGuiTreeNodeFlags_AllowItemOverlap : 0), label);
-    if (p_open)
-    {
-        // Create a small overlapping close button // FIXME: We can evolve this into user accessible helpers to add extra buttons on title bars, headers, etc.
-        ImGuiContext& g = *GImGui;
-        ImGuiItemHoveredDataBackup last_item_backup;
-        float button_radius = g.FontSize * 0.5f;
-        ImVec2 button_center = ImVec2(ImMin(window->DC.LastItemRect.Max.x, window->ClipRect.Max.x) - g.Style.FramePadding.x - button_radius, window->DC.LastItemRect.GetCenter().y);
-        if (CloseButton(window->GetID((void*)(intptr_t)(id+1)), button_center, button_radius))
-            *p_open = false;
-        last_item_backup.Restore();
-    }
-
-    return is_open;
-}
-
-bool ImGui::TreeNodeEx(const char* label, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags, label, NULL);
-}
-
-bool ImGui::TreeNodeExV(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    return TreeNodeBehavior(window->GetID(str_id), flags, g.TempBuffer, label_end);
-}
-
-bool ImGui::TreeNodeExV(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    return TreeNodeBehavior(window->GetID(ptr_id), flags, g.TempBuffer, label_end);
-}
-
-bool ImGui::TreeNodeV(const char* str_id, const char* fmt, va_list args)
-{
-    return TreeNodeExV(str_id, 0, fmt, args);
-}
-
-bool ImGui::TreeNodeV(const void* ptr_id, const char* fmt, va_list args)
-{
-    return TreeNodeExV(ptr_id, 0, fmt, args);
-}
-
-bool ImGui::TreeNodeEx(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(str_id, flags, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNodeEx(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(ptr_id, flags, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const char* str_id, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(str_id, 0, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const void* ptr_id, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(ptr_id, 0, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const char* label)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-    return TreeNodeBehavior(window->GetID(label), 0, label, NULL);
-}
-
-void ImGui::TreeAdvanceToLabelPos()
-{
-    ImGuiContext& g = *GImGui;
-    g.CurrentWindow->DC.CursorPos.x += GetTreeNodeToLabelSpacing();
-}
-
-// Horizontal distance preceding label when using TreeNode() or Bullet()
-float ImGui::GetTreeNodeToLabelSpacing()
-{
-    ImGuiContext& g = *GImGui;
-    return g.FontSize + (g.Style.FramePadding.x * 2.0f);
-}
-
-void ImGui::SetNextTreeNodeOpen(bool is_open, ImGuiCond cond)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow->SkipItems)
-        return;
-    g.NextTreeNodeOpenVal = is_open;
-    g.NextTreeNodeOpenCond = cond ? cond : ImGuiCond_Always;
-}
-
 void ImGui::PushID(const char* str_id)
 {
     ImGuiWindow* window = GetCurrentWindowRead();
@@ -8957,4093 +6069,6 @@
     return GImGui->CurrentWindow->GetID(ptr_id);
 }
 
-void ImGui::Bullet()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize, line_height));
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-    {
-        SameLine(0, style.FramePadding.x*2);
-        return;
-    }
-
-    // Render and stay on same line
-    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
-    SameLine(0, style.FramePadding.x*2);
-}
-
-// Text with a little bullet aligned to the typical tree node.
-void ImGui::BulletTextV(const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const char* text_begin = g.TempBuffer;
-    const char* text_end = text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    const ImVec2 label_size = CalcTextSize(text_begin, text_end, false);
-    const float text_base_offset_y = ImMax(0.0f, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
-    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize + (label_size.x > 0.0f ? (label_size.x + style.FramePadding.x*2) : 0.0f), ImMax(line_height, label_size.y)));  // Empty text doesn't add padding
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    // Render
-    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
-    RenderText(bb.Min+ImVec2(g.FontSize + style.FramePadding.x*2, text_base_offset_y), text_begin, text_end, false);
-}
-
-void ImGui::BulletText(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    BulletTextV(fmt, args);
-    va_end(args);
-}
-
-static inline int DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format)
-{
-    if (data_type == ImGuiDataType_S32 || data_type == ImGuiDataType_U32)   // Signedness doesn't matter when pushing the argument
-        return ImFormatString(buf, buf_size, format, *(const ImU32*)data_ptr);
-    if (data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)   // Signedness doesn't matter when pushing the argument
-        return ImFormatString(buf, buf_size, format, *(const ImU64*)data_ptr);
-    if (data_type == ImGuiDataType_Float)
-        return ImFormatString(buf, buf_size, format, *(const float*)data_ptr);
-    if (data_type == ImGuiDataType_Double)
-        return ImFormatString(buf, buf_size, format, *(const double*)data_ptr);
-    IM_ASSERT(0);
-    return 0;
-}
-
-// FIXME: Adding support for clamping on boundaries of the data type would be nice.
-static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg1, const void* arg2)
-{
-    IM_ASSERT(op == '+' || op == '-');
-    switch (data_type)
-    {
-        case ImGuiDataType_S32:
-            if (op == '+')      *(int*)output = *(const int*)arg1 + *(const int*)arg2;
-            else if (op == '-') *(int*)output = *(const int*)arg1 - *(const int*)arg2;
-            return;
-        case ImGuiDataType_U32:
-            if (op == '+')      *(unsigned int*)output = *(const unsigned int*)arg1 + *(const ImU32*)arg2;
-            else if (op == '-') *(unsigned int*)output = *(const unsigned int*)arg1 - *(const ImU32*)arg2;
-            return;
-        case ImGuiDataType_S64:
-            if (op == '+')      *(ImS64*)output = *(const ImS64*)arg1 + *(const ImS64*)arg2;
-            else if (op == '-') *(ImS64*)output = *(const ImS64*)arg1 - *(const ImS64*)arg2;
-            return;
-        case ImGuiDataType_U64:
-            if (op == '+')      *(ImU64*)output = *(const ImU64*)arg1 + *(const ImU64*)arg2;
-            else if (op == '-') *(ImU64*)output = *(const ImU64*)arg1 - *(const ImU64*)arg2;
-            return;
-        case ImGuiDataType_Float:
-            if (op == '+')      *(float*)output = *(const float*)arg1 + *(const float*)arg2;
-            else if (op == '-') *(float*)output = *(const float*)arg1 - *(const float*)arg2;
-            return;
-        case ImGuiDataType_Double:
-            if (op == '+')      *(double*)output = *(const double*)arg1 + *(const double*)arg2;
-            else if (op == '-') *(double*)output = *(const double*)arg1 - *(const double*)arg2;
-            return;
-        case ImGuiDataType_COUNT: break;
-    }
-    IM_ASSERT(0);
-}
-
-struct ImGuiDataTypeInfo
-{
-    size_t      Size;
-    const char* PrintFmt;   // Unused
-    const char* ScanFmt;
-};
-
-static const ImGuiDataTypeInfo GDataTypeInfo[] =
-{
-    { sizeof(int),          "%d",   "%d"    },
-    { sizeof(unsigned int), "%u",   "%u"    },
-#ifdef _MSC_VER
-    { sizeof(ImS64),        "%I64d","%I64d" },
-    { sizeof(ImU64),        "%I64u","%I64u" },
-#else
-    { sizeof(ImS64),        "%lld", "%lld"  },
-    { sizeof(ImU64),        "%llu", "%llu"  },
-#endif
-    { sizeof(float),        "%f",   "%f"    },  // float are promoted to double in va_arg
-    { sizeof(double),       "%f",   "%lf"   },
-};
-IM_STATIC_ASSERT(IM_ARRAYSIZE(GDataTypeInfo) == ImGuiDataType_COUNT);
-
-// User can input math operators (e.g. +100) to edit a numerical values.
-// NB: This is _not_ a full expression evaluator. We should probably add one and replace this dumb mess..
-static bool DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format)
-{
-    while (ImCharIsBlankA(*buf))
-        buf++;
-
-    // We don't support '-' op because it would conflict with inputing negative value.
-    // Instead you can use +-100 to subtract from an existing value
-    char op = buf[0];
-    if (op == '+' || op == '*' || op == '/')
-    {
-        buf++;
-        while (ImCharIsBlankA(*buf))
-            buf++;
-    }
-    else
-    {
-        op = 0;
-    }
-    if (!buf[0])
-        return false;
-
-    // Copy the value in an opaque buffer so we can compare at the end of the function if it changed at all.
-    IM_ASSERT(data_type < ImGuiDataType_COUNT);
-    int data_backup[2];
-    IM_ASSERT(GDataTypeInfo[data_type].Size <= sizeof(data_backup));
-    memcpy(data_backup, data_ptr, GDataTypeInfo[data_type].Size);
-
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].ScanFmt;
-
-    int arg1i = 0;
-    if (data_type == ImGuiDataType_S32)
-    {
-        int* v = (int*)data_ptr;
-        int arg0i = *v;
-        float arg1f = 0.0f;
-        if (op && sscanf(initial_value_buf, format, &arg0i) < 1)
-            return false;
-        // Store operand in a float so we can use fractional value for multipliers (*1.1), but constant always parsed as integer so we can fit big integers (e.g. 2000000003) past float precision
-        if (op == '+')      { if (sscanf(buf, "%d", &arg1i)) *v = (int)(arg0i + arg1i); }                   // Add (use "+-" to subtract)
-        else if (op == '*') { if (sscanf(buf, "%f", &arg1f)) *v = (int)(arg0i * arg1f); }                   // Multiply
-        else if (op == '/') { if (sscanf(buf, "%f", &arg1f) && arg1f != 0.0f) *v = (int)(arg0i / arg1f); }  // Divide
-        else                { if (sscanf(buf, format, &arg1i) == 1) *v = arg1i; }                           // Assign constant
-    }
-    else if (data_type == ImGuiDataType_U32 || data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)
-    {
-        // Assign constant
-        // FIXME: We don't bother handling support for legacy operators since they are a little too crappy. Instead we may implement a proper expression evaluator in the future.
-        sscanf(buf, format, data_ptr);
-    }
-    else if (data_type == ImGuiDataType_Float)
-    {
-        // For floats we have to ignore format with precision (e.g. "%.2f") because sscanf doesn't take them in
-        format = "%f";
-        float* v = (float*)data_ptr;
-        float arg0f = *v, arg1f = 0.0f;
-        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
-            return false;
-        if (sscanf(buf, format, &arg1f) < 1)
-            return false;
-        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
-        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
-        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
-        else                { *v = arg1f; }                            // Assign constant
-    }
-    else if (data_type == ImGuiDataType_Double)
-    {
-        format = "%lf"; // scanf differentiate float/double unlike printf which forces everything to double because of ellipsis
-        double* v = (double*)data_ptr;
-        double arg0f = *v, arg1f = 0.0;
-        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
-            return false;
-        if (sscanf(buf, format, &arg1f) < 1)
-            return false;
-        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
-        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
-        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
-        else                { *v = arg1f; }                            // Assign constant
-    }
-    return memcmp(data_backup, data_ptr, GDataTypeInfo[data_type].Size) != 0;
-}
-
-// Create text input in place of a slider (when CTRL+Clicking on slider)
-// FIXME: Logic is messy and confusing.
-bool ImGui::InputScalarAsWidgetReplacement(const ImRect& bb, ImGuiID id, const char* label, ImGuiDataType data_type, void* data_ptr, const char* format)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-
-    // Our replacement widget will override the focus ID (registered previously to allow for a TAB focus to happen)
-    // On the first frame, g.ScalarAsInputTextId == 0, then on subsequent frames it becomes == id
-    SetActiveID(g.ScalarAsInputTextId, window);
-    g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-    SetHoveredID(0);
-    FocusableItemUnregister(window);
-
-    char fmt_buf[32];
-    char data_buf[32];
-    format = ImParseFormatTrimDecorations(format, fmt_buf, IM_ARRAYSIZE(fmt_buf));
-    DataTypeFormatString(data_buf, IM_ARRAYSIZE(data_buf), data_type, data_ptr, format);
-    ImStrTrimBlanks(data_buf);
-    ImGuiInputTextFlags flags = ImGuiInputTextFlags_AutoSelectAll | ((data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImGuiInputTextFlags_CharsScientific : ImGuiInputTextFlags_CharsDecimal);
-    bool value_changed = InputTextEx(label, data_buf, IM_ARRAYSIZE(data_buf), bb.GetSize(), flags);
-    if (g.ScalarAsInputTextId == 0)     // First frame we started displaying the InputText widget
-    {
-        IM_ASSERT(g.ActiveId == id);    // InputText ID expected to match the Slider ID
-        g.ScalarAsInputTextId = g.ActiveId;
-        SetHoveredID(id);
-    }
-    if (value_changed)
-        return DataTypeApplyOpFromText(data_buf, g.InputTextState.InitialText.Data, data_type, data_ptr, NULL);
-    return false;
-}
-
-// We don't use strchr() because our strings are usually very short and often start with '%'
-const char* ImParseFormatFindStart(const char* fmt)
-{
-    while (char c = fmt[0])
-    {
-        if (c == '%' && fmt[1] != '%')
-            return fmt;
-        else if (c == '%')
-            fmt++;
-        fmt++;
-    }
-    return fmt;
-}
-
-const char* ImParseFormatFindEnd(const char* fmt)
-{
-    // Printf/scanf types modifiers: I/L/h/j/l/t/w/z. Other uppercase letters qualify as types aka end of the format.
-    if (fmt[0] != '%')
-        return fmt;
-    const unsigned int ignored_uppercase_mask = (1 << ('I'-'A')) | (1 << ('L'-'A'));
-    const unsigned int ignored_lowercase_mask = (1 << ('h'-'a')) | (1 << ('j'-'a')) | (1 << ('l'-'a')) | (1 << ('t'-'a')) | (1 << ('w'-'a')) | (1 << ('z'-'a'));
-    for (char c; (c = *fmt) != 0; fmt++)
-    {
-        if (c >= 'A' && c <= 'Z' && ((1 << (c - 'A')) & ignored_uppercase_mask) == 0)
-            return fmt + 1;
-        if (c >= 'a' && c <= 'z' && ((1 << (c - 'a')) & ignored_lowercase_mask) == 0)
-            return fmt + 1;
-    }
-    return fmt;
-}
-
-// Extract the format out of a format string with leading or trailing decorations
-//  fmt = "blah blah"  -> return fmt
-//  fmt = "%.3f"       -> return fmt
-//  fmt = "hello %.3f" -> return fmt + 6
-//  fmt = "%.3f hello" -> return buf written with "%.3f"
-const char* ImParseFormatTrimDecorations(const char* fmt, char* buf, int buf_size)
-{
-    const char* fmt_start = ImParseFormatFindStart(fmt);
-    if (fmt_start[0] != '%')
-        return fmt;
-    const char* fmt_end = ImParseFormatFindEnd(fmt_start);
-    if (fmt_end[0] == 0) // If we only have leading decoration, we don't need to copy the data.
-        return fmt_start;
-    ImStrncpy(buf, fmt_start, ImMin((int)(fmt_end + 1 - fmt_start), buf_size));
-    return buf;
-}
-
-// Parse display precision back from the display format string
-// FIXME: This is still used by some navigation code path to infer a minimum tweak step, but we should aim to rework widgets so it isn't needed.
-int ImParseFormatPrecision(const char* fmt, int default_precision)
-{
-    fmt = ImParseFormatFindStart(fmt);
-    if (fmt[0] != '%')
-        return default_precision;
-    fmt++;
-    while (*fmt >= '0' && *fmt <= '9')
-        fmt++;
-    int precision = INT_MAX;
-    if (*fmt == '.')
-    {
-        fmt = ImAtoi<int>(fmt + 1, &precision);
-        if (precision < 0 || precision > 99)
-            precision = default_precision;
-    }
-    if (*fmt == 'e' || *fmt == 'E') // Maximum precision with scientific notation
-        precision = -1;
-    if ((*fmt == 'g' || *fmt == 'G') && precision == INT_MAX)
-        precision = -1;
-    return (precision == INT_MAX) ? default_precision : precision;
-}
-
-static float GetMinimumStepAtDecimalPrecision(int decimal_precision)
-{
-    static const float min_steps[10] = { 1.0f, 0.1f, 0.01f, 0.001f, 0.0001f, 0.00001f, 0.000001f, 0.0000001f, 0.00000001f, 0.000000001f };
-    if (decimal_precision < 0)
-        return FLT_MIN;
-    return (decimal_precision >= 0 && decimal_precision < 10) ? min_steps[decimal_precision] : ImPow(10.0f, (float)-decimal_precision);
-}
-
-template<typename TYPE, typename SIGNEDTYPE>
-static inline TYPE RoundScalarWithFormat(const char* format, ImGuiDataType data_type, TYPE v)
-{
-    const char* fmt_start = ImParseFormatFindStart(format);
-    if (fmt_start[0] != '%' || fmt_start[1] == '%') // Don't apply if the value is not visible in the format string
-        return v;
-    char v_str[64];
-    ImFormatString(v_str, IM_ARRAYSIZE(v_str), fmt_start, v);
-    const char* p = v_str;
-    while (*p == ' ')
-        p++;
-    if (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double)
-        v = (TYPE)ImAtof(p);
-    else
-        ImAtoi(p, (SIGNEDTYPE*)&v);
-    return v;
-}
-
-template<typename TYPE, typename FLOATTYPE>
-static inline float SliderBehaviorCalcRatioFromValue(ImGuiDataType data_type, TYPE v, TYPE v_min, TYPE v_max, float power, float linear_zero_pos)
-{
-    if (v_min == v_max)
-        return 0.0f;
-
-    const bool is_power = (power != 1.0f) && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double);
-    const TYPE v_clamped = (v_min < v_max) ? ImClamp(v, v_min, v_max) : ImClamp(v, v_max, v_min);
-    if (is_power)
-    {
-        if (v_clamped < 0.0f)
-        {
-            const float f = 1.0f - (float)((v_clamped - v_min) / (ImMin((TYPE)0, v_max) - v_min));
-            return (1.0f - ImPow(f, 1.0f/power)) * linear_zero_pos;
-        }
-        else
-        {
-            const float f = (float)((v_clamped - ImMax((TYPE)0, v_min)) / (v_max - ImMax((TYPE)0, v_min)));
-            return linear_zero_pos + ImPow(f, 1.0f/power) * (1.0f - linear_zero_pos);
-        }
-    }
-
-    // Linear slider
-    return (float)((FLOATTYPE)(v_clamped - v_min) / (FLOATTYPE)(v_max - v_min));
-}
-
-// FIXME: Move some of the code into SliderBehavior(). Current responsability is larger than what the equivalent DragBehaviorT<> does, we also do some rendering, etc.
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
-{
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const bool is_horizontal = (flags & ImGuiSliderFlags_Vertical) == 0;
-    const bool is_decimal = (data_type == ImGuiDataType_Float) || (data_type == ImGuiDataType_Double);
-    const bool is_power = (power != 1.0f) && is_decimal;
-
-    const float grab_padding = 2.0f;
-    const float slider_sz = is_horizontal ? (bb.GetWidth() - grab_padding * 2.0f) : (bb.GetHeight() - grab_padding * 2.0f);
-    float grab_sz = style.GrabMinSize;
-    SIGNEDTYPE v_range = (v_min < v_max ? v_max - v_min : v_min - v_max);
-    if (!is_decimal && v_range >= 0)                                             // v_range < 0 may happen on integer overflows
-        grab_sz = ImMax((float)(slider_sz / (v_range + 1)), style.GrabMinSize);  // For integer sliders: if possible have the grab size represent 1 unit
-    grab_sz = ImMin(grab_sz, slider_sz);
-    const float slider_usable_sz = slider_sz - grab_sz;
-    const float slider_usable_pos_min = (is_horizontal ? bb.Min.x : bb.Min.y) + grab_padding + grab_sz*0.5f;
-    const float slider_usable_pos_max = (is_horizontal ? bb.Max.x : bb.Max.y) - grab_padding - grab_sz*0.5f;
-
-    // For power curve sliders that cross over sign boundary we want the curve to be symmetric around 0.0f
-    float linear_zero_pos;   // 0.0->1.0f
-    if (is_power && v_min * v_max < 0.0f)
-    {
-        // Different sign
-        const FLOATTYPE linear_dist_min_to_0 = ImPow(v_min >= 0 ? (FLOATTYPE)v_min : -(FLOATTYPE)v_min, (FLOATTYPE)1.0f/power);
-        const FLOATTYPE linear_dist_max_to_0 = ImPow(v_max >= 0 ? (FLOATTYPE)v_max : -(FLOATTYPE)v_max, (FLOATTYPE)1.0f/power);
-        linear_zero_pos = (float)(linear_dist_min_to_0 / (linear_dist_min_to_0 + linear_dist_max_to_0));
-    }
-    else
-    {
-        // Same sign
-        linear_zero_pos = v_min < 0.0f ? 1.0f : 0.0f;
-    }
-
-    // Process interacting with the slider
-    bool value_changed = false;
-    if (g.ActiveId == id)
-    {
-        bool set_new_value = false;
-        float clicked_t = 0.0f;
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
-        {
-            if (!g.IO.MouseDown[0])
-            {
-                ClearActiveID();
-            }
-            else
-            {
-                const float mouse_abs_pos = is_horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
-                clicked_t = (slider_usable_sz > 0.0f) ? ImClamp((mouse_abs_pos - slider_usable_pos_min) / slider_usable_sz, 0.0f, 1.0f) : 0.0f;
-                if (!is_horizontal)
-                    clicked_t = 1.0f - clicked_t;
-                set_new_value = true;
-            }
-        }
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-        {
-            const ImVec2 delta2 = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard | ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 0.0f, 0.0f);
-            float delta = is_horizontal ? delta2.x : -delta2.y;
-            if (g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
-            {
-                ClearActiveID();
-            }
-            else if (delta != 0.0f)
-            {
-                clicked_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
-                const int decimal_precision = is_decimal ? ImParseFormatPrecision(format, 3) : 0;
-                if ((decimal_precision > 0) || is_power)
-                {
-                    delta /= 100.0f;    // Gamepad/keyboard tweak speeds in % of slider bounds
-                    if (IsNavInputDown(ImGuiNavInput_TweakSlow))
-                        delta /= 10.0f;
-                }
-                else
-                {
-                    if ((v_range >= -100.0f && v_range <= 100.0f) || IsNavInputDown(ImGuiNavInput_TweakSlow))
-                        delta = ((delta < 0.0f) ? -1.0f : +1.0f) / (float)v_range; // Gamepad/keyboard tweak speeds in integer steps
-                    else
-                        delta /= 100.0f;
-                }
-                if (IsNavInputDown(ImGuiNavInput_TweakFast))
-                    delta *= 10.0f;
-                set_new_value = true;
-                if ((clicked_t >= 1.0f && delta > 0.0f) || (clicked_t <= 0.0f && delta < 0.0f)) // This is to avoid applying the saturation when already past the limits
-                    set_new_value = false;
-                else
-                    clicked_t = ImSaturate(clicked_t + delta);
-            }
-        }
-
-        if (set_new_value)
-        {
-            TYPE v_new;
-            if (is_power)
-            {
-                // Account for power curve scale on both sides of the zero
-                if (clicked_t < linear_zero_pos)
-                {
-                    // Negative: rescale to the negative range before powering
-                    float a = 1.0f - (clicked_t / linear_zero_pos);
-                    a = ImPow(a, power);
-                    v_new = ImLerp(ImMin(v_max, (TYPE)0), v_min, a);
-                }
-                else
-                {
-                    // Positive: rescale to the positive range before powering
-                    float a;
-                    if (ImFabs(linear_zero_pos - 1.0f) > 1.e-6f)
-                        a = (clicked_t - linear_zero_pos) / (1.0f - linear_zero_pos);
-                    else
-                        a = clicked_t;
-                    a = ImPow(a, power);
-                    v_new = ImLerp(ImMax(v_min, (TYPE)0), v_max, a);
-                }
-            }
-            else
-            {
-                // Linear slider
-                if (is_decimal)
-                {
-                    v_new = ImLerp(v_min, v_max, clicked_t);
-                }
-                else
-                {
-                    // For integer values we want the clicking position to match the grab box so we round above
-                    // This code is carefully tuned to work with large values (e.g. high ranges of U64) while preserving this property..
-                    FLOATTYPE v_new_off_f = (v_max - v_min) * clicked_t;
-                    TYPE v_new_off_floor = (TYPE)(v_new_off_f);
-                    TYPE v_new_off_round = (TYPE)(v_new_off_f + (FLOATTYPE)0.5);
-                    if (!is_decimal && v_new_off_floor < v_new_off_round)
-                        v_new = v_min + v_new_off_round;
-                    else
-                        v_new = v_min + v_new_off_floor;
-                }
-            }
-
-            // Round to user desired precision based on format string
-            v_new = RoundScalarWithFormat<TYPE,SIGNEDTYPE>(format, data_type, v_new);
-
-            // Apply result
-            if (*v != v_new)
-            {
-                *v = v_new;
-                value_changed = true;
-            }
-        }
-    }
-
-    // Output grab position so it can be displayed by the caller
-    float grab_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
-    if (!is_horizontal)
-        grab_t = 1.0f - grab_t;
-    const float grab_pos = ImLerp(slider_usable_pos_min, slider_usable_pos_max, grab_t);
-    if (is_horizontal)
-        *out_grab_bb = ImRect(grab_pos - grab_sz*0.5f, bb.Min.y + grab_padding, grab_pos + grab_sz*0.5f, bb.Max.y - grab_padding);
-    else
-        *out_grab_bb = ImRect(bb.Min.x + grab_padding, grab_pos - grab_sz*0.5f, bb.Max.x - grab_padding, grab_pos + grab_sz*0.5f);
-
-    return value_changed;
-}
-
-// For 32-bits and larger types, slider bounds are limited to half the natural type range.
-// So e.g. an integer Slider between INT_MAX-10 and INT_MAX will fail, but an integer Slider between INT_MAX/2-10 and INT_MAX/2 will be ok.
-// It would be possible to lift that limitation with some work but it doesn't seem to be worth it for sliders.
-bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
-{
-    switch (data_type)
-    {
-    case ImGuiDataType_S32:
-        IM_ASSERT(*(const ImS32*)v_min >= IM_S32_MIN/2 && *(const ImS32*)v_max <= IM_S32_MAX/2);
-        return SliderBehaviorT<ImS32, ImS32, float >(bb, id, data_type, (ImS32*)v,  *(const ImS32*)v_min,  *(const ImS32*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_U32:
-        IM_ASSERT(*(const ImU32*)v_min <= IM_U32_MAX/2);
-        return SliderBehaviorT<ImU32, ImS32, float >(bb, id, data_type, (ImU32*)v,  *(const ImU32*)v_min,  *(const ImU32*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_S64:
-        IM_ASSERT(*(const ImS64*)v_min >= IM_S64_MIN/2 && *(const ImS64*)v_max <= IM_S64_MAX/2);
-        return SliderBehaviorT<ImS64, ImS64, double>(bb, id, data_type, (ImS64*)v,  *(const ImS64*)v_min,  *(const ImS64*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_U64:
-        IM_ASSERT(*(const ImU64*)v_min <= IM_U64_MAX/2);
-        return SliderBehaviorT<ImU64, ImS64, double>(bb, id, data_type, (ImU64*)v,  *(const ImU64*)v_min,  *(const ImU64*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_Float:
-        IM_ASSERT(*(const float*)v_min >= -FLT_MAX/2.0f && *(const float*)v_max <= FLT_MAX/2.0f);
-        return SliderBehaviorT<float, float, float >(bb, id, data_type, (float*)v,  *(const float*)v_min,  *(const float*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_Double:
-        IM_ASSERT(*(const double*)v_min >= -DBL_MAX/2.0f && *(const double*)v_max <= DBL_MAX/2.0f);
-        return SliderBehaviorT<double,double,double>(bb, id, data_type, (double*)v, *(const double*)v_min, *(const double*)v_max, format, power, flags, out_grab_bb);
-    case ImGuiDataType_COUNT: break;
-    }
-    IM_ASSERT(0);
-    return false;
-}
-
-// FIXME-LEGACY: Prior to 1.61 our DragInt() function internally used floats and because of this the compile-time default value for format was "%.0f".
-// Even though we changed the compile-time default, we expect users to have carried %f around, which would break the display of DragInt() calls.
-// To honor backward compatibility we are rewriting the format string, unless IMGUI_DISABLE_OBSOLETE_FUNCTIONS is enabled. What could possibly go wrong?!
-static const char* PatchFormatStringFloatToInt(const char* fmt)
-{
-    if (fmt[0] == '%' && fmt[1] == '.' && fmt[2] == '0' && fmt[3] == 'f' && fmt[4] == 0) // Fast legacy path for "%.0f" which is expected to be the most common case.
-        return "%d";
-    const char* fmt_start = ImParseFormatFindStart(fmt);    // Find % (if any, and ignore %%)
-    const char* fmt_end = ImParseFormatFindEnd(fmt_start);  // Find end of format specifier, which itself is an exercise of confidence/recklessness (because snprintf is dependent on libc or user).
-    if (fmt_end > fmt_start && fmt_end[-1] == 'f')
-    {
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-        if (fmt_start == fmt && fmt_end[0] == 0)
-            return "%d";
-        ImGuiContext& g = *GImGui;
-        ImFormatString(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), "%.*s%%d%s", (int)(fmt_start - fmt), fmt, fmt_end); // Honor leading and trailing decorations, but lose alignment/precision.
-        return g.TempBuffer;
-#else
-        IM_ASSERT(0 && "DragInt(): Invalid format string!"); // Old versions used a default parameter of "%.0f", please replace with e.g. "%d"
-#endif
-    }
-    return fmt;
-}
-
-bool ImGui::SliderScalar(const char* label, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
-    if (!ItemAdd(total_bb, id, &frame_bb))
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        return false;
-    }
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    // Tabbing or CTRL-clicking on Slider turns it into an input box
-    bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, id);
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if (tab_focus_requested || (hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        if (tab_focus_requested || g.IO.KeyCtrl || g.NavInputId == id)
-        {
-            start_text_input = true;
-            g.ScalarAsInputTextId = 0;
-        }
-    }
-    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
-        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
-
-    ItemSize(total_bb, style.FramePadding.y);
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
-
-    // Slider behavior
-    ImRect grab_bb;
-    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_None, &grab_bb);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Render grab
-    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.5f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalar(label, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
-}
-
-bool ImGui::VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(frame_bb, id))
-        return false;
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if ((hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || g.NavInputId == id)
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right);
-    }
-
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
-
-    // Slider behavior
-    ImRect grab_bb;
-    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_Vertical, &grab_bb);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Render grab
-    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    // For the vertical slider we allow centered text to overlap the frame padding
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.0f));
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::SliderAngle(const char* label, float* v_rad, float v_degrees_min, float v_degrees_max)
-{
-    float v_deg = (*v_rad) * 360.0f / (2*IM_PI);
-    bool value_changed = SliderFloat(label, &v_deg, v_degrees_min, v_degrees_max, "%.0f deg", 1.0f);
-    *v_rad = v_deg * (2*IM_PI) / 360.0f;
-    return value_changed;
-}
-
-bool ImGui::SliderInt(const char* label, int* v, int v_min, int v_max, const char* format)
-{
-    return SliderScalar(label, ImGuiDataType_S32, v, &v_min, &v_max, format);
-}
-
-bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* format, float power)
-{
-    return VSliderScalar(label, size, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
-}
-
-bool ImGui::VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format)
-{
-    return VSliderScalar(label, size, ImGuiDataType_S32, v, &v_min, &v_max, format);
-}
-
-// Add multiple sliders on 1 line for compact edition of multiple components
-bool ImGui::SliderScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= SliderScalar("##v", data_type, v, v_min, v_max, format, power);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 2, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 3, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 4, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 2, &v_min, &v_max, format);
-}
-
-bool ImGui::SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 3, &v_min, &v_max, format);
-}
-
-bool ImGui::SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 4, &v_min, &v_max, format);
-}
-
-// This is called by DragBehavior() when the widget is active (held by mouse or being manipulated with Nav controls)
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power)
-{
-    ImGuiContext& g = *GImGui;
-
-    // Default tweak speed
-    bool has_min_max = (v_min != v_max) && (v_max - v_max < FLT_MAX);
-    if (v_speed == 0.0f && has_min_max)
-        v_speed = (float)((v_max - v_min) * g.DragSpeedDefaultRatio);
-
-    // Inputs accumulates into g.DragCurrentAccum, which is flushed into the current value as soon as it makes a difference with our precision settings
-    float adjust_delta = 0.0f;
-    if (g.ActiveIdSource == ImGuiInputSource_Mouse && IsMousePosValid() && g.IO.MouseDragMaxDistanceSqr[0] > 1.0f*1.0f)
-    {
-        adjust_delta = g.IO.MouseDelta.x;
-        if (g.IO.KeyAlt)
-            adjust_delta *= 1.0f/100.0f;
-        if (g.IO.KeyShift)
-            adjust_delta *= 10.0f;
-    }
-    else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-    {
-        int decimal_precision = (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImParseFormatPrecision(format, 3) : 0;
-        adjust_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard|ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 1.0f/10.0f, 10.0f).x;
-        v_speed = ImMax(v_speed, GetMinimumStepAtDecimalPrecision(decimal_precision));
-    }
-    adjust_delta *= v_speed;
-
-    // Clear current value on activation
-    // Avoid altering values and clamping when we are _already_ past the limits and heading in the same direction, so e.g. if range is 0..255, current value is 300 and we are pushing to the right side, keep the 300.
-    bool is_just_activated = g.ActiveIdIsJustActivated;
-    bool is_already_past_limits_and_pushing_outward = has_min_max && ((*v >= v_max && adjust_delta > 0.0f) || (*v <= v_min && adjust_delta < 0.0f));
-    if (is_just_activated || is_already_past_limits_and_pushing_outward)
-    {
-        g.DragCurrentAccum = 0.0f;
-        g.DragCurrentAccumDirty = false;
-    }
-    else if (adjust_delta != 0.0f)
-    {
-        g.DragCurrentAccum += adjust_delta;
-        g.DragCurrentAccumDirty = true;
-    }
-
-    if (!g.DragCurrentAccumDirty)
-        return false;
-
-    TYPE v_cur = *v;
-    FLOATTYPE v_old_ref_for_accum_remainder = (FLOATTYPE)0.0f;
-
-    const bool is_power = (power != 1.0f && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) && has_min_max);
-    if (is_power)
-    {
-        // Offset + round to user desired precision, with a curve on the v_min..v_max range to get more precision on one side of the range
-        FLOATTYPE v_old_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
-        FLOATTYPE v_new_norm_curved = v_old_norm_curved + (g.DragCurrentAccum / (v_max - v_min));
-        v_cur = v_min + (TYPE)ImPow(ImSaturate((float)v_new_norm_curved), power) * (v_max - v_min);
-        v_old_ref_for_accum_remainder = v_old_norm_curved;
-    }
-    else
-    {
-        v_cur += (TYPE)g.DragCurrentAccum;
-    }
-
-    // Round to user desired precision based on format string
-    v_cur = RoundScalarWithFormat<TYPE, SIGNEDTYPE>(format, data_type, v_cur);
-
-    // Preserve remainder after rounding has been applied. This also allow slow tweaking of values.
-    g.DragCurrentAccumDirty = false;
-    if (is_power)
-    {
-        FLOATTYPE v_cur_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
-        g.DragCurrentAccum -= (float)(v_cur_norm_curved - v_old_ref_for_accum_remainder);
-    }
-    else
-    {
-        g.DragCurrentAccum -= (float)((SIGNEDTYPE)v_cur - (SIGNEDTYPE)*v);
-    }
-
-    // Lose zero sign for float/double
-    if (v_cur == (TYPE)-0)
-        v_cur = (TYPE)0;
-
-    // Clamp values (handle overflow/wrap-around)
-    if (*v != v_cur && has_min_max)
-    {
-        if (v_cur < v_min || (v_cur > *v && adjust_delta < 0.0f))
-            v_cur = v_min;
-        if (v_cur > v_max || (v_cur < *v && adjust_delta > 0.0f))
-            v_cur = v_max;
-    }
-
-    // Apply result
-    if (*v == v_cur)
-        return false;
-    *v = v_cur;
-    return true;
-}
-
-bool ImGui::DragBehavior(ImGuiID id, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.ActiveId == id)
-    {
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse && !g.IO.MouseDown[0])
-            ClearActiveID();
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav && g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
-            ClearActiveID();
-    }
-    if (g.ActiveId != id)
-        return false;
-
-    switch (data_type)
-    {
-    case ImGuiDataType_S32:    return DragBehaviorT<ImS32, ImS32, float >(data_type, (ImS32*)v,  v_speed, v_min ? *(const ImS32* )v_min : IM_S32_MIN, v_max ? *(const ImS32* )v_max : IM_S32_MAX, format, power);
-    case ImGuiDataType_U32:    return DragBehaviorT<ImU32, ImS32, float >(data_type, (ImU32*)v,  v_speed, v_min ? *(const ImU32* )v_min : IM_U32_MIN, v_max ? *(const ImU32* )v_max : IM_U32_MAX, format, power);
-    case ImGuiDataType_S64:    return DragBehaviorT<ImS64, ImS64, double>(data_type, (ImS64*)v,  v_speed, v_min ? *(const ImS64* )v_min : IM_S64_MIN, v_max ? *(const ImS64* )v_max : IM_S64_MAX, format, power);
-    case ImGuiDataType_U64:    return DragBehaviorT<ImU64, ImS64, double>(data_type, (ImU64*)v,  v_speed, v_min ? *(const ImU64* )v_min : IM_U64_MIN, v_max ? *(const ImU64* )v_max : IM_U64_MAX, format, power);
-    case ImGuiDataType_Float:  return DragBehaviorT<float, float, float >(data_type, (float*)v,  v_speed, v_min ? *(const float* )v_min : -FLT_MAX,   v_max ? *(const float* )v_max : FLT_MAX,    format, power);
-    case ImGuiDataType_Double: return DragBehaviorT<double,double,double>(data_type, (double*)v, v_speed, v_min ? *(const double*)v_min : -DBL_MAX,   v_max ? *(const double*)v_max : DBL_MAX,    format, power);
-    case ImGuiDataType_COUNT:  break;
-    }
-    IM_ASSERT(0);
-    return false;
-}
-
-bool ImGui::DragScalar(const char* label, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    if (power != 1.0f)
-        IM_ASSERT(v_min != NULL && v_max != NULL); // When using a power curve the drag needs to have known bounds
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
-    if (!ItemAdd(total_bb, id, &frame_bb))
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        return false;
-    }
-    const bool hovered = ItemHoverable(frame_bb, id);
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    // Tabbing or CTRL-clicking on Drag turns it into an input box
-    bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, id);
-    if (tab_focus_requested || (hovered && (g.IO.MouseClicked[0] || g.IO.MouseDoubleClicked[0])) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        if (tab_focus_requested || g.IO.KeyCtrl || g.IO.MouseDoubleClicked[0] || g.NavInputId == id)
-        {
-            start_text_input = true;
-            g.ScalarAsInputTextId = 0;
-        }
-    }
-    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
-        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
-
-    // Actual drag behavior
-    ItemSize(total_bb, style.FramePadding.y);
-    const bool value_changed = DragBehavior(id, data_type, v, v_speed, v_min, v_max, format, power);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, style.FrameRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f, 0.5f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::DragScalarN(const char* label, ImGuiDataType data_type, void* v, int components, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= DragScalar("##v", data_type, v, v_speed, v_min, v_max, format, power);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::DragFloat(const char* label, float* v, float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalar(label, ImGuiDataType_Float, v, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat2(const char* label, float v[2], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 2, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat3(const char* label, float v[3], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 3, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat4(const char* label, float v[4], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 4, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloatRange2(const char* label, float* v_current_min, float* v_current_max, float v_speed, float v_min, float v_max, const char* format, const char* format_max, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    PushID(label);
-    BeginGroup();
-    PushMultiItemsWidths(2);
-
-    bool value_changed = DragFloat("##min", v_current_min, v_speed, (v_min >= v_max) ? -FLT_MAX : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format, power);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-    value_changed |= DragFloat("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? FLT_MAX : v_max, format_max ? format_max : format, power);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    PopID();
-    return value_changed;
-}
-
-// NB: v_speed is float to allow adjusting the drag speed with more precision
-bool ImGui::DragInt(const char* label, int* v, float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalar(label, ImGuiDataType_S32, v, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt2(const char* label, int v[2], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 2, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt3(const char* label, int v[3], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 3, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt4(const char* label, int v[4], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 4, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragIntRange2(const char* label, int* v_current_min, int* v_current_max, float v_speed, int v_min, int v_max, const char* format, const char* format_max)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    PushID(label);
-    BeginGroup();
-    PushMultiItemsWidths(2);
-
-    bool value_changed = DragInt("##min", v_current_min, v_speed, (v_min >= v_max) ? INT_MIN : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-    value_changed |= DragInt("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? INT_MAX : v_max, format_max ? format_max : format);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    PopID();
-
-    return value_changed;
-}
-
-void ImGui::PlotEx(ImGuiPlotType plot_type, const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    if (graph_size.x == 0.0f)
-        graph_size.x = CalcItemWidth();
-    if (graph_size.y == 0.0f)
-        graph_size.y = label_size.y + (style.FramePadding.y * 2);
-
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(graph_size.x, graph_size.y));
-    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0));
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, 0, &frame_bb))
-        return;
-    const bool hovered = ItemHoverable(inner_bb, 0);
-
-    // Determine scale from values if not specified
-    if (scale_min == FLT_MAX || scale_max == FLT_MAX)
-    {
-        float v_min = FLT_MAX;
-        float v_max = -FLT_MAX;
-        for (int i = 0; i < values_count; i++)
-        {
-            const float v = values_getter(data, i);
-            v_min = ImMin(v_min, v);
-            v_max = ImMax(v_max, v);
-        }
-        if (scale_min == FLT_MAX)
-            scale_min = v_min;
-        if (scale_max == FLT_MAX)
-            scale_max = v_max;
-    }
-
-    RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-
-    if (values_count > 0)
-    {
-        int res_w = ImMin((int)graph_size.x, values_count) + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
-        int item_count = values_count + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
-
-        // Tooltip on hover
-        int v_hovered = -1;
-        if (hovered)
-        {
-            const float t = ImClamp((g.IO.MousePos.x - inner_bb.Min.x) / (inner_bb.Max.x - inner_bb.Min.x), 0.0f, 0.9999f);
-            const int v_idx = (int)(t * item_count);
-            IM_ASSERT(v_idx >= 0 && v_idx < values_count);
-
-            const float v0 = values_getter(data, (v_idx + values_offset) % values_count);
-            const float v1 = values_getter(data, (v_idx + 1 + values_offset) % values_count);
-            if (plot_type == ImGuiPlotType_Lines)
-                SetTooltip("%d: %8.4g\n%d: %8.4g", v_idx, v0, v_idx+1, v1);
-            else if (plot_type == ImGuiPlotType_Histogram)
-                SetTooltip("%d: %8.4g", v_idx, v0);
-            v_hovered = v_idx;
-        }
-
-        const float t_step = 1.0f / (float)res_w;
-        const float inv_scale = (scale_min == scale_max) ? 0.0f : (1.0f / (scale_max - scale_min));
-
-        float v0 = values_getter(data, (0 + values_offset) % values_count);
-        float t0 = 0.0f;
-        ImVec2 tp0 = ImVec2( t0, 1.0f - ImSaturate((v0 - scale_min) * inv_scale) );                       // Point in the normalized space of our target rectangle
-        float histogram_zero_line_t = (scale_min * scale_max < 0.0f) ? (-scale_min * inv_scale) : (scale_min < 0.0f ? 0.0f : 1.0f);   // Where does the zero line stands
-
-        const ImU32 col_base = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLines : ImGuiCol_PlotHistogram);
-        const ImU32 col_hovered = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLinesHovered : ImGuiCol_PlotHistogramHovered);
-
-        for (int n = 0; n < res_w; n++)
-        {
-            const float t1 = t0 + t_step;
-            const int v1_idx = (int)(t0 * item_count + 0.5f);
-            IM_ASSERT(v1_idx >= 0 && v1_idx < values_count);
-            const float v1 = values_getter(data, (v1_idx + values_offset + 1) % values_count);
-            const ImVec2 tp1 = ImVec2( t1, 1.0f - ImSaturate((v1 - scale_min) * inv_scale) );
-
-            // NB: Draw calls are merged together by the DrawList system. Still, we should render our batch are lower level to save a bit of CPU.
-            ImVec2 pos0 = ImLerp(inner_bb.Min, inner_bb.Max, tp0);
-            ImVec2 pos1 = ImLerp(inner_bb.Min, inner_bb.Max, (plot_type == ImGuiPlotType_Lines) ? tp1 : ImVec2(tp1.x, histogram_zero_line_t));
-            if (plot_type == ImGuiPlotType_Lines)
-            {
-                window->DrawList->AddLine(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
-            }
-            else if (plot_type == ImGuiPlotType_Histogram)
-            {
-                if (pos1.x >= pos0.x + 2.0f)
-                    pos1.x -= 1.0f;
-                window->DrawList->AddRectFilled(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
-            }
-
-            t0 = t1;
-            tp0 = tp1;
-        }
-    }
-
-    // Text overlay
-    if (overlay_text)
-        RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, overlay_text, NULL, NULL, ImVec2(0.5f,0.0f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
-}
-
-struct ImGuiPlotArrayGetterData
-{
-    const float* Values;
-    int Stride;
-
-    ImGuiPlotArrayGetterData(const float* values, int stride) { Values = values; Stride = stride; }
-};
-
-static float Plot_ArrayGetter(void* data, int idx)
-{
-    ImGuiPlotArrayGetterData* plot_data = (ImGuiPlotArrayGetterData*)data;
-    const float v = *(const float*)(const void*)((const unsigned char*)plot_data->Values + (size_t)idx * plot_data->Stride);
-    return v;
-}
-
-void ImGui::PlotLines(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
-{
-    ImGuiPlotArrayGetterData data(values, stride);
-    PlotEx(ImGuiPlotType_Lines, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotLines(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    PlotEx(ImGuiPlotType_Lines, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotHistogram(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
-{
-    ImGuiPlotArrayGetterData data(values, stride);
-    PlotEx(ImGuiPlotType_Histogram, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotHistogram(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    PlotEx(ImGuiPlotType_Histogram, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-// size_arg (for each axis) < 0.0f: align to end, 0.0f: auto, > 0.0f: specified size
-void ImGui::ProgressBar(float fraction, const ImVec2& size_arg, const char* overlay)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    ImVec2 pos = window->DC.CursorPos;
-    ImRect bb(pos, pos + CalcItemSize(size_arg, CalcItemWidth(), g.FontSize + style.FramePadding.y*2.0f));
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    // Render
-    fraction = ImSaturate(fraction);
-    RenderFrame(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-    bb.Expand(ImVec2(-style.FrameBorderSize, -style.FrameBorderSize));
-    const ImVec2 fill_br = ImVec2(ImLerp(bb.Min.x, bb.Max.x, fraction), bb.Max.y);
-    RenderRectFilledRangeH(window->DrawList, bb, GetColorU32(ImGuiCol_PlotHistogram), 0.0f, fraction, style.FrameRounding);
-
-    // Default displaying the fraction as percentage string, but user can override it
-    char overlay_buf[32];
-    if (!overlay)
-    {
-        ImFormatString(overlay_buf, IM_ARRAYSIZE(overlay_buf), "%.0f%%", fraction*100+0.01f);
-        overlay = overlay_buf;
-    }
-
-    ImVec2 overlay_size = CalcTextSize(overlay, NULL);
-    if (overlay_size.x > 0.0f)
-        RenderTextClipped(ImVec2(ImClamp(fill_br.x + style.ItemSpacing.x, bb.Min.x, bb.Max.x - overlay_size.x - style.ItemInnerSpacing.x), bb.Min.y), bb.Max, overlay, NULL, &overlay_size, ImVec2(0.0f,0.5f), &bb);
-}
-
-bool ImGui::Checkbox(const char* label, bool* v)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2, label_size.y + style.FramePadding.y*2)); // We want a square shape to we use Y twice
-    ItemSize(check_bb, style.FramePadding.y);
-
-    ImRect total_bb = check_bb;
-    if (label_size.x > 0)
-        SameLine(0, style.ItemInnerSpacing.x);
-    const ImRect text_bb(window->DC.CursorPos + ImVec2(0,style.FramePadding.y), window->DC.CursorPos + ImVec2(0,style.FramePadding.y) + label_size);
-    if (label_size.x > 0)
-    {
-        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
-        total_bb = ImRect(ImMin(check_bb.Min, text_bb.Min), ImMax(check_bb.Max, text_bb.Max));
-    }
-
-    if (!ItemAdd(total_bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
-    if (pressed)
-    {
-        *v = !(*v);
-        MarkItemEdited(id);
-    }
-
-    RenderNavHighlight(total_bb, id);
-    RenderFrame(check_bb.Min, check_bb.Max, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), true, style.FrameRounding);
-    if (*v)
-    {
-        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
-        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
-        RenderCheckMark(check_bb.Min + ImVec2(pad,pad), GetColorU32(ImGuiCol_CheckMark), check_bb.GetWidth() - pad*2.0f);
-    }
-
-    if (g.LogEnabled)
-        LogRenderedText(&text_bb.Min, *v ? "[x]" : "[ ]");
-    if (label_size.x > 0.0f)
-        RenderText(text_bb.Min, label);
-
-    return pressed;
-}
-
-bool ImGui::CheckboxFlags(const char* label, unsigned int* flags, unsigned int flags_value)
-{
-    bool v = ((*flags & flags_value) == flags_value);
-    bool pressed = Checkbox(label, &v);
-    if (pressed)
-    {
-        if (v)
-            *flags |= flags_value;
-        else
-            *flags &= ~flags_value;
-    }
-
-    return pressed;
-}
-
-bool ImGui::RadioButton(const char* label, bool active)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2-1, label_size.y + style.FramePadding.y*2-1));
-    ItemSize(check_bb, style.FramePadding.y);
-
-    ImRect total_bb = check_bb;
-    if (label_size.x > 0)
-        SameLine(0, style.ItemInnerSpacing.x);
-    const ImRect text_bb(window->DC.CursorPos + ImVec2(0, style.FramePadding.y), window->DC.CursorPos + ImVec2(0, style.FramePadding.y) + label_size);
-    if (label_size.x > 0)
-    {
-        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
-        total_bb.Add(text_bb);
-    }
-
-    if (!ItemAdd(total_bb, id))
-        return false;
-
-    ImVec2 center = check_bb.GetCenter();
-    center.x = (float)(int)center.x + 0.5f;
-    center.y = (float)(int)center.y + 0.5f;
-    const float radius = check_bb.GetHeight() * 0.5f;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
-    if (pressed)
-        MarkItemEdited(id);
-
-    RenderNavHighlight(total_bb, id);
-    window->DrawList->AddCircleFilled(center, radius, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), 16);
-    if (active)
-    {
-        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
-        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
-        window->DrawList->AddCircleFilled(center, radius-pad, GetColorU32(ImGuiCol_CheckMark), 16);
-    }
-
-    if (style.FrameBorderSize > 0.0f)
-    {
-        window->DrawList->AddCircle(center+ImVec2(1,1), radius, GetColorU32(ImGuiCol_BorderShadow), 16, style.FrameBorderSize);
-        window->DrawList->AddCircle(center, radius, GetColorU32(ImGuiCol_Border), 16, style.FrameBorderSize);
-    }
-
-    if (g.LogEnabled)
-        LogRenderedText(&text_bb.Min, active ? "(x)" : "( )");
-    if (label_size.x > 0.0f)
-        RenderText(text_bb.Min, label);
-
-    return pressed;
-}
-
-bool ImGui::RadioButton(const char* label, int* v, int v_button)
-{
-    const bool pressed = RadioButton(label, *v == v_button);
-    if (pressed)
-        *v = v_button;
-    return pressed;
-}
-
-static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end)
-{
-    int line_count = 0;
-    const char* s = text_begin;
-    while (char c = *s++) // We are only matching for \n so we can ignore UTF-8 decoding
-        if (c == '\n')
-            line_count++;
-    s--;
-    if (s[0] != '\n' && s[0] != '\r')
-        line_count++;
-    *out_text_end = s;
-    return line_count;
-}
-
-static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining, ImVec2* out_offset, bool stop_on_new_line)
-{
-    ImFont* font = GImGui->Font;
-    const float line_height = GImGui->FontSize;
-    const float scale = line_height / font->FontSize;
-
-    ImVec2 text_size = ImVec2(0,0);
-    float line_width = 0.0f;
-
-    const ImWchar* s = text_begin;
-    while (s < text_end)
-    {
-        unsigned int c = (unsigned int)(*s++);
-        if (c == '\n')
-        {
-            text_size.x = ImMax(text_size.x, line_width);
-            text_size.y += line_height;
-            line_width = 0.0f;
-            if (stop_on_new_line)
-                break;
-            continue;
-        }
-        if (c == '\r')
-            continue;
-
-        const float char_width = font->GetCharAdvance((unsigned short)c) * scale;
-        line_width += char_width;
-    }
-
-    if (text_size.x < line_width)
-        text_size.x = line_width;
-
-    if (out_offset)
-        *out_offset = ImVec2(line_width, text_size.y + line_height);  // offset allow for the possibility of sitting after a trailing \n
-
-    if (line_width > 0 || text_size.y == 0.0f)                        // whereas size.y will ignore the trailing \n
-        text_size.y += line_height;
-
-    if (remaining)
-        *remaining = s;
-
-    return text_size;
-}
-
-// Wrapper for stb_textedit.h to edit text (our wrapper is for: statically sized buffer, single-line, wchar characters. InputText converts between UTF-8 and wchar)
-namespace ImGuiStb
-{
-
-static int     STB_TEXTEDIT_STRINGLEN(const STB_TEXTEDIT_STRING* obj)                             { return obj->CurLenW; }
-static ImWchar STB_TEXTEDIT_GETCHAR(const STB_TEXTEDIT_STRING* obj, int idx)                      { return obj->TextW[idx]; }
-static float   STB_TEXTEDIT_GETWIDTH(STB_TEXTEDIT_STRING* obj, int line_start_idx, int char_idx)  { ImWchar c = obj->TextW[line_start_idx+char_idx]; if (c == '\n') return STB_TEXTEDIT_GETWIDTH_NEWLINE; return GImGui->Font->GetCharAdvance(c) * (GImGui->FontSize / GImGui->Font->FontSize); }
-static int     STB_TEXTEDIT_KEYTOTEXT(int key)                                                    { return key >= 0x10000 ? 0 : key; }
-static ImWchar STB_TEXTEDIT_NEWLINE = '\n';
-static void    STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, STB_TEXTEDIT_STRING* obj, int line_start_idx)
-{
-    const ImWchar* text = obj->TextW.Data;
-    const ImWchar* text_remaining = NULL;
-    const ImVec2 size = InputTextCalcTextSizeW(text + line_start_idx, text + obj->CurLenW, &text_remaining, NULL, true);
-    r->x0 = 0.0f;
-    r->x1 = size.x;
-    r->baseline_y_delta = size.y;
-    r->ymin = 0.0f;
-    r->ymax = size.y;
-    r->num_chars = (int)(text_remaining - (text + line_start_idx));
-}
-
-static bool is_separator(unsigned int c)                                        { return ImCharIsBlankW(c) || c==',' || c==';' || c=='(' || c==')' || c=='{' || c=='}' || c=='[' || c==']' || c=='|'; }
-static int  is_word_boundary_from_right(STB_TEXTEDIT_STRING* obj, int idx)      { return idx > 0 ? (is_separator( obj->TextW[idx-1] ) && !is_separator( obj->TextW[idx] ) ) : 1; }
-static int  STB_TEXTEDIT_MOVEWORDLEFT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)   { idx--; while (idx >= 0 && !is_word_boundary_from_right(obj, idx)) idx--; return idx < 0 ? 0 : idx; }
-#ifdef __APPLE__    // FIXME: Move setting to IO structure
-static int  is_word_boundary_from_left(STB_TEXTEDIT_STRING* obj, int idx)       { return idx > 0 ? (!is_separator( obj->TextW[idx-1] ) && is_separator( obj->TextW[idx] ) ) : 1; }
-static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_left(obj, idx)) idx++; return idx > len ? len : idx; }
-#else
-static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_right(obj, idx)) idx++; return idx > len ? len : idx; }
-#endif
-#define STB_TEXTEDIT_MOVEWORDLEFT   STB_TEXTEDIT_MOVEWORDLEFT_IMPL    // They need to be #define for stb_textedit.h
-#define STB_TEXTEDIT_MOVEWORDRIGHT  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL
-
-static void STB_TEXTEDIT_DELETECHARS(STB_TEXTEDIT_STRING* obj, int pos, int n)
-{
-    ImWchar* dst = obj->TextW.Data + pos;
-
-    // We maintain our buffer length in both UTF-8 and wchar formats
-    obj->CurLenA -= ImTextCountUtf8BytesFromStr(dst, dst + n);
-    obj->CurLenW -= n;
-
-    // Offset remaining text
-    const ImWchar* src = obj->TextW.Data + pos + n;
-    while (ImWchar c = *src++)
-        *dst++ = c;
-    *dst = '\0';
-}
-
-static bool STB_TEXTEDIT_INSERTCHARS(STB_TEXTEDIT_STRING* obj, int pos, const ImWchar* new_text, int new_text_len)
-{
-    const bool is_resizable = (obj->UserFlags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int text_len = obj->CurLenW;
-    IM_ASSERT(pos <= text_len);
-
-    const int new_text_len_utf8 = ImTextCountUtf8BytesFromStr(new_text, new_text + new_text_len);
-    if (!is_resizable && (new_text_len_utf8 + obj->CurLenA + 1 > obj->BufCapacityA))
-        return false;
-
-    // Grow internal buffer if needed
-    if (new_text_len + text_len + 1 > obj->TextW.Size)
-    {
-        if (!is_resizable)
-            return false;
-        IM_ASSERT(text_len < obj->TextW.Size);
-        obj->TextW.resize(text_len + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1);
-    }
-
-    ImWchar* text = obj->TextW.Data;
-    if (pos != text_len)
-        memmove(text + pos + new_text_len, text + pos, (size_t)(text_len - pos) * sizeof(ImWchar));
-    memcpy(text + pos, new_text, (size_t)new_text_len * sizeof(ImWchar));
-
-    obj->CurLenW += new_text_len;
-    obj->CurLenA += new_text_len_utf8;
-    obj->TextW[obj->CurLenW] = '\0';
-
-    return true;
-}
-
-// We don't use an enum so we can build even with conflicting symbols (if another user of stb_textedit.h leak their STB_TEXTEDIT_K_* symbols)
-#define STB_TEXTEDIT_K_LEFT         0x10000 // keyboard input to move cursor left
-#define STB_TEXTEDIT_K_RIGHT        0x10001 // keyboard input to move cursor right
-#define STB_TEXTEDIT_K_UP           0x10002 // keyboard input to move cursor up
-#define STB_TEXTEDIT_K_DOWN         0x10003 // keyboard input to move cursor down
-#define STB_TEXTEDIT_K_LINESTART    0x10004 // keyboard input to move cursor to start of line
-#define STB_TEXTEDIT_K_LINEEND      0x10005 // keyboard input to move cursor to end of line
-#define STB_TEXTEDIT_K_TEXTSTART    0x10006 // keyboard input to move cursor to start of text
-#define STB_TEXTEDIT_K_TEXTEND      0x10007 // keyboard input to move cursor to end of text
-#define STB_TEXTEDIT_K_DELETE       0x10008 // keyboard input to delete selection or character under cursor
-#define STB_TEXTEDIT_K_BACKSPACE    0x10009 // keyboard input to delete selection or character left of cursor
-#define STB_TEXTEDIT_K_UNDO         0x1000A // keyboard input to perform undo
-#define STB_TEXTEDIT_K_REDO         0x1000B // keyboard input to perform redo
-#define STB_TEXTEDIT_K_WORDLEFT     0x1000C // keyboard input to move cursor left one word
-#define STB_TEXTEDIT_K_WORDRIGHT    0x1000D // keyboard input to move cursor right one word
-#define STB_TEXTEDIT_K_SHIFT        0x20000
-
-#define STB_TEXTEDIT_IMPLEMENTATION
-#include "stb_textedit.h"
-
-}
-
-void ImGuiInputTextState::OnKeyPressed(int key)
-{
-    stb_textedit_key(this, &StbState, key);
-    CursorFollow = true;
-    CursorAnimReset();
-}
-
-ImGuiInputTextCallbackData::ImGuiInputTextCallbackData()
-{
-    memset(this, 0, sizeof(*this));
-}
-
-// Public API to manipulate UTF-8 text
-// We expose UTF-8 to the user (unlike the STB_TEXTEDIT_* functions which are manipulating wchar)
-// FIXME: The existence of this rarely exercised code path is a bit of a nuisance.
-void ImGuiInputTextCallbackData::DeleteChars(int pos, int bytes_count)
-{
-    IM_ASSERT(pos + bytes_count <= BufTextLen);
-    char* dst = Buf + pos;
-    const char* src = Buf + pos + bytes_count;
-    while (char c = *src++)
-        *dst++ = c;
-    *dst = '\0';
-
-    if (CursorPos + bytes_count >= pos)
-        CursorPos -= bytes_count;
-    else if (CursorPos >= pos)
-        CursorPos = pos;
-    SelectionStart = SelectionEnd = CursorPos;
-    BufDirty = true;
-    BufTextLen -= bytes_count;
-}
-
-void ImGuiInputTextCallbackData::InsertChars(int pos, const char* new_text, const char* new_text_end)
-{
-    const bool is_resizable = (Flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int new_text_len = new_text_end ? (int)(new_text_end - new_text) : (int)strlen(new_text);
-    if (new_text_len + BufTextLen >= BufSize)
-    {
-        if (!is_resizable)
-            return;
-
-        // Contrary to STB_TEXTEDIT_INSERTCHARS() this is working in the UTF8 buffer, hence the midly similar code (until we remove the U16 buffer alltogether!)
-        ImGuiContext& g = *GImGui;
-        ImGuiInputTextState* edit_state = &g.InputTextState;
-        IM_ASSERT(edit_state->ID != 0 && g.ActiveId == edit_state->ID);
-        IM_ASSERT(Buf == edit_state->TempBuffer.Data);
-        int new_buf_size = BufTextLen + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1;
-        edit_state->TempBuffer.reserve(new_buf_size + 1);
-        Buf = edit_state->TempBuffer.Data;
-        BufSize = edit_state->BufCapacityA = new_buf_size;
-    }
-
-    if (BufTextLen != pos)
-        memmove(Buf + pos + new_text_len, Buf + pos, (size_t)(BufTextLen - pos));
-    memcpy(Buf + pos, new_text, (size_t)new_text_len * sizeof(char));
-    Buf[BufTextLen + new_text_len] = '\0';
-
-    if (CursorPos >= pos)
-        CursorPos += new_text_len;
-    SelectionStart = SelectionEnd = CursorPos;
-    BufDirty = true;
-    BufTextLen += new_text_len;
-}
-
-// Return false to discard a character.
-static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    unsigned int c = *p_char;
-
-    if (c < 128 && c != ' ' && !isprint((int)(c & 0xFF)))
-    {
-        bool pass = false;
-        pass |= (c == '\n' && (flags & ImGuiInputTextFlags_Multiline));
-        pass |= (c == '\t' && (flags & ImGuiInputTextFlags_AllowTabInput));
-        if (!pass)
-            return false;
-    }
-
-    if (c >= 0xE000 && c <= 0xF8FF) // Filter private Unicode range. I don't imagine anybody would want to input them. GLFW on OSX seems to send private characters for special keys like arrow keys.
-        return false;
-
-    if (flags & (ImGuiInputTextFlags_CharsDecimal | ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase | ImGuiInputTextFlags_CharsNoBlank | ImGuiInputTextFlags_CharsScientific))
-    {
-        if (flags & ImGuiInputTextFlags_CharsDecimal)
-            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsScientific)
-            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/') && (c != 'e') && (c != 'E'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsHexadecimal)
-            if (!(c >= '0' && c <= '9') && !(c >= 'a' && c <= 'f') && !(c >= 'A' && c <= 'F'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsUppercase)
-            if (c >= 'a' && c <= 'z')
-                *p_char = (c += (unsigned int)('A'-'a'));
-
-        if (flags & ImGuiInputTextFlags_CharsNoBlank)
-            if (ImCharIsBlankW(c))
-                return false;
-    }
-
-    if (flags & ImGuiInputTextFlags_CallbackCharFilter)
-    {
-        ImGuiInputTextCallbackData callback_data;
-        memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
-        callback_data.EventFlag = ImGuiInputTextFlags_CallbackCharFilter;
-        callback_data.EventChar = (ImWchar)c;
-        callback_data.Flags = flags;
-        callback_data.UserData = user_data;
-        if (callback(&callback_data) != 0)
-            return false;
-        *p_char = callback_data.EventChar;
-        if (!callback_data.EventChar)
-            return false;
-    }
-
-    return true;
-}
-
-// Edit a string of text
-// - buf_size account for the zero-terminator, so a buf_size of 6 can hold "Hello" but not "Hello!".
-//   This is so we can easily call InputText() on static arrays using ARRAYSIZE() and to match 
-//   Note that in std::string world, capacity() would omit 1 byte used by the zero-terminator.
-// - When active, hold on a privately held copy of the text (and apply back to 'buf'). So changing 'buf' while the InputText is active has no effect.
-// - If you want to use ImGui::InputText() with std::string, see misc/stl/imgui_stl.h
-// (FIXME: Rather messy function partly because we are doing UTF8 > u16 > UTF8 conversions on the go to more easily handle stb_textedit calls. Ideally we should stay in UTF-8 all the time. See https://github.com/nothings/stb/issues/188)
-bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2& size_arg, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* callback_user_data)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackHistory) && (flags & ImGuiInputTextFlags_Multiline)));        // Can't use both together (they both use up/down keys)
-    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackCompletion) && (flags & ImGuiInputTextFlags_AllowTabInput))); // Can't use both together (they both use tab key)
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiIO& io = g.IO;
-    const ImGuiStyle& style = g.Style;
-
-    const bool is_multiline = (flags & ImGuiInputTextFlags_Multiline) != 0;
-    const bool is_editable = (flags & ImGuiInputTextFlags_ReadOnly) == 0;
-    const bool is_password = (flags & ImGuiInputTextFlags_Password) != 0;
-    const bool is_undoable = (flags & ImGuiInputTextFlags_NoUndoRedo) == 0;
-    const bool is_resizable = (flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    if (is_resizable)
-        IM_ASSERT(callback != NULL); // Must provide a callback if you set the ImGuiInputTextFlags_CallbackResize flag!
-
-    if (is_multiline) // Open group before calling GetID() because groups tracks id created within their scope, 
-        BeginGroup();
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), (is_multiline ? GetTextLineHeight() * 8.0f : label_size.y) + style.FramePadding.y*2.0f); // Arbitrary default of 8 lines high for multi-line
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? (style.ItemInnerSpacing.x + label_size.x) : 0.0f, 0.0f));
-
-    ImGuiWindow* draw_window = window;
-    if (is_multiline)
-    {
-        ItemAdd(total_bb, id, &frame_bb);
-        if (!BeginChildFrame(id, frame_bb.GetSize()))
-        {
-            EndChildFrame();
-            EndGroup();
-            return false;
-        }
-        draw_window = GetCurrentWindow();
-        draw_window->DC.NavLayerActiveMaskNext |= draw_window->DC.NavLayerCurrentMask; // This is to ensure that EndChild() will display a navigation highlight
-        size.x -= draw_window->ScrollbarSizes.x;
-    }
-    else
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        if (!ItemAdd(total_bb, id, &frame_bb))
-            return false;
-    }
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if (hovered)
-        g.MouseCursor = ImGuiMouseCursor_TextInput;
-
-    // Password pushes a temporary font with only a fallback glyph
-    if (is_password)
-    {
-        const ImFontGlyph* glyph = g.Font->FindGlyph('*');
-        ImFont* password_font = &g.InputTextPasswordFont;
-        password_font->FontSize = g.Font->FontSize;
-        password_font->Scale = g.Font->Scale;
-        password_font->DisplayOffset = g.Font->DisplayOffset;
-        password_font->Ascent = g.Font->Ascent;
-        password_font->Descent = g.Font->Descent;
-        password_font->ContainerAtlas = g.Font->ContainerAtlas;
-        password_font->FallbackGlyph = glyph;
-        password_font->FallbackAdvanceX = glyph->AdvanceX;
-        IM_ASSERT(password_font->Glyphs.empty() && password_font->IndexAdvanceX.empty() && password_font->IndexLookup.empty());
-        PushFont(password_font);
-    }
-
-    // NB: we are only allowed to access 'edit_state' if we are the active widget.
-    ImGuiInputTextState& edit_state = g.InputTextState;
-
-    const bool focus_requested = FocusableItemRegister(window, id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0);    // Using completion callback disable keyboard tabbing
-    const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent);
-    const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code;
-
-    const bool user_clicked = hovered && io.MouseClicked[0];
-    const bool user_scrolled = is_multiline && g.ActiveId == 0 && edit_state.ID == id && g.ActiveIdPreviousFrame == draw_window->GetIDNoKeepAlive("#SCROLLY");
-    const bool user_nav_input_start = (g.ActiveId != id) && ((g.NavInputId == id) || (g.NavActivateId == id && g.NavInputSource == ImGuiInputSource_NavKeyboard));
-
-    bool clear_active_id = false;
-
-    bool select_all = (g.ActiveId != id) && ((flags & ImGuiInputTextFlags_AutoSelectAll) != 0 || user_nav_input_start) && (!is_multiline);
-    if (focus_requested || user_clicked || user_scrolled || user_nav_input_start)
-    {
-        if (g.ActiveId != id)
-        {
-            // Start edition
-            // Take a copy of the initial buffer value (both in original UTF-8 format and converted to wchar)
-            // From the moment we focused we are ignoring the content of 'buf' (unless we are in read-only mode)
-            const int prev_len_w = edit_state.CurLenW;
-            const int init_buf_len = (int)strlen(buf);
-            edit_state.TextW.resize(buf_size+1);             // wchar count <= UTF-8 count. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
-            edit_state.InitialText.resize(init_buf_len + 1); // UTF-8. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
-            memcpy(edit_state.InitialText.Data, buf, init_buf_len + 1);
-            const char* buf_end = NULL;
-            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, buf_size, buf, NULL, &buf_end);
-            edit_state.CurLenA = (int)(buf_end - buf); // We can't get the result from ImStrncpy() above because it is not UTF-8 aware. Here we'll cut off malformed UTF-8.
-            edit_state.CursorAnimReset();
-
-            // Preserve cursor position and undo/redo stack if we come back to same widget
-            // FIXME: We should probably compare the whole buffer to be on the safety side. Comparing buf (utf8) and edit_state.Text (wchar).
-            const bool recycle_state = (edit_state.ID == id) && (prev_len_w == edit_state.CurLenW);
-            if (recycle_state)
-            {
-                // Recycle existing cursor/selection/undo stack but clamp position
-                // Note a single mouse click will override the cursor/position immediately by calling stb_textedit_click handler.
-                edit_state.CursorClamp();
-            }
-            else
-            {
-                edit_state.ID = id;
-                edit_state.ScrollX = 0.0f;
-                stb_textedit_initialize_state(&edit_state.StbState, !is_multiline);
-                if (!is_multiline && focus_requested_by_code)
-                    select_all = true;
-            }
-            if (flags & ImGuiInputTextFlags_AlwaysInsertMode)
-                edit_state.StbState.insert_mode = true;
-            if (!is_multiline && (focus_requested_by_tab || (user_clicked && io.KeyCtrl)))
-                select_all = true;
-        }
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        if (!is_multiline && !(flags & ImGuiInputTextFlags_CallbackHistory))
-            g.ActiveIdAllowNavDirFlags |= ((1 << ImGuiDir_Up) | (1 << ImGuiDir_Down));
-    }
-    else if (io.MouseClicked[0])
-    {
-        // Release focus when we click outside
-        clear_active_id = true;
-    }
-
-    bool value_changed = false;
-    bool enter_pressed = false;
-    int backup_current_text_length = 0;
-
-    if (g.ActiveId == id)
-    {
-        if (!is_editable && !g.ActiveIdIsJustActivated)
-        {
-            // When read-only we always use the live data passed to the function
-            edit_state.TextW.resize(buf_size+1);
-            const char* buf_end = NULL;
-            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, buf, NULL, &buf_end);
-            edit_state.CurLenA = (int)(buf_end - buf);
-            edit_state.CursorClamp();
-        }
-
-        backup_current_text_length = edit_state.CurLenA;
-        edit_state.BufCapacityA = buf_size;
-        edit_state.UserFlags = flags;
-        edit_state.UserCallback = callback;
-        edit_state.UserCallbackData = callback_user_data;
-
-        // Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.
-        // Down the line we should have a cleaner library-wide concept of Selected vs Active.
-        g.ActiveIdAllowOverlap = !io.MouseDown[0];
-        g.WantTextInputNextFrame = 1;
-
-        // Edit in progress
-        const float mouse_x = (io.MousePos.x - frame_bb.Min.x - style.FramePadding.x) + edit_state.ScrollX;
-        const float mouse_y = (is_multiline ? (io.MousePos.y - draw_window->DC.CursorPos.y - style.FramePadding.y) : (g.FontSize*0.5f));
-
-        const bool is_osx = io.ConfigMacOSXBehaviors;
-        if (select_all || (hovered && !is_osx && io.MouseDoubleClicked[0]))
-        {
-            edit_state.SelectAll();
-            edit_state.SelectedAllMouseLock = true;
-        }
-        else if (hovered && is_osx && io.MouseDoubleClicked[0])
-        {
-            // Double-click select a word only, OS X style (by simulating keystrokes)
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT);
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDRIGHT | STB_TEXTEDIT_K_SHIFT);
-        }
-        else if (io.MouseClicked[0] && !edit_state.SelectedAllMouseLock)
-        {
-            if (hovered)
-            {
-                stb_textedit_click(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
-                edit_state.CursorAnimReset();
-            }
-        }
-        else if (io.MouseDown[0] && !edit_state.SelectedAllMouseLock && (io.MouseDelta.x != 0.0f || io.MouseDelta.y != 0.0f))
-        {
-            stb_textedit_drag(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
-            edit_state.CursorAnimReset();
-            edit_state.CursorFollow = true;
-        }
-        if (edit_state.SelectedAllMouseLock && !io.MouseDown[0])
-            edit_state.SelectedAllMouseLock = false;
-
-        if (io.InputCharacters[0])
-        {
-            // Process text input (before we check for Return because using some IME will effectively send a Return?)
-            // We ignore CTRL inputs, but need to allow ALT+CTRL as some keyboards (e.g. German) use AltGR (which _is_ Alt+Ctrl) to input certain characters.
-            bool ignore_inputs = (io.KeyCtrl && !io.KeyAlt) || (is_osx && io.KeySuper);
-            if (!ignore_inputs && is_editable && !user_nav_input_start)
-                for (int n = 0; n < IM_ARRAYSIZE(io.InputCharacters) && io.InputCharacters[n]; n++)
-                {
-                    // Insert character if they pass filtering
-                    unsigned int c = (unsigned int)io.InputCharacters[n];
-                    if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                        edit_state.OnKeyPressed((int)c);
-                }
-
-            // Consume characters
-            memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters));
-        }
-    }
-
-    bool cancel_edit = false;
-    if (g.ActiveId == id && !g.ActiveIdIsJustActivated && !clear_active_id)
-    {
-        // Handle key-presses
-        const int k_mask = (io.KeyShift ? STB_TEXTEDIT_K_SHIFT : 0);
-        const bool is_osx = io.ConfigMacOSXBehaviors;
-        const bool is_shortcut_key = (is_osx ? (io.KeySuper && !io.KeyCtrl) : (io.KeyCtrl && !io.KeySuper)) && !io.KeyAlt && !io.KeyShift; // OS X style: Shortcuts using Cmd/Super instead of Ctrl
-        const bool is_osx_shift_shortcut = is_osx && io.KeySuper && io.KeyShift && !io.KeyCtrl && !io.KeyAlt;
-        const bool is_wordmove_key_down = is_osx ? io.KeyAlt : io.KeyCtrl;                     // OS X style: Text editing cursor movement using Alt instead of Ctrl
-        const bool is_startend_key_down = is_osx && io.KeySuper && !io.KeyCtrl && !io.KeyAlt;  // OS X style: Line/Text Start and End using Cmd+Arrows instead of Home/End
-        const bool is_ctrl_key_only = io.KeyCtrl && !io.KeyShift && !io.KeyAlt && !io.KeySuper;
-        const bool is_shift_key_only = io.KeyShift && !io.KeyCtrl && !io.KeyAlt && !io.KeySuper;
-
-        const bool is_cut   = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_X)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Delete))) && is_editable && !is_password && (!is_multiline || edit_state.HasSelection());
-        const bool is_copy  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_C)) || (is_ctrl_key_only  && IsKeyPressedMap(ImGuiKey_Insert))) && !is_password && (!is_multiline || edit_state.HasSelection());
-        const bool is_paste = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_V)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Insert))) && is_editable;
-        const bool is_undo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Z)) && is_editable && is_undoable);
-        const bool is_redo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Y)) || (is_osx_shift_shortcut && IsKeyPressedMap(ImGuiKey_Z))) && is_editable && is_undoable;
-
-        if (IsKeyPressedMap(ImGuiKey_LeftArrow))                        { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINESTART : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDLEFT : STB_TEXTEDIT_K_LEFT) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_RightArrow))                  { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINEEND : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDRIGHT : STB_TEXTEDIT_K_RIGHT) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_UpArrow) && is_multiline)     { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMax(draw_window->Scroll.y - g.FontSize, 0.0f)); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTSTART : STB_TEXTEDIT_K_UP) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_DownArrow) && is_multiline)   { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMin(draw_window->Scroll.y + g.FontSize, GetScrollMaxY())); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTEND : STB_TEXTEDIT_K_DOWN) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Home))                        { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_End))                         { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Delete) && is_editable)       { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Backspace) && is_editable)
-        {
-            if (!edit_state.HasSelection())
-            {
-                if (is_wordmove_key_down) edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT|STB_TEXTEDIT_K_SHIFT);
-                else if (is_osx && io.KeySuper && !io.KeyAlt && !io.KeyCtrl) edit_state.OnKeyPressed(STB_TEXTEDIT_K_LINESTART|STB_TEXTEDIT_K_SHIFT);
-            }
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_BACKSPACE | k_mask);
-        }
-        else if (IsKeyPressedMap(ImGuiKey_Enter))
-        {
-            bool ctrl_enter_for_new_line = (flags & ImGuiInputTextFlags_CtrlEnterForNewLine) != 0;
-            if (!is_multiline || (ctrl_enter_for_new_line && !io.KeyCtrl) || (!ctrl_enter_for_new_line && io.KeyCtrl))
-            {
-                enter_pressed = clear_active_id = true;
-            }
-            else if (is_editable)
-            {
-                unsigned int c = '\n'; // Insert new line
-                if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                    edit_state.OnKeyPressed((int)c);
-            }
-        }
-        else if ((flags & ImGuiInputTextFlags_AllowTabInput) && IsKeyPressedMap(ImGuiKey_Tab) && !io.KeyCtrl && !io.KeyShift && !io.KeyAlt && is_editable)
-        {
-            unsigned int c = '\t'; // Insert TAB
-            if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                edit_state.OnKeyPressed((int)c);
-        }
-        else if (IsKeyPressedMap(ImGuiKey_Escape))
-        {
-            clear_active_id = cancel_edit = true;
-        }
-        else if (is_undo || is_redo)
-        {
-            edit_state.OnKeyPressed(is_undo ? STB_TEXTEDIT_K_UNDO : STB_TEXTEDIT_K_REDO);
-            edit_state.ClearSelection();
-        }
-        else if (is_shortcut_key && IsKeyPressedMap(ImGuiKey_A))
-        {
-            edit_state.SelectAll();
-            edit_state.CursorFollow = true;
-        }
-        else if (is_cut || is_copy)
-        {
-            // Cut, Copy
-            if (io.SetClipboardTextFn)
-            {
-                const int ib = edit_state.HasSelection() ? ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end) : 0;
-                const int ie = edit_state.HasSelection() ? ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end) : edit_state.CurLenW;
-                edit_state.TempBuffer.resize((ie-ib) * 4 + 1);
-                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data+ib, edit_state.TextW.Data+ie);
-                SetClipboardText(edit_state.TempBuffer.Data);
-            }
-            if (is_cut)
-            {
-                if (!edit_state.HasSelection())
-                    edit_state.SelectAll();
-                edit_state.CursorFollow = true;
-                stb_textedit_cut(&edit_state, &edit_state.StbState);
-            }
-        }
-        else if (is_paste)
-        {
-            if (const char* clipboard = GetClipboardText())
-            {
-                // Filter pasted buffer
-                const int clipboard_len = (int)strlen(clipboard);
-                ImWchar* clipboard_filtered = (ImWchar*)ImGui::MemAlloc((clipboard_len+1) * sizeof(ImWchar));
-                int clipboard_filtered_len = 0;
-                for (const char* s = clipboard; *s; )
-                {
-                    unsigned int c;
-                    s += ImTextCharFromUtf8(&c, s, NULL);
-                    if (c == 0)
-                        break;
-                    if (c >= 0x10000 || !InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                        continue;
-                    clipboard_filtered[clipboard_filtered_len++] = (ImWchar)c;
-                }
-                clipboard_filtered[clipboard_filtered_len] = 0;
-                if (clipboard_filtered_len > 0) // If everything was filtered, ignore the pasting operation
-                {
-                    stb_textedit_paste(&edit_state, &edit_state.StbState, clipboard_filtered, clipboard_filtered_len);
-                    edit_state.CursorFollow = true;
-                }
-                ImGui::MemFree(clipboard_filtered);
-            }
-        }
-    }
-
-    if (g.ActiveId == id)
-    {
-        const char* apply_new_text = NULL;
-        int apply_new_text_length = 0;
-        if (cancel_edit)
-        {
-            // Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
-            if (is_editable && strcmp(buf, edit_state.InitialText.Data) != 0)
-            {
-                apply_new_text = edit_state.InitialText.Data;
-                apply_new_text_length = edit_state.InitialText.Size - 1;
-            }
-        }
-
-        // When using 'ImGuiInputTextFlags_EnterReturnsTrue' as a special case we reapply the live buffer back to the input buffer before clearing ActiveId, even though strictly speaking it wasn't modified on this frame.
-        // If we didn't do that, code like InputInt() with ImGuiInputTextFlags_EnterReturnsTrue would fail. Also this allows the user to use InputText() with ImGuiInputTextFlags_EnterReturnsTrue without maintaining any user-side storage.
-        bool apply_edit_back_to_user_buffer = !cancel_edit || (enter_pressed && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
-        if (apply_edit_back_to_user_buffer)
-        {
-            // Apply new value immediately - copy modified buffer back
-            // Note that as soon as the input box is active, the in-widget value gets priority over any underlying modification of the input buffer
-            // FIXME: We actually always render 'buf' when calling DrawList->AddText, making the comment above incorrect.
-            // FIXME-OPT: CPU waste to do this every time the widget is active, should mark dirty state from the stb_textedit callbacks.
-            if (is_editable)
-            {
-                edit_state.TempBuffer.resize(edit_state.TextW.Size * 4 + 1);
-                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data, NULL);
-            }
-
-            // User callback
-            if ((flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_CallbackHistory | ImGuiInputTextFlags_CallbackAlways)) != 0)
-            {
-                IM_ASSERT(callback != NULL);
-
-                // The reason we specify the usage semantic (Completion/History) is that Completion needs to disable keyboard TABBING at the moment.
-                ImGuiInputTextFlags event_flag = 0;
-                ImGuiKey event_key = ImGuiKey_COUNT;
-                if ((flags & ImGuiInputTextFlags_CallbackCompletion) != 0 && IsKeyPressedMap(ImGuiKey_Tab))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackCompletion;
-                    event_key = ImGuiKey_Tab;
-                }
-                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_UpArrow))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackHistory;
-                    event_key = ImGuiKey_UpArrow;
-                }
-                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_DownArrow))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackHistory;
-                    event_key = ImGuiKey_DownArrow;
-                }
-                else if (flags & ImGuiInputTextFlags_CallbackAlways)
-                    event_flag = ImGuiInputTextFlags_CallbackAlways;
-
-                if (event_flag)
-                {
-                    ImGuiInputTextCallbackData callback_data;
-                    memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
-                    callback_data.EventFlag = event_flag;
-                    callback_data.Flags = flags;
-                    callback_data.UserData = callback_user_data;
-
-                    callback_data.EventKey = event_key;
-                    callback_data.Buf = edit_state.TempBuffer.Data;
-                    callback_data.BufTextLen = edit_state.CurLenA;
-                    callback_data.BufSize = edit_state.BufCapacityA;
-                    callback_data.BufDirty = false;
-
-                    // We have to convert from wchar-positions to UTF-8-positions, which can be pretty slow (an incentive to ditch the ImWchar buffer, see https://github.com/nothings/stb/issues/188)
-                    ImWchar* text = edit_state.TextW.Data;
-                    const int utf8_cursor_pos = callback_data.CursorPos = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.cursor);
-                    const int utf8_selection_start = callback_data.SelectionStart = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_start);
-                    const int utf8_selection_end = callback_data.SelectionEnd = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_end);
-
-                    // Call user code
-                    callback(&callback_data);
-
-                    // Read back what user may have modified
-                    IM_ASSERT(callback_data.Buf == edit_state.TempBuffer.Data);  // Invalid to modify those fields
-                    IM_ASSERT(callback_data.BufSize == edit_state.BufCapacityA);
-                    IM_ASSERT(callback_data.Flags == flags);
-                    if (callback_data.CursorPos != utf8_cursor_pos)            { edit_state.StbState.cursor = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.CursorPos); edit_state.CursorFollow = true; }
-                    if (callback_data.SelectionStart != utf8_selection_start)  { edit_state.StbState.select_start = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionStart); }
-                    if (callback_data.SelectionEnd != utf8_selection_end)      { edit_state.StbState.select_end = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionEnd); }
-                    if (callback_data.BufDirty)
-                    {
-                        IM_ASSERT(callback_data.BufTextLen == (int)strlen(callback_data.Buf)); // You need to maintain BufTextLen if you change the text!
-                        if (callback_data.BufTextLen > backup_current_text_length && is_resizable)
-                            edit_state.TextW.resize(edit_state.TextW.Size + (callback_data.BufTextLen - backup_current_text_length));
-                        edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, callback_data.Buf, NULL);
-                        edit_state.CurLenA = callback_data.BufTextLen;  // Assume correct length and valid UTF-8 from user, saves us an extra strlen()
-                        edit_state.CursorAnimReset();
-                    }
-                }
-            }
-
-            // Will copy result string if modified
-            if (is_editable && strcmp(edit_state.TempBuffer.Data, buf) != 0)
-            {
-                apply_new_text = edit_state.TempBuffer.Data;
-                apply_new_text_length = edit_state.CurLenA;
-            }
-        }
-
-        // Copy result to user buffer
-        if (apply_new_text)
-        {
-            IM_ASSERT(apply_new_text_length >= 0);
-            if (backup_current_text_length != apply_new_text_length && is_resizable)
-            {
-                ImGuiInputTextCallbackData callback_data;
-                callback_data.EventFlag = ImGuiInputTextFlags_CallbackResize;
-                callback_data.Flags = flags;
-                callback_data.Buf = buf;
-                callback_data.BufTextLen = apply_new_text_length;
-                callback_data.BufSize = ImMax(buf_size, apply_new_text_length + 1);
-                callback_data.UserData = callback_user_data;
-                callback(&callback_data);
-                buf = callback_data.Buf;
-                buf_size = callback_data.BufSize;
-                apply_new_text_length = ImMin(callback_data.BufTextLen, buf_size - 1);
-                IM_ASSERT(apply_new_text_length <= buf_size);
-            }
-
-            // If the underlying buffer resize was denied or not carried to the next frame, apply_new_text_length+1 may be >= buf_size.
-            ImStrncpy(buf, edit_state.TempBuffer.Data, ImMin(apply_new_text_length + 1, buf_size));
-            value_changed = true;
-        }
-
-        // Clear temporary user storage
-        edit_state.UserFlags = 0;
-        edit_state.UserCallback = NULL;
-        edit_state.UserCallbackData = NULL;
-    }
-
-    // Release active ID at the end of the function (so e.g. pressing Return still does a final application of the value)
-    if (clear_active_id && g.ActiveId == id)
-        ClearActiveID();
-
-    // Render
-    // Select which buffer we are going to display. When ImGuiInputTextFlags_NoLiveEdit is set 'buf' might still be the old value. We set buf to NULL to prevent accidental usage from now on.
-    const char* buf_display = (g.ActiveId == id && is_editable) ? edit_state.TempBuffer.Data : buf; buf = NULL;
-
-    // Set upper limit of single-line InputTextEx() at 2 million characters strings. The current pathological worst case is a long line
-    // without any carriage return, which would makes ImFont::RenderText() reserve too many vertices and probably crash. Avoid it altogether.
-    // Note that we only use this limit on single-line InputText(), so a pathologically large line on a InputTextMultiline() would still crash.
-    const int buf_display_max_length = 2 * 1024 * 1024;
-
-    if (!is_multiline)
-    {
-        RenderNavHighlight(frame_bb, id);
-        RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-    }
-
-    const ImVec4 clip_rect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + size.x, frame_bb.Min.y + size.y); // Not using frame_bb.Max because we have adjusted size
-    ImVec2 render_pos = is_multiline ? draw_window->DC.CursorPos : frame_bb.Min + style.FramePadding;
-    ImVec2 text_size(0.f, 0.f);
-    const bool is_currently_scrolling = (edit_state.ID == id && is_multiline && g.ActiveId == draw_window->GetIDNoKeepAlive("#SCROLLY"));
-    if (g.ActiveId == id || is_currently_scrolling)
-    {
-        edit_state.CursorAnim += io.DeltaTime;
-
-        // This is going to be messy. We need to:
-        // - Display the text (this alone can be more easily clipped)
-        // - Handle scrolling, highlight selection, display cursor (those all requires some form of 1d->2d cursor position calculation)
-        // - Measure text height (for scrollbar)
-        // We are attempting to do most of that in **one main pass** to minimize the computation cost (non-negligible for large amount of text) + 2nd pass for selection rendering (we could merge them by an extra refactoring effort)
-        // FIXME: This should occur on buf_display but we'd need to maintain cursor/select_start/select_end for UTF-8.
-        const ImWchar* text_begin = edit_state.TextW.Data;
-        ImVec2 cursor_offset, select_start_offset;
-
-        {
-            // Count lines + find lines numbers straddling 'cursor' and 'select_start' position.
-            const ImWchar* searches_input_ptr[2];
-            searches_input_ptr[0] = text_begin + edit_state.StbState.cursor;
-            searches_input_ptr[1] = NULL;
-            int searches_remaining = 1;
-            int searches_result_line_number[2] = { -1, -999 };
-            if (edit_state.StbState.select_start != edit_state.StbState.select_end)
-            {
-                searches_input_ptr[1] = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
-                searches_result_line_number[1] = -1;
-                searches_remaining++;
-            }
-
-            // Iterate all lines to find our line numbers
-            // In multi-line mode, we never exit the loop until all lines are counted, so add one extra to the searches_remaining counter.
-            searches_remaining += is_multiline ? 1 : 0;
-            int line_count = 0;
-            for (const ImWchar* s = text_begin; *s != 0; s++)
-                if (*s == '\n')
-                {
-                    line_count++;
-                    if (searches_result_line_number[0] == -1 && s >= searches_input_ptr[0]) { searches_result_line_number[0] = line_count; if (--searches_remaining <= 0) break; }
-                    if (searches_result_line_number[1] == -1 && s >= searches_input_ptr[1]) { searches_result_line_number[1] = line_count; if (--searches_remaining <= 0) break; }
-                }
-            line_count++;
-            if (searches_result_line_number[0] == -1) searches_result_line_number[0] = line_count;
-            if (searches_result_line_number[1] == -1) searches_result_line_number[1] = line_count;
-
-            // Calculate 2d position by finding the beginning of the line and measuring distance
-            cursor_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[0], text_begin), searches_input_ptr[0]).x;
-            cursor_offset.y = searches_result_line_number[0] * g.FontSize;
-            if (searches_result_line_number[1] >= 0)
-            {
-                select_start_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[1], text_begin), searches_input_ptr[1]).x;
-                select_start_offset.y = searches_result_line_number[1] * g.FontSize;
-            }
-
-            // Store text height (note that we haven't calculated text width at all, see GitHub issues #383, #1224)
-            if (is_multiline)
-                text_size = ImVec2(size.x, line_count * g.FontSize);
-        }
-
-        // Scroll
-        if (edit_state.CursorFollow)
-        {
-            // Horizontal scroll in chunks of quarter width
-            if (!(flags & ImGuiInputTextFlags_NoHorizontalScroll))
-            {
-                const float scroll_increment_x = size.x * 0.25f;
-                if (cursor_offset.x < edit_state.ScrollX)
-                    edit_state.ScrollX = (float)(int)ImMax(0.0f, cursor_offset.x - scroll_increment_x);
-                else if (cursor_offset.x - size.x >= edit_state.ScrollX)
-                    edit_state.ScrollX = (float)(int)(cursor_offset.x - size.x + scroll_increment_x);
-            }
-            else
-            {
-                edit_state.ScrollX = 0.0f;
-            }
-
-            // Vertical scroll
-            if (is_multiline)
-            {
-                float scroll_y = draw_window->Scroll.y;
-                if (cursor_offset.y - g.FontSize < scroll_y)
-                    scroll_y = ImMax(0.0f, cursor_offset.y - g.FontSize);
-                else if (cursor_offset.y - size.y >= scroll_y)
-                    scroll_y = cursor_offset.y - size.y;
-                draw_window->DC.CursorPos.y += (draw_window->Scroll.y - scroll_y);   // To avoid a frame of lag
-                draw_window->Scroll.y = scroll_y;
-                render_pos.y = draw_window->DC.CursorPos.y;
-            }
-        }
-        edit_state.CursorFollow = false;
-        const ImVec2 render_scroll = ImVec2(edit_state.ScrollX, 0.0f);
-
-        // Draw selection
-        if (edit_state.StbState.select_start != edit_state.StbState.select_end)
-        {
-            const ImWchar* text_selected_begin = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
-            const ImWchar* text_selected_end = text_begin + ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end);
-
-            float bg_offy_up = is_multiline ? 0.0f : -1.0f;    // FIXME: those offsets should be part of the style? they don't play so well with multi-line selection.
-            float bg_offy_dn = is_multiline ? 0.0f : 2.0f;
-            ImU32 bg_color = GetColorU32(ImGuiCol_TextSelectedBg);
-            ImVec2 rect_pos = render_pos + select_start_offset - render_scroll;
-            for (const ImWchar* p = text_selected_begin; p < text_selected_end; )
-            {
-                if (rect_pos.y > clip_rect.w + g.FontSize)
-                    break;
-                if (rect_pos.y < clip_rect.y)
-                {
-                    while (p < text_selected_end)
-                        if (*p++ == '\n')
-                            break;
-                }
-                else
-                {
-                    ImVec2 rect_size = InputTextCalcTextSizeW(p, text_selected_end, &p, NULL, true);
-                    if (rect_size.x <= 0.0f) rect_size.x = (float)(int)(g.Font->GetCharAdvance((unsigned short)' ') * 0.50f); // So we can see selected empty lines
-                    ImRect rect(rect_pos + ImVec2(0.0f, bg_offy_up - g.FontSize), rect_pos +ImVec2(rect_size.x, bg_offy_dn));
-                    rect.ClipWith(clip_rect);
-                    if (rect.Overlaps(clip_rect))
-                        draw_window->DrawList->AddRectFilled(rect.Min, rect.Max, bg_color);
-                }
-                rect_pos.x = render_pos.x - render_scroll.x;
-                rect_pos.y += g.FontSize;
-            }
-        }
-
-        const int buf_display_len = edit_state.CurLenA;
-        if (is_multiline || buf_display_len < buf_display_max_length)
-            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos - render_scroll, GetColorU32(ImGuiCol_Text), buf_display, buf_display + buf_display_len, 0.0f, is_multiline ? NULL : &clip_rect);
-
-        // Draw blinking cursor
-        bool cursor_is_visible = (!g.IO.ConfigCursorBlink) || (g.InputTextState.CursorAnim <= 0.0f) || ImFmod(g.InputTextState.CursorAnim, 1.20f) <= 0.80f;
-        ImVec2 cursor_screen_pos = render_pos + cursor_offset - render_scroll;
-        ImRect cursor_screen_rect(cursor_screen_pos.x, cursor_screen_pos.y-g.FontSize+0.5f, cursor_screen_pos.x+1.0f, cursor_screen_pos.y-1.5f);
-        if (cursor_is_visible && cursor_screen_rect.Overlaps(clip_rect))
-            draw_window->DrawList->AddLine(cursor_screen_rect.Min, cursor_screen_rect.GetBL(), GetColorU32(ImGuiCol_Text));
-
-        // Notify OS of text input position for advanced IME (-1 x offset so that Windows IME can cover our cursor. Bit of an extra nicety.)
-        if (is_editable)
-            g.PlatformImePos = ImVec2(cursor_screen_pos.x - 1, cursor_screen_pos.y - g.FontSize);
-    }
-    else
-    {
-        // Render text only
-        const char* buf_end = NULL;
-        if (is_multiline)
-            text_size = ImVec2(size.x, InputTextCalcTextLenAndLineCount(buf_display, &buf_end) * g.FontSize); // We don't need width
-        else
-            buf_end = buf_display + strlen(buf_display);
-        if (is_multiline || (buf_end - buf_display) < buf_display_max_length)
-            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos, GetColorU32(ImGuiCol_Text), buf_display, buf_end, 0.0f, is_multiline ? NULL : &clip_rect);
-    }
-
-    if (is_multiline)
-    {
-        Dummy(text_size + ImVec2(0.0f, g.FontSize)); // Always add room to scroll an extra line
-        EndChildFrame();
-        EndGroup();
-    }
-
-    if (is_password)
-        PopFont();
-
-    // Log as text
-    if (g.LogEnabled && !is_password)
-        LogRenderedText(&render_pos, buf_display, NULL);
-
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    if (value_changed)
-        MarkItemEdited(id);
-
-    if ((flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0)
-        return enter_pressed;
-    else
-        return value_changed;
-}
-
-bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    IM_ASSERT(!(flags & ImGuiInputTextFlags_Multiline)); // call InputTextMultiline()
-    return InputTextEx(label, buf, (int)buf_size, ImVec2(0,0), flags, callback, user_data);
-}
-
-bool ImGui::InputTextMultiline(const char* label, char* buf, size_t buf_size, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    return InputTextEx(label, buf, (int)buf_size, size, flags | ImGuiInputTextFlags_Multiline, callback, user_data);
-}
-
-// NB: format here must be a simple "%xx" format string with no prefix/suffix (unlike the Drag/Slider functions "format" argument)
-bool ImGui::InputScalar(const char* label, ImGuiDataType data_type, void* data_ptr, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-
-    char buf[64];
-    DataTypeFormatString(buf, IM_ARRAYSIZE(buf), data_type, data_ptr, format);
-
-    bool value_changed = false;
-    if ((extra_flags & (ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsScientific)) == 0)
-        extra_flags |= ImGuiInputTextFlags_CharsDecimal;
-    extra_flags |= ImGuiInputTextFlags_AutoSelectAll;
-
-    if (step != NULL)
-    {
-        const float button_size = GetFrameHeight();
-
-        BeginGroup(); // The only purpose of the group here is to allow the caller to query item data e.g. IsItemActive()
-        PushID(label);
-        PushItemWidth(ImMax(1.0f, CalcItemWidth() - (button_size + style.ItemInnerSpacing.x) * 2));
-        if (InputText("", buf, IM_ARRAYSIZE(buf), extra_flags)) // PushId(label) + "" gives us the expected ID from outside point of view
-            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
-        PopItemWidth();
-
-        // Step buttons
-        SameLine(0, style.ItemInnerSpacing.x);
-        if (ButtonEx("-", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
-        {
-            DataTypeApplyOp(data_type, '-', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
-            value_changed = true;
-        }
-        SameLine(0, style.ItemInnerSpacing.x);
-        if (ButtonEx("+", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
-        {
-            DataTypeApplyOp(data_type, '+', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
-            value_changed = true;
-        }
-        SameLine(0, style.ItemInnerSpacing.x);
-        TextUnformatted(label, FindRenderedTextEnd(label));
-
-        PopID();
-        EndGroup();
-    }
-    else
-    {
-        if (InputText(label, buf, IM_ARRAYSIZE(buf), extra_flags))
-            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
-    }
-
-    return value_changed;
-}
-
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    extra_flags |= ImGuiInputTextFlags_CharsScientific;
-    return InputScalar(label, ImGuiDataType_Float, (void*)v, (void*)(step>0.0f ? &step : NULL), (void*)(step_fast>0.0f ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputDouble(const char* label, double* v, double step, double step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    extra_flags |= ImGuiInputTextFlags_CharsScientific;
-    return InputScalar(label, ImGuiDataType_Double, (void*)v, (void*)(step>0.0 ? &step : NULL), (void*)(step_fast>0.0 ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputInt(const char* label, int* v, int step, int step_fast, ImGuiInputTextFlags extra_flags)
-{
-    // Hexadecimal input provided as a convenience but the flag name is awkward. Typically you'd use InputText() to parse your own data, if you want to handle prefixes.
-    const char* format = (extra_flags & ImGuiInputTextFlags_CharsHexadecimal) ? "%08X" : "%d";
-    return InputScalar(label, ImGuiDataType_S32, (void*)v, (void*)(step>0 ? &step : NULL), (void*)(step_fast>0 ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= InputScalar("##v", data_type, v, step, step_fast, format, extra_flags);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
-}
-
-// Prefer using "const char* format" directly, which is more flexible and consistent with other API.
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputFloat(label, v, step, step_fast, format, extra_flags);
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
-}
-#endif // IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-
-bool ImGui::InputInt2(const char* label, int v[2], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 2, NULL, NULL, "%d", extra_flags);
-}
-
-bool ImGui::InputInt3(const char* label, int v[3], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 3, NULL, NULL, "%d", extra_flags);
-}
-
-bool ImGui::InputInt4(const char* label, int v[4], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 4, NULL, NULL, "%d", extra_flags);
-}
-
-static float CalcMaxPopupHeightFromItemCount(int items_count)
-{
-    ImGuiContext& g = *GImGui;
-    if (items_count <= 0)
-        return FLT_MAX;
-    return (g.FontSize + g.Style.ItemSpacing.y) * items_count - g.Style.ItemSpacing.y + (g.Style.WindowPadding.y * 2);
-}
-
-bool ImGui::BeginCombo(const char* label, const char* preview_value, ImGuiComboFlags flags)
-{
-    // Always consume the SetNextWindowSizeConstraint() call in our early return paths
-    ImGuiContext& g = *GImGui;
-    ImGuiCond backup_next_window_size_constraint = g.NextWindowData.SizeConstraintCond;
-    g.NextWindowData.SizeConstraintCond = 0;
-
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    IM_ASSERT((flags & (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)) != (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)); // Can't use both flags together
-
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    const float arrow_size = (flags & ImGuiComboFlags_NoArrowButton) ? 0.0f : GetFrameHeight();
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const float w = (flags & ImGuiComboFlags_NoPreview) ? arrow_size : CalcItemWidth();
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, id, &frame_bb))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(frame_bb, id, &hovered, &held);
-    bool popup_open = IsPopupOpen(id);
-
-    const ImRect value_bb(frame_bb.Min, frame_bb.Max - ImVec2(arrow_size, 0.0f));
-    const ImU32 frame_col = GetColorU32(hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    if (!(flags & ImGuiComboFlags_NoPreview))
-        window->DrawList->AddRectFilled(frame_bb.Min, ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Max.y), frame_col, style.FrameRounding, ImDrawCornerFlags_Left);
-    if (!(flags & ImGuiComboFlags_NoArrowButton))
-    {
-        window->DrawList->AddRectFilled(ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Min.y), frame_bb.Max, GetColorU32((popup_open || hovered) ? ImGuiCol_ButtonHovered : ImGuiCol_Button), style.FrameRounding, (w <= arrow_size) ? ImDrawCornerFlags_All : ImDrawCornerFlags_Right);
-        RenderArrow(ImVec2(frame_bb.Max.x - arrow_size + style.FramePadding.y, frame_bb.Min.y + style.FramePadding.y), ImGuiDir_Down);
-    }
-    RenderFrameBorder(frame_bb.Min, frame_bb.Max, style.FrameRounding);
-    if (preview_value != NULL && !(flags & ImGuiComboFlags_NoPreview))
-        RenderTextClipped(frame_bb.Min + style.FramePadding, value_bb.Max, preview_value, NULL, NULL, ImVec2(0.0f,0.0f));
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    if ((pressed || g.NavActivateId == id) && !popup_open)
-    {
-        if (window->DC.NavLayerCurrent == 0)
-            window->NavLastIds[0] = id;
-        OpenPopupEx(id);
-        popup_open = true;
-    }
-
-    if (!popup_open)
-        return false;
-
-    if (backup_next_window_size_constraint)
-    {
-        g.NextWindowData.SizeConstraintCond = backup_next_window_size_constraint;
-        g.NextWindowData.SizeConstraintRect.Min.x = ImMax(g.NextWindowData.SizeConstraintRect.Min.x, w);
-    }
-    else
-    {
-        if ((flags & ImGuiComboFlags_HeightMask_) == 0)
-            flags |= ImGuiComboFlags_HeightRegular;
-        IM_ASSERT(ImIsPowerOfTwo(flags & ImGuiComboFlags_HeightMask_));    // Only one
-        int popup_max_height_in_items = -1;
-        if (flags & ImGuiComboFlags_HeightRegular)     popup_max_height_in_items = 8;
-        else if (flags & ImGuiComboFlags_HeightSmall)  popup_max_height_in_items = 4;
-        else if (flags & ImGuiComboFlags_HeightLarge)  popup_max_height_in_items = 20;
-        SetNextWindowSizeConstraints(ImVec2(w, 0.0f), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
-    }
-
-    char name[16];
-    ImFormatString(name, IM_ARRAYSIZE(name), "##Combo_%02d", g.CurrentPopupStack.Size); // Recycle windows based on depth
-
-    // Peak into expected window size so we can position it
-    if (ImGuiWindow* popup_window = FindWindowByName(name))
-        if (popup_window->WasActive)
-        {
-            ImVec2 size_expected = CalcWindowExpectedSize(popup_window);
-            if (flags & ImGuiComboFlags_PopupAlignLeft)
-                popup_window->AutoPosLastDirection = ImGuiDir_Left;
-            ImRect r_outer = GetWindowAllowedExtentRect(popup_window);
-            ImVec2 pos = FindBestWindowPosForPopupEx(frame_bb.GetBL(), size_expected, &popup_window->AutoPosLastDirection, r_outer, frame_bb, ImGuiPopupPositionPolicy_ComboBox);
-            SetNextWindowPos(pos);
-        }
-
-    // Horizontally align ourselves with the framed text
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_Popup | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoSavedSettings;
-    PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(style.FramePadding.x, style.WindowPadding.y));
-    bool ret = Begin(name, NULL, window_flags);
-    PopStyleVar();
-    if (!ret)
-    {
-        EndPopup();
-        IM_ASSERT(0);   // This should never happen as we tested for IsPopupOpen() above
-        return false;
-    }
-    return true;
-}
-
-void ImGui::EndCombo()
-{
-    EndPopup();
-}
-
-// Getter for the old Combo() API: const char*[]
-static bool Items_ArrayGetter(void* data, int idx, const char** out_text)
-{
-    const char* const* items = (const char* const*)data;
-    if (out_text)
-        *out_text = items[idx];
-    return true;
-}
-
-// Getter for the old Combo() API: "item1\0item2\0item3\0"
-static bool Items_SingleStringGetter(void* data, int idx, const char** out_text)
-{
-    // FIXME-OPT: we could pre-compute the indices to fasten this. But only 1 active combo means the waste is limited.
-    const char* items_separated_by_zeros = (const char*)data;
-    int items_count = 0;
-    const char* p = items_separated_by_zeros;
-    while (*p)
-    {
-        if (idx == items_count)
-            break;
-        p += strlen(p) + 1;
-        items_count++;
-    }
-    if (!*p)
-        return false;
-    if (out_text)
-        *out_text = p;
-    return true;
-}
-
-// Old API, prefer using BeginCombo() nowadays if you can.
-bool ImGui::Combo(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int popup_max_height_in_items)
-{
-    ImGuiContext& g = *GImGui;
-
-    // Call the getter to obtain the preview string which is a parameter to BeginCombo()
-    const char* preview_value = NULL;
-    if (*current_item >= 0 && *current_item < items_count)
-        items_getter(data, *current_item, &preview_value);
-
-    // The old Combo() API exposed "popup_max_height_in_items". The new more general BeginCombo() API doesn't have/need it, but we emulate it here.
-    if (popup_max_height_in_items != -1 && !g.NextWindowData.SizeConstraintCond)
-        SetNextWindowSizeConstraints(ImVec2(0,0), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
-
-    if (!BeginCombo(label, preview_value, ImGuiComboFlags_None))
-        return false;
-
-    // Display items
-    // FIXME-OPT: Use clipper (but we need to disable it on the appearing frame to make sure our call to SetItemDefaultFocus() is processed)
-    bool value_changed = false;
-    for (int i = 0; i < items_count; i++)
-    {
-        PushID((void*)(intptr_t)i);
-        const bool item_selected = (i == *current_item);
-        const char* item_text;
-        if (!items_getter(data, i, &item_text))
-            item_text = "*Unknown item*";
-        if (Selectable(item_text, item_selected))
-        {
-            value_changed = true;
-            *current_item = i;
-        }
-        if (item_selected)
-            SetItemDefaultFocus();
-        PopID();
-    }
-
-    EndCombo();
-    return value_changed;
-}
-
-// Combo box helper allowing to pass an array of strings.
-bool ImGui::Combo(const char* label, int* current_item, const char* const items[], int items_count, int height_in_items)
-{
-    const bool value_changed = Combo(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_in_items);
-    return value_changed;
-}
-
-// Combo box helper allowing to pass all items in a single string literal holding multiple zero-terminated items "item1\0item2\0" 
-bool ImGui::Combo(const char* label, int* current_item, const char* items_separated_by_zeros, int height_in_items)
-{
-    int items_count = 0;
-    const char* p = items_separated_by_zeros;       // FIXME-OPT: Avoid computing this, or at least only when combo is open
-    while (*p)
-    {
-        p += strlen(p) + 1;
-        items_count++;
-    }
-    bool value_changed = Combo(label, current_item, Items_SingleStringGetter, (void*)items_separated_by_zeros, items_count, height_in_items);
-    return value_changed;
-}
-
-// Tip: pass an empty label (e.g. "##dummy") then you can use the space to draw other text or image.
-// But you need to make sure the ID is unique, e.g. enclose calls in PushID/PopID or use ##unique_id.
-bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet) // FIXME-OPT: Avoid if vertically clipped.
-        PopClipRect();
-
-    ImGuiID id = window->GetID(label);
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-    ImVec2 size(size_arg.x != 0.0f ? size_arg.x : label_size.x, size_arg.y != 0.0f ? size_arg.y : label_size.y);
-    ImVec2 pos = window->DC.CursorPos;
-    pos.y += window->DC.CurrentLineTextBaseOffset;
-    ImRect bb_inner(pos, pos + size);
-    ItemSize(bb_inner);
-
-    // Fill horizontal space.
-    ImVec2 window_padding = window->WindowPadding;
-    float max_x = (flags & ImGuiSelectableFlags_SpanAllColumns) ? GetWindowContentRegionMax().x : GetContentRegionMax().x;
-    float w_draw = ImMax(label_size.x, window->Pos.x + max_x - window_padding.x - window->DC.CursorPos.x);
-    ImVec2 size_draw((size_arg.x != 0 && !(flags & ImGuiSelectableFlags_DrawFillAvailWidth)) ? size_arg.x : w_draw, size_arg.y != 0.0f ? size_arg.y : size.y);
-    ImRect bb(pos, pos + size_draw);
-    if (size_arg.x == 0.0f || (flags & ImGuiSelectableFlags_DrawFillAvailWidth))
-        bb.Max.x += window_padding.x;
-
-    // Selectables are tightly packed together, we extend the box to cover spacing between selectable.
-    float spacing_L = (float)(int)(style.ItemSpacing.x * 0.5f);
-    float spacing_U = (float)(int)(style.ItemSpacing.y * 0.5f);
-    float spacing_R = style.ItemSpacing.x - spacing_L;
-    float spacing_D = style.ItemSpacing.y - spacing_U;
-    bb.Min.x -= spacing_L;
-    bb.Min.y -= spacing_U;
-    bb.Max.x += spacing_R;
-    bb.Max.y += spacing_D;
-    if (!ItemAdd(bb, (flags & ImGuiSelectableFlags_Disabled) ? 0 : id))
-    {
-        if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
-            PushColumnClipRect();
-        return false;
-    }
-
-    // We use NoHoldingActiveID on menus so user can click and _hold_ on a menu then drag to browse child entries
-    ImGuiButtonFlags button_flags = 0;
-    if (flags & ImGuiSelectableFlags_NoHoldingActiveID) button_flags |= ImGuiButtonFlags_NoHoldingActiveID;
-    if (flags & ImGuiSelectableFlags_PressedOnClick) button_flags |= ImGuiButtonFlags_PressedOnClick;
-    if (flags & ImGuiSelectableFlags_PressedOnRelease) button_flags |= ImGuiButtonFlags_PressedOnRelease;
-    if (flags & ImGuiSelectableFlags_Disabled) button_flags |= ImGuiButtonFlags_Disabled;
-    if (flags & ImGuiSelectableFlags_AllowDoubleClick) button_flags |= ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnDoubleClick;
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, button_flags);
-    if (flags & ImGuiSelectableFlags_Disabled)
-        selected = false;
-
-    // Hovering selectable with mouse updates NavId accordingly so navigation can be resumed with gamepad/keyboard (this doesn't happen on most widgets)
-    if (pressed || hovered)
-        if (!g.NavDisableMouseHover && g.NavWindow == window && g.NavLayer == window->DC.NavLayerCurrent)
-        {
-            g.NavDisableHighlight = true;
-            SetNavID(id, window->DC.NavLayerCurrent);
-        }
-    if (pressed)
-        MarkItemEdited(id);
-
-    // Render
-    if (hovered || selected)
-    {
-        const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
-        RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
-        RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_TypeThin | ImGuiNavHighlightFlags_NoRounding);
-    }
-
-    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
-    {
-        PushColumnClipRect();
-        bb.Max.x -= (GetContentRegionMax().x - max_x);
-    }
-
-    if (flags & ImGuiSelectableFlags_Disabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-    RenderTextClipped(bb_inner.Min, bb.Max, label, NULL, &label_size, ImVec2(0.0f,0.0f));
-    if (flags & ImGuiSelectableFlags_Disabled) PopStyleColor();
-
-    // Automatically close popups
-    if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_DontClosePopups) && !(window->DC.ItemFlags & ImGuiItemFlags_SelectableDontClosePopup))
-        CloseCurrentPopup();
-    return pressed;
-}
-
-bool ImGui::Selectable(const char* label, bool* p_selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
-{
-    if (Selectable(label, *p_selected, flags, size_arg))
-    {
-        *p_selected = !*p_selected;
-        return true;
-    }
-    return false;
-}
-
-// FIXME: Rename to BeginListBox()
-// Helper to calculate the size of a listbox and display a label on the right.
-// Tip: To have a list filling the entire window width, PushItemWidth(-1) and pass an empty label "##empty"
-bool ImGui::ListBoxHeader(const char* label, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    const ImGuiStyle& style = GetStyle();
-    const ImGuiID id = GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
-    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), GetTextLineHeightWithSpacing() * 7.4f + style.ItemSpacing.y);
-    ImVec2 frame_size = ImVec2(size.x, ImMax(size.y, label_size.y));
-    ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + frame_size);
-    ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-    window->DC.LastItemRect = bb; // Forward storage for ListBoxFooter.. dodgy.
-
-    BeginGroup();
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    BeginChildFrame(id, frame_bb.GetSize());
-    return true;
-}
-
-// FIXME: Rename to BeginListBox()
-bool ImGui::ListBoxHeader(const char* label, int items_count, int height_in_items)
-{
-    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
-    // We don't add +0.40f if items_count <= height_in_items. It is slightly dodgy, because it means a dynamic list of items will make the widget resize occasionally when it crosses that size.
-    // I am expecting that someone will come and complain about this behavior in a remote future, then we can advise on a better solution.
-    if (height_in_items < 0)
-        height_in_items = ImMin(items_count, 7);
-    float height_in_items_f = height_in_items < items_count ? (height_in_items + 0.40f) : (height_in_items + 0.00f);
-
-    // We include ItemSpacing.y so that a list sized for the exact number of items doesn't make a scrollbar appears. We could also enforce that by passing a flag to BeginChild().
-    ImVec2 size;
-    size.x = 0.0f;
-    size.y = GetTextLineHeightWithSpacing() * height_in_items_f + GetStyle().ItemSpacing.y;
-    return ListBoxHeader(label, size);
-}
-
-// FIXME: Rename to EndListBox()
-void ImGui::ListBoxFooter()
-{
-    ImGuiWindow* parent_window = GetCurrentWindow()->ParentWindow;
-    const ImRect bb = parent_window->DC.LastItemRect;
-    const ImGuiStyle& style = GetStyle();
-
-    EndChildFrame();
-
-    // Redeclare item size so that it includes the label (we have stored the full size in LastItemRect)
-    // We call SameLine() to restore DC.CurrentLine* data
-    SameLine();
-    parent_window->DC.CursorPos = bb.Min;
-    ItemSize(bb, style.FramePadding.y);
-    EndGroup();
-}
-
-bool ImGui::ListBox(const char* label, int* current_item, const char* const items[], int items_count, int height_items)
-{
-    const bool value_changed = ListBox(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_items);
-    return value_changed;
-}
-
-bool ImGui::ListBox(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int height_in_items)
-{
-    if (!ListBoxHeader(label, items_count, height_in_items))
-        return false;
-
-    // Assume all items have even height (= 1 line of text). If you need items of different or variable sizes you can create a custom version of ListBox() in your code without using the clipper.
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    ImGuiListClipper clipper(items_count, GetTextLineHeightWithSpacing()); // We know exactly our line height here so we pass it as a minor optimization, but generally you don't need to.
-    while (clipper.Step())
-        for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++)
-        {
-            const bool item_selected = (i == *current_item);
-            const char* item_text;
-            if (!items_getter(data, i, &item_text))
-                item_text = "*Unknown item*";
-
-            PushID(i);
-            if (Selectable(item_text, item_selected))
-            {
-                *current_item = i;
-                value_changed = true;
-            }
-            if (item_selected)
-                SetItemDefaultFocus();
-            PopID();
-        }
-    ListBoxFooter();
-    if (value_changed)
-        MarkItemEdited(g.CurrentWindow->DC.LastItemId);
-
-    return value_changed;
-}
-
-bool ImGui::MenuItem(const char* label, const char* shortcut, bool selected, bool enabled)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    ImGuiStyle& style = g.Style;
-    ImVec2 pos = window->DC.CursorPos;
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    ImGuiSelectableFlags flags = ImGuiSelectableFlags_PressedOnRelease | (enabled ? 0 : ImGuiSelectableFlags_Disabled);
-    bool pressed;
-    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
-    {
-        // Mimic the exact layout spacing of BeginMenu() to allow MenuItem() inside a menu bar, which is a little misleading but may be useful
-        // Note that in this situation we render neither the shortcut neither the selected tick mark
-        float w = label_size.x;
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
-        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
-        pressed = Selectable(label, false, flags, ImVec2(w, 0.0f));
-        PopStyleVar();
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
-    }
-    else
-    {
-        ImVec2 shortcut_size = shortcut ? CalcTextSize(shortcut, NULL) : ImVec2(0.0f, 0.0f);
-        float w = window->MenuColumns.DeclColumns(label_size.x, shortcut_size.x, (float)(int)(g.FontSize * 1.20f)); // Feedback for next frame
-        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
-        pressed = Selectable(label, false, flags | ImGuiSelectableFlags_DrawFillAvailWidth, ImVec2(w, 0.0f));
-        if (shortcut_size.x > 0.0f)
-        {
-            PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-            RenderText(pos + ImVec2(window->MenuColumns.Pos[1] + extra_w, 0.0f), shortcut, NULL, false);
-            PopStyleColor();
-        }
-        if (selected)
-            RenderCheckMark(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.40f, g.FontSize * 0.134f * 0.5f), GetColorU32(enabled ? ImGuiCol_Text : ImGuiCol_TextDisabled), g.FontSize  * 0.866f);
-    }
-    return pressed;
-}
-
-bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected, bool enabled)
-{
-    if (MenuItem(label, shortcut, p_selected ? *p_selected : false, enabled))
-    {
-        if (p_selected)
-            *p_selected = !*p_selected;
-        return true;
-    }
-    return false;
-}
-
-// For the main menu bar, which cannot be moved, we honor g.Style.DisplaySafeAreaPadding to ensure text can be visible on a TV set.
-bool ImGui::BeginMainMenuBar()
-{
-    ImGuiContext& g = *GImGui;
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(g.Style.DisplaySafeAreaPadding.x, ImMax(g.Style.DisplaySafeAreaPadding.y - g.Style.FramePadding.y, 0.0f));
-    SetNextWindowPos(ImVec2(0.0f, 0.0f));
-    SetNextWindowSize(ImVec2(g.IO.DisplaySize.x, g.NextWindowData.MenuBarOffsetMinVal.y + g.FontBaseSize + g.Style.FramePadding.y));
-    PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
-    PushStyleVar(ImGuiStyleVar_WindowMinSize, ImVec2(0,0));
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_MenuBar;
-    bool is_open = Begin("##MainMenuBar", NULL, window_flags) && BeginMenuBar();
-    PopStyleVar(2);
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(0.0f, 0.0f);
-    if (!is_open)
-    {
-        End();
-        return false;
-    }
-    return true;
-}
-
-void ImGui::EndMainMenuBar()
-{
-    EndMenuBar();
-
-    // When the user has left the menu layer (typically: closed menus through activation of an item), we restore focus to the previous window
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow == g.NavWindow && g.NavLayer == 0)
-        FocusFrontMostActiveWindowIgnoringOne(g.NavWindow);
-
-    End();
-}
-
-bool ImGui::BeginMenuBar()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-    if (!(window->Flags & ImGuiWindowFlags_MenuBar))
-        return false;
-
-    IM_ASSERT(!window->DC.MenuBarAppending);
-    BeginGroup(); // Backup position on layer 0
-    PushID("##menubar");
-
-    // We don't clip with current window clipping rectangle as it is already set to the area below. However we clip with window full rect.
-    // We remove 1 worth of rounding to Max.x to that text in long menus and small windows don't tend to display over the lower-right rounded area, which looks particularly glitchy.
-    ImRect bar_rect = window->MenuBarRect();
-    ImRect clip_rect(ImFloor(bar_rect.Min.x + 0.5f), ImFloor(bar_rect.Min.y + window->WindowBorderSize + 0.5f), ImFloor(ImMax(bar_rect.Min.x, bar_rect.Max.x - window->WindowRounding) + 0.5f), ImFloor(bar_rect.Max.y + 0.5f));
-    clip_rect.ClipWith(window->OuterRectClipped);
-    PushClipRect(clip_rect.Min, clip_rect.Max, false);
-
-    window->DC.CursorPos = ImVec2(bar_rect.Min.x + window->DC.MenuBarOffset.x, bar_rect.Min.y + window->DC.MenuBarOffset.y);
-    window->DC.LayoutType = ImGuiLayoutType_Horizontal;
-    window->DC.NavLayerCurrent++;
-    window->DC.NavLayerCurrentMask <<= 1;
-    window->DC.MenuBarAppending = true;
-    AlignTextToFramePadding();
-    return true;
-}
-
-void ImGui::EndMenuBar()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-    ImGuiContext& g = *GImGui;
-
-    // Nav: When a move request within one of our child menu failed, capture the request to navigate among our siblings.
-    if (NavMoveRequestButNoResultYet() && (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right) && (g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
-    {
-        ImGuiWindow* nav_earliest_child = g.NavWindow;
-        while (nav_earliest_child->ParentWindow && (nav_earliest_child->ParentWindow->Flags & ImGuiWindowFlags_ChildMenu))
-            nav_earliest_child = nav_earliest_child->ParentWindow;
-        if (nav_earliest_child->ParentWindow == window && nav_earliest_child->DC.ParentLayoutType == ImGuiLayoutType_Horizontal && g.NavMoveRequestForward == ImGuiNavForward_None)
-        {
-            // To do so we claim focus back, restore NavId and then process the movement request for yet another frame.
-            // This involve a one-frame delay which isn't very problematic in this situation. We could remove it by scoring in advance for multiple window (probably not worth the hassle/cost)
-            IM_ASSERT(window->DC.NavLayerActiveMaskNext & 0x02); // Sanity check
-            FocusWindow(window);
-            SetNavIDWithRectRel(window->NavLastIds[1], 1, window->NavRectRel[1]);
-            g.NavLayer = 1;
-            g.NavDisableHighlight = true; // Hide highlight for the current frame so we don't see the intermediary selection.
-            g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
-            NavMoveRequestCancel();
-        }
-    }
-
-    IM_ASSERT(window->Flags & ImGuiWindowFlags_MenuBar);
-    IM_ASSERT(window->DC.MenuBarAppending);
-    PopClipRect();
-    PopID();
-    window->DC.MenuBarOffset.x = window->DC.CursorPos.x - window->MenuBarRect().Min.x; // Save horizontal position so next append can reuse it. This is kinda equivalent to a per-layer CursorPos.
-    window->DC.GroupStack.back().AdvanceCursor = false;
-    EndGroup(); // Restore position on layer 0
-    window->DC.LayoutType = ImGuiLayoutType_Vertical;
-    window->DC.NavLayerCurrent--;
-    window->DC.NavLayerCurrentMask >>= 1;
-    window->DC.MenuBarAppending = false;
-}
-
-bool ImGui::BeginMenu(const char* label, bool enabled)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    bool pressed;
-    bool menu_is_open = IsPopupOpen(id);
-    bool menuset_is_open = !(window->Flags & ImGuiWindowFlags_Popup) && (g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].OpenParentId == window->IDStack.back());
-    ImGuiWindow* backed_nav_window = g.NavWindow;
-    if (menuset_is_open)
-        g.NavWindow = window;  // Odd hack to allow hovering across menus of a same menu-set (otherwise we wouldn't be able to hover parent)
-
-    // The reference position stored in popup_pos will be used by Begin() to find a suitable position for the child menu (using FindBestWindowPosForPopup).
-    ImVec2 popup_pos, pos = window->DC.CursorPos;
-    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
-    {
-        // Menu inside an horizontal menu bar
-        // Selectable extend their highlight by half ItemSpacing in each direction.
-        // For ChildMenu, the popup position will be overwritten by the call to FindBestWindowPosForPopup() in Begin()
-        popup_pos = ImVec2(pos.x - window->WindowPadding.x, pos.y - style.FramePadding.y + window->MenuBarHeight());
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
-        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
-        float w = label_size.x;
-        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
-        PopStyleVar();
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
-    }
-    else
-    {
-        // Menu inside a menu
-        popup_pos = ImVec2(pos.x, pos.y - style.WindowPadding.y);
-        float w = window->MenuColumns.DeclColumns(label_size.x, 0.0f, (float)(int)(g.FontSize * 1.20f)); // Feedback to next frame
-        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
-        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | ImGuiSelectableFlags_DrawFillAvailWidth | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
-        if (!enabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-        RenderArrow(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.30f, 0.0f), ImGuiDir_Right);
-        if (!enabled) PopStyleColor();
-    }
-
-    const bool hovered = enabled && ItemHoverable(window->DC.LastItemRect, id);
-    if (menuset_is_open)
-        g.NavWindow = backed_nav_window;
-
-    bool want_open = false, want_close = false;
-    if (window->DC.LayoutType == ImGuiLayoutType_Vertical) // (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
-    {
-        // Implement http://bjk5.com/post/44698559168/breaking-down-amazons-mega-dropdown to avoid using timers, so menus feels more reactive.
-        bool moving_within_opened_triangle = false;
-        if (g.HoveredWindow == window && g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].ParentWindow == window && !(window->Flags & ImGuiWindowFlags_MenuBar))
-        {
-            if (ImGuiWindow* next_window = g.OpenPopupStack[g.CurrentPopupStack.Size].Window)
-            {
-                ImRect next_window_rect = next_window->Rect();
-                ImVec2 ta = g.IO.MousePos - g.IO.MouseDelta;
-                ImVec2 tb = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetTL() : next_window_rect.GetTR();
-                ImVec2 tc = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetBL() : next_window_rect.GetBR();
-                float extra = ImClamp(ImFabs(ta.x - tb.x) * 0.30f, 5.0f, 30.0f); // add a bit of extra slack.
-                ta.x += (window->Pos.x < next_window->Pos.x) ? -0.5f : +0.5f;   // to avoid numerical issues
-                tb.y = ta.y + ImMax((tb.y - extra) - ta.y, -100.0f);            // triangle is maximum 200 high to limit the slope and the bias toward large sub-menus // FIXME: Multiply by fb_scale?
-                tc.y = ta.y + ImMin((tc.y + extra) - ta.y, +100.0f);
-                moving_within_opened_triangle = ImTriangleContainsPoint(ta, tb, tc, g.IO.MousePos);
-                //window->DrawList->PushClipRectFullScreen(); window->DrawList->AddTriangleFilled(ta, tb, tc, moving_within_opened_triangle ? IM_COL32(0,128,0,128) : IM_COL32(128,0,0,128)); window->DrawList->PopClipRect(); // Debug
-            }
-        }
-
-        want_close = (menu_is_open && !hovered && g.HoveredWindow == window && g.HoveredIdPreviousFrame != 0 && g.HoveredIdPreviousFrame != id && !moving_within_opened_triangle);
-        want_open = (!menu_is_open && hovered && !moving_within_opened_triangle) || (!menu_is_open && hovered && pressed);
-
-        if (g.NavActivateId == id)
-        {
-            want_close = menu_is_open;
-            want_open = !menu_is_open;
-        }
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right) // Nav-Right to open
-        {
-            want_open = true;
-            NavMoveRequestCancel();
-        }
-    }
-    else
-    {
-        // Menu bar
-        if (menu_is_open && pressed && menuset_is_open) // Click an open menu again to close it
-        {
-            want_close = true;
-            want_open = menu_is_open = false;
-        }
-        else if (pressed || (hovered && menuset_is_open && !menu_is_open)) // First click to open, then hover to open others
-        {
-            want_open = true;
-        }
-        else if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Down) // Nav-Down to open
-        {
-            want_open = true;
-            NavMoveRequestCancel();
-        }
-    }
-
-    if (!enabled) // explicitly close if an open menu becomes disabled, facilitate users code a lot in pattern such as 'if (BeginMenu("options", has_object)) { ..use object.. }'
-        want_close = true;
-    if (want_close && IsPopupOpen(id))
-        ClosePopupToLevel(g.CurrentPopupStack.Size);
-
-    if (!menu_is_open && want_open && g.OpenPopupStack.Size > g.CurrentPopupStack.Size)
-    {
-        // Don't recycle same menu level in the same frame, first close the other menu and yield for a frame.
-        OpenPopup(label);
-        return false;
-    }
-
-    menu_is_open |= want_open;
-    if (want_open)
-        OpenPopup(label);
-
-    if (menu_is_open)
-    {
-        // Sub-menus are ChildWindow so that mouse can be hovering across them (otherwise top-most popup menu would steal focus and not allow hovering on parent menu)
-        SetNextWindowPos(popup_pos, ImGuiCond_Always);
-        ImGuiWindowFlags flags = ImGuiWindowFlags_ChildMenu | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoNavFocus;
-        if (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
-            flags |= ImGuiWindowFlags_ChildWindow;
-        menu_is_open = BeginPopupEx(id, flags); // menu_is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-    }
-
-    return menu_is_open;
-}
-
-void ImGui::EndMenu()
-{
-    // Nav: When a left move request _within our child menu_ failed, close the menu.
-    // A menu doesn't close itself because EndMenuBar() wants the catch the last Left<>Right inputs.
-    // However, it means that with the current code, a BeginMenu() from outside another menu or a menu-bar won't be closable with the Left direction.
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    if (g.NavWindow && g.NavWindow->ParentWindow == window && g.NavMoveDir == ImGuiDir_Left && NavMoveRequestButNoResultYet() && window->DC.LayoutType == ImGuiLayoutType_Vertical)
-    {
-        ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-        NavMoveRequestCancel();
-    }
-
-    EndPopup();
-}
-
-// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-void ImGui::ColorTooltip(const char* text, const float* col, ImGuiColorEditFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-
-    int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
-    BeginTooltipEx(0, true);
-
-    const char* text_end = text ? FindRenderedTextEnd(text, NULL) : text;
-    if (text_end > text)
-    {
-        TextUnformatted(text, text_end);
-        Separator();
-    }
-
-    ImVec2 sz(g.FontSize * 3 + g.Style.FramePadding.y * 2, g.FontSize * 3 + g.Style.FramePadding.y * 2);
-    ColorButton("##preview", ImVec4(col[0], col[1], col[2], col[3]), (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf)) | ImGuiColorEditFlags_NoTooltip, sz);
-    SameLine();
-    if (flags & ImGuiColorEditFlags_NoAlpha)
-        Text("#%02X%02X%02X\nR: %d, G: %d, B: %d\n(%.3f, %.3f, %.3f)", cr, cg, cb, cr, cg, cb, col[0], col[1], col[2]);
-    else
-        Text("#%02X%02X%02X%02X\nR:%d, G:%d, B:%d, A:%d\n(%.3f, %.3f, %.3f, %.3f)", cr, cg, cb, ca, cr, cg, cb, ca, col[0], col[1], col[2], col[3]);
-    EndTooltip();
-}
-
-static inline ImU32 ImAlphaBlendColor(ImU32 col_a, ImU32 col_b)
-{
-    float t = ((col_b >> IM_COL32_A_SHIFT) & 0xFF) / 255.f;
-    int r = ImLerp((int)(col_a >> IM_COL32_R_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_R_SHIFT) & 0xFF, t);
-    int g = ImLerp((int)(col_a >> IM_COL32_G_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_G_SHIFT) & 0xFF, t);
-    int b = ImLerp((int)(col_a >> IM_COL32_B_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_B_SHIFT) & 0xFF, t);
-    return IM_COL32(r, g, b, 0xFF);
-}
-
-// NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Caller currently responsible for avoiding that.
-// I spent a non reasonable amount of time trying to getting this right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and offsets, and eventually gave up... probably more reasonable to disable rounding alltogether.
-void ImGui::RenderColorRectWithAlphaCheckerboard(ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, int rounding_corners_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF)
-    {
-        ImU32 col_bg1 = GetColorU32(ImAlphaBlendColor(IM_COL32(204,204,204,255), col));
-        ImU32 col_bg2 = GetColorU32(ImAlphaBlendColor(IM_COL32(128,128,128,255), col));
-        window->DrawList->AddRectFilled(p_min, p_max, col_bg1, rounding, rounding_corners_flags);
-
-        int yi = 0;
-        for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++)
-        {
-            float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y);
-            if (y2 <= y1)
-                continue;
-            for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f)
-            {
-                float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x);
-                if (x2 <= x1)
-                    continue;
-                int rounding_corners_flags_cell = 0;
-                if (y1 <= p_min.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopRight; }
-                if (y2 >= p_max.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotRight; }
-                rounding_corners_flags_cell &= rounding_corners_flags;
-                window->DrawList->AddRectFilled(ImVec2(x1,y1), ImVec2(x2,y2), col_bg2, rounding_corners_flags_cell ? rounding : 0.0f, rounding_corners_flags_cell);
-            }
-        }
-    }
-    else
-    {
-        window->DrawList->AddRectFilled(p_min, p_max, col, rounding, rounding_corners_flags);
-    }
-}
-
-void ImGui::SetColorEditOptions(ImGuiColorEditFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    if ((flags & ImGuiColorEditFlags__InputsMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__InputsMask;
-    if ((flags & ImGuiColorEditFlags__DataTypeMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__DataTypeMask;
-    if ((flags & ImGuiColorEditFlags__PickerMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__PickerMask;
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__InputsMask)));   // Check only 1 option is selected
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__DataTypeMask))); // Check only 1 option is selected
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask)));   // Check only 1 option is selected
-    g.ColorEditOptions = flags;
-}
-
-// A little colored square. Return true when clicked.
-// FIXME: May want to display/ignore the alpha component in the color display? Yet show it in the tooltip.
-// 'desc_id' is not called 'label' because we don't display it next to the button, but only in the tooltip.
-bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFlags flags, ImVec2 size)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiID id = window->GetID(desc_id);
-    float default_size = GetFrameHeight();
-    if (size.x == 0.0f)
-        size.x = default_size;
-    if (size.y == 0.0f)
-        size.y = default_size;
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    if (flags & ImGuiColorEditFlags_NoAlpha)
-        flags &= ~(ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf);
-
-    ImVec4 col_without_alpha(col.x, col.y, col.z, 1.0f);
-    float grid_step = ImMin(size.x, size.y) / 2.99f;
-    float rounding = ImMin(g.Style.FrameRounding, grid_step * 0.5f);
-    ImRect bb_inner = bb;
-    float off = -0.75f; // The border (using Col_FrameBg) tends to look off when color is near-opaque and rounding is enabled. This offset seemed like a good middle ground to reduce those artifacts.
-    bb_inner.Expand(off);
-    if ((flags & ImGuiColorEditFlags_AlphaPreviewHalf) && col.w < 1.0f)
-    {
-        float mid_x = (float)(int)((bb_inner.Min.x + bb_inner.Max.x) * 0.5f + 0.5f);
-        RenderColorRectWithAlphaCheckerboard(ImVec2(bb_inner.Min.x + grid_step, bb_inner.Min.y), bb_inner.Max, GetColorU32(col), grid_step, ImVec2(-grid_step + off, off), rounding, ImDrawCornerFlags_TopRight| ImDrawCornerFlags_BotRight);
-        window->DrawList->AddRectFilled(bb_inner.Min, ImVec2(mid_x, bb_inner.Max.y), GetColorU32(col_without_alpha), rounding, ImDrawCornerFlags_TopLeft|ImDrawCornerFlags_BotLeft);
-    }
-    else
-    {
-        // Because GetColorU32() multiplies by the global style Alpha and we don't want to display a checkerboard if the source code had no alpha
-        ImVec4 col_source = (flags & ImGuiColorEditFlags_AlphaPreview) ? col : col_without_alpha;
-        if (col_source.w < 1.0f)
-            RenderColorRectWithAlphaCheckerboard(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), grid_step, ImVec2(off, off), rounding);
-        else
-            window->DrawList->AddRectFilled(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), rounding, ImDrawCornerFlags_All);
-    }
-    RenderNavHighlight(bb, id);
-    if (g.Style.FrameBorderSize > 0.0f)
-        RenderFrameBorder(bb.Min, bb.Max, rounding);
-    else
-        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), rounding); // Color button are often in need of some sort of border
-
-    // Drag and Drop Source
-    // NB: The ActiveId test is merely an optional micro-optimization, BeginDragDropSource() does the same test.
-    if (g.ActiveId == id && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropSource())
-    {
-        if (flags & ImGuiColorEditFlags_NoAlpha)
-            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F, &col, sizeof(float) * 3, ImGuiCond_Once);
-        else
-            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F, &col, sizeof(float) * 4, ImGuiCond_Once);
-        ColorButton(desc_id, col, flags);
-        SameLine();
-        TextUnformatted("Color");
-        EndDragDropSource();
-    }
-
-    // Tooltip
-    if (!(flags & ImGuiColorEditFlags_NoTooltip) && hovered)
-        ColorTooltip(desc_id, &col.x, flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf));
-
-    if (pressed)
-        MarkItemEdited(id);
-
-    return pressed;
-}
-
-bool ImGui::ColorEdit3(const char* label, float col[3], ImGuiColorEditFlags flags)
-{
-    return ColorEdit4(label, col, flags | ImGuiColorEditFlags_NoAlpha);
-}
-
-void ImGui::ColorEditOptionsPopup(const float* col, ImGuiColorEditFlags flags)
-{
-    bool allow_opt_inputs = !(flags & ImGuiColorEditFlags__InputsMask);
-    bool allow_opt_datatype = !(flags & ImGuiColorEditFlags__DataTypeMask);
-    if ((!allow_opt_inputs && !allow_opt_datatype) || !BeginPopup("context"))
-        return;
-    ImGuiContext& g = *GImGui;
-    ImGuiColorEditFlags opts = g.ColorEditOptions;
-    if (allow_opt_inputs)
-    {
-        if (RadioButton("RGB", (opts & ImGuiColorEditFlags_RGB) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_RGB;
-        if (RadioButton("HSV", (opts & ImGuiColorEditFlags_HSV) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HSV;
-        if (RadioButton("HEX", (opts & ImGuiColorEditFlags_HEX) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HEX;
-    }
-    if (allow_opt_datatype)
-    {
-        if (allow_opt_inputs) Separator();
-        if (RadioButton("0..255",     (opts & ImGuiColorEditFlags_Uint8) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Uint8;
-        if (RadioButton("0.00..1.00", (opts & ImGuiColorEditFlags_Float) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Float;
-    }
-
-    if (allow_opt_inputs || allow_opt_datatype)
-        Separator();
-    if (Button("Copy as..", ImVec2(-1,0)))
-        OpenPopup("Copy");
-    if (BeginPopup("Copy"))
-    {
-        int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
-        char buf[64];
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%.3ff, %.3ff, %.3ff, %.3ff)", col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%d,%d,%d,%d)", cr, cg, cb, ca);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        if (flags & ImGuiColorEditFlags_NoAlpha)
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X", cr, cg, cb);
-        else
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X%02X", cr, cg, cb, ca);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        EndPopup();
-    }
-
-    g.ColorEditOptions = opts;
-    EndPopup();
-}
-
-void ImGui::ColorPickerOptionsPopup(const float* ref_col, ImGuiColorEditFlags flags)
-{
-    bool allow_opt_picker = !(flags & ImGuiColorEditFlags__PickerMask);
-    bool allow_opt_alpha_bar = !(flags & ImGuiColorEditFlags_NoAlpha) && !(flags & ImGuiColorEditFlags_AlphaBar);
-    if ((!allow_opt_picker && !allow_opt_alpha_bar) || !ImGui::BeginPopup("context"))
-        return;
-    ImGuiContext& g = *GImGui;
-    if (allow_opt_picker)
-    {
-        ImVec2 picker_size(g.FontSize * 8, ImMax(g.FontSize * 8 - (ImGui::GetFrameHeight() + g.Style.ItemInnerSpacing.x), 1.0f)); // FIXME: Picker size copied from main picker function
-        ImGui::PushItemWidth(picker_size.x);
-        for (int picker_type = 0; picker_type < 2; picker_type++)
-        {
-            // Draw small/thumbnail version of each picker type (over an invisible button for selection)
-            if (picker_type > 0) ImGui::Separator();
-            ImGui::PushID(picker_type);
-            ImGuiColorEditFlags picker_flags = ImGuiColorEditFlags_NoInputs|ImGuiColorEditFlags_NoOptions|ImGuiColorEditFlags_NoLabel|ImGuiColorEditFlags_NoSidePreview|(flags & ImGuiColorEditFlags_NoAlpha);
-            if (picker_type == 0) picker_flags |= ImGuiColorEditFlags_PickerHueBar;
-            if (picker_type == 1) picker_flags |= ImGuiColorEditFlags_PickerHueWheel;
-            ImVec2 backup_pos = ImGui::GetCursorScreenPos();
-            if (ImGui::Selectable("##selectable", false, 0, picker_size)) // By default, Selectable() is closing popup
-                g.ColorEditOptions = (g.ColorEditOptions & ~ImGuiColorEditFlags__PickerMask) | (picker_flags & ImGuiColorEditFlags__PickerMask);
-            ImGui::SetCursorScreenPos(backup_pos);
-            ImVec4 dummy_ref_col;
-            memcpy(&dummy_ref_col.x, ref_col, sizeof(float) * (picker_flags & ImGuiColorEditFlags_NoAlpha ? 3 : 4));
-            ImGui::ColorPicker4("##dummypicker", &dummy_ref_col.x, picker_flags);
-            ImGui::PopID();
-        }
-        ImGui::PopItemWidth();
-    }
-    if (allow_opt_alpha_bar)
-    {
-        if (allow_opt_picker) ImGui::Separator();
-        ImGui::CheckboxFlags("Alpha Bar", (unsigned int*)&g.ColorEditOptions, ImGuiColorEditFlags_AlphaBar);
-    }
-    ImGui::EndPopup();
-}
-
-// Edit colors components (each component in 0.0f..1.0f range).
-// See enum ImGuiColorEditFlags_ for available options. e.g. Only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-// With typical options: Left-click on colored square to open color picker. Right-click to open option menu. CTRL-Click over input fields to edit them and TAB to go to next item.
-bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float square_sz = GetFrameHeight();
-    const float w_extra = (flags & ImGuiColorEditFlags_NoSmallPreview) ? 0.0f : (square_sz + style.ItemInnerSpacing.x);
-    const float w_items_all = CalcItemWidth() - w_extra;
-    const char* label_display_end = FindRenderedTextEnd(label);
-
-    BeginGroup();
-    PushID(label);
-
-    // If we're not showing any slider there's no point in doing any HSV conversions
-    const ImGuiColorEditFlags flags_untouched = flags;
-    if (flags & ImGuiColorEditFlags_NoInputs)
-        flags = (flags & (~ImGuiColorEditFlags__InputsMask)) | ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_NoOptions;
-
-    // Context menu: display and modify options (before defaults are applied)
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-        ColorEditOptionsPopup(col, flags);
-
-    // Read stored options
-    if (!(flags & ImGuiColorEditFlags__InputsMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__InputsMask);
-    if (!(flags & ImGuiColorEditFlags__DataTypeMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__DataTypeMask);
-    if (!(flags & ImGuiColorEditFlags__PickerMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__PickerMask);
-    flags |= (g.ColorEditOptions & ~(ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask));
-
-    const bool alpha = (flags & ImGuiColorEditFlags_NoAlpha) == 0;
-    const bool hdr = (flags & ImGuiColorEditFlags_HDR) != 0;
-    const int components = alpha ? 4 : 3;
-
-    // Convert to the formats we need
-    float f[4] = { col[0], col[1], col[2], alpha ? col[3] : 1.0f };
-    if (flags & ImGuiColorEditFlags_HSV)
-        ColorConvertRGBtoHSV(f[0], f[1], f[2], f[0], f[1], f[2]);
-    int i[4] = { IM_F32_TO_INT8_UNBOUND(f[0]), IM_F32_TO_INT8_UNBOUND(f[1]), IM_F32_TO_INT8_UNBOUND(f[2]), IM_F32_TO_INT8_UNBOUND(f[3]) };
-
-    bool value_changed = false;
-    bool value_changed_as_float = false;
-
-    if ((flags & (ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_HSV)) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        // RGB/HSV 0..255 Sliders
-        const float w_item_one  = ImMax(1.0f, (float)(int)((w_items_all - (style.ItemInnerSpacing.x) * (components-1)) / (float)components));
-        const float w_item_last = ImMax(1.0f, (float)(int)(w_items_all - (w_item_one + style.ItemInnerSpacing.x) * (components-1)));
-
-        const bool hide_prefix = (w_item_one <= CalcTextSize((flags & ImGuiColorEditFlags_Float) ? "M:0.000" : "M:000").x);
-        const char* ids[4] = { "##X", "##Y", "##Z", "##W" };
-        const char* fmt_table_int[3][4] =
-        {
-            {   "%3d",   "%3d",   "%3d",   "%3d" }, // Short display
-            { "R:%3d", "G:%3d", "B:%3d", "A:%3d" }, // Long display for RGBA
-            { "H:%3d", "S:%3d", "V:%3d", "A:%3d" }  // Long display for HSVA
-        };
-        const char* fmt_table_float[3][4] =
-        {
-            {   "%0.3f",   "%0.3f",   "%0.3f",   "%0.3f" }, // Short display
-            { "R:%0.3f", "G:%0.3f", "B:%0.3f", "A:%0.3f" }, // Long display for RGBA
-            { "H:%0.3f", "S:%0.3f", "V:%0.3f", "A:%0.3f" }  // Long display for HSVA
-        };
-        const int fmt_idx = hide_prefix ? 0 : (flags & ImGuiColorEditFlags_HSV) ? 2 : 1;
-
-        PushItemWidth(w_item_one);
-        for (int n = 0; n < components; n++)
-        {
-            if (n > 0)
-                SameLine(0, style.ItemInnerSpacing.x);
-            if (n + 1 == components)
-                PushItemWidth(w_item_last);
-            if (flags & ImGuiColorEditFlags_Float)
-                value_changed = value_changed_as_float = value_changed | DragFloat(ids[n], &f[n], 1.0f/255.0f, 0.0f, hdr ? 0.0f : 1.0f, fmt_table_float[fmt_idx][n]);
-            else
-                value_changed |= DragInt(ids[n], &i[n], 1.0f, 0, hdr ? 0 : 255, fmt_table_int[fmt_idx][n]);
-            if (!(flags & ImGuiColorEditFlags_NoOptions))
-                OpenPopupOnItemClick("context");
-        }
-        PopItemWidth();
-        PopItemWidth();
-    }
-    else if ((flags & ImGuiColorEditFlags_HEX) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        // RGB Hexadecimal Input
-        char buf[64];
-        if (alpha)
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255), ImClamp(i[3],0,255));
-        else
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255));
-        PushItemWidth(w_items_all);
-        if (InputText("##Text", buf, IM_ARRAYSIZE(buf), ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase))
-        {
-            value_changed = true;
-            char* p = buf;
-            while (*p == '#' || ImCharIsBlankA(*p))
-                p++;
-            i[0] = i[1] = i[2] = i[3] = 0;
-            if (alpha)
-                sscanf(p, "%02X%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2], (unsigned int*)&i[3]); // Treat at unsigned (%X is unsigned)
-            else
-                sscanf(p, "%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2]);
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-        PopItemWidth();
-    }
-
-    ImGuiWindow* picker_active_window = NULL;
-    if (!(flags & ImGuiColorEditFlags_NoSmallPreview))
-    {
-        if (!(flags & ImGuiColorEditFlags_NoInputs))
-            SameLine(0, style.ItemInnerSpacing.x);
-
-        const ImVec4 col_v4(col[0], col[1], col[2], alpha ? col[3] : 1.0f);
-        if (ColorButton("##ColorButton", col_v4, flags))
-        {
-            if (!(flags & ImGuiColorEditFlags_NoPicker))
-            {
-                // Store current color and open a picker
-                g.ColorPickerRef = col_v4;
-                OpenPopup("picker");
-                SetNextWindowPos(window->DC.LastItemRect.GetBL() + ImVec2(-1,style.ItemSpacing.y));
-            }
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-
-        if (BeginPopup("picker"))
-        {
-            picker_active_window = g.CurrentWindow;
-            if (label != label_display_end)
-            {
-                TextUnformatted(label, label_display_end);
-                Separator();
-            }
-            ImGuiColorEditFlags picker_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaBar;
-            ImGuiColorEditFlags picker_flags = (flags_untouched & picker_flags_to_forward) | ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags_NoLabel | ImGuiColorEditFlags_AlphaPreviewHalf;
-            PushItemWidth(square_sz * 12.0f); // Use 256 + bar sizes?
-            value_changed |= ColorPicker4("##picker", col, picker_flags, &g.ColorPickerRef.x);
-            PopItemWidth();
-            EndPopup();
-        }
-    }
-
-    if (label != label_display_end && !(flags & ImGuiColorEditFlags_NoLabel))
-    {
-        SameLine(0, style.ItemInnerSpacing.x);
-        TextUnformatted(label, label_display_end);
-    }
-
-    // Convert back
-    if (picker_active_window == NULL)
-    {
-        if (!value_changed_as_float)
-            for (int n = 0; n < 4; n++)
-                f[n] = i[n] / 255.0f;
-        if (flags & ImGuiColorEditFlags_HSV)
-            ColorConvertHSVtoRGB(f[0], f[1], f[2], f[0], f[1], f[2]);
-        if (value_changed)
-        {
-            col[0] = f[0];
-            col[1] = f[1];
-            col[2] = f[2];
-            if (alpha)
-                col[3] = f[3];
-        }
-    }
-
-    PopID();
-    EndGroup();
-
-    // Drag and Drop Target
-    // NB: The flag test is merely an optional micro-optimization, BeginDragDropTarget() does the same test.
-    if ((window->DC.LastItemStatusFlags & ImGuiItemStatusFlags_HoveredRect) && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropTarget())
-    {
-        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F))
-        {
-            memcpy((float*)col, payload->Data, sizeof(float) * 3);
-            value_changed = true;
-        }
-        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F))
-        {
-            memcpy((float*)col, payload->Data, sizeof(float) * components);
-            value_changed = true;
-        }
-        EndDragDropTarget();
-    }
-
-    // When picker is being actively used, use its active id so IsItemActive() will function on ColorEdit4().
-    if (picker_active_window && g.ActiveId != 0 && g.ActiveIdWindow == picker_active_window)
-        window->DC.LastItemId = g.ActiveId;
-
-    if (value_changed)
-        MarkItemEdited(window->DC.LastItemId);
-
-    return value_changed;
-}
-
-bool ImGui::ColorPicker3(const char* label, float col[3], ImGuiColorEditFlags flags)
-{
-    float col4[4] = { col[0], col[1], col[2], 1.0f };
-    if (!ColorPicker4(label, col4, flags | ImGuiColorEditFlags_NoAlpha))
-        return false;
-    col[0] = col4[0]; col[1] = col4[1]; col[2] = col4[2];
-    return true;
-}
-
-static void RenderArrowsForVerticalBar(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, float bar_w)
-{
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x + 1,         pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Right, IM_COL32_BLACK);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x,             pos.y), half_sz,                              ImGuiDir_Right, IM_COL32_WHITE);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x - 1, pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Left,  IM_COL32_BLACK);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x,     pos.y), half_sz,                              ImGuiDir_Left,  IM_COL32_WHITE);
-}
-
-// ColorPicker
-// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-// FIXME: we adjust the big color square height based on item width, which may cause a flickering feedback loop (if automatic height makes a vertical scrollbar appears, affecting automatic width..)
-bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags flags, const float* ref_col)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    ImDrawList* draw_list = window->DrawList;
-
-    ImGuiStyle& style = g.Style;
-    ImGuiIO& io = g.IO;
-
-    PushID(label);
-    BeginGroup();
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-        flags |= ImGuiColorEditFlags_NoSmallPreview;
-
-    // Context menu: display and store options.
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-
-    // Read stored options
-    if (!(flags & ImGuiColorEditFlags__PickerMask))
-        flags |= ((g.ColorEditOptions & ImGuiColorEditFlags__PickerMask) ? g.ColorEditOptions : ImGuiColorEditFlags__OptionsDefault) & ImGuiColorEditFlags__PickerMask;
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask))); // Check that only 1 is selected
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags_AlphaBar);
-
-    // Setup
-    int components = (flags & ImGuiColorEditFlags_NoAlpha) ? 3 : 4;
-    bool alpha_bar = (flags & ImGuiColorEditFlags_AlphaBar) && !(flags & ImGuiColorEditFlags_NoAlpha);
-    ImVec2 picker_pos = window->DC.CursorPos;
-    float square_sz = GetFrameHeight();
-    float bars_width = square_sz; // Arbitrary smallish width of Hue/Alpha picking bars
-    float sv_picker_size = ImMax(bars_width * 1, CalcItemWidth() - (alpha_bar ? 2 : 1) * (bars_width + style.ItemInnerSpacing.x)); // Saturation/Value picking box
-    float bar0_pos_x = picker_pos.x + sv_picker_size + style.ItemInnerSpacing.x;
-    float bar1_pos_x = bar0_pos_x + bars_width + style.ItemInnerSpacing.x;
-    float bars_triangles_half_sz = (float)(int)(bars_width * 0.20f);
-
-    float backup_initial_col[4];
-    memcpy(backup_initial_col, col, components * sizeof(float));
-
-    float wheel_thickness = sv_picker_size * 0.08f;
-    float wheel_r_outer = sv_picker_size * 0.50f;
-    float wheel_r_inner = wheel_r_outer - wheel_thickness;
-    ImVec2 wheel_center(picker_pos.x + (sv_picker_size + bars_width)*0.5f, picker_pos.y + sv_picker_size*0.5f);
-
-    // Note: the triangle is displayed rotated with triangle_pa pointing to Hue, but most coordinates stays unrotated for logic.
-    float triangle_r = wheel_r_inner - (int)(sv_picker_size * 0.027f);
-    ImVec2 triangle_pa = ImVec2(triangle_r, 0.0f); // Hue point.
-    ImVec2 triangle_pb = ImVec2(triangle_r * -0.5f, triangle_r * -0.866025f); // Black point.
-    ImVec2 triangle_pc = ImVec2(triangle_r * -0.5f, triangle_r * +0.866025f); // White point.
-
-    float H,S,V;
-    ColorConvertRGBtoHSV(col[0], col[1], col[2], H, S, V);
-
-    bool value_changed = false, value_changed_h = false, value_changed_sv = false;
-
-    PushItemFlag(ImGuiItemFlags_NoNav, true);
-    if (flags & ImGuiColorEditFlags_PickerHueWheel)
-    {
-        // Hue wheel + SV triangle logic
-        InvisibleButton("hsv", ImVec2(sv_picker_size + style.ItemInnerSpacing.x + bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            ImVec2 initial_off = g.IO.MouseClickedPos[0] - wheel_center;
-            ImVec2 current_off = g.IO.MousePos - wheel_center;
-            float initial_dist2 = ImLengthSqr(initial_off);
-            if (initial_dist2 >= (wheel_r_inner-1)*(wheel_r_inner-1) && initial_dist2 <= (wheel_r_outer+1)*(wheel_r_outer+1))
-            {
-                // Interactive with Hue wheel
-                H = ImAtan2(current_off.y, current_off.x) / IM_PI*0.5f;
-                if (H < 0.0f)
-                    H += 1.0f;
-                value_changed = value_changed_h = true;
-            }
-            float cos_hue_angle = ImCos(-H * 2.0f * IM_PI);
-            float sin_hue_angle = ImSin(-H * 2.0f * IM_PI);
-            if (ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, ImRotate(initial_off, cos_hue_angle, sin_hue_angle)))
-            {
-                // Interacting with SV triangle
-                ImVec2 current_off_unrotated = ImRotate(current_off, cos_hue_angle, sin_hue_angle);
-                if (!ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated))
-                    current_off_unrotated = ImTriangleClosestPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated);
-                float uu, vv, ww;
-                ImTriangleBarycentricCoords(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated, uu, vv, ww);
-                V = ImClamp(1.0f - vv, 0.0001f, 1.0f);
-                S = ImClamp(uu / V, 0.0001f, 1.0f);
-                value_changed = value_changed_sv = true;
-            }
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-    }
-    else if (flags & ImGuiColorEditFlags_PickerHueBar)
-    {
-        // SV rectangle logic
-        InvisibleButton("sv", ImVec2(sv_picker_size, sv_picker_size));
-        if (IsItemActive())
-        {
-            S = ImSaturate((io.MousePos.x - picker_pos.x) / (sv_picker_size-1));
-            V = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = value_changed_sv = true;
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-
-        // Hue bar logic
-        SetCursorScreenPos(ImVec2(bar0_pos_x, picker_pos.y));
-        InvisibleButton("hue", ImVec2(bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            H = ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = value_changed_h = true;
-        }
-    }
-
-    // Alpha bar logic
-    if (alpha_bar)
-    {
-        SetCursorScreenPos(ImVec2(bar1_pos_x, picker_pos.y));
-        InvisibleButton("alpha", ImVec2(bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            col[3] = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = true;
-        }
-    }
-    PopItemFlag(); // ImGuiItemFlags_NoNav
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-    {
-        SameLine(0, style.ItemInnerSpacing.x);
-        BeginGroup();
-    }
-
-    if (!(flags & ImGuiColorEditFlags_NoLabel))
-    {
-        const char* label_display_end = FindRenderedTextEnd(label);
-        if (label != label_display_end)
-        {
-            if ((flags & ImGuiColorEditFlags_NoSidePreview))
-                SameLine(0, style.ItemInnerSpacing.x);
-            TextUnformatted(label, label_display_end);
-        }
-    }
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-    {
-        PushItemFlag(ImGuiItemFlags_NoNavDefaultFocus, true);
-        ImVec4 col_v4(col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
-        if ((flags & ImGuiColorEditFlags_NoLabel))
-            Text("Current");
-        ColorButton("##current", col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2));
-        if (ref_col != NULL)
-        {
-            Text("Original");
-            ImVec4 ref_col_v4(ref_col[0], ref_col[1], ref_col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : ref_col[3]);
-            if (ColorButton("##original", ref_col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2)))
-            {
-                memcpy(col, ref_col, components * sizeof(float));
-                value_changed = true;
-            }
-        }
-        PopItemFlag();
-        EndGroup();
-    }
-
-    // Convert back color to RGB
-    if (value_changed_h || value_changed_sv)
-        ColorConvertHSVtoRGB(H >= 1.0f ? H - 10 * 1e-6f : H, S > 0.0f ? S : 10*1e-6f, V > 0.0f ? V : 1e-6f, col[0], col[1], col[2]);
-
-    // R,G,B and H,S,V slider color editor
-    bool value_changed_fix_hue_wrap = false;
-    if ((flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        PushItemWidth((alpha_bar ? bar1_pos_x : bar0_pos_x) + bars_width - picker_pos.x);
-        ImGuiColorEditFlags sub_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoOptions | ImGuiColorEditFlags_NoSmallPreview | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf;
-        ImGuiColorEditFlags sub_flags = (flags & sub_flags_to_forward) | ImGuiColorEditFlags_NoPicker;
-        if (flags & ImGuiColorEditFlags_RGB || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            if (ColorEdit4("##rgb", col, sub_flags | ImGuiColorEditFlags_RGB))
-            {
-                // FIXME: Hackily differenciating using the DragInt (ActiveId != 0 && !ActiveIdAllowOverlap) vs. using the InputText or DropTarget.
-                // For the later we don't want to run the hue-wrap canceling code. If you are well versed in HSV picker please provide your input! (See #2050)
-                value_changed_fix_hue_wrap = (g.ActiveId != 0 && !g.ActiveIdAllowOverlap);
-                value_changed = true;
-            }
-        if (flags & ImGuiColorEditFlags_HSV || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            value_changed |= ColorEdit4("##hsv", col, sub_flags | ImGuiColorEditFlags_HSV);
-        if (flags & ImGuiColorEditFlags_HEX || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            value_changed |= ColorEdit4("##hex", col, sub_flags | ImGuiColorEditFlags_HEX);
-        PopItemWidth();
-    }
-
-    // Try to cancel hue wrap (after ColorEdit4 call), if any
-    if (value_changed_fix_hue_wrap)
-    {
-        float new_H, new_S, new_V;
-        ColorConvertRGBtoHSV(col[0], col[1], col[2], new_H, new_S, new_V);
-        if (new_H <= 0 && H > 0)
-        {
-            if (new_V <= 0 && V != new_V)
-                ColorConvertHSVtoRGB(H, S, new_V <= 0 ? V * 0.5f : new_V, col[0], col[1], col[2]);
-            else if (new_S <= 0)
-                ColorConvertHSVtoRGB(H, new_S <= 0 ? S * 0.5f : new_S, new_V, col[0], col[1], col[2]);
-        }
-    }
-
-    ImVec4 hue_color_f(1, 1, 1, 1); ColorConvertHSVtoRGB(H, 1, 1, hue_color_f.x, hue_color_f.y, hue_color_f.z);
-    ImU32 hue_color32 = ColorConvertFloat4ToU32(hue_color_f);
-    ImU32 col32_no_alpha = ColorConvertFloat4ToU32(ImVec4(col[0], col[1], col[2], 1.0f));
-
-    const ImU32 hue_colors[6+1] = { IM_COL32(255,0,0,255), IM_COL32(255,255,0,255), IM_COL32(0,255,0,255), IM_COL32(0,255,255,255), IM_COL32(0,0,255,255), IM_COL32(255,0,255,255), IM_COL32(255,0,0,255) };
-    ImVec2 sv_cursor_pos;
-
-    if (flags & ImGuiColorEditFlags_PickerHueWheel)
-    {
-        // Render Hue Wheel
-        const float aeps = 1.5f / wheel_r_outer; // Half a pixel arc length in radians (2pi cancels out).
-        const int segment_per_arc = ImMax(4, (int)wheel_r_outer / 12);
-        for (int n = 0; n < 6; n++)
-        {
-            const float a0 = (n)     /6.0f * 2.0f * IM_PI - aeps;
-            const float a1 = (n+1.0f)/6.0f * 2.0f * IM_PI + aeps;
-            const int vert_start_idx = draw_list->VtxBuffer.Size;
-            draw_list->PathArcTo(wheel_center, (wheel_r_inner + wheel_r_outer)*0.5f, a0, a1, segment_per_arc);
-            draw_list->PathStroke(IM_COL32_WHITE, false, wheel_thickness);
-            const int vert_end_idx = draw_list->VtxBuffer.Size;
-
-            // Paint colors over existing vertices
-            ImVec2 gradient_p0(wheel_center.x + ImCos(a0) * wheel_r_inner, wheel_center.y + ImSin(a0) * wheel_r_inner);
-            ImVec2 gradient_p1(wheel_center.x + ImCos(a1) * wheel_r_inner, wheel_center.y + ImSin(a1) * wheel_r_inner);
-            ShadeVertsLinearColorGradientKeepAlpha(draw_list, vert_start_idx, vert_end_idx, gradient_p0, gradient_p1, hue_colors[n], hue_colors[n+1]);
-        }
-
-        // Render Cursor + preview on Hue Wheel
-        float cos_hue_angle = ImCos(H * 2.0f * IM_PI);
-        float sin_hue_angle = ImSin(H * 2.0f * IM_PI);
-        ImVec2 hue_cursor_pos(wheel_center.x + cos_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f, wheel_center.y + sin_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f);
-        float hue_cursor_rad = value_changed_h ? wheel_thickness * 0.65f : wheel_thickness * 0.55f;
-        int hue_cursor_segments = ImClamp((int)(hue_cursor_rad / 1.4f), 9, 32);
-        draw_list->AddCircleFilled(hue_cursor_pos, hue_cursor_rad, hue_color32, hue_cursor_segments);
-        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad+1, IM_COL32(128,128,128,255), hue_cursor_segments);
-        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad, IM_COL32_WHITE, hue_cursor_segments);
-
-        // Render SV triangle (rotated according to hue)
-        ImVec2 tra = wheel_center + ImRotate(triangle_pa, cos_hue_angle, sin_hue_angle);
-        ImVec2 trb = wheel_center + ImRotate(triangle_pb, cos_hue_angle, sin_hue_angle);
-        ImVec2 trc = wheel_center + ImRotate(triangle_pc, cos_hue_angle, sin_hue_angle);
-        ImVec2 uv_white = GetFontTexUvWhitePixel();
-        draw_list->PrimReserve(6, 6);
-        draw_list->PrimVtx(tra, uv_white, hue_color32);
-        draw_list->PrimVtx(trb, uv_white, hue_color32);
-        draw_list->PrimVtx(trc, uv_white, IM_COL32_WHITE);
-        draw_list->PrimVtx(tra, uv_white, IM_COL32_BLACK_TRANS);
-        draw_list->PrimVtx(trb, uv_white, IM_COL32_BLACK);
-        draw_list->PrimVtx(trc, uv_white, IM_COL32_BLACK_TRANS);
-        draw_list->AddTriangle(tra, trb, trc, IM_COL32(128,128,128,255), 1.5f);
-        sv_cursor_pos = ImLerp(ImLerp(trc, tra, ImSaturate(S)), trb, ImSaturate(1 - V));
-    }
-    else if (flags & ImGuiColorEditFlags_PickerHueBar)
-    {
-        // Render SV Square
-        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_WHITE, hue_color32, hue_color32, IM_COL32_WHITE);
-        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_BLACK_TRANS, IM_COL32_BLACK_TRANS, IM_COL32_BLACK, IM_COL32_BLACK);
-        RenderFrameBorder(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), 0.0f);
-        sv_cursor_pos.x = ImClamp((float)(int)(picker_pos.x + ImSaturate(S)     * sv_picker_size + 0.5f), picker_pos.x + 2, picker_pos.x + sv_picker_size - 2); // Sneakily prevent the circle to stick out too much
-        sv_cursor_pos.y = ImClamp((float)(int)(picker_pos.y + ImSaturate(1 - V) * sv_picker_size + 0.5f), picker_pos.y + 2, picker_pos.y + sv_picker_size - 2);
-
-        // Render Hue Bar
-        for (int i = 0; i < 6; ++i)
-            draw_list->AddRectFilledMultiColor(ImVec2(bar0_pos_x, picker_pos.y + i * (sv_picker_size / 6)), ImVec2(bar0_pos_x + bars_width, picker_pos.y + (i + 1) * (sv_picker_size / 6)), hue_colors[i], hue_colors[i], hue_colors[i + 1], hue_colors[i + 1]);
-        float bar0_line_y = (float)(int)(picker_pos.y + H * sv_picker_size + 0.5f);
-        RenderFrameBorder(ImVec2(bar0_pos_x, picker_pos.y), ImVec2(bar0_pos_x + bars_width, picker_pos.y + sv_picker_size), 0.0f);
-        RenderArrowsForVerticalBar(draw_list, ImVec2(bar0_pos_x - 1, bar0_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
-    }
-
-    // Render cursor/preview circle (clamp S/V within 0..1 range because floating points colors may lead HSV values to be out of range)
-    float sv_cursor_rad = value_changed_sv ? 10.0f : 6.0f;
-    draw_list->AddCircleFilled(sv_cursor_pos, sv_cursor_rad, col32_no_alpha, 12);
-    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad+1, IM_COL32(128,128,128,255), 12);
-    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad, IM_COL32_WHITE, 12);
-
-    // Render alpha bar
-    if (alpha_bar)
-    {
-        float alpha = ImSaturate(col[3]);
-        ImRect bar1_bb(bar1_pos_x, picker_pos.y, bar1_pos_x + bars_width, picker_pos.y + sv_picker_size);
-        RenderColorRectWithAlphaCheckerboard(bar1_bb.Min, bar1_bb.Max, IM_COL32(0,0,0,0), bar1_bb.GetWidth() / 2.0f, ImVec2(0.0f, 0.0f));
-        draw_list->AddRectFilledMultiColor(bar1_bb.Min, bar1_bb.Max, col32_no_alpha, col32_no_alpha, col32_no_alpha & ~IM_COL32_A_MASK, col32_no_alpha & ~IM_COL32_A_MASK);
-        float bar1_line_y = (float)(int)(picker_pos.y + (1.0f - alpha) * sv_picker_size + 0.5f);
-        RenderFrameBorder(bar1_bb.Min, bar1_bb.Max, 0.0f);
-        RenderArrowsForVerticalBar(draw_list, ImVec2(bar1_pos_x - 1, bar1_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
-    }
-
-    EndGroup();
-
-    if (value_changed && memcmp(backup_initial_col, col, components * sizeof(float)) == 0)
-        value_changed = false;
-    if (value_changed)
-        MarkItemEdited(window->DC.LastItemId);
-
-    PopID();
-
-    return value_changed;
-}
-
 // Horizontal/vertical separating line
 void ImGui::Separator()
 {
@@ -13082,7 +6107,7 @@
     window->DrawList->AddLine(bb.Min, ImVec2(bb.Max.x,bb.Min.y), GetColorU32(ImGuiCol_Separator));
 
     if (g.LogEnabled)
-            LogRenderedText(NULL, IM_NEWLINE "--------------------------------");
+        LogRenderedText(NULL, IM_NEWLINE "--------------------------------");
 
     if (window->DC.ColumnsSet)
     {
@@ -13309,6 +6334,1457 @@
     window->DC.LayoutType = backup_layout_type;
 }
 
+void ImGui::Indent(float indent_w)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    window->DC.Indent.x += (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
+    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
+}
+
+void ImGui::Unindent(float indent_w)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    window->DC.Indent.x -= (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
+    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
+}
+
+//-----------------------------------------------------------------------------
+// TOOLTIPS
+//-----------------------------------------------------------------------------
+
+void ImGui::BeginTooltip()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.DragDropWithinSourceOrTarget)
+    {
+        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
+        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
+        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
+        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
+        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
+        SetNextWindowPos(tooltip_pos);
+        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
+        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
+        BeginTooltipEx(0, true);
+    }
+    else
+    {
+        BeginTooltipEx(0, false);
+    }
+}
+
+// Not exposed publicly as BeginTooltip() because bool parameters are evil. Let's see if other needs arise first.
+void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, bool override_previous_tooltip)
+{
+    ImGuiContext& g = *GImGui;
+    char window_name[16];
+    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
+    if (override_previous_tooltip)
+        if (ImGuiWindow* window = FindWindowByName(window_name))
+            if (window->Active)
+            {
+                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
+                window->Hidden = true;
+                window->HiddenFramesRegular = 1;
+                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
+            }
+    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoInputs|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoNav;
+    Begin(window_name, NULL, flags | extra_flags);
+}
+
+void ImGui::EndTooltip()
+{
+    IM_ASSERT(GetCurrentWindowRead()->Flags & ImGuiWindowFlags_Tooltip);   // Mismatched BeginTooltip()/EndTooltip() calls
+    End();
+}
+
+void ImGui::SetTooltipV(const char* fmt, va_list args)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.DragDropWithinSourceOrTarget)
+        BeginTooltip();
+    else
+        BeginTooltipEx(0, true);
+    TextV(fmt, args);
+    EndTooltip();
+}
+
+void ImGui::SetTooltip(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    SetTooltipV(fmt, args);
+    va_end(args);
+}
+
+//-----------------------------------------------------------------------------
+// POPUPS
+//-----------------------------------------------------------------------------
+
+bool ImGui::IsPopupOpen(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == id;
+}
+
+bool ImGui::IsPopupOpen(const char* str_id)
+{
+    ImGuiContext& g = *GImGui;
+    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == g.CurrentWindow->GetID(str_id);
+}
+
+ImGuiWindow* ImGui::GetFrontMostPopupModal()
+{
+    ImGuiContext& g = *GImGui;
+    for (int n = g.OpenPopupStack.Size-1; n >= 0; n--)
+        if (ImGuiWindow* popup = g.OpenPopupStack.Data[n].Window)
+            if (popup->Flags & ImGuiWindowFlags_Modal)
+                return popup;
+    return NULL;
+}
+
+void ImGui::OpenPopup(const char* str_id)
+{
+    ImGuiContext& g = *GImGui;
+    OpenPopupEx(g.CurrentWindow->GetID(str_id));
+}
+
+// Mark popup as open (toggle toward open state).
+// Popups are closed when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
+// Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
+// One open popup per level of the popup hierarchy (NB: when assigning we reset the Window member of ImGuiPopupRef to NULL)
+void ImGui::OpenPopupEx(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* parent_window = g.CurrentWindow;
+    int current_stack_size = g.CurrentPopupStack.Size;
+    ImGuiPopupRef popup_ref; // Tagged as new ref as Window will be set back to NULL if we write this into OpenPopupStack.
+    popup_ref.PopupId = id;
+    popup_ref.Window = NULL;
+    popup_ref.ParentWindow = parent_window;
+    popup_ref.OpenFrameCount = g.FrameCount;
+    popup_ref.OpenParentId = parent_window->IDStack.back();
+    popup_ref.OpenMousePos = g.IO.MousePos;
+    popup_ref.OpenPopupPos = NavCalcPreferredRefPos();
+
+    //printf("[%05d] OpenPopupEx(0x%08X)\n", g.FrameCount, id);
+    if (g.OpenPopupStack.Size < current_stack_size + 1)
+    {
+        g.OpenPopupStack.push_back(popup_ref);
+    }
+    else
+    {
+        // Gently handle the user mistakenly calling OpenPopup() every frame. It is a programming mistake! However, if we were to run the regular code path, the ui
+        // would become completely unusable because the popup will always be in hidden-while-calculating-size state _while_ claiming focus. Which would be a very confusing
+        // situation for the programmer. Instead, we silently allow the popup to proceed, it will keep reappearing and the programming error will be more obvious to understand.
+        if (g.OpenPopupStack[current_stack_size].PopupId == id && g.OpenPopupStack[current_stack_size].OpenFrameCount == g.FrameCount - 1)
+        {
+            g.OpenPopupStack[current_stack_size].OpenFrameCount = popup_ref.OpenFrameCount;
+        }
+        else
+        {
+            // Close child popups if any, then flag popup for open/reopen
+            g.OpenPopupStack.resize(current_stack_size + 1);
+            g.OpenPopupStack[current_stack_size] = popup_ref;
+        }
+
+        // When reopening a popup we first refocus its parent, otherwise if its parent is itself a popup it would get closed by ClosePopupsOverWindow().
+        // This is equivalent to what ClosePopupToLevel() does.
+        //if (g.OpenPopupStack[current_stack_size].PopupId == id)
+        //    FocusWindow(parent_window);
+    }
+}
+
+bool ImGui::OpenPopupOnItemClick(const char* str_id, int mouse_button)
+{
+    ImGuiWindow* window = GImGui->CurrentWindow;
+    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+    {
+        ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
+        IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
+        OpenPopupEx(id);
+        return true;
+    }
+    return false;
+}
+
+void ImGui::ClosePopupsOverWindow(ImGuiWindow* ref_window)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.OpenPopupStack.empty())
+        return;
+
+    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
+    // Don't close our own child popup windows.
+    int n = 0;
+    if (ref_window)
+    {
+        for (n = 0; n < g.OpenPopupStack.Size; n++)
+        {
+            ImGuiPopupRef& popup = g.OpenPopupStack[n];
+            if (!popup.Window)
+                continue;
+            IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
+            if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
+                continue;
+
+            // Trim the stack if popups are not direct descendant of the reference window (which is often the NavWindow)
+            bool has_focus = false;
+            for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
+                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
+            if (!has_focus)
+                break;
+        }
+    }
+    if (n < g.OpenPopupStack.Size) // This test is not required but it allows to set a convenient breakpoint on the block below
+        ClosePopupToLevel(n);
+}
+
+void ImGui::ClosePopupToLevel(int remaining)
+{
+    IM_ASSERT(remaining >= 0);
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* focus_window = (remaining > 0) ? g.OpenPopupStack[remaining-1].Window : g.OpenPopupStack[0].ParentWindow;
+    if (g.NavLayer == 0)
+        focus_window = NavRestoreLastChildNavWindow(focus_window);
+    FocusWindow(focus_window);
+    focus_window->DC.NavHideHighlightOneFrame = true;
+    g.OpenPopupStack.resize(remaining);
+}
+
+void ImGui::ClosePopup(ImGuiID id)
+{
+    if (!IsPopupOpen(id))
+        return;
+    ImGuiContext& g = *GImGui;
+    ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+}
+
+// Close the popup we have begin-ed into.
+void ImGui::CloseCurrentPopup()
+{
+    ImGuiContext& g = *GImGui;
+    int popup_idx = g.CurrentPopupStack.Size - 1;
+    if (popup_idx < 0 || popup_idx >= g.OpenPopupStack.Size || g.CurrentPopupStack[popup_idx].PopupId != g.OpenPopupStack[popup_idx].PopupId)
+        return;
+    while (popup_idx > 0 && g.OpenPopupStack[popup_idx].Window && (g.OpenPopupStack[popup_idx].Window->Flags & ImGuiWindowFlags_ChildMenu))
+        popup_idx--;
+    ClosePopupToLevel(popup_idx);
+}
+
+bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (!IsPopupOpen(id))
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+
+    char name[20];
+    if (extra_flags & ImGuiWindowFlags_ChildMenu)
+        ImFormatString(name, IM_ARRAYSIZE(name), "##Menu_%02d", g.CurrentPopupStack.Size);    // Recycle windows based on depth
+    else
+        ImFormatString(name, IM_ARRAYSIZE(name), "##Popup_%08x", id); // Not recycling, so we can close/open during the same frame
+
+    bool is_open = Begin(name, NULL, extra_flags | ImGuiWindowFlags_Popup);
+    if (!is_open) // NB: Begin can return false when the popup is completely clipped (e.g. zero size display)
+        EndPopup();
+
+    return is_open;
+}
+
+bool ImGui::BeginPopup(const char* str_id, ImGuiWindowFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.OpenPopupStack.Size <= g.CurrentPopupStack.Size) // Early out for performance
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+    return BeginPopupEx(g.CurrentWindow->GetID(str_id), flags|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    const ImGuiID id = window->GetID(name);
+    if (!IsPopupOpen(id))
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+
+    // Center modal windows by default
+    // FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
+    if (g.NextWindowData.PosCond == 0)
+        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
+
+    bool is_open = Begin(name, p_open, flags | ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
+    if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
+    {
+        EndPopup();
+        if (is_open)
+            ClosePopup(id);
+        return false;
+    }
+    return is_open;
+}
+
+void ImGui::EndPopup()
+{
+    ImGuiContext& g = *GImGui; (void)g;
+    IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup);  // Mismatched BeginPopup()/EndPopup() calls
+    IM_ASSERT(g.CurrentPopupStack.Size > 0);
+
+    // Make all menus and popups wrap around for now, may need to expose that policy.
+    NavMoveRequestTryWrapping(g.CurrentWindow, ImGuiNavMoveFlags_LoopY);
+
+    End();
+}
+
+// This is a helper to handle the simplest case of associating one named popup to one given widget.
+// You may want to handle this on user side if you have specific needs (e.g. tweaking IsItemHovered() parameters).
+// You can pass a NULL str_id to use the identifier of the last item.
+bool ImGui::BeginPopupContextItem(const char* str_id, int mouse_button)
+{
+    ImGuiWindow* window = GImGui->CurrentWindow;
+    ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
+    IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
+    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+        OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupContextWindow(const char* str_id, int mouse_button, bool also_over_items)
+{
+    if (!str_id)
+        str_id = "window_context";
+    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
+    if (IsMouseReleased(mouse_button) && IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+        if (also_over_items || !IsAnyItemHovered())
+            OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupContextVoid(const char* str_id, int mouse_button)
+{
+    if (!str_id)
+        str_id = "void_context";
+    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
+    if (IsMouseReleased(mouse_button) && !IsWindowHovered(ImGuiHoveredFlags_AnyWindow))
+        OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+ImRect ImGui::GetWindowAllowedExtentRect(ImGuiWindow*)
+{
+    ImVec2 padding = GImGui->Style.DisplaySafeAreaPadding;
+    ImRect r_screen = GetViewportRect();
+    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
+    return r_screen;
+}
+
+// r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
+// r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
+ImVec2 ImGui::FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy)
+{
+    ImVec2 base_pos_clamped = ImClamp(ref_pos, r_outer.Min, r_outer.Max - size);
+    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
+    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
+
+    // Combo Box policy (we want a connecting edge)
+    if (policy == ImGuiPopupPositionPolicy_ComboBox)
+    {
+        const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Down, ImGuiDir_Right, ImGuiDir_Left, ImGuiDir_Up };
+        for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
+        {
+            const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+            if (n != -1 && dir == *last_dir) // Already tried this direction?
+                continue;
+            ImVec2 pos;
+            if (dir == ImGuiDir_Down)  pos = ImVec2(r_avoid.Min.x, r_avoid.Max.y);          // Below, Toward Right (default)
+            if (dir == ImGuiDir_Right) pos = ImVec2(r_avoid.Min.x, r_avoid.Min.y - size.y); // Above, Toward Right
+            if (dir == ImGuiDir_Left)  pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Max.y); // Below, Toward Left
+            if (dir == ImGuiDir_Up)    pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Min.y - size.y); // Above, Toward Left
+            if (!r_outer.Contains(ImRect(pos, pos + size)))
+                continue;
+            *last_dir = dir;
+            return pos;
+        }
+    }
+
+    // Default popup policy
+    const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
+    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
+    {
+        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+        if (n != -1 && dir == *last_dir) // Already tried this direction?
+            continue;
+        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
+        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
+        if (avail_w < size.x || avail_h < size.y)
+            continue;
+        ImVec2 pos;
+        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
+        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
+        *last_dir = dir;
+        return pos;
+    }
+
+    // Fallback, try to keep within display
+    *last_dir = ImGuiDir_None;
+    ImVec2 pos = ref_pos;
+    pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
+    pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
+    return pos;
+}
+
+ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+
+    ImRect r_outer = GetWindowAllowedExtentRect(window);
+    if (window->Flags & ImGuiWindowFlags_ChildMenu)
+    {
+        // Child menus typically request _any_ position within the parent menu item, and then our FindBestWindowPosForPopup() function will move the new menu outside the parent bounds.
+        // This is how we end up with child menus appearing (most-commonly) on the right of the parent menu.
+        IM_ASSERT(g.CurrentWindow == window);
+        ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.Size - 2];
+        float horizontal_overlap = g.Style.ItemSpacing.x;       // We want some overlap to convey the relative depth of each menu (currently the amount of overlap is hard-coded to style.ItemSpacing.x).
+        ImRect r_avoid;
+        if (parent_window->DC.MenuBarAppending)
+            r_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
+        else
+            r_avoid = ImRect(parent_window->Pos.x + horizontal_overlap, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - horizontal_overlap - parent_window->ScrollbarSizes.x, FLT_MAX);
+        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+    }
+    if (window->Flags & ImGuiWindowFlags_Popup)
+    {
+        ImRect r_avoid = ImRect(window->Pos.x - 1, window->Pos.y - 1, window->Pos.x + 1, window->Pos.y + 1);
+        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+    }
+    if (window->Flags & ImGuiWindowFlags_Tooltip)
+    {
+        // Position tooltip (always follows mouse)
+        float sc = g.Style.MouseCursorScale;
+        ImVec2 ref_pos = NavCalcPreferredRefPos();
+        ImRect r_avoid;
+        if (!g.NavDisableHighlight && g.NavDisableMouseHover && !(g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos))
+            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 16, ref_pos.y + 8);
+        else
+            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24 * sc, ref_pos.y + 24 * sc); // FIXME: Hard-coded based on mouse cursor shape expectation. Exact dimension not very important.
+        ImVec2 pos = FindBestWindowPosForPopupEx(ref_pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+        if (window->AutoPosLastDirection == ImGuiDir_None)
+            pos = ref_pos + ImVec2(2, 2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
+        return pos;
+    }
+    IM_ASSERT(0);
+    return window->Pos;
+}
+
+//-----------------------------------------------------------------------------
+// NAVIGATION
+//-----------------------------------------------------------------------------
+
+static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
+{
+    if (ImFabs(dx) > ImFabs(dy))
+        return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
+    return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
+}
+
+static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
+{
+    if (a1 < b0)
+        return a1 - b0;
+    if (b1 < a0)
+        return a0 - b1;
+    return 0.0f;
+}
+
+static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
+{
+    if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
+    {
+        r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
+        r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
+    }
+    else
+    {
+        r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
+        r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
+    }
+}
+
+// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
+static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    if (g.NavLayer != window->DC.NavLayerCurrent)
+        return false;
+
+    const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
+    g.NavScoringCount++;
+
+    // When entering through a NavFlattened border, we consider child window items as fully clipped for scoring
+    if (window->ParentWindow == g.NavWindow)
+    {
+        IM_ASSERT((window->Flags | g.NavWindow->Flags) & ImGuiWindowFlags_NavFlattened);
+        if (!window->ClipRect.Contains(cand))
+            return false;
+        cand.ClipWithFull(window->ClipRect); // This allows the scored item to not overlap other candidates in the parent window
+    }
+
+    // We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
+    // For example, this ensure that items in one column are not reached when moving vertically from items in another column.
+    NavClampRectToVisibleAreaForMoveDir(g.NavMoveClipDir, cand, window->ClipRect);
+
+    // Compute distance between boxes
+    // FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
+    float dbx = NavScoreItemDistInterval(cand.Min.x, cand.Max.x, curr.Min.x, curr.Max.x);
+    float dby = NavScoreItemDistInterval(ImLerp(cand.Min.y, cand.Max.y, 0.2f), ImLerp(cand.Min.y, cand.Max.y, 0.8f), ImLerp(curr.Min.y, curr.Max.y, 0.2f), ImLerp(curr.Min.y, curr.Max.y, 0.8f)); // Scale down on Y to keep using box-distance for vertically touching items
+    if (dby != 0.0f && dbx != 0.0f)
+       dbx = (dbx/1000.0f) + ((dbx > 0.0f) ? +1.0f : -1.0f);
+    float dist_box = ImFabs(dbx) + ImFabs(dby);
+
+    // Compute distance between centers (this is off by a factor of 2, but we only compare center distances with each other so it doesn't matter)
+    float dcx = (cand.Min.x + cand.Max.x) - (curr.Min.x + curr.Max.x);
+    float dcy = (cand.Min.y + cand.Max.y) - (curr.Min.y + curr.Max.y);
+    float dist_center = ImFabs(dcx) + ImFabs(dcy); // L1 metric (need this for our connectedness guarantee)
+
+    // Determine which quadrant of 'curr' our candidate item 'cand' lies in based on distance
+    ImGuiDir quadrant;
+    float dax = 0.0f, day = 0.0f, dist_axial = 0.0f;
+    if (dbx != 0.0f || dby != 0.0f)
+    {
+        // For non-overlapping boxes, use distance between boxes
+        dax = dbx;
+        day = dby;
+        dist_axial = dist_box;
+        quadrant = NavScoreItemGetQuadrant(dbx, dby);
+    }
+    else if (dcx != 0.0f || dcy != 0.0f)
+    {
+        // For overlapping boxes with different centers, use distance between centers
+        dax = dcx;
+        day = dcy;
+        dist_axial = dist_center;
+        quadrant = NavScoreItemGetQuadrant(dcx, dcy);
+    }
+    else
+    {
+        // Degenerate case: two overlapping buttons with same center, break ties arbitrarily (note that LastItemId here is really the _previous_ item order, but it doesn't matter)
+        quadrant = (window->DC.LastItemId < g.NavId) ? ImGuiDir_Left : ImGuiDir_Right;
+    }
+
+#if IMGUI_DEBUG_NAV_SCORING
+    char buf[128];
+    if (ImGui::IsMouseHoveringRect(cand.Min, cand.Max))
+    {
+        ImFormatString(buf, IM_ARRAYSIZE(buf), "dbox (%.2f,%.2f->%.4f)\ndcen (%.2f,%.2f->%.4f)\nd (%.2f,%.2f->%.4f)\nnav %c, quadrant %c", dbx, dby, dist_box, dcx, dcy, dist_center, dax, day, dist_axial, "WENS"[g.NavMoveDir], "WENS"[quadrant]);
+        ImDrawList* draw_list = ImGui::GetOverlayDrawList();
+        draw_list->AddRect(curr.Min, curr.Max, IM_COL32(255,200,0,100));
+        draw_list->AddRect(cand.Min, cand.Max, IM_COL32(255,255,0,200));
+        draw_list->AddRectFilled(cand.Max-ImVec2(4,4), cand.Max+ImGui::CalcTextSize(buf)+ImVec2(4,4), IM_COL32(40,0,0,150));
+        draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Max, ~0U, buf);
+    }
+    else if (g.IO.KeyCtrl) // Hold to preview score in matching quadrant. Press C to rotate.
+    {
+        if (IsKeyPressedMap(ImGuiKey_C)) { g.NavMoveDirLast = (ImGuiDir)((g.NavMoveDirLast + 1) & 3); g.IO.KeysDownDuration[g.IO.KeyMap[ImGuiKey_C]] = 0.01f; }
+        if (quadrant == g.NavMoveDir)
+        {
+            ImFormatString(buf, IM_ARRAYSIZE(buf), "%.0f/%.0f", dist_box, dist_center);
+            ImDrawList* draw_list = ImGui::GetOverlayDrawList();
+            draw_list->AddRectFilled(cand.Min, cand.Max, IM_COL32(255, 0, 0, 200));
+            draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Min, IM_COL32(255, 255, 255, 255), buf);
+        }
+    }
+ #endif
+
+    // Is it in the quadrant we're interesting in moving to?
+    bool new_best = false;
+    if (quadrant == g.NavMoveDir)
+    {
+        // Does it beat the current best candidate?
+        if (dist_box < result->DistBox)
+        {
+            result->DistBox = dist_box;
+            result->DistCenter = dist_center;
+            return true;
+        }
+        if (dist_box == result->DistBox)
+        {
+            // Try using distance between center points to break ties
+            if (dist_center < result->DistCenter)
+            {
+                result->DistCenter = dist_center;
+                new_best = true;
+            }
+            else if (dist_center == result->DistCenter)
+            {
+                // Still tied! we need to be extra-careful to make sure everything gets linked properly. We consistently break ties by symbolically moving "later" items
+                // (with higher index) to the right/downwards by an infinitesimal amount since we the current "best" button already (so it must have a lower index),
+                // this is fairly easy. This rule ensures that all buttons with dx==dy==0 will end up being linked in order of appearance along the x axis.
+                if (((g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down) ? dby : dbx) < 0.0f) // moving bj to the right/down decreases distance
+                    new_best = true;
+            }
+        }
+    }
+
+    // Axial check: if 'curr' has no link at all in some direction and 'cand' lies roughly in that direction, add a tentative link. This will only be kept if no "real" matches
+    // are found, so it only augments the graph produced by the above method using extra links. (important, since it doesn't guarantee strong connectedness)
+    // This is just to avoid buttons having no links in a particular direction when there's a suitable neighbor. you get good graphs without this too.
+    // 2017/09/29: FIXME: This now currently only enabled inside menu bars, ideally we'd disable it everywhere. Menus in particular need to catch failure. For general navigation it feels awkward.
+    // Disabling it may lead to disconnected graphs when nodes are very spaced out on different axis. Perhaps consider offering this as an option?
+    if (result->DistBox == FLT_MAX && dist_axial < result->DistAxial)  // Check axial match
+        if (g.NavLayer == 1 && !(g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
+            if ((g.NavMoveDir == ImGuiDir_Left && dax < 0.0f) || (g.NavMoveDir == ImGuiDir_Right && dax > 0.0f) || (g.NavMoveDir == ImGuiDir_Up && day < 0.0f) || (g.NavMoveDir == ImGuiDir_Down && day > 0.0f))
+            {
+                result->DistAxial = dist_axial;
+                new_best = true;
+            }
+
+    return new_best;
+}
+
+// We get there when either NavId == id, or when g.NavAnyRequest is set (which is updated by NavUpdateAnyRequestFlag above)
+static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    //if (!g.IO.NavActive)  // [2017/10/06] Removed this possibly redundant test but I am not sure of all the side-effects yet. Some of the feature here will need to work regardless of using a _NoNavInputs flag.
+    //    return;
+
+    const ImGuiItemFlags item_flags = window->DC.ItemFlags;
+    const ImRect nav_bb_rel(nav_bb.Min - window->Pos, nav_bb.Max - window->Pos);
+
+    // Process Init Request
+    if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
+    {
+        // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
+        {
+            g.NavInitResultId = id;
+            g.NavInitResultRectRel = nav_bb_rel;
+        }
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
+        {
+            g.NavInitRequest = false; // Found a match, clear request
+            NavUpdateAnyRequestFlag();
+        }
+    }
+
+    // Process Move Request (scoring for navigation)
+    // FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
+    if ((g.NavId != id || (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AllowCurrentNavId)) && !(item_flags & ImGuiItemFlags_NoNav))
+    {
+        ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
+#if IMGUI_DEBUG_NAV_SCORING
+        // [DEBUG] Score all items in NavWindow at all times
+        if (!g.NavMoveRequest)
+            g.NavMoveDir = g.NavMoveDirLast;
+        bool new_best = NavScoreItem(result, nav_bb) && g.NavMoveRequest;
+#else
+        bool new_best = g.NavMoveRequest && NavScoreItem(result, nav_bb);
+#endif
+        if (new_best)
+        {
+            result->ID = id;
+            result->Window = window;
+            result->RectRel = nav_bb_rel;
+        }
+
+        const float VISIBLE_RATIO = 0.70f;
+        if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
+            if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
+                if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
+                {
+                    result = &g.NavMoveResultLocalVisibleSet;
+                    result->ID = id;
+                    result->Window = window;
+                    result->RectRel = nav_bb_rel;
+                }
+    }
+
+    // Update window-relative bounding box of navigated item
+    if (g.NavId == id)
+    {
+        g.NavWindow = window;                                           // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
+        g.NavLayer = window->DC.NavLayerCurrent;
+        g.NavIdIsAlive = true;
+        g.NavIdTabCounter = window->FocusIdxTabCounter;
+        window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel;    // Store item bounding box (relative to window position)
+    }
+}
+
+bool ImGui::NavMoveRequestButNoResultYet()
+{
+    ImGuiContext& g = *GImGui;
+    return g.NavMoveRequest && g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0;
+}
+
+void ImGui::NavMoveRequestCancel()
+{
+    ImGuiContext& g = *GImGui;
+    g.NavMoveRequest = false;
+    NavUpdateAnyRequestFlag();
+}
+
+void ImGui::NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, const ImRect& bb_rel, ImGuiNavMoveFlags move_flags)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_None);
+    ImGui::NavMoveRequestCancel();
+    g.NavMoveDir = move_dir;
+    g.NavMoveClipDir = clip_dir;
+    g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
+    g.NavMoveRequestFlags = move_flags;
+    g.NavWindow->NavRectRel[g.NavLayer] = bb_rel;
+}
+
+void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavWindow != window || !NavMoveRequestButNoResultYet() || g.NavMoveRequestForward != ImGuiNavForward_None || g.NavLayer != 0)
+        return;
+    IM_ASSERT(move_flags != 0); // No points calling this with no wrapping
+    ImRect bb_rel = window->NavRectRel[0];
+
+    ImGuiDir clip_dir = g.NavMoveDir;
+    if (g.NavMoveDir == ImGuiDir_Left && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
+    {
+        bb_rel.Min.x = bb_rel.Max.x = ImMax(window->SizeFull.x, window->SizeContents.x) - window->Scroll.x;
+        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(-bb_rel.GetHeight()); clip_dir = ImGuiDir_Up; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Right && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
+    {
+        bb_rel.Min.x = bb_rel.Max.x = -window->Scroll.x;
+        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(+bb_rel.GetHeight()); clip_dir = ImGuiDir_Down; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Up && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
+    {
+        bb_rel.Min.y = bb_rel.Max.y = ImMax(window->SizeFull.y, window->SizeContents.y) - window->Scroll.y;
+        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(-bb_rel.GetWidth()); clip_dir = ImGuiDir_Left; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Down && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
+    {
+        bb_rel.Min.y = bb_rel.Max.y = -window->Scroll.y;
+        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(+bb_rel.GetWidth()); clip_dir = ImGuiDir_Right; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+}
+
+static void ImGui::NavSaveLastChildNavWindow(ImGuiWindow* nav_window)
+{
+    ImGuiWindow* parent_window = nav_window;
+    while (parent_window && (parent_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (parent_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
+        parent_window = parent_window->ParentWindow;
+    if (parent_window && parent_window != nav_window)
+        parent_window->NavLastChildNavWindow = nav_window;
+}
+
+// Call when we are expected to land on Layer 0 after FocusWindow()
+static ImGuiWindow* ImGui::NavRestoreLastChildNavWindow(ImGuiWindow* window)
+{
+    return window->NavLastChildNavWindow ? window->NavLastChildNavWindow : window;
+}
+
+static void NavRestoreLayer(int layer)
+{
+    ImGuiContext& g = *GImGui;
+    g.NavLayer = layer;
+    if (layer == 0)
+        g.NavWindow = ImGui::NavRestoreLastChildNavWindow(g.NavWindow);
+    if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
+        ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
+    else
+        ImGui::NavInitWindow(g.NavWindow, true);
+}
+
+static inline void ImGui::NavUpdateAnyRequestFlag()
+{
+    ImGuiContext& g = *GImGui;
+    g.NavAnyRequest = g.NavMoveRequest || g.NavInitRequest || (IMGUI_DEBUG_NAV_SCORING && g.NavWindow != NULL);
+    if (g.NavAnyRequest)
+        IM_ASSERT(g.NavWindow != NULL);
+}
+
+// This needs to be called before we submit any widget (aka in or before Begin)
+void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(window == g.NavWindow);
+    bool init_for_nav = false;
+    if (!(window->Flags & ImGuiWindowFlags_NoNavInputs))
+        if (!(window->Flags & ImGuiWindowFlags_ChildWindow) || (window->Flags & ImGuiWindowFlags_Popup) || (window->NavLastIds[0] == 0) || force_reinit)
+            init_for_nav = true;
+    if (init_for_nav)
+    {
+        SetNavID(0, g.NavLayer);
+        g.NavInitRequest = true;
+        g.NavInitRequestFromMove = false;
+        g.NavInitResultId = 0;
+        g.NavInitResultRectRel = ImRect();
+        NavUpdateAnyRequestFlag();
+    }
+    else
+    {
+        g.NavId = window->NavLastIds[0];
+    }
+}
+
+static ImVec2 ImGui::NavCalcPreferredRefPos()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow)
+        return ImFloor(g.IO.MousePos);
+
+    // When navigation is active and mouse is disabled, decide on an arbitrary position around the bottom left of the currently navigated item
+    const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
+    ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x*4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
+    ImRect visible_rect = GetViewportRect();
+    return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
+}
+
+float ImGui::GetNavInputAmount(ImGuiNavInput n, ImGuiInputReadMode mode)
+{
+    ImGuiContext& g = *GImGui;
+    if (mode == ImGuiInputReadMode_Down)
+        return g.IO.NavInputs[n];                         // Instant, read analog input (0.0f..1.0f, as provided by user)
+
+    const float t = g.IO.NavInputsDownDuration[n];
+    if (t < 0.0f && mode == ImGuiInputReadMode_Released)  // Return 1.0f when just released, no repeat, ignore analog input.
+        return (g.IO.NavInputsDownDurationPrev[n] >= 0.0f ? 1.0f : 0.0f);
+    if (t < 0.0f)
+        return 0.0f;
+    if (mode == ImGuiInputReadMode_Pressed)               // Return 1.0f when just pressed, no repeat, ignore analog input.
+        return (t == 0.0f) ? 1.0f : 0.0f;
+    if (mode == ImGuiInputReadMode_Repeat)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
+    if (mode == ImGuiInputReadMode_RepeatSlow)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 1.00f, g.IO.KeyRepeatRate * 2.00f);
+    if (mode == ImGuiInputReadMode_RepeatFast)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.30f);
+    return 0.0f;
+}
+
+ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor, float fast_factor)
+{
+    ImVec2 delta(0.0f, 0.0f);
+    if (dir_sources & ImGuiNavDirSourceFlags_Keyboard)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_KeyRight_, mode)   - GetNavInputAmount(ImGuiNavInput_KeyLeft_,   mode), GetNavInputAmount(ImGuiNavInput_KeyDown_,   mode) - GetNavInputAmount(ImGuiNavInput_KeyUp_,   mode));
+    if (dir_sources & ImGuiNavDirSourceFlags_PadDPad)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_DpadRight, mode)   - GetNavInputAmount(ImGuiNavInput_DpadLeft,   mode), GetNavInputAmount(ImGuiNavInput_DpadDown,   mode) - GetNavInputAmount(ImGuiNavInput_DpadUp,   mode));
+    if (dir_sources & ImGuiNavDirSourceFlags_PadLStick)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_LStickRight, mode) - GetNavInputAmount(ImGuiNavInput_LStickLeft, mode), GetNavInputAmount(ImGuiNavInput_LStickDown, mode) - GetNavInputAmount(ImGuiNavInput_LStickUp, mode));
+    if (slow_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakSlow))
+        delta *= slow_factor;
+    if (fast_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakFast))
+        delta *= fast_factor;
+    return delta;
+}
+
+// Scroll to keep newly navigated item fully into view
+// NB: We modify rect_rel by the amount we scrolled for, so it is immediately updated.
+static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item_rect)
+{
+    ImRect window_rect(window->InnerMainRect.Min - ImVec2(1, 1), window->InnerMainRect.Max + ImVec2(1, 1));
+    //g.OverlayDrawList.AddRect(window_rect.Min, window_rect.Max, IM_COL32_WHITE); // [DEBUG]
+    if (window_rect.Contains(item_rect))
+        return;
+
+    ImGuiContext& g = *GImGui;
+    if (window->ScrollbarX && item_rect.Min.x < window_rect.Min.x)
+    {
+        window->ScrollTarget.x = item_rect.Min.x - window->Pos.x + window->Scroll.x - g.Style.ItemSpacing.x;
+        window->ScrollTargetCenterRatio.x = 0.0f;
+    }
+    else if (window->ScrollbarX && item_rect.Max.x >= window_rect.Max.x)
+    {
+        window->ScrollTarget.x = item_rect.Max.x - window->Pos.x + window->Scroll.x + g.Style.ItemSpacing.x;
+        window->ScrollTargetCenterRatio.x = 1.0f;
+    }
+    if (item_rect.Min.y < window_rect.Min.y)
+    {
+        window->ScrollTarget.y = item_rect.Min.y - window->Pos.y + window->Scroll.y - g.Style.ItemSpacing.y;
+        window->ScrollTargetCenterRatio.y = 0.0f;
+    }
+    else if (item_rect.Max.y >= window_rect.Max.y)
+    {
+        window->ScrollTarget.y = item_rect.Max.y - window->Pos.y + window->Scroll.y + g.Style.ItemSpacing.y;
+        window->ScrollTargetCenterRatio.y = 1.0f;
+    }
+}
+
+static void ImGui::NavUpdate()
+{
+    ImGuiContext& g = *GImGui;
+    g.IO.WantSetMousePos = false;
+#if 0
+    if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
+#endif
+
+    // Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
+    bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
+    bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
+    if (nav_gamepad_active)
+        if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
+            g.NavInputSource = ImGuiInputSource_NavGamepad;
+
+    // Update Keyboard->Nav inputs mapping
+    if (nav_keyboard_active)
+    {
+        #define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
+        NAV_MAP_KEY(ImGuiKey_Space,     ImGuiNavInput_Activate );
+        NAV_MAP_KEY(ImGuiKey_Enter,     ImGuiNavInput_Input    );
+        NAV_MAP_KEY(ImGuiKey_Escape,    ImGuiNavInput_Cancel   );
+        NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
+        NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
+        NAV_MAP_KEY(ImGuiKey_UpArrow,   ImGuiNavInput_KeyUp_   );
+        NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
+        if (g.IO.KeyCtrl)   g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
+        if (g.IO.KeyShift)  g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
+        if (g.IO.KeyAlt)    g.IO.NavInputs[ImGuiNavInput_KeyMenu_]  = 1.0f;
+        #undef NAV_MAP_KEY
+    }
+    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
+    for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
+        g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
+
+    // Process navigation init request (select first/default focus)
+    if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
+    {
+        // Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
+        IM_ASSERT(g.NavWindow);
+        if (g.NavInitRequestFromMove)
+            SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
+        else
+            SetNavID(g.NavInitResultId, g.NavLayer);
+        g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
+    }
+    g.NavInitRequest = false;
+    g.NavInitRequestFromMove = false;
+    g.NavInitResultId = 0;
+    g.NavJustMovedToId = 0;
+
+    // Process navigation move request
+    if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
+        NavUpdateMoveResult();
+
+    // When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
+    if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
+    {
+        IM_ASSERT(g.NavMoveRequest);
+        if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
+            g.NavDisableHighlight = false;
+        g.NavMoveRequestForward = ImGuiNavForward_None;
+    }
+
+    // Apply application mouse position movement, after we had a chance to process move request result.
+    if (g.NavMousePosDirty && g.NavIdIsAlive)
+    {
+        // Set mouse position given our knowledge of the navigated item position from last frame
+        if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
+        {
+            if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
+            {
+                g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
+                g.IO.WantSetMousePos = true;
+            }
+        }
+        g.NavMousePosDirty = false;
+    }
+    g.NavIdIsAlive = false;
+    g.NavJustTabbedId = 0;
+    IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
+
+    // Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
+    if (g.NavWindow)
+        NavSaveLastChildNavWindow(g.NavWindow);
+    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
+        g.NavWindow->NavLastChildNavWindow = NULL;
+
+    // Update CTRL+TAB and Windowing features (hold Square to move/resize/etc.)
+    NavUpdateWindowing();
+
+    // Set output flags for user application
+    g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
+    g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
+
+    // Process NavCancel input (to close a popup, get back to parent, clear focus)
+    if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
+    {
+        if (g.ActiveId != 0)
+        {
+            ClearActiveID();
+        }
+        else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
+        {
+            // Exit child window
+            ImGuiWindow* child_window = g.NavWindow;
+            ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
+            IM_ASSERT(child_window->ChildId != 0);
+            FocusWindow(parent_window);
+            SetNavID(child_window->ChildId, 0);
+            g.NavIdIsAlive = false;
+            if (g.NavDisableMouseHover)
+                g.NavMousePosDirty = true;
+        }
+        else if (g.OpenPopupStack.Size > 0)
+        {
+            // Close open popup/menu
+            if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
+                ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+        }
+        else if (g.NavLayer != 0)
+        {
+            // Leave the "menu" layer
+            NavRestoreLayer(0);
+        }
+        else
+        {
+            // Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
+            if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
+                g.NavWindow->NavLastIds[0] = 0;
+            g.NavId = 0;
+        }
+    }
+
+    // Process manual activation request
+    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
+    if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+    {
+        bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
+        bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
+        if (g.ActiveId == 0 && activate_pressed)
+            g.NavActivateId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
+            g.NavActivateDownId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
+            g.NavActivatePressedId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
+            g.NavInputId = g.NavId;
+    }
+    if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+        g.NavDisableHighlight = true;
+    if (g.NavActivateId != 0)
+        IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
+    g.NavMoveRequest = false;
+
+    // Process programmatic activation request
+    if (g.NavNextActivateId != 0)
+        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
+    g.NavNextActivateId = 0;
+
+    // Initiate directional inputs request
+    const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
+    if (g.NavMoveRequestForward == ImGuiNavForward_None)
+    {
+        g.NavMoveDir = ImGuiDir_None;
+        g.NavMoveRequestFlags = 0;
+        if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+        {
+            if ((allowed_dir_flags & (1<<ImGuiDir_Left))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Up))    && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp,   ImGuiNavInput_KeyUp_,   ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Down))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
+        }
+        g.NavMoveClipDir = g.NavMoveDir;
+    }
+    else
+    {
+        // Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
+        // (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
+        IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
+        IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
+        g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
+    }
+
+    // Update PageUp/PageDown scroll
+    float nav_scoring_rect_offset_y = 0.0f;
+    if (nav_keyboard_active)
+        nav_scoring_rect_offset_y = NavUpdatePageUpPageDown(allowed_dir_flags);
+
+    // If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
+    if (g.NavMoveDir != ImGuiDir_None)
+    {
+        g.NavMoveRequest = true;
+        g.NavMoveDirLast = g.NavMoveDir;
+    }
+    if (g.NavMoveRequest && g.NavId == 0)
+    {
+        g.NavInitRequest = g.NavInitRequestFromMove = true;
+        g.NavInitResultId = 0;
+        g.NavDisableHighlight = false;
+    }
+    NavUpdateAnyRequestFlag();
+
+    // Scrolling
+    if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
+    {
+        // *Fallback* manual-scroll with Nav directional keys when window has no navigable item
+        ImGuiWindow* window = g.NavWindow;
+        const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
+        if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
+        {
+            if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
+                SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
+            if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
+                SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
+        }
+
+        // *Normal* Manual scroll with NavScrollXXX keys
+        // Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
+        ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
+        if (scroll_dir.x != 0.0f && window->ScrollbarX)
+        {
+            SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
+            g.NavMoveFromClampedRefRect = true;
+        }
+        if (scroll_dir.y != 0.0f)
+        {
+            SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
+            g.NavMoveFromClampedRefRect = true;
+        }
+    }
+
+    // Reset search results
+    g.NavMoveResultLocal.Clear();
+    g.NavMoveResultLocalVisibleSet.Clear();
+    g.NavMoveResultOther.Clear();
+
+    // When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
+    if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
+    {
+        ImGuiWindow* window = g.NavWindow;
+        ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
+        if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
+        {
+            float pad = window->CalcFontSize() * 0.5f;
+            window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
+            window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
+            g.NavId = 0;
+        }
+        g.NavMoveFromClampedRefRect = false;
+    }
+
+    // For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
+    ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
+    g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
+    g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
+    g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
+    g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
+    IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
+    //g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
+    g.NavScoringCount = 0;
+#if IMGUI_DEBUG_NAV_RECTS
+    if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
+    if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
+#endif
+}
+
+static void ImGui::NavUpdateMoveResult()
+{
+    // Select which result to use
+    ImGuiContext& g = *GImGui;
+    ImGuiNavMoveResult* result = (g.NavMoveResultLocal.ID != 0) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
+
+    // PageUp/PageDown behavior first jumps to the bottom/top mostly visible item, _otherwise_ use the result from the previous/next page.
+    if (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet)
+        if (g.NavMoveResultLocalVisibleSet.ID != 0 && g.NavMoveResultLocalVisibleSet.ID != g.NavId)
+            result = &g.NavMoveResultLocalVisibleSet;
+
+    // Maybe entering a flattened child from the outside? In this case solve the tie using the regular scoring rules.
+    if (result != &g.NavMoveResultOther && g.NavMoveResultOther.ID != 0 && g.NavMoveResultOther.Window->ParentWindow == g.NavWindow)
+        if ((g.NavMoveResultOther.DistBox < result->DistBox) || (g.NavMoveResultOther.DistBox == result->DistBox && g.NavMoveResultOther.DistCenter < result->DistCenter))
+            result = &g.NavMoveResultOther;
+    IM_ASSERT(g.NavWindow && result->Window);
+
+    // Scroll to keep newly navigated item fully into view.
+    if (g.NavLayer == 0)
+    {
+        ImRect rect_abs = ImRect(result->RectRel.Min + result->Window->Pos, result->RectRel.Max + result->Window->Pos);
+        NavScrollToBringItemIntoView(result->Window, rect_abs);
+
+        // Estimate upcoming scroll so we can offset our result position so mouse position can be applied immediately after in NavUpdate()
+        ImVec2 next_scroll = CalcNextScrollFromScrollTargetAndClamp(result->Window, false);
+        ImVec2 delta_scroll = result->Window->Scroll - next_scroll;
+        result->RectRel.Translate(delta_scroll);
+
+        // Also scroll parent window to keep us into view if necessary (we could/should technically recurse back the whole the parent hierarchy).
+        if (result->Window->Flags & ImGuiWindowFlags_ChildWindow)
+            NavScrollToBringItemIntoView(result->Window->ParentWindow, ImRect(rect_abs.Min + delta_scroll, rect_abs.Max + delta_scroll));
+    }
+
+    // Apply result from previous frame navigation directional move request
+    ClearActiveID();
+    g.NavWindow = result->Window;
+    SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
+    g.NavJustMovedToId = result->ID;
+    g.NavMoveFromClampedRefRect = false;
+}
+
+static float ImGui::NavUpdatePageUpPageDown(int allowed_dir_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavMoveDir == ImGuiDir_None && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget && g.NavLayer == 0)
+    {
+        ImGuiWindow* window = g.NavWindow;
+        bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && (allowed_dir_flags & (1 << ImGuiDir_Up));
+        bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && (allowed_dir_flags & (1 << ImGuiDir_Down));
+        if ((page_up_held && !page_down_held) || (page_down_held && !page_up_held))
+        {
+            if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
+            {
+                // Fallback manual-scroll when window has no navigable item
+                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
+                    SetWindowScrollY(window, window->Scroll.y - window->InnerClipRect.GetHeight());
+                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
+                    SetWindowScrollY(window, window->Scroll.y + window->InnerClipRect.GetHeight());
+            }
+            else
+            {
+                const ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
+                const float page_offset_y = ImMax(0.0f, window->InnerClipRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
+                float nav_scoring_rect_offset_y = 0.0f;
+                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
+                {
+                    nav_scoring_rect_offset_y = -page_offset_y;
+                    g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
+                    g.NavMoveClipDir = ImGuiDir_Up;
+                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
+                }
+                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
+                {
+                    nav_scoring_rect_offset_y = +page_offset_y;
+                    g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
+                    g.NavMoveClipDir = ImGuiDir_Down;
+                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
+                }
+                return nav_scoring_rect_offset_y;
+            }
+        }
+    }
+    return 0.0f;
+}
+
+static int FindWindowIndex(ImGuiWindow* window) // FIXME-OPT O(N)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = g.Windows.Size-1; i >= 0; i--)
+        if (g.Windows[i] == window)
+            return i;
+    return -1;
+}
+
+static ImGuiWindow* FindWindowNavFocusable(int i_start, int i_stop, int dir) // FIXME-OPT O(N)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = i_start; i >= 0 && i < g.Windows.Size && i != i_stop; i += dir)
+        if (ImGui::IsWindowNavFocusable(g.Windows[i]))
+            return g.Windows[i];
+    return NULL;
+}
+
+static void NavUpdateWindowingHighlightWindow(int focus_change_dir)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavWindowingTarget);
+    if (g.NavWindowingTarget->Flags & ImGuiWindowFlags_Modal)
+        return;
+
+    const int i_current = FindWindowIndex(g.NavWindowingTarget);
+    ImGuiWindow* window_target = FindWindowNavFocusable(i_current + focus_change_dir, -INT_MAX, focus_change_dir);
+    if (!window_target)
+        window_target = FindWindowNavFocusable((focus_change_dir < 0) ? (g.Windows.Size - 1) : 0, i_current, focus_change_dir);
+    if (window_target) // Don't reset windowing target if there's a single window in the list
+        g.NavWindowingTarget = g.NavWindowingTargetAnim = window_target;
+    g.NavWindowingToggleLayer = false;
+}
+
+// Window management mode (hold to: change focus/move/resize, tap to: toggle menu layer)
+static void ImGui::NavUpdateWindowing()
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* apply_focus_window = NULL;
+    bool apply_toggle_layer = false;
+
+    ImGuiWindow* modal_window = GetFrontMostPopupModal();
+    if (modal_window != NULL)
+    {
+        g.NavWindowingTarget = NULL;
+        return;
+    }
+
+    // Fade out
+    if (g.NavWindowingTargetAnim && g.NavWindowingTarget == NULL)
+    {
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha - g.IO.DeltaTime * 10.0f, 0.0f);
+        if (g.DimBgRatio <= 0.0f && g.NavWindowingHighlightAlpha <= 0.0f)
+            g.NavWindowingTargetAnim = NULL;
+    }
+
+    // Start CTRL-TAB or Square+L/R window selection
+    bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
+    bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
+    if (start_windowing_with_gamepad || start_windowing_with_keyboard)
+        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.Windows.Size - 1, -INT_MAX, -1))
+        {
+            g.NavWindowingTarget = g.NavWindowingTargetAnim = window;
+            g.NavWindowingTimer = g.NavWindowingHighlightAlpha = 0.0f;
+            g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
+            g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
+        }
+
+    // Gamepad update
+    g.NavWindowingTimer += g.IO.DeltaTime;
+    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavGamepad)
+    {
+        // Highlight only appears after a brief time holding the button, so that a fast tap on PadMenu (to toggle NavLayer) doesn't add visual noise
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f));
+
+        // Select window to focus
+        const int focus_change_dir = (int)IsNavInputPressed(ImGuiNavInput_FocusPrev, ImGuiInputReadMode_RepeatSlow) - (int)IsNavInputPressed(ImGuiNavInput_FocusNext, ImGuiInputReadMode_RepeatSlow);
+        if (focus_change_dir != 0)
+        {
+            NavUpdateWindowingHighlightWindow(focus_change_dir);
+            g.NavWindowingHighlightAlpha = 1.0f;
+        }
+
+        // Single press toggles NavLayer, long press with L/R apply actual focus on release (until then the window was merely rendered front-most)
+        if (!IsNavInputDown(ImGuiNavInput_Menu))
+        {
+            g.NavWindowingToggleLayer &= (g.NavWindowingHighlightAlpha < 1.0f); // Once button was held long enough we don't consider it a tap-to-toggle-layer press anymore.
+            if (g.NavWindowingToggleLayer && g.NavWindow)
+                apply_toggle_layer = true;
+            else if (!g.NavWindowingToggleLayer)
+                apply_focus_window = g.NavWindowingTarget;
+            g.NavWindowingTarget = NULL;
+        }
+    }
+
+    // Keyboard: Focus
+    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavKeyboard)
+    {
+        // Visuals only appears after a brief time after pressing TAB the first time, so that a fast CTRL+TAB doesn't add visual noise
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f)); // 1.0f
+        if (IsKeyPressedMap(ImGuiKey_Tab, true))
+            NavUpdateWindowingHighlightWindow(g.IO.KeyShift ? +1 : -1);
+        if (!g.IO.KeyCtrl)
+            apply_focus_window = g.NavWindowingTarget;
+    }
+
+    // Keyboard: Press and Release ALT to toggle menu layer
+    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
+    if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && IsNavInputPressed(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))
+        if (IsMousePosValid(&g.IO.MousePos) == IsMousePosValid(&g.IO.MousePosPrev))
+            apply_toggle_layer = true;
+
+    // Move window
+    if (g.NavWindowingTarget && !(g.NavWindowingTarget->Flags & ImGuiWindowFlags_NoMove))
+    {
+        ImVec2 move_delta;
+        if (g.NavInputSource == ImGuiInputSource_NavKeyboard && !g.IO.KeyShift)
+            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard, ImGuiInputReadMode_Down);
+        if (g.NavInputSource == ImGuiInputSource_NavGamepad)
+            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down);
+        if (move_delta.x != 0.0f || move_delta.y != 0.0f)
+        {
+            const float NAV_MOVE_SPEED = 800.0f;
+            const float move_speed = ImFloor(NAV_MOVE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); // FIXME: Doesn't code variable framerate very well
+            g.NavWindowingTarget->RootWindow->Pos += move_delta * move_speed;
+            g.NavDisableMouseHover = true;
+            MarkIniSettingsDirty(g.NavWindowingTarget);
+        }
+    }
+
+    // Apply final focus
+    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
+    {
+        g.NavDisableHighlight = false;
+        g.NavDisableMouseHover = true;
+        apply_focus_window = NavRestoreLastChildNavWindow(apply_focus_window);
+        ClosePopupsOverWindow(apply_focus_window);
+        FocusWindow(apply_focus_window);
+        if (apply_focus_window->NavLastIds[0] == 0)
+            NavInitWindow(apply_focus_window, false);
+
+        // If the window only has a menu layer, select it directly
+        if (apply_focus_window->DC.NavLayerActiveMask == (1 << 1))
+            g.NavLayer = 1;
+    }
+    if (apply_focus_window)
+        g.NavWindowingTarget = NULL;
+
+    // Apply menu/layer toggle
+    if (apply_toggle_layer && g.NavWindow)
+    {
+        // Move to parent menu if necessary
+        ImGuiWindow* new_nav_window = g.NavWindow;
+        while ((new_nav_window->DC.NavLayerActiveMask & (1 << 1)) == 0 && (new_nav_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (new_nav_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
+            new_nav_window = new_nav_window->ParentWindow;
+        if (new_nav_window != g.NavWindow)
+        {
+            ImGuiWindow* old_nav_window = g.NavWindow;
+            FocusWindow(new_nav_window);
+            new_nav_window->NavLastChildNavWindow = old_nav_window;
+        }
+        g.NavDisableHighlight = false;
+        g.NavDisableMouseHover = true;
+        NavRestoreLayer((g.NavWindow->DC.NavLayerActiveMask & (1 << 1)) ? (g.NavLayer ^ 1) : 0);
+    }
+}
+
+// Window has already passed the IsWindowNavFocusable()
+static const char* GetFallbackWindowNameForWindowingList(ImGuiWindow* window)
+{
+    if (window->Flags & ImGuiWindowFlags_Popup)
+        return "(Popup)";
+    if ((window->Flags & ImGuiWindowFlags_MenuBar) && strcmp(window->Name, "##MainMenuBar") == 0)
+        return "(Main menu bar)";
+    return "(Untitled)";
+}
+
+// Overlay displayed when using CTRL+TAB. Called by EndFrame().
+void ImGui::NavUpdateWindowingList()
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavWindowingTarget != NULL);
+
+    if (g.NavWindowingTimer < NAV_WINDOWING_LIST_APPEAR_DELAY)
+        return;
+
+    if (g.NavWindowingList == NULL)
+        g.NavWindowingList = FindWindowByName("###NavWindowingList");
+    SetNextWindowSizeConstraints(ImVec2(g.IO.DisplaySize.x * 0.20f, g.IO.DisplaySize.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
+    SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
+    PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
+    Begin("###NavWindowingList", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings);
+    for (int n = g.Windows.Size - 1; n >= 0; n--)
+    {
+        ImGuiWindow* window = g.Windows[n];
+        if (!IsWindowNavFocusable(window))
+            continue;
+        const char* label = window->Name;
+        if (label == FindRenderedTextEnd(label))
+            label = GetFallbackWindowNameForWindowingList(window);
+        Selectable(label, g.NavWindowingTarget == window);
+    }
+    End();
+    PopStyleVar();
+}
+
+//-----------------------------------------------------------------------------
+// COLUMNS
+//-----------------------------------------------------------------------------
+
 void ImGui::NextColumn()
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -13627,94 +8103,6 @@
         BeginColumns(id, columns_count, flags);
 }
 
-void ImGui::Indent(float indent_w)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    window->DC.Indent.x += (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
-    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
-}
-
-void ImGui::Unindent(float indent_w)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    window->DC.Indent.x -= (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
-    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
-}
-
-void ImGui::TreePush(const char* str_id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    PushID(str_id ? str_id : "#TreePush");
-}
-
-void ImGui::TreePush(const void* ptr_id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    PushID(ptr_id ? ptr_id : (const void*)"#TreePush");
-}
-
-void ImGui::TreePushRawID(ImGuiID id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    window->IDStack.push_back(id);
-}
-
-void ImGui::TreePop()
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    Unindent();
-
-    window->DC.TreeDepth--;
-    if (g.NavMoveDir == ImGuiDir_Left && g.NavWindow == window && NavMoveRequestButNoResultYet())
-        if (g.NavIdIsAlive && (window->DC.TreeDepthMayJumpToParentOnPop & (1 << window->DC.TreeDepth)))
-        {
-            SetNavID(window->IDStack.back(), g.NavLayer);
-            NavMoveRequestCancel();
-        }
-    window->DC.TreeDepthMayJumpToParentOnPop &= (1 << window->DC.TreeDepth) - 1;
-
-    IM_ASSERT(window->IDStack.Size > 1); // There should always be 1 element in the IDStack (pushed during window creation). If this triggers you called TreePop/PopID too much.
-    PopID();
-}
-
-void ImGui::Value(const char* prefix, bool b)
-{
-    Text("%s: %s", prefix, (b ? "true" : "false"));
-}
-
-void ImGui::Value(const char* prefix, int v)
-{
-    Text("%s: %d", prefix, v);
-}
-
-void ImGui::Value(const char* prefix, unsigned int v)
-{
-    Text("%s: %d", prefix, v);
-}
-
-void ImGui::Value(const char* prefix, float v, const char* float_format)
-{
-    if (float_format)
-    {
-        char fmt[64];
-        ImFormatString(fmt, IM_ARRAYSIZE(fmt), "%%s: %s", float_format);
-        Text(fmt, prefix, v);
-    }
-    else
-    {
-        Text("%s: %.3f", prefix, v);
-    }
-}
-
 //-----------------------------------------------------------------------------
 // DRAG AND DROP
 //-----------------------------------------------------------------------------
@@ -14003,6 +8391,397 @@
 }
 
 //-----------------------------------------------------------------------------
+// LOGGING
+//-----------------------------------------------------------------------------
+
+// Pass text data straight to log (without being displayed)
+void ImGui::LogText(const char* fmt, ...)
+{
+    ImGuiContext& g = *GImGui;
+    if (!g.LogEnabled)
+        return;
+
+    va_list args;
+    va_start(args, fmt);
+    if (g.LogFile)
+        vfprintf(g.LogFile, fmt, args);
+    else
+        g.LogClipboard.appendfv(fmt, args);
+    va_end(args);
+}
+
+// Internal version that takes a position to decide on newline placement and pad items according to their depth.
+// We split text into individual lines to add current tree level padding
+void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    if (!text_end)
+        text_end = FindRenderedTextEnd(text, text_end);
+
+    const bool log_new_line = ref_pos && (ref_pos->y > window->DC.LogLinePosY + 1);
+    if (ref_pos)
+        window->DC.LogLinePosY = ref_pos->y;
+
+    const char* text_remaining = text;
+    if (g.LogStartDepth > window->DC.TreeDepth)  // Re-adjust padding if we have popped out of our starting depth
+        g.LogStartDepth = window->DC.TreeDepth;
+    const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth);
+    for (;;)
+    {
+        // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry.
+        const char* line_end = text_remaining;
+        while (line_end < text_end)
+            if (*line_end == '\n')
+                break;
+            else
+                line_end++;
+        if (line_end >= text_end)
+            line_end = NULL;
+
+        const bool is_first_line = (text == text_remaining);
+        bool is_last_line = false;
+        if (line_end == NULL)
+        {
+            is_last_line = true;
+            line_end = text_end;
+        }
+        if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
+        {
+            const int char_count = (int)(line_end - text_remaining);
+            if (log_new_line || !is_first_line)
+                LogText(IM_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining);
+            else
+                LogText(" %.*s", char_count, text_remaining);
+        }
+
+        if (is_last_line)
+            break;
+        text_remaining = line_end + 1;
+    }
+}
+
+// Start logging ImGui output to TTY
+void ImGui::LogToTTY(int max_depth)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = stdout;
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+// Start logging ImGui output to given file
+void ImGui::LogToFile(int max_depth, const char* filename)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    if (!filename)
+    {
+        filename = g.IO.LogFilename;
+        if (!filename)
+            return;
+    }
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = ImFileOpen(filename, "ab");
+    if (!g.LogFile)
+    {
+        IM_ASSERT(g.LogFile != NULL); // Consider this an error
+        return;
+    }
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+// Start logging ImGui output to clipboard
+void ImGui::LogToClipboard(int max_depth)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = NULL;
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+void ImGui::LogFinish()
+{
+    ImGuiContext& g = *GImGui;
+    if (!g.LogEnabled)
+        return;
+
+    LogText(IM_NEWLINE);
+    if (g.LogFile != NULL)
+    {
+        if (g.LogFile == stdout)
+            fflush(g.LogFile);
+        else
+            fclose(g.LogFile);
+        g.LogFile = NULL;
+    }
+    if (g.LogClipboard.size() > 1)
+    {
+        SetClipboardText(g.LogClipboard.begin());
+        g.LogClipboard.clear();
+    }
+    g.LogEnabled = false;
+}
+
+// Helper to display logging buttons
+void ImGui::LogButtons()
+{
+    ImGuiContext& g = *GImGui;
+
+    PushID("LogButtons");
+    const bool log_to_tty = Button("Log To TTY"); SameLine();
+    const bool log_to_file = Button("Log To File"); SameLine();
+    const bool log_to_clipboard = Button("Log To Clipboard"); SameLine();
+    PushItemWidth(80.0f);
+    PushAllowKeyboardFocus(false);
+    SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL);
+    PopAllowKeyboardFocus();
+    PopItemWidth();
+    PopID();
+
+    // Start logging at the end of the function so that the buttons don't appear in the log
+    if (log_to_tty)
+        LogToTTY(g.LogAutoExpandMaxDepth);
+    if (log_to_file)
+        LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename);
+    if (log_to_clipboard)
+        LogToClipboard(g.LogAutoExpandMaxDepth);
+}
+
+//-----------------------------------------------------------------------------
+// SETTINGS
+//-----------------------------------------------------------------------------
+
+void ImGui::MarkIniSettingsDirty()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.SettingsDirtyTimer <= 0.0f)
+        g.SettingsDirtyTimer = g.IO.IniSavingRate;
+}
+
+void ImGui::MarkIniSettingsDirty(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+    if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings))
+        if (g.SettingsDirtyTimer <= 0.0f)
+            g.SettingsDirtyTimer = g.IO.IniSavingRate;
+}
+
+static ImGuiWindowSettings* CreateNewWindowSettings(const char* name)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsWindows.push_back(ImGuiWindowSettings());
+    ImGuiWindowSettings* settings = &g.SettingsWindows.back();
+    settings->Name = ImStrdup(name);
+    settings->ID = ImHash(name, 0);
+    return settings;
+}
+
+ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = 0; i != g.SettingsWindows.Size; i++)
+        if (g.SettingsWindows[i].ID == id)
+            return &g.SettingsWindows[i];
+    return NULL;
+}
+
+void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
+{
+    size_t file_data_size = 0;
+    char* file_data = (char*)ImFileLoadToMemory(ini_filename, "rb", &file_data_size);
+    if (!file_data)
+        return;
+    LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
+    ImGui::MemFree(file_data);
+}
+
+ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
+{
+    ImGuiContext& g = *GImGui;
+    const ImGuiID type_hash = ImHash(type_name, 0, 0);
+    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
+        if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
+            return &g.SettingsHandlers[handler_n];
+    return NULL;
+}
+
+// Zero-tolerance, no error reporting, cheap .ini parsing
+void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.Initialized);
+    IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
+
+    // For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
+    // For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
+    if (ini_size == 0)
+        ini_size = strlen(ini_data);
+    char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
+    char* buf_end = buf + ini_size;
+    memcpy(buf, ini_data, ini_size);
+    buf[ini_size] = 0;
+
+    void* entry_data = NULL;
+    ImGuiSettingsHandler* entry_handler = NULL;
+
+    char* line_end = NULL;
+    for (char* line = buf; line < buf_end; line = line_end + 1)
+    {
+        // Skip new lines markers, then find end of the line
+        while (*line == '\n' || *line == '\r')
+            line++;
+        line_end = line;
+        while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
+            line_end++;
+        line_end[0] = 0;
+
+        if (line[0] == '[' && line_end > line && line_end[-1] == ']')
+        {
+            // Parse "[Type][Name]". Note that 'Name' can itself contains [] characters, which is acceptable with the current format and parsing code.
+            line_end[-1] = 0;
+            const char* name_end = line_end - 1;
+            const char* type_start = line + 1;
+            char* type_end = (char*)(intptr_t)ImStrchrRange(type_start, name_end, ']');
+            const char* name_start = type_end ? ImStrchrRange(type_end + 1, name_end, '[') : NULL;
+            if (!type_end || !name_start)
+            {
+                name_start = type_start; // Import legacy entries that have no type
+                type_start = "Window";
+            }
+            else
+            {
+                *type_end = 0; // Overwrite first ']'
+                name_start++;  // Skip second '['
+            }
+            entry_handler = FindSettingsHandler(type_start);
+            entry_data = entry_handler ? entry_handler->ReadOpenFn(&g, entry_handler, name_start) : NULL;
+        }
+        else if (entry_handler != NULL && entry_data != NULL)
+        {
+            // Let type handler parse the line
+            entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
+        }
+    }
+    ImGui::MemFree(buf);
+    g.SettingsLoaded = true;
+}
+
+void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsDirtyTimer = 0.0f;
+    if (!ini_filename)
+        return;
+
+    size_t ini_data_size = 0;
+    const char* ini_data = SaveIniSettingsToMemory(&ini_data_size);
+    FILE* f = ImFileOpen(ini_filename, "wt");
+    if (!f)
+        return;
+    fwrite(ini_data, sizeof(char), ini_data_size, f);
+    fclose(f);
+}
+
+// Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer
+const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsDirtyTimer = 0.0f;
+    g.SettingsIniData.Buf.resize(0);
+    g.SettingsIniData.Buf.push_back(0);
+    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
+    {
+        ImGuiSettingsHandler* handler = &g.SettingsHandlers[handler_n];
+        handler->WriteAllFn(&g, handler, &g.SettingsIniData);
+    }
+    if (out_size)
+        *out_size = (size_t)g.SettingsIniData.size();
+    return g.SettingsIniData.c_str();
+}
+
+static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
+{
+    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHash(name, 0));
+    if (!settings)
+        settings = CreateNewWindowSettings(name);
+    return (void*)settings;
+}
+
+static void SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
+{
+    ImGuiWindowSettings* settings = (ImGuiWindowSettings*)entry;
+    float x, y;
+    int i;
+    if (sscanf(line, "Pos=%f,%f", &x, &y) == 2)         settings->Pos = ImVec2(x, y);
+    else if (sscanf(line, "Size=%f,%f", &x, &y) == 2)   settings->Size = ImMax(ImVec2(x, y), GImGui->Style.WindowMinSize);
+    else if (sscanf(line, "Collapsed=%d", &i) == 1)     settings->Collapsed = (i != 0);
+}
+
+static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
+{
+    // Gather data from windows that were active during this session
+    ImGuiContext& g = *imgui_ctx;
+    for (int i = 0; i != g.Windows.Size; i++)
+    {
+        ImGuiWindow* window = g.Windows[i];
+        if (window->Flags & ImGuiWindowFlags_NoSavedSettings)
+            continue;
+
+        ImGuiWindowSettings* settings = (window->SettingsIdx != -1) ? &g.SettingsWindows[window->SettingsIdx] : ImGui::FindWindowSettings(window->ID);
+        if (!settings)
+        {
+            settings = CreateNewWindowSettings(window->Name);
+            window->SettingsIdx = g.SettingsWindows.index_from_pointer(settings);
+        }
+        IM_ASSERT(settings->ID == window->ID);
+        settings->Pos = window->Pos;
+        settings->Size = window->SizeFull;
+        settings->Collapsed = window->Collapsed;
+    }
+
+    // Write a buffer
+    // If a window wasn't opened in this session we preserve its settings
+    buf->reserve(buf->size() + g.SettingsWindows.Size * 96); // ballpark reserve
+    for (int i = 0; i != g.SettingsWindows.Size; i++)
+    {
+        const ImGuiWindowSettings* settings = &g.SettingsWindows[i];
+        if (settings->Pos.x == FLT_MAX)
+            continue;
+        const char* name = settings->Name;
+        if (const char* p = strstr(name, "###"))  // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID()
+            name = p;
+        buf->appendf("[%s][%s]\n", handler->TypeName, name);
+        buf->appendf("Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
+        buf->appendf("Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
+        buf->appendf("Collapsed=%d\n", settings->Collapsed);
+        buf->appendf("\n");
+    }
+}
+
+//-----------------------------------------------------------------------------
 // PLATFORM DEPENDENT HELPERS
 //-----------------------------------------------------------------------------
 
@@ -14119,7 +8898,7 @@
 #endif
 
 //-----------------------------------------------------------------------------
-// HELP, METRICS
+// METRICS/DEBUG WINDOW
 //-----------------------------------------------------------------------------
 
 void ImGui::ShowMetricsWindow(bool* p_open)

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj b/examples/example_win32_directx11/example_win32_directx11.vcxproj
index 9aa0986..166602a 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx11.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
index ab1e3fb..1df6a0c 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_dx11.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj b/examples/example_win32_directx12/example_win32_directx12.vcxproj
index c82f000..38c8335 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx12.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
index 43fdeba..28a2557 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj b/examples/example_win32_directx9/example_win32_directx9.vcxproj
index ebc8a92..08f21c8 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj
@@ -143,6 +143,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx9.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
index 2ac28d1..914cd26 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_dx9.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/imgui.cpp b/imgui.cpp
index 0b3ea0f..28b986a 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (main code and documentation)
 
 // Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp for demo code.
@@ -19,32 +19,58 @@
 
 /*
 
- Index
- - MISSION STATEMENT
- - END-USER GUIDE
- - PROGRAMMER GUIDE (read me!)
-   - Read first
-   - How to update to a newer version of Dear ImGui
-   - Getting started with integrating Dear ImGui in your code/engine
-   - Using gamepad/keyboard navigation controls [BETA]
- - API BREAKING CHANGES (read me when you update!)
- - ISSUES & TODO LIST
- - FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
-   - How can I tell whether to dispatch mouse/keyboard to imgui or to my application?
-   - How can I display an image? What is ImTextureID, how does it works?
-   - How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.
-   - How can I use my own math types instead of ImVec2/ImVec4? 
-   - How can I load a different font than the default?
-   - How can I easily use icons in my application?
-   - How can I load multiple fonts?
-   - How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
-   - How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
-   - I integrated Dear ImGui in my engine and the text or lines are blurry..
-   - I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
-   - How can I help?
- - ISSUES & TODO-LIST
- - CODE
+Index of this file:
 
+DOCUMENTATION
+- MISSION STATEMENT
+- END-USER GUIDE
+- PROGRAMMER GUIDE (read me!)
+  - Read first
+  - How to update to a newer version of Dear ImGui
+  - Getting started with integrating Dear ImGui in your code/engine
+  - Using gamepad/keyboard navigation controls [BETA]
+- API BREAKING CHANGES (read me when you update!)
+- FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
+  - How can I tell whether to dispatch mouse/keyboard to imgui or to my application?
+  - How can I display an image? What is ImTextureID, how does it works?
+  - How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.
+  - How can I use my own math types instead of ImVec2/ImVec4? 
+  - How can I load a different font than the default?
+  - How can I easily use icons in my application?
+  - How can I load multiple fonts?
+  - How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
+  - How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
+  - I integrated Dear ImGui in my engine and the text or lines are blurry..
+  - I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
+  - How can I help?
+
+CODE
+- Forward Declarations
+- Context and Memory Allocators
+- User facing structures (ImGuiStyle, ImGuiIO)
+- Helper/Utilities (ImXXX functions, Color functions)
+- ImGuiStorage
+- ImGuiTextFilter
+- ImGuiTextBuffer
+- ImGuiListClipper
+- Main Code (most of the code! lots of stuff, needs tidying up)
+- Tooltips
+- Popups
+- Navigation
+- Columns
+- Drag and Drop
+- Logging
+- Settings
+- Platform Dependent Helpers
+- Metrics/Debug window
+
+*/
+
+//-----------------------------------------------------------------------------
+// Documentation
+//-----------------------------------------------------------------------------
+
+/*
 
  MISSION STATEMENT
  =================
@@ -472,11 +498,6 @@
  - 2014/08/28 (1.09) - changed the behavior of IO.PixelCenterOffset following various rendering fixes
 
 
- ISSUES & TODO-LIST
- ==================
- See TODO.txt
-
-
  FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
  ======================================
 
@@ -824,7 +845,6 @@
 // Visual Studio warnings
 #ifdef _MSC_VER
 #pragma warning (disable: 4127) // condition expression is constant
-#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
 #pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
 #endif
 
@@ -852,24 +872,6 @@
 #endif
 #endif
 
-static const ImS32  IM_S32_MIN = INT_MIN;    // (-2147483647 - 1), (0x80000000);
-static const ImS32  IM_S32_MAX = INT_MAX;    // (2147483647), (0x7FFFFFFF)
-static const ImU32  IM_U32_MIN = 0;
-static const ImU32  IM_U32_MAX = UINT_MAX;   // (0xFFFFFFFF)
-#ifdef LLONG_MIN
-static const ImS64  IM_S64_MIN = LLONG_MIN;  // (-9223372036854775807ll - 1ll);
-static const ImS64  IM_S64_MAX = LLONG_MAX;  // (9223372036854775807ll);
-#else
-static const ImS64  IM_S64_MIN = -9223372036854775807LL - 1;
-static const ImS64  IM_S64_MAX = 9223372036854775807LL;
-#endif
-static const ImU64  IM_U64_MIN = 0;
-#ifdef ULLONG_MAX
-static const ImU64  IM_U64_MAX = ULLONG_MAX; // (0xFFFFFFFFFFFFFFFFull);
-#else
-static const ImU64  IM_U64_MAX = (2ULL * 9223372036854775807LL + 1);
-#endif
-
 // When using CTRL+TAB (or Gamepad Square+L/R) we delay the visual a little in order to reduce visual noise doing a fast switch.
 static const float NAV_WINDOWING_HIGHLIGHT_DELAY   = 0.20f; // Time before the highlight and screen dimming starts fading in
 static const float NAV_WINDOWING_LIST_APPEAR_DELAY = 0.15f; // Time before the window list starts to appear
@@ -884,7 +886,6 @@
 static void             SetWindowCollapsed(ImGuiWindow* window, bool collapsed, ImGuiCond cond);
 static void             FindHoveredWindow();
 static ImGuiWindow*     CreateNewWindow(const char* name, ImVec2 size, ImGuiWindowFlags flags);
-static ImGuiWindowSettings* CreateNewWindowSettings(const char* name);
 static void             CheckStacksSize(ImGuiWindow* window, bool write);
 static ImVec2           CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window, bool snap_on_edges);
 
@@ -894,13 +895,15 @@
 
 static ImRect           GetViewportRect();
 
-static bool             InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data);
-static int              InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end);
-static ImVec2           InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL, ImVec2* out_offset = NULL, bool stop_on_new_line = false);
+// Settings
+static void*            SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name);
+static void             SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line);
+static void             SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf);
 
-static inline int       DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format);
-static void             DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg_1, const void* arg_2);
-static bool             DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format);
+// Platform Dependents default implementation for IO functions
+static const char*      GetClipboardTextFn_DefaultImpl(void* user_data);
+static void             SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
+static void             ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
 
 namespace ImGui
 {
@@ -909,29 +912,20 @@
 static void             NavUpdate();
 static void             NavUpdateWindowing();
 static void             NavUpdateWindowingList();
+static void             NavUpdateMoveResult();
+static float            NavUpdatePageUpPageDown(int allowed_dir_flags);
+static inline void      NavUpdateAnyRequestFlag();
 static void             NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id);
+static ImVec2           NavCalcPreferredRefPos();
+static void             NavSaveLastChildNavWindow(ImGuiWindow* nav_window);
+static ImGuiWindow*     NavRestoreLastChildNavWindow(ImGuiWindow* window);
 
 static void             UpdateMouseInputs();
 static void             UpdateMouseWheel();
 static void             UpdateManualResize(ImGuiWindow* window, const ImVec2& size_auto_fit, int* border_held, int resize_grip_count, ImU32 resize_grip_col[4]);
-
-// Template widget behaviors
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool             DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power);
-
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool             SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb);
 }
 
 //-----------------------------------------------------------------------------
-// Platform dependent default implementations
-//-----------------------------------------------------------------------------
-
-static const char*      GetClipboardTextFn_DefaultImpl(void* user_data);
-static void             SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
-static void             ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
-
-//-----------------------------------------------------------------------------
 // Context and Memory Allocators
 //-----------------------------------------------------------------------------
 
@@ -961,7 +955,7 @@
 static void*    GImAllocatorUserData = NULL;
 
 //-----------------------------------------------------------------------------
-// User facing structures
+// User facing main structures
 //-----------------------------------------------------------------------------
 
 ImGuiStyle::ImGuiStyle()
@@ -1106,7 +1100,7 @@
 }
 
 //-----------------------------------------------------------------------------
-// HELPERS
+// HELPERS/UTILITIES
 //-----------------------------------------------------------------------------
 
 ImVec2 ImLineClosestPoint(const ImVec2& a, const ImVec2& b, const ImVec2& p)
@@ -1245,19 +1239,6 @@
     buf[p - p_start] = 0;                   // Zero terminate
 }
 
-template<typename TYPE>
-static const char* ImAtoi(const char* src, TYPE* output)
-{
-    int negative = 0;
-    if (*src == '-') { negative = 1; src++; }
-    if (*src == '+') { src++; }
-    TYPE v = 0;
-    while (*src >= '0' && *src <= '9')
-        v = (v * 10) + (*src++ - '0');
-    *output = negative ? -v : v;
-    return src;
-}
-
 // A) MSVC version appears to return -1 on overflow, whereas glibc appears to return total count (which may be >= buf_size).
 // Ideally we would test for only one of those limits at runtime depending on the behavior the vsnprintf(), but trying to deduct it at compile time sounds like a pandora can of worm.
 // B) When buf==NULL vsnprintf() will return the output size.
@@ -1338,7 +1319,7 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImText* helpers
+// HELPERS/UTILITIES (ImText* helpers)
 //-----------------------------------------------------------------------------
 
 // Convert UTF-8 to 32-bits character, process single character input.
@@ -1520,109 +1501,6 @@
     return bytes_count;
 }
 
-ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
-{
-    float s = 1.0f/255.0f;
-    return ImVec4(
-        ((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
-}
-
-ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
-{
-    ImU32 out;
-    out  = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
-    return out;
-}
-
-ImU32 ImGui::GetColorU32(ImGuiCol idx, float alpha_mul)
-{
-    ImGuiStyle& style = GImGui->Style;
-    ImVec4 c = style.Colors[idx];
-    c.w *= style.Alpha * alpha_mul;
-    return ColorConvertFloat4ToU32(c);
-}
-
-ImU32 ImGui::GetColorU32(const ImVec4& col)
-{
-    ImGuiStyle& style = GImGui->Style;
-    ImVec4 c = col;
-    c.w *= style.Alpha;
-    return ColorConvertFloat4ToU32(c);
-}
-
-const ImVec4& ImGui::GetStyleColorVec4(ImGuiCol idx)
-{
-    ImGuiStyle& style = GImGui->Style;
-    return style.Colors[idx];
-}
-
-ImU32 ImGui::GetColorU32(ImU32 col)
-{
-    float style_alpha = GImGui->Style.Alpha;
-    if (style_alpha >= 1.0f)
-        return col;
-    ImU32 a = (col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT;
-    a = (ImU32)(a * style_alpha); // We don't need to clamp 0..255 because Style.Alpha is in 0..1 range.
-    return (col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
-}
-
-// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
-// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
-void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
-{
-    float K = 0.f;
-    if (g < b)
-    {
-        ImSwap(g, b);
-        K = -1.f;
-    }
-    if (r < g)
-    {
-        ImSwap(r, g);
-        K = -2.f / 6.f - K;
-    }
-
-    const float chroma = r - (g < b ? g : b);
-    out_h = ImFabs(K + (g - b) / (6.f * chroma + 1e-20f));
-    out_s = chroma / (r + 1e-20f);
-    out_v = r;
-}
-
-// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
-// also http://en.wikipedia.org/wiki/HSL_and_HSV
-void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
-{
-    if (s == 0.0f)
-    {
-        // gray
-        out_r = out_g = out_b = v;
-        return;
-    }
-
-    h = ImFmod(h, 1.0f) / (60.0f/360.0f);
-    int   i = (int)h;
-    float f = h - (float)i;
-    float p = v * (1.0f - s);
-    float q = v * (1.0f - s * f);
-    float t = v * (1.0f - s * (1.0f - f));
-
-    switch (i)
-    {
-    case 0: out_r = v; out_g = t; out_b = p; break;
-    case 1: out_r = q; out_g = v; out_b = p; break;
-    case 2: out_r = p; out_g = v; out_b = t; break;
-    case 3: out_r = p; out_g = q; out_b = v; break;
-    case 4: out_r = t; out_g = p; out_b = v; break;
-    case 5: default: out_r = v; out_g = p; out_b = q; break;
-    }
-}
-
 FILE* ImFileOpen(const char* filename, const char* mode)
 {
 #if defined(_WIN32) && !defined(__CYGWIN__)
@@ -1682,6 +1560,113 @@
 }
 
 //-----------------------------------------------------------------------------
+// COLOR FUNCTIONS
+//-----------------------------------------------------------------------------
+
+ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
+{
+    float s = 1.0f/255.0f;
+    return ImVec4(
+        ((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
+}
+
+ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
+{
+    ImU32 out;
+    out  = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
+    return out;
+}
+
+// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
+// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
+void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
+{
+    float K = 0.f;
+    if (g < b)
+    {
+        ImSwap(g, b);
+        K = -1.f;
+    }
+    if (r < g)
+    {
+        ImSwap(r, g);
+        K = -2.f / 6.f - K;
+    }
+
+    const float chroma = r - (g < b ? g : b);
+    out_h = ImFabs(K + (g - b) / (6.f * chroma + 1e-20f));
+    out_s = chroma / (r + 1e-20f);
+    out_v = r;
+}
+
+// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
+// also http://en.wikipedia.org/wiki/HSL_and_HSV
+void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
+{
+    if (s == 0.0f)
+    {
+        // gray
+        out_r = out_g = out_b = v;
+        return;
+    }
+
+    h = ImFmod(h, 1.0f) / (60.0f/360.0f);
+    int   i = (int)h;
+    float f = h - (float)i;
+    float p = v * (1.0f - s);
+    float q = v * (1.0f - s * f);
+    float t = v * (1.0f - s * (1.0f - f));
+
+    switch (i)
+    {
+    case 0: out_r = v; out_g = t; out_b = p; break;
+    case 1: out_r = q; out_g = v; out_b = p; break;
+    case 2: out_r = p; out_g = v; out_b = t; break;
+    case 3: out_r = p; out_g = q; out_b = v; break;
+    case 4: out_r = t; out_g = p; out_b = v; break;
+    case 5: default: out_r = v; out_g = p; out_b = q; break;
+    }
+}
+
+ImU32 ImGui::GetColorU32(ImGuiCol idx, float alpha_mul)
+{
+    ImGuiStyle& style = GImGui->Style;
+    ImVec4 c = style.Colors[idx];
+    c.w *= style.Alpha * alpha_mul;
+    return ColorConvertFloat4ToU32(c);
+}
+
+ImU32 ImGui::GetColorU32(const ImVec4& col)
+{
+    ImGuiStyle& style = GImGui->Style;
+    ImVec4 c = col;
+    c.w *= style.Alpha;
+    return ColorConvertFloat4ToU32(c);
+}
+
+const ImVec4& ImGui::GetStyleColorVec4(ImGuiCol idx)
+{
+    ImGuiStyle& style = GImGui->Style;
+    return style.Colors[idx];
+}
+
+ImU32 ImGui::GetColorU32(ImU32 col)
+{
+    float style_alpha = GImGui->Style.Alpha;
+    if (style_alpha >= 1.0f)
+        return col;
+    ImU32 a = (col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT;
+    a = (ImU32)(a * style_alpha); // We don't need to clamp 0..255 because Style.Alpha is in 0..1 range.
+    return (col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
+}
+
+//-----------------------------------------------------------------------------
 // ImGuiStorage
 // Helper: Key->value storage
 //-----------------------------------------------------------------------------
@@ -1983,51 +1968,6 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImGuiSimpleColumns (internal use only)
-//-----------------------------------------------------------------------------
-
-ImGuiMenuColumns::ImGuiMenuColumns()
-{
-    Count = 0;
-    Spacing = Width = NextWidth = 0.0f;
-    memset(Pos, 0, sizeof(Pos));
-    memset(NextWidths, 0, sizeof(NextWidths));
-}
-
-void ImGuiMenuColumns::Update(int count, float spacing, bool clear)
-{
-    IM_ASSERT(Count <= IM_ARRAYSIZE(Pos));
-    Count = count;
-    Width = NextWidth = 0.0f;
-    Spacing = spacing;
-    if (clear) memset(NextWidths, 0, sizeof(NextWidths));
-    for (int i = 0; i < Count; i++)
-    {
-        if (i > 0 && NextWidths[i] > 0.0f)
-            Width += Spacing;
-        Pos[i] = (float)(int)Width;
-        Width += NextWidths[i];
-        NextWidths[i] = 0.0f;
-    }
-}
-
-float ImGuiMenuColumns::DeclColumns(float w0, float w1, float w2) // not using va_arg because they promote float to double
-{
-    NextWidth = 0.0f;
-    NextWidths[0] = ImMax(NextWidths[0], w0);
-    NextWidths[1] = ImMax(NextWidths[1], w1);
-    NextWidths[2] = ImMax(NextWidths[2], w2);
-    for (int i = 0; i < 3; i++)
-        NextWidth += NextWidths[i] + ((i > 0 && NextWidths[i] > 0.0f) ? Spacing : 0.0f);
-    return ImMax(Width, NextWidth);
-}
-
-float ImGuiMenuColumns::CalcExtraSpace(float avail_w)
-{
-    return ImMax(0.0f, avail_w - Width);
-}
-
-//-----------------------------------------------------------------------------
 // ImGuiListClipper
 //-----------------------------------------------------------------------------
 
@@ -2112,9 +2052,11 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImGuiWindow
+// MAIN CODE
+// (this category is still too large and badly ordered, needs some tidying up)
 //-----------------------------------------------------------------------------
 
+// ImGuiWindow is mostly a dumb struct. It merely has a constructor and a few helper methods
 ImGuiWindow::ImGuiWindow(ImGuiContext* context, const char* name)
     : DrawListInst(&context->DrawListSharedData)
 {
@@ -2222,10 +2164,6 @@
     return id;
 }
 
-//-----------------------------------------------------------------------------
-// Internal API exposed in imgui_internal.h
-//-----------------------------------------------------------------------------
-
 static void SetCurrentWindow(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -2393,285 +2331,6 @@
     ItemSize(bb.GetSize(), text_offset_y);
 }
 
-static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
-{
-    if (ImFabs(dx) > ImFabs(dy))
-        return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
-    return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
-}
-
-static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
-{
-    if (a1 < b0)
-        return a1 - b0;
-    if (b1 < a0)
-        return a0 - b1;
-    return 0.0f;
-}
-
-static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
-{
-    if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
-    {
-        r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
-        r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
-    }
-    else
-    {
-        r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
-        r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
-    }
-}
-
-// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
-static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    if (g.NavLayer != window->DC.NavLayerCurrent)
-        return false;
-
-    const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
-    g.NavScoringCount++;
-
-    // When entering through a NavFlattened border, we consider child window items as fully clipped for scoring
-    if (window->ParentWindow == g.NavWindow)
-    {
-        IM_ASSERT((window->Flags | g.NavWindow->Flags) & ImGuiWindowFlags_NavFlattened);
-        if (!window->ClipRect.Contains(cand))
-            return false;
-        cand.ClipWithFull(window->ClipRect); // This allows the scored item to not overlap other candidates in the parent window
-    }
-
-    // We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
-    // For example, this ensure that items in one column are not reached when moving vertically from items in another column.
-    NavClampRectToVisibleAreaForMoveDir(g.NavMoveClipDir, cand, window->ClipRect);
-
-    // Compute distance between boxes
-    // FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
-    float dbx = NavScoreItemDistInterval(cand.Min.x, cand.Max.x, curr.Min.x, curr.Max.x);
-    float dby = NavScoreItemDistInterval(ImLerp(cand.Min.y, cand.Max.y, 0.2f), ImLerp(cand.Min.y, cand.Max.y, 0.8f), ImLerp(curr.Min.y, curr.Max.y, 0.2f), ImLerp(curr.Min.y, curr.Max.y, 0.8f)); // Scale down on Y to keep using box-distance for vertically touching items
-    if (dby != 0.0f && dbx != 0.0f)
-       dbx = (dbx/1000.0f) + ((dbx > 0.0f) ? +1.0f : -1.0f);
-    float dist_box = ImFabs(dbx) + ImFabs(dby);
-
-    // Compute distance between centers (this is off by a factor of 2, but we only compare center distances with each other so it doesn't matter)
-    float dcx = (cand.Min.x + cand.Max.x) - (curr.Min.x + curr.Max.x);
-    float dcy = (cand.Min.y + cand.Max.y) - (curr.Min.y + curr.Max.y);
-    float dist_center = ImFabs(dcx) + ImFabs(dcy); // L1 metric (need this for our connectedness guarantee)
-
-    // Determine which quadrant of 'curr' our candidate item 'cand' lies in based on distance
-    ImGuiDir quadrant;
-    float dax = 0.0f, day = 0.0f, dist_axial = 0.0f;
-    if (dbx != 0.0f || dby != 0.0f)
-    {
-        // For non-overlapping boxes, use distance between boxes
-        dax = dbx;
-        day = dby;
-        dist_axial = dist_box;
-        quadrant = NavScoreItemGetQuadrant(dbx, dby);
-    }
-    else if (dcx != 0.0f || dcy != 0.0f)
-    {
-        // For overlapping boxes with different centers, use distance between centers
-        dax = dcx;
-        day = dcy;
-        dist_axial = dist_center;
-        quadrant = NavScoreItemGetQuadrant(dcx, dcy);
-    }
-    else
-    {
-        // Degenerate case: two overlapping buttons with same center, break ties arbitrarily (note that LastItemId here is really the _previous_ item order, but it doesn't matter)
-        quadrant = (window->DC.LastItemId < g.NavId) ? ImGuiDir_Left : ImGuiDir_Right;
-    }
-
-#if IMGUI_DEBUG_NAV_SCORING
-    char buf[128];
-    if (ImGui::IsMouseHoveringRect(cand.Min, cand.Max))
-    {
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "dbox (%.2f,%.2f->%.4f)\ndcen (%.2f,%.2f->%.4f)\nd (%.2f,%.2f->%.4f)\nnav %c, quadrant %c", dbx, dby, dist_box, dcx, dcy, dist_center, dax, day, dist_axial, "WENS"[g.NavMoveDir], "WENS"[quadrant]);
-        ImDrawList* draw_list = ImGui::GetOverlayDrawList();
-        draw_list->AddRect(curr.Min, curr.Max, IM_COL32(255,200,0,100));
-        draw_list->AddRect(cand.Min, cand.Max, IM_COL32(255,255,0,200));
-        draw_list->AddRectFilled(cand.Max-ImVec2(4,4), cand.Max+ImGui::CalcTextSize(buf)+ImVec2(4,4), IM_COL32(40,0,0,150));
-        draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Max, ~0U, buf);
-    }
-    else if (g.IO.KeyCtrl) // Hold to preview score in matching quadrant. Press C to rotate.
-    {
-        if (IsKeyPressedMap(ImGuiKey_C)) { g.NavMoveDirLast = (ImGuiDir)((g.NavMoveDirLast + 1) & 3); g.IO.KeysDownDuration[g.IO.KeyMap[ImGuiKey_C]] = 0.01f; }
-        if (quadrant == g.NavMoveDir)
-        {
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "%.0f/%.0f", dist_box, dist_center);
-            ImDrawList* draw_list = ImGui::GetOverlayDrawList();
-            draw_list->AddRectFilled(cand.Min, cand.Max, IM_COL32(255, 0, 0, 200));
-            draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Min, IM_COL32(255, 255, 255, 255), buf);
-        }
-    }
- #endif
-
-    // Is it in the quadrant we're interesting in moving to?
-    bool new_best = false;
-    if (quadrant == g.NavMoveDir)
-    {
-        // Does it beat the current best candidate?
-        if (dist_box < result->DistBox)
-        {
-            result->DistBox = dist_box;
-            result->DistCenter = dist_center;
-            return true;
-        }
-        if (dist_box == result->DistBox)
-        {
-            // Try using distance between center points to break ties
-            if (dist_center < result->DistCenter)
-            {
-                result->DistCenter = dist_center;
-                new_best = true;
-            }
-            else if (dist_center == result->DistCenter)
-            {
-                // Still tied! we need to be extra-careful to make sure everything gets linked properly. We consistently break ties by symbolically moving "later" items
-                // (with higher index) to the right/downwards by an infinitesimal amount since we the current "best" button already (so it must have a lower index),
-                // this is fairly easy. This rule ensures that all buttons with dx==dy==0 will end up being linked in order of appearance along the x axis.
-                if (((g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down) ? dby : dbx) < 0.0f) // moving bj to the right/down decreases distance
-                    new_best = true;
-            }
-        }
-    }
-
-    // Axial check: if 'curr' has no link at all in some direction and 'cand' lies roughly in that direction, add a tentative link. This will only be kept if no "real" matches
-    // are found, so it only augments the graph produced by the above method using extra links. (important, since it doesn't guarantee strong connectedness)
-    // This is just to avoid buttons having no links in a particular direction when there's a suitable neighbor. you get good graphs without this too.
-    // 2017/09/29: FIXME: This now currently only enabled inside menu bars, ideally we'd disable it everywhere. Menus in particular need to catch failure. For general navigation it feels awkward.
-    // Disabling it may lead to disconnected graphs when nodes are very spaced out on different axis. Perhaps consider offering this as an option?
-    if (result->DistBox == FLT_MAX && dist_axial < result->DistAxial)  // Check axial match
-        if (g.NavLayer == 1 && !(g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
-            if ((g.NavMoveDir == ImGuiDir_Left && dax < 0.0f) || (g.NavMoveDir == ImGuiDir_Right && dax > 0.0f) || (g.NavMoveDir == ImGuiDir_Up && day < 0.0f) || (g.NavMoveDir == ImGuiDir_Down && day > 0.0f))
-            {
-                result->DistAxial = dist_axial;
-                new_best = true;
-            }
-
-    return new_best;
-}
-
-static void NavSaveLastChildNavWindow(ImGuiWindow* child_window)
-{
-    ImGuiWindow* parent_window = child_window;
-    while (parent_window && (parent_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (parent_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
-        parent_window = parent_window->ParentWindow;
-    if (parent_window && parent_window != child_window)
-        parent_window->NavLastChildNavWindow = child_window;
-}
-
-// Call when we are expected to land on Layer 0 after FocusWindow()
-static ImGuiWindow* NavRestoreLastChildNavWindow(ImGuiWindow* window)
-{
-    return window->NavLastChildNavWindow ? window->NavLastChildNavWindow : window;
-}
-
-static void NavRestoreLayer(int layer)
-{
-    ImGuiContext& g = *GImGui;
-    g.NavLayer = layer;
-    if (layer == 0)
-        g.NavWindow = NavRestoreLastChildNavWindow(g.NavWindow);
-    if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
-        ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
-    else
-        ImGui::NavInitWindow(g.NavWindow, true);
-}
-
-static inline void NavUpdateAnyRequestFlag()
-{
-    ImGuiContext& g = *GImGui;
-    g.NavAnyRequest = g.NavMoveRequest || g.NavInitRequest || (IMGUI_DEBUG_NAV_SCORING && g.NavWindow != NULL);
-    if (g.NavAnyRequest)
-        IM_ASSERT(g.NavWindow != NULL);
-}
-
-bool ImGui::NavMoveRequestButNoResultYet()
-{
-    ImGuiContext& g = *GImGui;
-    return g.NavMoveRequest && g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0;
-}
-
-void ImGui::NavMoveRequestCancel()
-{
-    ImGuiContext& g = *GImGui;
-    g.NavMoveRequest = false;
-    NavUpdateAnyRequestFlag();
-}
-
-// We get there when either NavId == id, or when g.NavAnyRequest is set (which is updated by NavUpdateAnyRequestFlag above)
-static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    //if (!g.IO.NavActive)  // [2017/10/06] Removed this possibly redundant test but I am not sure of all the side-effects yet. Some of the feature here will need to work regardless of using a _NoNavInputs flag.
-    //    return;
-
-    const ImGuiItemFlags item_flags = window->DC.ItemFlags;
-    const ImRect nav_bb_rel(nav_bb.Min - window->Pos, nav_bb.Max - window->Pos);
-
-    // Process Init Request
-    if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
-    {
-        // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
-        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
-        {
-            g.NavInitResultId = id;
-            g.NavInitResultRectRel = nav_bb_rel;
-        }
-        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
-        {
-            g.NavInitRequest = false; // Found a match, clear request
-            NavUpdateAnyRequestFlag();
-        }
-    }
-
-    // Process Move Request (scoring for navigation)
-    // FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
-    if ((g.NavId != id || (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AllowCurrentNavId)) && !(item_flags & ImGuiItemFlags_NoNav))
-    {
-        ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
-#if IMGUI_DEBUG_NAV_SCORING
-        // [DEBUG] Score all items in NavWindow at all times
-        if (!g.NavMoveRequest)
-            g.NavMoveDir = g.NavMoveDirLast;
-        bool new_best = NavScoreItem(result, nav_bb) && g.NavMoveRequest;
-#else
-        bool new_best = g.NavMoveRequest && NavScoreItem(result, nav_bb);
-#endif
-        if (new_best)
-        {
-            result->ID = id;
-            result->Window = window;
-            result->RectRel = nav_bb_rel;
-        }
-
-        const float VISIBLE_RATIO = 0.70f;
-        if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
-            if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
-                if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
-                {
-                    result = &g.NavMoveResultLocalVisibleSet;
-                    result->ID = id;
-                    result->Window = window;
-                    result->RectRel = nav_bb_rel;
-                }
-    }
-
-    // Update window-relative bounding box of navigated item
-    if (g.NavId == id)
-    {
-        g.NavWindow = window;                                           // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
-        g.NavLayer = window->DC.NavLayerCurrent;
-        g.NavIdIsAlive = true;
-        g.NavIdTabCounter = window->FocusIdxTabCounter;
-        window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel;    // Store item bounding box (relative to window position)
-    }
-}
-
 // Declare item bounding box for clipping and interaction.
 // Note that the size can be different than the one provided to ItemSize(). Typically, widgets that spread over available surface
 // declare their minimum size requirement to ItemSize() and then use a larger region for drawing/interaction, which is passed to ItemAdd().
@@ -2972,662 +2631,6 @@
     return &GImGui->DrawListSharedData;
 }
 
-// This needs to be called before we submit any widget (aka in or before Begin)
-void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(window == g.NavWindow);
-    bool init_for_nav = false;
-    if (!(window->Flags & ImGuiWindowFlags_NoNavInputs))
-        if (!(window->Flags & ImGuiWindowFlags_ChildWindow) || (window->Flags & ImGuiWindowFlags_Popup) || (window->NavLastIds[0] == 0) || force_reinit)
-            init_for_nav = true;
-    if (init_for_nav)
-    {
-        SetNavID(0, g.NavLayer);
-        g.NavInitRequest = true;
-        g.NavInitRequestFromMove = false;
-        g.NavInitResultId = 0;
-        g.NavInitResultRectRel = ImRect();
-        NavUpdateAnyRequestFlag();
-    }
-    else
-    {
-        g.NavId = window->NavLastIds[0];
-    }
-}
-
-static ImVec2 NavCalcPreferredRefPos()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow)
-        return ImFloor(g.IO.MousePos);
-
-    // When navigation is active and mouse is disabled, decide on an arbitrary position around the bottom left of the currently navigated item
-    const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
-    ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x*4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
-    ImRect visible_rect = GetViewportRect();
-    return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
-}
-
-static int FindWindowIndex(ImGuiWindow* window) // FIXME-OPT O(N)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = g.Windows.Size-1; i >= 0; i--)
-        if (g.Windows[i] == window)
-            return i;
-    return -1;
-}
-
-static ImGuiWindow* FindWindowNavFocusable(int i_start, int i_stop, int dir) // FIXME-OPT O(N)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = i_start; i >= 0 && i < g.Windows.Size && i != i_stop; i += dir)
-        if (ImGui::IsWindowNavFocusable(g.Windows[i]))
-            return g.Windows[i];
-    return NULL;
-}
-
-float ImGui::GetNavInputAmount(ImGuiNavInput n, ImGuiInputReadMode mode)
-{
-    ImGuiContext& g = *GImGui;
-    if (mode == ImGuiInputReadMode_Down)
-        return g.IO.NavInputs[n];                         // Instant, read analog input (0.0f..1.0f, as provided by user)
-
-    const float t = g.IO.NavInputsDownDuration[n];
-    if (t < 0.0f && mode == ImGuiInputReadMode_Released)  // Return 1.0f when just released, no repeat, ignore analog input.
-        return (g.IO.NavInputsDownDurationPrev[n] >= 0.0f ? 1.0f : 0.0f);
-    if (t < 0.0f)
-        return 0.0f;
-    if (mode == ImGuiInputReadMode_Pressed)               // Return 1.0f when just pressed, no repeat, ignore analog input.
-        return (t == 0.0f) ? 1.0f : 0.0f;
-    if (mode == ImGuiInputReadMode_Repeat)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
-    if (mode == ImGuiInputReadMode_RepeatSlow)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 1.00f, g.IO.KeyRepeatRate * 2.00f);
-    if (mode == ImGuiInputReadMode_RepeatFast)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.30f);
-    return 0.0f;
-}
-
-ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor, float fast_factor)
-{
-    ImVec2 delta(0.0f, 0.0f);
-    if (dir_sources & ImGuiNavDirSourceFlags_Keyboard)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_KeyRight_, mode)   - GetNavInputAmount(ImGuiNavInput_KeyLeft_,   mode), GetNavInputAmount(ImGuiNavInput_KeyDown_,   mode) - GetNavInputAmount(ImGuiNavInput_KeyUp_,   mode));
-    if (dir_sources & ImGuiNavDirSourceFlags_PadDPad)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_DpadRight, mode)   - GetNavInputAmount(ImGuiNavInput_DpadLeft,   mode), GetNavInputAmount(ImGuiNavInput_DpadDown,   mode) - GetNavInputAmount(ImGuiNavInput_DpadUp,   mode));
-    if (dir_sources & ImGuiNavDirSourceFlags_PadLStick)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_LStickRight, mode) - GetNavInputAmount(ImGuiNavInput_LStickLeft, mode), GetNavInputAmount(ImGuiNavInput_LStickDown, mode) - GetNavInputAmount(ImGuiNavInput_LStickUp, mode));
-    if (slow_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakSlow))
-        delta *= slow_factor;
-    if (fast_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakFast))
-        delta *= fast_factor;
-    return delta;
-}
-
-static void NavUpdateWindowingHighlightWindow(int focus_change_dir)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavWindowingTarget);
-    if (g.NavWindowingTarget->Flags & ImGuiWindowFlags_Modal)
-        return;
-
-    const int i_current = FindWindowIndex(g.NavWindowingTarget);
-    ImGuiWindow* window_target = FindWindowNavFocusable(i_current + focus_change_dir, -INT_MAX, focus_change_dir);
-    if (!window_target)
-        window_target = FindWindowNavFocusable((focus_change_dir < 0) ? (g.Windows.Size - 1) : 0, i_current, focus_change_dir);
-    if (window_target) // Don't reset windowing target if there's a single window in the list
-        g.NavWindowingTarget = g.NavWindowingTargetAnim = window_target;
-    g.NavWindowingToggleLayer = false;
-}
-
-// Window management mode (hold to: change focus/move/resize, tap to: toggle menu layer)
-static void ImGui::NavUpdateWindowing()
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* apply_focus_window = NULL;
-    bool apply_toggle_layer = false;
-
-    ImGuiWindow* modal_window = GetFrontMostPopupModal();
-    if (modal_window != NULL)
-    {
-        g.NavWindowingTarget = NULL;
-        return;
-    }
-
-    // Fade out
-    if (g.NavWindowingTargetAnim && g.NavWindowingTarget == NULL)
-    {
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha - g.IO.DeltaTime * 10.0f, 0.0f);
-        if (g.DimBgRatio <= 0.0f && g.NavWindowingHighlightAlpha <= 0.0f)
-            g.NavWindowingTargetAnim = NULL;
-    }
-
-    // Start CTRL-TAB or Square+L/R window selection
-    bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
-    bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
-    if (start_windowing_with_gamepad || start_windowing_with_keyboard)
-        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.Windows.Size - 1, -INT_MAX, -1))
-        {
-            g.NavWindowingTarget = g.NavWindowingTargetAnim = window;
-            g.NavWindowingTimer = g.NavWindowingHighlightAlpha = 0.0f;
-            g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
-            g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
-        }
-
-    // Gamepad update
-    g.NavWindowingTimer += g.IO.DeltaTime;
-    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavGamepad)
-    {
-        // Highlight only appears after a brief time holding the button, so that a fast tap on PadMenu (to toggle NavLayer) doesn't add visual noise
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f));
-
-        // Select window to focus
-        const int focus_change_dir = (int)IsNavInputPressed(ImGuiNavInput_FocusPrev, ImGuiInputReadMode_RepeatSlow) - (int)IsNavInputPressed(ImGuiNavInput_FocusNext, ImGuiInputReadMode_RepeatSlow);
-        if (focus_change_dir != 0)
-        {
-            NavUpdateWindowingHighlightWindow(focus_change_dir);
-            g.NavWindowingHighlightAlpha = 1.0f;
-        }
-
-        // Single press toggles NavLayer, long press with L/R apply actual focus on release (until then the window was merely rendered front-most)
-        if (!IsNavInputDown(ImGuiNavInput_Menu))
-        {
-            g.NavWindowingToggleLayer &= (g.NavWindowingHighlightAlpha < 1.0f); // Once button was held long enough we don't consider it a tap-to-toggle-layer press anymore.
-            if (g.NavWindowingToggleLayer && g.NavWindow)
-                apply_toggle_layer = true;
-            else if (!g.NavWindowingToggleLayer)
-                apply_focus_window = g.NavWindowingTarget;
-            g.NavWindowingTarget = NULL;
-        }
-    }
-
-    // Keyboard: Focus
-    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavKeyboard)
-    {
-        // Visuals only appears after a brief time after pressing TAB the first time, so that a fast CTRL+TAB doesn't add visual noise
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f)); // 1.0f
-        if (IsKeyPressedMap(ImGuiKey_Tab, true))
-            NavUpdateWindowingHighlightWindow(g.IO.KeyShift ? +1 : -1);
-        if (!g.IO.KeyCtrl)
-            apply_focus_window = g.NavWindowingTarget;
-    }
-
-    // Keyboard: Press and Release ALT to toggle menu layer
-    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
-    if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && IsNavInputPressed(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))
-        if (IsMousePosValid(&g.IO.MousePos) == IsMousePosValid(&g.IO.MousePosPrev))
-            apply_toggle_layer = true;
-
-    // Move window
-    if (g.NavWindowingTarget && !(g.NavWindowingTarget->Flags & ImGuiWindowFlags_NoMove))
-    {
-        ImVec2 move_delta;
-        if (g.NavInputSource == ImGuiInputSource_NavKeyboard && !g.IO.KeyShift)
-            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard, ImGuiInputReadMode_Down);
-        if (g.NavInputSource == ImGuiInputSource_NavGamepad)
-            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down);
-        if (move_delta.x != 0.0f || move_delta.y != 0.0f)
-        {
-            const float NAV_MOVE_SPEED = 800.0f;
-            const float move_speed = ImFloor(NAV_MOVE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); // FIXME: Doesn't code variable framerate very well
-            g.NavWindowingTarget->RootWindow->Pos += move_delta * move_speed;
-            g.NavDisableMouseHover = true;
-            MarkIniSettingsDirty(g.NavWindowingTarget);
-        }
-    }
-
-    // Apply final focus
-    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
-    {
-        g.NavDisableHighlight = false;
-        g.NavDisableMouseHover = true;
-        apply_focus_window = NavRestoreLastChildNavWindow(apply_focus_window);
-        ClosePopupsOverWindow(apply_focus_window);
-        FocusWindow(apply_focus_window);
-        if (apply_focus_window->NavLastIds[0] == 0)
-            NavInitWindow(apply_focus_window, false);
-
-        // If the window only has a menu layer, select it directly
-        if (apply_focus_window->DC.NavLayerActiveMask == (1 << 1))
-            g.NavLayer = 1;
-    }
-    if (apply_focus_window)
-        g.NavWindowingTarget = NULL;
-
-    // Apply menu/layer toggle
-    if (apply_toggle_layer && g.NavWindow)
-    {
-        // Move to parent menu if necessary
-        ImGuiWindow* new_nav_window = g.NavWindow;
-        while ((new_nav_window->DC.NavLayerActiveMask & (1 << 1)) == 0 && (new_nav_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (new_nav_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
-            new_nav_window = new_nav_window->ParentWindow;
-
-        if (new_nav_window != g.NavWindow)
-        {
-            ImGuiWindow* old_nav_window = g.NavWindow;
-            FocusWindow(new_nav_window);
-            new_nav_window->NavLastChildNavWindow = old_nav_window;
-        }
-        g.NavDisableHighlight = false;
-        g.NavDisableMouseHover = true;
-        NavRestoreLayer((g.NavWindow->DC.NavLayerActiveMask & (1 << 1)) ? (g.NavLayer ^ 1) : 0);
-    }
-}
-
-// Window has already passed the IsWindowNavFocusable()
-static const char* GetFallbackWindowNameForWindowingList(ImGuiWindow* window)
-{
-    if (window->Flags & ImGuiWindowFlags_Popup)
-        return "(Popup)";
-    if ((window->Flags & ImGuiWindowFlags_MenuBar) && strcmp(window->Name, "##MainMenuBar") == 0)
-        return "(Main menu bar)";
-    return "(Untitled)";
-}
-
-// Overlay displayed when using CTRL+TAB. Called by EndFrame().
-void ImGui::NavUpdateWindowingList()
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavWindowingTarget != NULL);
-
-    if (g.NavWindowingTimer < NAV_WINDOWING_LIST_APPEAR_DELAY)
-        return;
-
-    if (g.NavWindowingList == NULL)
-        g.NavWindowingList = FindWindowByName("###NavWindowingList");
-    SetNextWindowSizeConstraints(ImVec2(g.IO.DisplaySize.x * 0.20f, g.IO.DisplaySize.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
-    SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
-    PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
-    Begin("###NavWindowingList", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings);
-    for (int n = g.Windows.Size - 1; n >= 0; n--)
-    {
-        ImGuiWindow* window = g.Windows[n];
-        if (!IsWindowNavFocusable(window))
-            continue;
-        const char* label = window->Name;
-        if (label == FindRenderedTextEnd(label))
-            label = GetFallbackWindowNameForWindowingList(window);
-        Selectable(label, g.NavWindowingTarget == window);
-    }
-    End();
-    PopStyleVar();
-}
-
-// Scroll to keep newly navigated item fully into view
-// NB: We modify rect_rel by the amount we scrolled for, so it is immediately updated.
-static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item_rect)
-{
-    ImRect window_rect(window->InnerMainRect.Min - ImVec2(1, 1), window->InnerMainRect.Max + ImVec2(1, 1));
-    //g.OverlayDrawList.AddRect(window_rect.Min, window_rect.Max, IM_COL32_WHITE); // [DEBUG]
-    if (window_rect.Contains(item_rect))
-        return;
-
-    ImGuiContext& g = *GImGui;
-    if (window->ScrollbarX && item_rect.Min.x < window_rect.Min.x)
-    {
-        window->ScrollTarget.x = item_rect.Min.x - window->Pos.x + window->Scroll.x - g.Style.ItemSpacing.x;
-        window->ScrollTargetCenterRatio.x = 0.0f;
-    }
-    else if (window->ScrollbarX && item_rect.Max.x >= window_rect.Max.x)
-    {
-        window->ScrollTarget.x = item_rect.Max.x - window->Pos.x + window->Scroll.x + g.Style.ItemSpacing.x;
-        window->ScrollTargetCenterRatio.x = 1.0f;
-    }
-    if (item_rect.Min.y < window_rect.Min.y)
-    {
-        window->ScrollTarget.y = item_rect.Min.y - window->Pos.y + window->Scroll.y - g.Style.ItemSpacing.y;
-        window->ScrollTargetCenterRatio.y = 0.0f;
-    }
-    else if (item_rect.Max.y >= window_rect.Max.y)
-    {
-        window->ScrollTarget.y = item_rect.Max.y - window->Pos.y + window->Scroll.y + g.Style.ItemSpacing.y;
-        window->ScrollTargetCenterRatio.y = 1.0f;
-    }
-}
-
-static void ImGui::NavUpdate()
-{
-    ImGuiContext& g = *GImGui;
-    g.IO.WantSetMousePos = false;
-
-#if 0
-    if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
-#endif
-
-    bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
-    bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
-
-    // Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
-    if (nav_gamepad_active)
-        if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
-            g.NavInputSource = ImGuiInputSource_NavGamepad;
-
-    // Update Keyboard->Nav inputs mapping
-    if (nav_keyboard_active)
-    {
-        #define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
-        NAV_MAP_KEY(ImGuiKey_Space,     ImGuiNavInput_Activate );
-        NAV_MAP_KEY(ImGuiKey_Enter,     ImGuiNavInput_Input    );
-        NAV_MAP_KEY(ImGuiKey_Escape,    ImGuiNavInput_Cancel   );
-        NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
-        NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
-        NAV_MAP_KEY(ImGuiKey_UpArrow,   ImGuiNavInput_KeyUp_   );
-        NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
-        if (g.IO.KeyCtrl)   g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
-        if (g.IO.KeyShift)  g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
-        if (g.IO.KeyAlt)    g.IO.NavInputs[ImGuiNavInput_KeyMenu_]  = 1.0f;
-        #undef NAV_MAP_KEY
-    }
-
-    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
-    for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
-        g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
-
-    // Process navigation init request (select first/default focus)
-    if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
-    {
-        // Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
-        IM_ASSERT(g.NavWindow);
-        if (g.NavInitRequestFromMove)
-            SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
-        else
-            SetNavID(g.NavInitResultId, g.NavLayer);
-        g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
-    }
-    g.NavInitRequest = false;
-    g.NavInitRequestFromMove = false;
-    g.NavInitResultId = 0;
-    g.NavJustMovedToId = 0;
-
-    // Process navigation move request
-    if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
-    {
-        // Select which result to use
-        ImGuiNavMoveResult* result = (g.NavMoveResultLocal.ID != 0) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
-
-        // PageUp/PageDown behavior first jumps to the bottom/top mostly visible item, _otherwise_ use the result from the previous/next page.
-        if (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet)
-            if (g.NavMoveResultLocalVisibleSet.ID != 0 && g.NavMoveResultLocalVisibleSet.ID != g.NavId)
-                result = &g.NavMoveResultLocalVisibleSet;
-
-        // Maybe entering a flattened child from the outside? In this case solve the tie using the regular scoring rules.
-        if (result != &g.NavMoveResultOther && g.NavMoveResultOther.ID != 0 && g.NavMoveResultOther.Window->ParentWindow == g.NavWindow)
-            if ((g.NavMoveResultOther.DistBox < result->DistBox) || (g.NavMoveResultOther.DistBox == result->DistBox && g.NavMoveResultOther.DistCenter < result->DistCenter))
-                result = &g.NavMoveResultOther;
-        IM_ASSERT(g.NavWindow && result->Window);
-
-        // Scroll to keep newly navigated item fully into view.
-        if (g.NavLayer == 0)
-        {
-            ImRect rect_abs = ImRect(result->RectRel.Min + result->Window->Pos, result->RectRel.Max + result->Window->Pos);
-            NavScrollToBringItemIntoView(result->Window, rect_abs);
-
-            // Estimate upcoming scroll so we can offset our result position so mouse position can be applied immediately after in NavUpdate()
-            ImVec2 next_scroll = CalcNextScrollFromScrollTargetAndClamp(result->Window, false);
-            ImVec2 delta_scroll = result->Window->Scroll - next_scroll;
-            result->RectRel.Translate(delta_scroll);
-
-            // Also scroll parent window to keep us into view if necessary (we could/should technically recurse back the whole the parent hierarchy).
-            if (result->Window->Flags & ImGuiWindowFlags_ChildWindow)
-                NavScrollToBringItemIntoView(result->Window->ParentWindow, ImRect(rect_abs.Min + delta_scroll, rect_abs.Max + delta_scroll));
-        }
-
-        // Apply result from previous frame navigation directional move request
-        ClearActiveID();
-        g.NavWindow = result->Window;
-        SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
-        g.NavJustMovedToId = result->ID;
-        g.NavMoveFromClampedRefRect = false;
-    }
-
-    // When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
-    if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
-    {
-        IM_ASSERT(g.NavMoveRequest);
-        if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
-            g.NavDisableHighlight = false;
-        g.NavMoveRequestForward = ImGuiNavForward_None;
-    }
-
-    // Apply application mouse position movement, after we had a chance to process move request result.
-    if (g.NavMousePosDirty && g.NavIdIsAlive)
-    {
-        // Set mouse position given our knowledge of the navigated item position from last frame
-        if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
-        {
-            if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
-            {
-                g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
-                g.IO.WantSetMousePos = true;
-            }
-        }
-        g.NavMousePosDirty = false;
-    }
-    g.NavIdIsAlive = false;
-    g.NavJustTabbedId = 0;
-    IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
-
-    // Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
-    if (g.NavWindow)
-        NavSaveLastChildNavWindow(g.NavWindow);
-    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
-        g.NavWindow->NavLastChildNavWindow = NULL;
-
-    NavUpdateWindowing();
-
-    // Set output flags for user application
-    g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
-    g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
-
-    // Process NavCancel input (to close a popup, get back to parent, clear focus)
-    if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
-    {
-        if (g.ActiveId != 0)
-        {
-            ClearActiveID();
-        }
-        else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
-        {
-            // Exit child window
-            ImGuiWindow* child_window = g.NavWindow;
-            ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
-            IM_ASSERT(child_window->ChildId != 0);
-            FocusWindow(parent_window);
-            SetNavID(child_window->ChildId, 0);
-            g.NavIdIsAlive = false;
-            if (g.NavDisableMouseHover)
-                g.NavMousePosDirty = true;
-        }
-        else if (g.OpenPopupStack.Size > 0)
-        {
-            // Close open popup/menu
-            if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
-                ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-        }
-        else if (g.NavLayer != 0)
-        {
-            // Leave the "menu" layer
-            NavRestoreLayer(0);
-        }
-        else
-        {
-            // Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
-            if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
-                g.NavWindow->NavLastIds[0] = 0;
-            g.NavId = 0;
-        }
-    }
-
-    // Process manual activation request
-    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
-    if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-    {
-        bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
-        bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
-        if (g.ActiveId == 0 && activate_pressed)
-            g.NavActivateId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
-            g.NavActivateDownId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
-            g.NavActivatePressedId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
-            g.NavInputId = g.NavId;
-    }
-    if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-        g.NavDisableHighlight = true;
-    if (g.NavActivateId != 0)
-        IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
-    g.NavMoveRequest = false;
-
-    // Process programmatic activation request
-    if (g.NavNextActivateId != 0)
-        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
-    g.NavNextActivateId = 0;
-
-    // Initiate directional inputs request
-    const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
-    if (g.NavMoveRequestForward == ImGuiNavForward_None)
-    {
-        g.NavMoveDir = ImGuiDir_None;
-        g.NavMoveRequestFlags = 0;
-        if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-        {
-            if ((allowed_dir_flags & (1<<ImGuiDir_Left))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Up))    && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp,   ImGuiNavInput_KeyUp_,   ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Down))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
-        }
-        g.NavMoveClipDir = g.NavMoveDir;
-    }
-    else
-    {
-        // Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
-        // (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
-        IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
-        IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
-        g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
-    }
-
-    // PageUp/PageDown scroll
-    float nav_scoring_rect_offset_y = 0.0f;
-    if (nav_keyboard_active && g.NavMoveDir == ImGuiDir_None && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget && g.NavLayer == 0)
-    {
-        ImGuiWindow* window = g.NavWindow;
-        bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && (allowed_dir_flags & (1 << ImGuiDir_Up));
-        bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && (allowed_dir_flags & (1 << ImGuiDir_Down));
-        if ((page_up_held && !page_down_held) || (page_down_held && !page_up_held))
-        {
-            if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
-            {
-                // Fallback manual-scroll when window has no navigable item
-                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
-                    SetWindowScrollY(window, window->Scroll.y - window->InnerClipRect.GetHeight());
-                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
-                    SetWindowScrollY(window, window->Scroll.y + window->InnerClipRect.GetHeight());
-            }
-            else
-            {
-                const ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
-                const float page_offset_y = ImMax(0.0f, window->InnerClipRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
-                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
-                {
-                    nav_scoring_rect_offset_y = -page_offset_y;
-                    g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
-                    g.NavMoveClipDir = ImGuiDir_Up;
-                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
-                }
-                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
-                {
-                    nav_scoring_rect_offset_y = +page_offset_y;
-                    g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
-                    g.NavMoveClipDir = ImGuiDir_Down;
-                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
-                }
-            }
-        }
-    }
-
-    if (g.NavMoveDir != ImGuiDir_None)
-    {
-        g.NavMoveRequest = true;
-        g.NavMoveDirLast = g.NavMoveDir;
-    }
-
-    // If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
-    if (g.NavMoveRequest && g.NavId == 0)
-    {
-        g.NavInitRequest = g.NavInitRequestFromMove = true;
-        g.NavInitResultId = 0;
-        g.NavDisableHighlight = false;
-    }
-
-    NavUpdateAnyRequestFlag();
-
-    // Scrolling
-    if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
-    {
-        // *Fallback* manual-scroll with Nav directional keys when window has no navigable item
-        ImGuiWindow* window = g.NavWindow;
-        const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
-        if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
-        {
-            if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
-                SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
-            if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
-                SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
-        }
-
-        // *Normal* Manual scroll with NavScrollXXX keys
-        // Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
-        ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
-        if (scroll_dir.x != 0.0f && window->ScrollbarX)
-        {
-            SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
-            g.NavMoveFromClampedRefRect = true;
-        }
-        if (scroll_dir.y != 0.0f)
-        {
-            SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
-            g.NavMoveFromClampedRefRect = true;
-        }
-    }
-
-    // Reset search results
-    g.NavMoveResultLocal.Clear();
-    g.NavMoveResultLocalVisibleSet.Clear();
-    g.NavMoveResultOther.Clear();
-
-    // When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
-    if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
-    {
-        ImGuiWindow* window = g.NavWindow;
-        ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
-        if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
-        {
-            float pad = window->CalcFontSize() * 0.5f;
-            window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
-            window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
-            g.NavId = 0;
-        }
-        g.NavMoveFromClampedRefRect = false;
-    }
-
-    // For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
-    ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
-    g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
-    g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
-    g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
-    g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
-    IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
-    //g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
-    g.NavScoringCount = 0;
-#if IMGUI_DEBUG_NAV_RECTS
-    if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
-    if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
-#endif
-}
-
 void ImGui::StartMouseMovingWindow(ImGuiWindow* window)
 {
     // Set ActiveId even if the _NoMove flag is set. Without it, dragging away from a window with _NoMove would activate hover on other windows.
@@ -4010,65 +3013,6 @@
     Begin("Debug##Default");
 }
 
-static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
-{
-    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHash(name, 0));
-    if (!settings)
-        settings = CreateNewWindowSettings(name);
-    return (void*)settings;
-}
-
-static void SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
-{
-    ImGuiWindowSettings* settings = (ImGuiWindowSettings*)entry;
-    float x, y;
-    int i;
-    if (sscanf(line, "Pos=%f,%f", &x, &y) == 2)         settings->Pos = ImVec2(x, y);
-    else if (sscanf(line, "Size=%f,%f", &x, &y) == 2)   settings->Size = ImMax(ImVec2(x, y), GImGui->Style.WindowMinSize);
-    else if (sscanf(line, "Collapsed=%d", &i) == 1)     settings->Collapsed = (i != 0);
-}
-
-static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
-{
-    // Gather data from windows that were active during this session
-    ImGuiContext& g = *imgui_ctx;
-    for (int i = 0; i != g.Windows.Size; i++)
-    {
-        ImGuiWindow* window = g.Windows[i];
-        if (window->Flags & ImGuiWindowFlags_NoSavedSettings)
-            continue;
-
-        ImGuiWindowSettings* settings = (window->SettingsIdx != -1) ? &g.SettingsWindows[window->SettingsIdx] : ImGui::FindWindowSettings(window->ID);
-        if (!settings)
-        {
-            settings = CreateNewWindowSettings(window->Name);
-            window->SettingsIdx = g.SettingsWindows.index_from_pointer(settings);
-        }
-        IM_ASSERT(settings->ID == window->ID);
-        settings->Pos = window->Pos;
-        settings->Size = window->SizeFull;
-        settings->Collapsed = window->Collapsed;
-    }
-
-    // Write a buffer
-    // If a window wasn't opened in this session we preserve its settings
-    buf->reserve(buf->size() + g.SettingsWindows.Size * 96); // ballpark reserve
-    for (int i = 0; i != g.SettingsWindows.Size; i++)
-    {
-        const ImGuiWindowSettings* settings = &g.SettingsWindows[i];
-        if (settings->Pos.x == FLT_MAX)
-            continue;
-        const char* name = settings->Name;
-        if (const char* p = strstr(name, "###"))  // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID()
-            name = p;
-        buf->appendf("[%s][%s]\n", handler->TypeName, name);
-        buf->appendf("Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
-        buf->appendf("Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
-        buf->appendf("Collapsed=%d\n", settings->Collapsed);
-        buf->appendf("\n");
-    }
-}
-
 void ImGui::Initialize(ImGuiContext* context)
 {
     ImGuiContext& g = *context;
@@ -4143,154 +3087,6 @@
     g.Initialized = false;
 }
 
-ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = 0; i != g.SettingsWindows.Size; i++)
-        if (g.SettingsWindows[i].ID == id)
-            return &g.SettingsWindows[i];
-    return NULL;
-}
-
-static ImGuiWindowSettings* CreateNewWindowSettings(const char* name)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsWindows.push_back(ImGuiWindowSettings());
-    ImGuiWindowSettings* settings = &g.SettingsWindows.back();
-    settings->Name = ImStrdup(name);
-    settings->ID = ImHash(name, 0);
-    return settings;
-}
-
-void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
-{
-    size_t file_data_size = 0;
-    char* file_data = (char*)ImFileLoadToMemory(ini_filename, "rb", &file_data_size);
-    if (!file_data)
-        return;
-    LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
-    ImGui::MemFree(file_data);
-}
-
-ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
-{
-    ImGuiContext& g = *GImGui;
-    const ImGuiID type_hash = ImHash(type_name, 0, 0);
-    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
-        if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
-            return &g.SettingsHandlers[handler_n];
-    return NULL;
-}
-
-// Zero-tolerance, no error reporting, cheap .ini parsing
-void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.Initialized);
-    IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
-
-    // For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
-    // For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
-    if (ini_size == 0)
-        ini_size = strlen(ini_data);
-    char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
-    char* buf_end = buf + ini_size;
-    memcpy(buf, ini_data, ini_size);
-    buf[ini_size] = 0;
-
-    void* entry_data = NULL;
-    ImGuiSettingsHandler* entry_handler = NULL;
-
-    char* line_end = NULL;
-    for (char* line = buf; line < buf_end; line = line_end + 1)
-    {
-        // Skip new lines markers, then find end of the line
-        while (*line == '\n' || *line == '\r')
-            line++;
-        line_end = line;
-        while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
-            line_end++;
-        line_end[0] = 0;
-
-        if (line[0] == '[' && line_end > line && line_end[-1] == ']')
-        {
-            // Parse "[Type][Name]". Note that 'Name' can itself contains [] characters, which is acceptable with the current format and parsing code.
-            line_end[-1] = 0;
-            const char* name_end = line_end - 1;
-            const char* type_start = line + 1;
-            char* type_end = (char*)(intptr_t)ImStrchrRange(type_start, name_end, ']');
-            const char* name_start = type_end ? ImStrchrRange(type_end + 1, name_end, '[') : NULL;
-            if (!type_end || !name_start)
-            {
-                name_start = type_start; // Import legacy entries that have no type
-                type_start = "Window";
-            }
-            else
-            {
-                *type_end = 0; // Overwrite first ']'
-                name_start++;  // Skip second '['
-            }
-            entry_handler = FindSettingsHandler(type_start);
-            entry_data = entry_handler ? entry_handler->ReadOpenFn(&g, entry_handler, name_start) : NULL;
-        }
-        else if (entry_handler != NULL && entry_data != NULL)
-        {
-            // Let type handler parse the line
-            entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
-        }
-    }
-    ImGui::MemFree(buf);
-    g.SettingsLoaded = true;
-}
-
-void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsDirtyTimer = 0.0f;
-    if (!ini_filename)
-        return;
-
-    size_t ini_data_size = 0;
-    const char* ini_data = SaveIniSettingsToMemory(&ini_data_size);
-    FILE* f = ImFileOpen(ini_filename, "wt");
-    if (!f)
-        return;
-    fwrite(ini_data, sizeof(char), ini_data_size, f);
-    fclose(f);
-}
-
-// Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer
-const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsDirtyTimer = 0.0f;
-    g.SettingsIniData.Buf.resize(0);
-    g.SettingsIniData.Buf.push_back(0);
-    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
-    {
-        ImGuiSettingsHandler* handler = &g.SettingsHandlers[handler_n];
-        handler->WriteAllFn(&g, handler, &g.SettingsIniData);
-    }
-    if (out_size)
-        *out_size = (size_t)g.SettingsIniData.size();
-    return g.SettingsIniData.c_str();
-}
-
-void ImGui::MarkIniSettingsDirty()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.SettingsDirtyTimer <= 0.0f)
-        g.SettingsDirtyTimer = g.IO.IniSavingRate;
-}
-
-void ImGui::MarkIniSettingsDirty(ImGuiWindow* window)
-{
-    ImGuiContext& g = *GImGui;
-    if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings))
-        if (g.SettingsDirtyTimer <= 0.0f)
-            g.SettingsDirtyTimer = g.IO.IniSavingRate;
-}
-
 // FIXME: Add a more explicit sort order in the window structure.
 static int IMGUI_CDECL ChildWindowComparer(const void* lhs, const void* rhs)
 {
@@ -4588,74 +3384,6 @@
     return text_display_end;
 }
 
-// Pass text data straight to log (without being displayed)
-void ImGui::LogText(const char* fmt, ...)
-{
-    ImGuiContext& g = *GImGui;
-    if (!g.LogEnabled)
-        return;
-
-    va_list args;
-    va_start(args, fmt);
-    if (g.LogFile)
-        vfprintf(g.LogFile, fmt, args);
-    else
-        g.LogClipboard.appendfv(fmt, args);
-    va_end(args);
-}
-
-// Internal version that takes a position to decide on newline placement and pad items according to their depth.
-// We split text into individual lines to add current tree level padding
-void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    if (!text_end)
-        text_end = ImGui::FindRenderedTextEnd(text, text_end);
-
-    const bool log_new_line = ref_pos && (ref_pos->y > window->DC.LogLinePosY + 1);
-    if (ref_pos)
-        window->DC.LogLinePosY = ref_pos->y;
-
-    const char* text_remaining = text;
-    if (g.LogStartDepth > window->DC.TreeDepth)  // Re-adjust padding if we have popped out of our starting depth
-        g.LogStartDepth = window->DC.TreeDepth;
-    const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth);
-    for (;;)
-    {
-        // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry.
-        const char* line_end = text_remaining;
-        while (line_end < text_end)
-            if (*line_end == '\n')
-                break;
-            else
-                line_end++;
-        if (line_end >= text_end)
-            line_end = NULL;
-
-        const bool is_first_line = (text == text_remaining);
-        bool is_last_line = false;
-        if (line_end == NULL)
-        {
-            is_last_line = true;
-            line_end = text_end;
-        }
-        if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
-        {
-            const int char_count = (int)(line_end - text_remaining);
-            if (log_new_line || !is_first_line)
-                ImGui::LogText(IM_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining);
-            else
-                ImGui::LogText(" %.*s", char_count, text_remaining);
-        }
-
-        if (is_last_line)
-            break;
-        text_remaining = line_end + 1;
-    }
-}
-
 // Internal ImGui functions to render text
 // RenderText***() functions calls ImDrawList::AddText() calls ImBitmapFont::RenderText()
 void ImGui::RenderText(ImVec2 pos, const char* text, const char* text_end, bool hide_text_after_hash)
@@ -5257,376 +3985,6 @@
     return ImRect(0.0f, 0.0f, g.IO.DisplaySize.x, g.IO.DisplaySize.y);
 }
 
-// Not exposed publicly as BeginTooltip() because bool parameters are evil. Let's see if other needs arise first.
-void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, bool override_previous_tooltip)
-{
-    ImGuiContext& g = *GImGui;
-    char window_name[16];
-    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
-    if (override_previous_tooltip)
-        if (ImGuiWindow* window = FindWindowByName(window_name))
-            if (window->Active)
-            {
-                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
-                window->Hidden = true;
-                window->HiddenFramesRegular = 1;
-                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
-            }
-    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoInputs|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoNav;
-    Begin(window_name, NULL, flags | extra_flags);
-}
-
-void ImGui::SetTooltipV(const char* fmt, va_list args)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.DragDropWithinSourceOrTarget)
-        BeginTooltip();
-    else
-        BeginTooltipEx(0, true);
-    TextV(fmt, args);
-    EndTooltip();
-}
-
-void ImGui::SetTooltip(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    SetTooltipV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::BeginTooltip()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.DragDropWithinSourceOrTarget)
-    {
-        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
-        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
-        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
-        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
-        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
-        SetNextWindowPos(tooltip_pos);
-        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
-        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
-        BeginTooltipEx(0, true);
-    }
-    else
-    {
-        BeginTooltipEx(0, false);
-    }
-}
-
-void ImGui::EndTooltip()
-{
-    IM_ASSERT(GetCurrentWindowRead()->Flags & ImGuiWindowFlags_Tooltip);   // Mismatched BeginTooltip()/EndTooltip() calls
-    End();
-}
-
-// Mark popup as open (toggle toward open state).
-// Popups are closed when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
-// Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
-// One open popup per level of the popup hierarchy (NB: when assigning we reset the Window member of ImGuiPopupRef to NULL)
-void ImGui::OpenPopupEx(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* parent_window = g.CurrentWindow;
-    int current_stack_size = g.CurrentPopupStack.Size;
-    ImGuiPopupRef popup_ref; // Tagged as new ref as Window will be set back to NULL if we write this into OpenPopupStack.
-    popup_ref.PopupId = id;
-    popup_ref.Window = NULL;
-    popup_ref.ParentWindow = parent_window;
-    popup_ref.OpenFrameCount = g.FrameCount;
-    popup_ref.OpenParentId = parent_window->IDStack.back();
-    popup_ref.OpenMousePos = g.IO.MousePos;
-    popup_ref.OpenPopupPos = NavCalcPreferredRefPos();
-
-    //printf("[%05d] OpenPopupEx(0x%08X)\n", g.FrameCount, id);
-    if (g.OpenPopupStack.Size < current_stack_size + 1)
-    {
-        g.OpenPopupStack.push_back(popup_ref);
-    }
-    else
-    {
-        // Gently handle the user mistakenly calling OpenPopup() every frame. It is a programming mistake! However, if we were to run the regular code path, the ui
-        // would become completely unusable because the popup will always be in hidden-while-calculating-size state _while_ claiming focus. Which would be a very confusing
-        // situation for the programmer. Instead, we silently allow the popup to proceed, it will keep reappearing and the programming error will be more obvious to understand.
-        if (g.OpenPopupStack[current_stack_size].PopupId == id && g.OpenPopupStack[current_stack_size].OpenFrameCount == g.FrameCount - 1)
-        {
-            g.OpenPopupStack[current_stack_size].OpenFrameCount = popup_ref.OpenFrameCount;
-        }
-        else
-        {
-            // Close child popups if any, then flag popup for open/reopen
-            g.OpenPopupStack.resize(current_stack_size + 1);
-            g.OpenPopupStack[current_stack_size] = popup_ref;
-        }
-
-        // When reopening a popup we first refocus its parent, otherwise if its parent is itself a popup it would get closed by ClosePopupsOverWindow().
-        // This is equivalent to what ClosePopupToLevel() does.
-        //if (g.OpenPopupStack[current_stack_size].PopupId == id)
-        //    FocusWindow(parent_window);
-    }
-}
-
-void ImGui::OpenPopup(const char* str_id)
-{
-    ImGuiContext& g = *GImGui;
-    OpenPopupEx(g.CurrentWindow->GetID(str_id));
-}
-
-void ImGui::ClosePopupsOverWindow(ImGuiWindow* ref_window)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.OpenPopupStack.empty())
-        return;
-
-    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
-    // Don't close our own child popup windows.
-    int n = 0;
-    if (ref_window)
-    {
-        for (n = 0; n < g.OpenPopupStack.Size; n++)
-        {
-            ImGuiPopupRef& popup = g.OpenPopupStack[n];
-            if (!popup.Window)
-                continue;
-            IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
-            if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
-                continue;
-
-            // Trim the stack if popups are not direct descendant of the reference window (which is often the NavWindow)
-            bool has_focus = false;
-            for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
-                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
-            if (!has_focus)
-                break;
-        }
-    }
-    if (n < g.OpenPopupStack.Size) // This test is not required but it allows to set a convenient breakpoint on the block below
-        ClosePopupToLevel(n);
-}
-
-ImGuiWindow* ImGui::GetFrontMostPopupModal()
-{
-    ImGuiContext& g = *GImGui;
-    for (int n = g.OpenPopupStack.Size-1; n >= 0; n--)
-        if (ImGuiWindow* popup = g.OpenPopupStack.Data[n].Window)
-            if (popup->Flags & ImGuiWindowFlags_Modal)
-                return popup;
-    return NULL;
-}
-
-void ImGui::ClosePopupToLevel(int remaining)
-{
-    IM_ASSERT(remaining >= 0);
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* focus_window = (remaining > 0) ? g.OpenPopupStack[remaining-1].Window : g.OpenPopupStack[0].ParentWindow;
-    if (g.NavLayer == 0)
-        focus_window = NavRestoreLastChildNavWindow(focus_window);
-    FocusWindow(focus_window);
-    focus_window->DC.NavHideHighlightOneFrame = true;
-    g.OpenPopupStack.resize(remaining);
-}
-
-void ImGui::ClosePopup(ImGuiID id)
-{
-    if (!IsPopupOpen(id))
-        return;
-    ImGuiContext& g = *GImGui;
-    ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-}
-
-// Close the popup we have begin-ed into.
-void ImGui::CloseCurrentPopup()
-{
-    ImGuiContext& g = *GImGui;
-    int popup_idx = g.CurrentPopupStack.Size - 1;
-    if (popup_idx < 0 || popup_idx >= g.OpenPopupStack.Size || g.CurrentPopupStack[popup_idx].PopupId != g.OpenPopupStack[popup_idx].PopupId)
-        return;
-    while (popup_idx > 0 && g.OpenPopupStack[popup_idx].Window && (g.OpenPopupStack[popup_idx].Window->Flags & ImGuiWindowFlags_ChildMenu))
-        popup_idx--;
-    ClosePopupToLevel(popup_idx);
-}
-
-bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (!IsPopupOpen(id))
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-
-    char name[20];
-    if (extra_flags & ImGuiWindowFlags_ChildMenu)
-        ImFormatString(name, IM_ARRAYSIZE(name), "##Menu_%02d", g.CurrentPopupStack.Size);    // Recycle windows based on depth
-    else
-        ImFormatString(name, IM_ARRAYSIZE(name), "##Popup_%08x", id); // Not recycling, so we can close/open during the same frame
-
-    bool is_open = Begin(name, NULL, extra_flags | ImGuiWindowFlags_Popup);
-    if (!is_open) // NB: Begin can return false when the popup is completely clipped (e.g. zero size display)
-        EndPopup();
-
-    return is_open;
-}
-
-bool ImGui::BeginPopup(const char* str_id, ImGuiWindowFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.OpenPopupStack.Size <= g.CurrentPopupStack.Size) // Early out for performance
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-    return BeginPopupEx(g.CurrentWindow->GetID(str_id), flags|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::IsPopupOpen(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == id;
-}
-
-bool ImGui::IsPopupOpen(const char* str_id)
-{
-    ImGuiContext& g = *GImGui;
-    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == g.CurrentWindow->GetID(str_id);
-}
-
-bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    const ImGuiID id = window->GetID(name);
-    if (!IsPopupOpen(id))
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-
-    // Center modal windows by default
-    // FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
-    if (g.NextWindowData.PosCond == 0)
-        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
-
-    bool is_open = Begin(name, p_open, flags | ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
-    if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-    {
-        EndPopup();
-        if (is_open)
-            ClosePopup(id);
-        return false;
-    }
-
-    return is_open;
-}
-
-void ImGui::NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, const ImRect& bb_rel, ImGuiNavMoveFlags move_flags)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_None);
-    ImGui::NavMoveRequestCancel();
-    g.NavMoveDir = move_dir;
-    g.NavMoveClipDir = clip_dir;
-    g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
-    g.NavMoveRequestFlags = move_flags;
-    g.NavWindow->NavRectRel[g.NavLayer] = bb_rel;
-}
-
-void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.NavWindow != window || !NavMoveRequestButNoResultYet() || g.NavMoveRequestForward != ImGuiNavForward_None || g.NavLayer != 0)
-        return;
-    IM_ASSERT(move_flags != 0); // No points calling this with no wrapping
-    ImRect bb_rel = window->NavRectRel[0];
-
-    ImGuiDir clip_dir = g.NavMoveDir;
-    if (g.NavMoveDir == ImGuiDir_Left && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
-    {
-        bb_rel.Min.x = bb_rel.Max.x = ImMax(window->SizeFull.x, window->SizeContents.x) - window->Scroll.x;
-        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(-bb_rel.GetHeight()); clip_dir = ImGuiDir_Up; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Right && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
-    {
-        bb_rel.Min.x = bb_rel.Max.x = -window->Scroll.x;
-        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(+bb_rel.GetHeight()); clip_dir = ImGuiDir_Down; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Up && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
-    {
-        bb_rel.Min.y = bb_rel.Max.y = ImMax(window->SizeFull.y, window->SizeContents.y) - window->Scroll.y;
-        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(-bb_rel.GetWidth()); clip_dir = ImGuiDir_Left; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Down && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
-    {
-        bb_rel.Min.y = bb_rel.Max.y = -window->Scroll.y;
-        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(+bb_rel.GetWidth()); clip_dir = ImGuiDir_Right; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-}
-
-void ImGui::EndPopup()
-{
-    ImGuiContext& g = *GImGui; (void)g;
-    IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup);  // Mismatched BeginPopup()/EndPopup() calls
-    IM_ASSERT(g.CurrentPopupStack.Size > 0);
-
-    // Make all menus and popups wrap around for now, may need to expose that policy.
-    NavMoveRequestTryWrapping(g.CurrentWindow, ImGuiNavMoveFlags_LoopY);
-
-    End();
-}
-
-bool ImGui::OpenPopupOnItemClick(const char* str_id, int mouse_button)
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-    {
-        ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
-        IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
-        OpenPopupEx(id);
-        return true;
-    }
-    return false;
-}
-
-// This is a helper to handle the simplest case of associating one named popup to one given widget.
-// You may want to handle this on user side if you have specific needs (e.g. tweaking IsItemHovered() parameters).
-// You can pass a NULL str_id to use the identifier of the last item.
-bool ImGui::BeginPopupContextItem(const char* str_id, int mouse_button)
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
-    IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
-    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-        OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::BeginPopupContextWindow(const char* str_id, int mouse_button, bool also_over_items)
-{
-    if (!str_id)
-        str_id = "window_context";
-    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
-    if (IsMouseReleased(mouse_button) && IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-        if (also_over_items || !IsAnyItemHovered())
-            OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::BeginPopupContextVoid(const char* str_id, int mouse_button)
-{
-    if (!str_id)
-        str_id = "void_context";
-    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
-    if (IsMouseReleased(mouse_button) && !IsWindowHovered(ImGuiHoveredFlags_AnyWindow))
-        OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
 static bool ImGui::BeginChildEx(const char* name, ImGuiID id, const ImVec2& size_arg, bool border, ImGuiWindowFlags flags)
 {
     ImGuiContext& g = *GImGui;
@@ -5670,7 +4028,6 @@
         SetActiveID(id+1, child_window); // Steal ActiveId with a dummy id so that key-press won't activate child item
         g.ActiveIdSource = ImGuiInputSource_Nav;
     }
-
     return ret;
 }
 
@@ -5761,112 +4118,6 @@
     IM_ASSERT(p_backup == window->DC.StackSizesBackup + IM_ARRAYSIZE(window->DC.StackSizesBackup));
 }
 
-ImRect ImGui::GetWindowAllowedExtentRect(ImGuiWindow*)
-{
-    ImVec2 padding = GImGui->Style.DisplaySafeAreaPadding;
-    ImRect r_screen = GetViewportRect();
-    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
-    return r_screen;
-}
-
-// r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
-// r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
-ImVec2 ImGui::FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy)
-{
-    ImVec2 base_pos_clamped = ImClamp(ref_pos, r_outer.Min, r_outer.Max - size);
-    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
-    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
-
-    // Combo Box policy (we want a connecting edge)
-    if (policy == ImGuiPopupPositionPolicy_ComboBox)
-    {
-        const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Down, ImGuiDir_Right, ImGuiDir_Left, ImGuiDir_Up };
-        for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
-        {
-            const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
-            if (n != -1 && dir == *last_dir) // Already tried this direction?
-                continue;
-            ImVec2 pos;
-            if (dir == ImGuiDir_Down)  pos = ImVec2(r_avoid.Min.x, r_avoid.Max.y);          // Below, Toward Right (default)
-            if (dir == ImGuiDir_Right) pos = ImVec2(r_avoid.Min.x, r_avoid.Min.y - size.y); // Above, Toward Right
-            if (dir == ImGuiDir_Left)  pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Max.y); // Below, Toward Left
-            if (dir == ImGuiDir_Up)    pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Min.y - size.y); // Above, Toward Left
-            if (!r_outer.Contains(ImRect(pos, pos + size)))
-                continue;
-            *last_dir = dir;
-            return pos;
-        }
-    }
-
-    // Default popup policy
-    const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
-    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
-    {
-        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
-        if (n != -1 && dir == *last_dir) // Already tried this direction?
-            continue;
-        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
-        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
-        if (avail_w < size.x || avail_h < size.y)
-            continue;
-        ImVec2 pos;
-        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
-        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
-        *last_dir = dir;
-        return pos;
-    }
-
-    // Fallback, try to keep within display
-    *last_dir = ImGuiDir_None;
-    ImVec2 pos = ref_pos;
-    pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
-    pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
-    return pos;
-}
-
-ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
-{
-    ImGuiContext& g = *GImGui;
-
-    ImRect r_outer = GetWindowAllowedExtentRect(window);
-    if (window->Flags & ImGuiWindowFlags_ChildMenu)
-    {
-        // Child menus typically request _any_ position within the parent menu item, and then our FindBestWindowPosForPopup() function will move the new menu outside the parent bounds.
-        // This is how we end up with child menus appearing (most-commonly) on the right of the parent menu.
-        IM_ASSERT(g.CurrentWindow == window);
-        ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.Size - 2];
-        float horizontal_overlap = g.Style.ItemSpacing.x;       // We want some overlap to convey the relative depth of each menu (currently the amount of overlap is hard-coded to style.ItemSpacing.x).
-        ImRect r_avoid;
-        if (parent_window->DC.MenuBarAppending)
-            r_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
-        else
-            r_avoid = ImRect(parent_window->Pos.x + horizontal_overlap, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - horizontal_overlap - parent_window->ScrollbarSizes.x, FLT_MAX);
-        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-    }
-    if (window->Flags & ImGuiWindowFlags_Popup)
-    {
-        ImRect r_avoid = ImRect(window->Pos.x - 1, window->Pos.y - 1, window->Pos.x + 1, window->Pos.y + 1);
-        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-    }
-    if (window->Flags & ImGuiWindowFlags_Tooltip)
-    {
-        // Position tooltip (always follows mouse)
-        float sc = g.Style.MouseCursorScale;
-        ImVec2 ref_pos = NavCalcPreferredRefPos();
-        ImRect r_avoid;
-        if (!g.NavDisableHighlight && g.NavDisableMouseHover && !(g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos))
-            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 16, ref_pos.y + 8);
-        else
-            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24 * sc, ref_pos.y + 24 * sc); // FIXME: Hard-coded based on mouse cursor shape expectation. Exact dimension not very important.
-        ImVec2 pos = FindBestWindowPosForPopupEx(ref_pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-        if (window->AutoPosLastDirection == ImGuiDir_None)
-            pos = ref_pos + ImVec2(2, 2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
-        return pos;
-    }
-    IM_ASSERT(0);
-    return window->Pos;
-}
-
 static void SetWindowConditionAllowFlags(ImGuiWindow* window, ImGuiCond flags, bool enabled)
 {
     window->SetWindowPosAllowFlags       = enabled ? (window->SetWindowPosAllowFlags       | flags) : (window->SetWindowPosAllowFlags       & ~flags);
@@ -6843,116 +5094,6 @@
     SetCurrentWindow(g.CurrentWindowStack.empty() ? NULL : g.CurrentWindowStack.back());
 }
 
-// Vertical scrollbar
-// The entire piece of code below is rather confusing because:
-// - We handle absolute seeking (when first clicking outside the grab) and relative manipulation (afterward or when clicking inside the grab)
-// - We store values as normalized ratio and in a form that allows the window content to change while we are holding on a scrollbar
-// - We handle both horizontal and vertical scrollbars, which makes the terminology not ideal.
-void ImGui::Scrollbar(ImGuiLayoutType direction)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    const bool horizontal = (direction == ImGuiLayoutType_Horizontal);
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(horizontal ? "#SCROLLX" : "#SCROLLY");
-
-    // Render background
-    bool other_scrollbar = (horizontal ? window->ScrollbarY : window->ScrollbarX);
-    float other_scrollbar_size_w = other_scrollbar ? style.ScrollbarSize : 0.0f;
-    const ImRect window_rect = window->Rect();
-    const float border_size = window->WindowBorderSize;
-    ImRect bb = horizontal
-        ? ImRect(window->Pos.x + border_size, window_rect.Max.y - style.ScrollbarSize, window_rect.Max.x - other_scrollbar_size_w - border_size, window_rect.Max.y - border_size)
-        : ImRect(window_rect.Max.x - style.ScrollbarSize, window->Pos.y + border_size, window_rect.Max.x - border_size, window_rect.Max.y - other_scrollbar_size_w - border_size);
-    if (!horizontal)
-        bb.Min.y += window->TitleBarHeight() + ((window->Flags & ImGuiWindowFlags_MenuBar) ? window->MenuBarHeight() : 0.0f);
-    if (bb.GetWidth() <= 0.0f || bb.GetHeight() <= 0.0f)
-        return;
-
-    int window_rounding_corners;
-    if (horizontal)
-        window_rounding_corners = ImDrawCornerFlags_BotLeft | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
-    else
-        window_rounding_corners = (((window->Flags & ImGuiWindowFlags_NoTitleBar) && !(window->Flags & ImGuiWindowFlags_MenuBar)) ? ImDrawCornerFlags_TopRight : 0) | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
-    window->DrawList->AddRectFilled(bb.Min, bb.Max, GetColorU32(ImGuiCol_ScrollbarBg), window->WindowRounding, window_rounding_corners);
-    bb.Expand(ImVec2(-ImClamp((float)(int)((bb.Max.x - bb.Min.x - 2.0f) * 0.5f), 0.0f, 3.0f), -ImClamp((float)(int)((bb.Max.y - bb.Min.y - 2.0f) * 0.5f), 0.0f, 3.0f)));
-
-    // V denote the main, longer axis of the scrollbar (= height for a vertical scrollbar)
-    float scrollbar_size_v = horizontal ? bb.GetWidth() : bb.GetHeight();
-    float scroll_v = horizontal ? window->Scroll.x : window->Scroll.y;
-    float win_size_avail_v = (horizontal ? window->SizeFull.x : window->SizeFull.y) - other_scrollbar_size_w;
-    float win_size_contents_v = horizontal ? window->SizeContents.x : window->SizeContents.y;
-
-    // Calculate the height of our grabbable box. It generally represent the amount visible (vs the total scrollable amount)
-    // But we maintain a minimum size in pixel to allow for the user to still aim inside.
-    IM_ASSERT(ImMax(win_size_contents_v, win_size_avail_v) > 0.0f); // Adding this assert to check if the ImMax(XXX,1.0f) is still needed. PLEASE CONTACT ME if this triggers.
-    const float win_size_v = ImMax(ImMax(win_size_contents_v, win_size_avail_v), 1.0f);
-    const float grab_h_pixels = ImClamp(scrollbar_size_v * (win_size_avail_v / win_size_v), style.GrabMinSize, scrollbar_size_v);
-    const float grab_h_norm = grab_h_pixels / scrollbar_size_v;
-
-    // Handle input right away. None of the code of Begin() is relying on scrolling position before calling Scrollbar().
-    bool held = false;
-    bool hovered = false;
-    const bool previously_held = (g.ActiveId == id);
-    ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_NoNavFocus);
-
-    float scroll_max = ImMax(1.0f, win_size_contents_v - win_size_avail_v);
-    float scroll_ratio = ImSaturate(scroll_v / scroll_max);
-    float grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
-    if (held && grab_h_norm < 1.0f)
-    {
-        float scrollbar_pos_v = horizontal ? bb.Min.x : bb.Min.y;
-        float mouse_pos_v = horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
-        float* click_delta_to_grab_center_v = horizontal ? &g.ScrollbarClickDeltaToGrabCenter.x : &g.ScrollbarClickDeltaToGrabCenter.y;
-
-        // Click position in scrollbar normalized space (0.0f->1.0f)
-        const float clicked_v_norm = ImSaturate((mouse_pos_v - scrollbar_pos_v) / scrollbar_size_v);
-        SetHoveredID(id);
-
-        bool seek_absolute = false;
-        if (!previously_held)
-        {
-            // On initial click calculate the distance between mouse and the center of the grab
-            if (clicked_v_norm >= grab_v_norm && clicked_v_norm <= grab_v_norm + grab_h_norm)
-            {
-                *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
-            }
-            else
-            {
-                seek_absolute = true;
-                *click_delta_to_grab_center_v = 0.0f;
-            }
-        }
-
-        // Apply scroll
-        // It is ok to modify Scroll here because we are being called in Begin() after the calculation of SizeContents and before setting up our starting position
-        const float scroll_v_norm = ImSaturate((clicked_v_norm - *click_delta_to_grab_center_v - grab_h_norm*0.5f) / (1.0f - grab_h_norm));
-        scroll_v = (float)(int)(0.5f + scroll_v_norm * scroll_max);//(win_size_contents_v - win_size_v));
-        if (horizontal)
-            window->Scroll.x = scroll_v;
-        else
-            window->Scroll.y = scroll_v;
-
-        // Update values for rendering
-        scroll_ratio = ImSaturate(scroll_v / scroll_max);
-        grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
-
-        // Update distance to grab now that we have seeked and saturated
-        if (seek_absolute)
-            *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
-    }
-
-    // Render
-    const ImU32 grab_col = GetColorU32(held ? ImGuiCol_ScrollbarGrabActive : hovered ? ImGuiCol_ScrollbarGrabHovered : ImGuiCol_ScrollbarGrab);
-    ImRect grab_rect;
-    if (horizontal)
-        grab_rect = ImRect(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm), bb.Min.y, ImMin(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm) + grab_h_pixels, window_rect.Max.x), bb.Max.y);
-    else
-        grab_rect = ImRect(bb.Min.x, ImLerp(bb.Min.y, bb.Max.y, grab_v_norm), bb.Max.x, ImMin(ImLerp(bb.Min.y, bb.Max.y, grab_v_norm) + grab_h_pixels, window_rect.Max.y));
-    window->DrawList->AddRectFilled(grab_rect.Min, grab_rect.Max, grab_col, style.ScrollbarRounding);
-}
-
 void ImGui::BringWindowToFront(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -7871,177 +6012,6 @@
     return window->DC.StateStorage;
 }
 
-void ImGui::TextV(const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const char* text_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    TextUnformatted(g.TempBuffer, text_end);
-}
-
-void ImGui::Text(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextColoredV(const ImVec4& col, const char* fmt, va_list args)
-{
-    PushStyleColor(ImGuiCol_Text, col);
-    TextV(fmt, args);
-    PopStyleColor();
-}
-
-void ImGui::TextColored(const ImVec4& col, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextColoredV(col, fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextDisabledV(const char* fmt, va_list args)
-{
-    PushStyleColor(ImGuiCol_Text, GImGui->Style.Colors[ImGuiCol_TextDisabled]);
-    TextV(fmt, args);
-    PopStyleColor();
-}
-
-void ImGui::TextDisabled(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextDisabledV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextWrappedV(const char* fmt, va_list args)
-{
-    bool need_wrap = (GImGui->CurrentWindow->DC.TextWrapPos < 0.0f);    // Keep existing wrap position is one ia already set
-    if (need_wrap) PushTextWrapPos(0.0f);
-    TextV(fmt, args);
-    if (need_wrap) PopTextWrapPos();
-}
-
-void ImGui::TextWrapped(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextWrappedV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextUnformatted(const char* text, const char* text_end)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(text != NULL);
-    const char* text_begin = text;
-    if (text_end == NULL)
-        text_end = text + strlen(text); // FIXME-OPT
-
-    const ImVec2 text_pos(window->DC.CursorPos.x, window->DC.CursorPos.y + window->DC.CurrentLineTextBaseOffset);
-    const float wrap_pos_x = window->DC.TextWrapPos;
-    const bool wrap_enabled = wrap_pos_x >= 0.0f;
-    if (text_end - text > 2000 && !wrap_enabled)
-    {
-        // Long text!
-        // Perform manual coarse clipping to optimize for long multi-line text
-        // From this point we will only compute the width of lines that are visible. Optimization only available when word-wrapping is disabled.
-        // We also don't vertically center the text within the line full height, which is unlikely to matter because we are likely the biggest and only item on the line.
-        const char* line = text;
-        const float line_height = GetTextLineHeight();
-        const ImRect clip_rect = window->ClipRect;
-        ImVec2 text_size(0,0);
-
-        if (text_pos.y <= clip_rect.Max.y)
-        {
-            ImVec2 pos = text_pos;
-
-            // Lines to skip (can't skip when logging text)
-            if (!g.LogEnabled)
-            {
-                int lines_skippable = (int)((clip_rect.Min.y - text_pos.y) / line_height);
-                if (lines_skippable > 0)
-                {
-                    int lines_skipped = 0;
-                    while (line < text_end && lines_skipped < lines_skippable)
-                    {
-                        const char* line_end = strchr(line, '\n');
-                        if (!line_end)
-                            line_end = text_end;
-                        line = line_end + 1;
-                        lines_skipped++;
-                    }
-                    pos.y += lines_skipped * line_height;
-                }
-            }
-
-            // Lines to render
-            if (line < text_end)
-            {
-                ImRect line_rect(pos, pos + ImVec2(FLT_MAX, line_height));
-                while (line < text_end)
-                {
-                    const char* line_end = strchr(line, '\n');
-                    if (IsClippedEx(line_rect, 0, false))
-                        break;
-
-                    const ImVec2 line_size = CalcTextSize(line, line_end, false);
-                    text_size.x = ImMax(text_size.x, line_size.x);
-                    RenderText(pos, line, line_end, false);
-                    if (!line_end)
-                        line_end = text_end;
-                    line = line_end + 1;
-                    line_rect.Min.y += line_height;
-                    line_rect.Max.y += line_height;
-                    pos.y += line_height;
-                }
-
-                // Count remaining lines
-                int lines_skipped = 0;
-                while (line < text_end)
-                {
-                    const char* line_end = strchr(line, '\n');
-                    if (!line_end)
-                        line_end = text_end;
-                    line = line_end + 1;
-                    lines_skipped++;
-                }
-                pos.y += lines_skipped * line_height;
-            }
-
-            text_size.y += (pos - text_pos).y;
-        }
-
-        ImRect bb(text_pos, text_pos + text_size);
-        ItemSize(bb);
-        ItemAdd(bb, 0);
-    }
-    else
-    {
-        const float wrap_width = wrap_enabled ? CalcWrapWidthForPos(window->DC.CursorPos, wrap_pos_x) : 0.0f;
-        const ImVec2 text_size = CalcTextSize(text_begin, text_end, false, wrap_width);
-
-        // Account of baseline offset
-        ImRect bb(text_pos, text_pos + text_size);
-        ItemSize(text_size);
-        if (!ItemAdd(bb, 0))
-            return;
-
-        // Render (we don't hide text after ## in this end-user function)
-        RenderTextWrapped(bb.Min, text_begin, text_end, wrap_width);
-    }
-}
-
 void ImGui::AlignTextToFramePadding()
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -8053,864 +6023,6 @@
     window->DC.CurrentLineTextBaseOffset = ImMax(window->DC.CurrentLineTextBaseOffset, g.Style.FramePadding.y);
 }
 
-// Add a label+text combo aligned to other label+value widgets
-void ImGui::LabelTextV(const char* label, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect value_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2));
-    const ImRect total_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w + (label_size.x > 0.0f ? style.ItemInnerSpacing.x : 0.0f), style.FramePadding.y*2) + label_size);
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, 0))
-        return;
-
-    // Render
-    const char* value_text_begin = &g.TempBuffer[0];
-    const char* value_text_end = value_text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    RenderTextClipped(value_bb.Min, value_bb.Max, value_text_begin, value_text_end, NULL, ImVec2(0.0f,0.5f));
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(value_bb.Max.x + style.ItemInnerSpacing.x, value_bb.Min.y + style.FramePadding.y), label);
-}
-
-void ImGui::LabelText(const char* label, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    LabelTextV(label, fmt, args);
-    va_end(args);
-}
-
-bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool* out_held, ImGuiButtonFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-
-    if (flags & ImGuiButtonFlags_Disabled)
-    {
-        if (out_hovered) *out_hovered = false;
-        if (out_held) *out_held = false;
-        if (g.ActiveId == id) ClearActiveID();
-        return false;
-    }
-
-    // Default behavior requires click+release on same spot
-    if ((flags & (ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnClick | ImGuiButtonFlags_PressedOnRelease | ImGuiButtonFlags_PressedOnDoubleClick)) == 0)
-        flags |= ImGuiButtonFlags_PressedOnClickRelease;
-
-    ImGuiWindow* backup_hovered_window = g.HoveredWindow;
-    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
-        g.HoveredWindow = window;
-
-    bool pressed = false;
-    bool hovered = ItemHoverable(bb, id);
-
-    // Drag source doesn't report as hovered
-    if (hovered && g.DragDropActive && g.DragDropPayload.SourceId == id && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoDisableHover))
-        hovered = false;
-
-    // Special mode for Drag and Drop where holding button pressed for a long time while dragging another item triggers the button
-    if (g.DragDropActive && (flags & ImGuiButtonFlags_PressedOnDragDropHold) && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoHoldToOpenOthers))
-        if (IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem))
-        {
-            hovered = true;
-            SetHoveredID(id);
-            if (CalcTypematicPressedRepeatAmount(g.HoveredIdTimer + 0.0001f, g.HoveredIdTimer + 0.0001f - g.IO.DeltaTime, 0.01f, 0.70f)) // FIXME: Our formula for CalcTypematicPressedRepeatAmount() is fishy
-            {
-                pressed = true;
-                FocusWindow(window);
-            }
-        }
-
-    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
-        g.HoveredWindow = backup_hovered_window;
-
-    // AllowOverlap mode (rarely used) requires previous frame HoveredId to be null or to match. This allows using patterns where a later submitted widget overlaps a previous one.
-    if (hovered && (flags & ImGuiButtonFlags_AllowItemOverlap) && (g.HoveredIdPreviousFrame != id && g.HoveredIdPreviousFrame != 0))
-        hovered = false;
-
-    // Mouse
-    if (hovered)
-    {
-        if (!(flags & ImGuiButtonFlags_NoKeyModifiers) || (!g.IO.KeyCtrl && !g.IO.KeyShift && !g.IO.KeyAlt))
-        {
-            //                        | CLICKING        | HOLDING with ImGuiButtonFlags_Repeat
-            // PressedOnClickRelease  |  <on release>*  |  <on repeat> <on repeat> .. (NOT on release)  <-- MOST COMMON! (*) only if both click/release were over bounds
-            // PressedOnClick         |  <on click>     |  <on click> <on repeat> <on repeat> ..
-            // PressedOnRelease       |  <on release>   |  <on repeat> <on repeat> .. (NOT on release)
-            // PressedOnDoubleClick   |  <on dclick>    |  <on dclick> <on repeat> <on repeat> ..
-            // FIXME-NAV: We don't honor those different behaviors.
-            if ((flags & ImGuiButtonFlags_PressedOnClickRelease) && g.IO.MouseClicked[0])
-            {
-                SetActiveID(id, window);
-                if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                    SetFocusID(id, window);
-                FocusWindow(window);
-            }
-            if (((flags & ImGuiButtonFlags_PressedOnClick) && g.IO.MouseClicked[0]) || ((flags & ImGuiButtonFlags_PressedOnDoubleClick) && g.IO.MouseDoubleClicked[0]))
-            {
-                pressed = true;
-                if (flags & ImGuiButtonFlags_NoHoldingActiveID)
-                    ClearActiveID();
-                else
-                    SetActiveID(id, window); // Hold on ID
-                FocusWindow(window);
-            }
-            if ((flags & ImGuiButtonFlags_PressedOnRelease) && g.IO.MouseReleased[0])
-            {
-                if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
-                    pressed = true;
-                ClearActiveID();
-            }
-
-            // 'Repeat' mode acts when held regardless of _PressedOn flags (see table above).
-            // Relies on repeat logic of IsMouseClicked() but we may as well do it ourselves if we end up exposing finer RepeatDelay/RepeatRate settings.
-            if ((flags & ImGuiButtonFlags_Repeat) && g.ActiveId == id && g.IO.MouseDownDuration[0] > 0.0f && IsMouseClicked(0, true))
-                pressed = true;
-        }
-
-        if (pressed)
-            g.NavDisableHighlight = true;
-    }
-
-    // Gamepad/Keyboard navigation
-    // We report navigated item as hovered but we don't set g.HoveredId to not interfere with mouse.
-    if (g.NavId == id && !g.NavDisableHighlight && g.NavDisableMouseHover && (g.ActiveId == 0 || g.ActiveId == id || g.ActiveId == window->MoveId))
-        hovered = true;
-
-    if (g.NavActivateDownId == id)
-    {
-        bool nav_activated_by_code = (g.NavActivateId == id);
-        bool nav_activated_by_inputs = IsNavInputPressed(ImGuiNavInput_Activate, (flags & ImGuiButtonFlags_Repeat) ? ImGuiInputReadMode_Repeat : ImGuiInputReadMode_Pressed);
-        if (nav_activated_by_code || nav_activated_by_inputs)
-            pressed = true;
-        if (nav_activated_by_code || nav_activated_by_inputs || g.ActiveId == id)
-        {
-            // Set active id so it can be queried by user via IsItemActive(), equivalent of holding the mouse button.
-            g.NavActivateId = id; // This is so SetActiveId assign a Nav source
-            SetActiveID(id, window);
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                SetFocusID(id, window);
-            g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right) | (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        }
-    }
-
-    bool held = false;
-    if (g.ActiveId == id)
-    {
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
-        {
-            if (g.ActiveIdIsJustActivated)
-                g.ActiveIdClickOffset = g.IO.MousePos - bb.Min;
-            if (g.IO.MouseDown[0])
-            {
-                held = true;
-            }
-            else
-            {
-                if (hovered && (flags & ImGuiButtonFlags_PressedOnClickRelease))
-                    if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
-                        if (!g.DragDropActive)
-                            pressed = true;
-                ClearActiveID();
-            }
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                g.NavDisableHighlight = true;
-        }
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-        {
-            if (g.NavActivateDownId != id)
-                ClearActiveID();
-        }
-    }
-
-    if (out_hovered) *out_hovered = hovered;
-    if (out_held) *out_held = held;
-
-    return pressed;
-}
-
-bool ImGui::ButtonEx(const char* label, const ImVec2& size_arg, ImGuiButtonFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    ImVec2 pos = window->DC.CursorPos;
-    if ((flags & ImGuiButtonFlags_AlignTextBaseLine) && style.FramePadding.y < window->DC.CurrentLineTextBaseOffset) // Try to vertically align buttons that are smaller/have no padding so that text baseline matches (bit hacky, since it shouldn't be a flag)
-        pos.y += window->DC.CurrentLineTextBaseOffset - style.FramePadding.y;
-    ImVec2 size = CalcItemSize(size_arg, label_size.x + style.FramePadding.x * 2.0f, label_size.y + style.FramePadding.y * 2.0f);
-
-    const ImRect bb(pos, pos + size);
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
-        flags |= ImGuiButtonFlags_Repeat;
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
-    if (pressed)
-        MarkItemEdited(id);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, style.FrameRounding);
-    RenderTextClipped(bb.Min + style.FramePadding, bb.Max - style.FramePadding, label, NULL, &label_size, style.ButtonTextAlign, &bb);
-
-    // Automatically close popups
-    //if (pressed && !(flags & ImGuiButtonFlags_DontClosePopups) && (window->Flags & ImGuiWindowFlags_Popup))
-    //    CloseCurrentPopup();
-
-    return pressed;
-}
-
-bool ImGui::Button(const char* label, const ImVec2& size_arg)
-{
-    return ButtonEx(label, size_arg, 0);
-}
-
-// Small buttons fits within text without additional vertical spacing.
-bool ImGui::SmallButton(const char* label)
-{
-    ImGuiContext& g = *GImGui;
-    float backup_padding_y = g.Style.FramePadding.y;
-    g.Style.FramePadding.y = 0.0f;
-    bool pressed = ButtonEx(label, ImVec2(0,0), ImGuiButtonFlags_AlignTextBaseLine);
-    g.Style.FramePadding.y = backup_padding_y;
-    return pressed;
-}
-
-bool ImGui::ArrowButtonEx(const char* str_id, ImGuiDir dir, ImVec2 size, ImGuiButtonFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiID id = window->GetID(str_id);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const float default_size = GetFrameHeight();
-    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
-        flags |= ImGuiButtonFlags_Repeat;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, g.Style.FrameRounding);
-    RenderArrow(bb.Min + ImVec2(ImMax(0.0f, size.x - g.FontSize - g.Style.FramePadding.x), ImMax(0.0f, size.y - g.FontSize - g.Style.FramePadding.y)), dir);
-
-    return pressed;
-}
-
-bool ImGui::ArrowButton(const char* str_id, ImGuiDir dir)
-{
-    float sz = GetFrameHeight();
-    return ArrowButtonEx(str_id, dir, ImVec2(sz, sz), 0);
-}
-
-// Tip: use ImGui::PushID()/PopID() to push indices or pointers in the ID stack.
-// Then you can keep 'str_id' empty or the same for all your buttons (instead of creating a string based on a non-string id)
-bool ImGui::InvisibleButton(const char* str_id, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    // Cannot use zero-size for InvisibleButton(). Unlike Button() there is not way to fallback using the label size.
-    IM_ASSERT(size_arg.x != 0.0f && size_arg.y != 0.0f);
-
-    const ImGuiID id = window->GetID(str_id);
-    ImVec2 size = CalcItemSize(size_arg, 0.0f, 0.0f);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    ItemSize(bb);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    return pressed;
-}
-
-// Button to close a window
-bool ImGui::CloseButton(ImGuiID id, const ImVec2& pos, float radius)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    // We intentionally allow interaction when clipped so that a mechanical Alt,Right,Validate sequence close a window.
-    // (this isn't the regular behavior of buttons, but it doesn't affect the user much because navigation tends to keep items visible).
-    const ImRect bb(pos - ImVec2(radius,radius), pos + ImVec2(radius,radius));
-    bool is_clipped = !ItemAdd(bb, id);
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-    if (is_clipped)
-        return pressed;
-
-    // Render
-    ImVec2 center = bb.GetCenter();
-    if (hovered)
-        window->DrawList->AddCircleFilled(center, ImMax(2.0f, radius), GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : ImGuiCol_ButtonHovered), 9);
-
-    float cross_extent = (radius * 0.7071f) - 1.0f;
-    ImU32 cross_col = GetColorU32(ImGuiCol_Text);
-    center -= ImVec2(0.5f, 0.5f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent,+cross_extent), center + ImVec2(-cross_extent,-cross_extent), cross_col, 1.0f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent,-cross_extent), center + ImVec2(-cross_extent,+cross_extent), cross_col, 1.0f);
-
-    return pressed;
-}
-
-bool ImGui::CollapseButton(ImGuiID id, const ImVec2& pos)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    ImRect bb(pos, pos + ImVec2(g.FontSize, g.FontSize) + g.Style.FramePadding * 2.0f);
-    ItemAdd(bb, id);
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_None);
-
-    ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    if (hovered || held)
-        window->DrawList->AddCircleFilled(bb.GetCenter() + ImVec2(0.0f, -0.5f), g.FontSize * 0.5f + 1.0f, col, 9);
-    RenderArrow(bb.Min + g.Style.FramePadding, window->Collapsed ? ImGuiDir_Right : ImGuiDir_Down, 1.0f);
-
-    // Switch to moving the window after mouse is moved beyond the initial drag threshold
-    if (IsItemActive() && IsMouseDragging())
-        StartMouseMovingWindow(window);
-
-    return pressed;
-}
-
-void ImGui::Image(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, const ImVec4& tint_col, const ImVec4& border_col)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    if (border_col.w > 0.0f)
-        bb.Max += ImVec2(2,2);
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    if (border_col.w > 0.0f)
-    {
-        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(border_col), 0.0f);
-        window->DrawList->AddImage(user_texture_id, bb.Min+ImVec2(1,1), bb.Max-ImVec2(1,1), uv0, uv1, GetColorU32(tint_col));
-    }
-    else
-    {
-        window->DrawList->AddImage(user_texture_id, bb.Min, bb.Max, uv0, uv1, GetColorU32(tint_col));
-    }
-}
-
-// frame_padding < 0: uses FramePadding from style (default)
-// frame_padding = 0: no framing
-// frame_padding > 0: set framing size
-// The color used are the button colors.
-bool ImGui::ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, int frame_padding, const ImVec4& bg_col, const ImVec4& tint_col)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    // Default to using texture ID as ID. User can still push string/integer prefixes.
-    // We could hash the size/uv to create a unique ID but that would prevent the user from animating UV.
-    PushID((void*)user_texture_id);
-    const ImGuiID id = window->GetID("#image");
-    PopID();
-
-    const ImVec2 padding = (frame_padding >= 0) ? ImVec2((float)frame_padding, (float)frame_padding) : style.FramePadding;
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size + padding*2);
-    const ImRect image_bb(window->DC.CursorPos + padding, window->DC.CursorPos + padding + size);
-    ItemSize(bb);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, ImClamp((float)ImMin(padding.x, padding.y), 0.0f, style.FrameRounding));
-    if (bg_col.w > 0.0f)
-        window->DrawList->AddRectFilled(image_bb.Min, image_bb.Max, GetColorU32(bg_col));
-    window->DrawList->AddImage(user_texture_id, image_bb.Min, image_bb.Max, uv0, uv1, GetColorU32(tint_col));
-
-    return pressed;
-}
-
-// Start logging ImGui output to TTY
-void ImGui::LogToTTY(int max_depth)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = stdout;
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-// Start logging ImGui output to given file
-void ImGui::LogToFile(int max_depth, const char* filename)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    if (!filename)
-    {
-        filename = g.IO.LogFilename;
-        if (!filename)
-            return;
-    }
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = ImFileOpen(filename, "ab");
-    if (!g.LogFile)
-    {
-        IM_ASSERT(g.LogFile != NULL); // Consider this an error
-        return;
-    }
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-// Start logging ImGui output to clipboard
-void ImGui::LogToClipboard(int max_depth)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = NULL;
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-void ImGui::LogFinish()
-{
-    ImGuiContext& g = *GImGui;
-    if (!g.LogEnabled)
-        return;
-
-    LogText(IM_NEWLINE);
-    if (g.LogFile != NULL)
-    {
-        if (g.LogFile == stdout)
-            fflush(g.LogFile);
-        else
-            fclose(g.LogFile);
-        g.LogFile = NULL;
-    }
-    if (g.LogClipboard.size() > 1)
-    {
-        SetClipboardText(g.LogClipboard.begin());
-        g.LogClipboard.clear();
-    }
-    g.LogEnabled = false;
-}
-
-// Helper to display logging buttons
-void ImGui::LogButtons()
-{
-    ImGuiContext& g = *GImGui;
-
-    PushID("LogButtons");
-    const bool log_to_tty = Button("Log To TTY"); SameLine();
-    const bool log_to_file = Button("Log To File"); SameLine();
-    const bool log_to_clipboard = Button("Log To Clipboard"); SameLine();
-    PushItemWidth(80.0f);
-    PushAllowKeyboardFocus(false);
-    SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL);
-    PopAllowKeyboardFocus();
-    PopItemWidth();
-    PopID();
-
-    // Start logging at the end of the function so that the buttons don't appear in the log
-    if (log_to_tty)
-        LogToTTY(g.LogAutoExpandMaxDepth);
-    if (log_to_file)
-        LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename);
-    if (log_to_clipboard)
-        LogToClipboard(g.LogAutoExpandMaxDepth);
-}
-
-bool ImGui::TreeNodeBehaviorIsOpen(ImGuiID id, ImGuiTreeNodeFlags flags)
-{
-    if (flags & ImGuiTreeNodeFlags_Leaf)
-        return true;
-
-    // We only write to the tree storage if the user clicks (or explicitly use SetNextTreeNode*** functions)
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    ImGuiStorage* storage = window->DC.StateStorage;
-
-    bool is_open;
-    if (g.NextTreeNodeOpenCond != 0)
-    {
-        if (g.NextTreeNodeOpenCond & ImGuiCond_Always)
-        {
-            is_open = g.NextTreeNodeOpenVal;
-            storage->SetInt(id, is_open);
-        }
-        else
-        {
-            // We treat ImGuiCond_Once and ImGuiCond_FirstUseEver the same because tree node state are not saved persistently.
-            const int stored_value = storage->GetInt(id, -1);
-            if (stored_value == -1)
-            {
-                is_open = g.NextTreeNodeOpenVal;
-                storage->SetInt(id, is_open);
-            }
-            else
-            {
-                is_open = stored_value != 0;
-            }
-        }
-        g.NextTreeNodeOpenCond = 0;
-    }
-    else
-    {
-        is_open = storage->GetInt(id, (flags & ImGuiTreeNodeFlags_DefaultOpen) ? 1 : 0) != 0;
-    }
-
-    // When logging is enabled, we automatically expand tree nodes (but *NOT* collapsing headers.. seems like sensible behavior).
-    // NB- If we are above max depth we still allow manually opened nodes to be logged.
-    if (g.LogEnabled && !(flags & ImGuiTreeNodeFlags_NoAutoOpenOnLog) && window->DC.TreeDepth < g.LogAutoExpandMaxDepth)
-        is_open = true;
-
-    return is_open;
-}
-
-bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* label, const char* label_end)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const bool display_frame = (flags & ImGuiTreeNodeFlags_Framed) != 0;
-    const ImVec2 padding = (display_frame || (flags & ImGuiTreeNodeFlags_FramePadding)) ? style.FramePadding : ImVec2(style.FramePadding.x, 0.0f);
-
-    if (!label_end)
-        label_end = FindRenderedTextEnd(label);
-    const ImVec2 label_size = CalcTextSize(label, label_end, false);
-
-    // We vertically grow up to current line height up the typical widget height.
-    const float text_base_offset_y = ImMax(padding.y, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
-    const float frame_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + style.FramePadding.y*2), label_size.y + padding.y*2);
-    ImRect frame_bb = ImRect(window->DC.CursorPos, ImVec2(window->Pos.x + GetContentRegionMax().x, window->DC.CursorPos.y + frame_height));
-    if (display_frame)
-    {
-        // Framed header expand a little outside the default padding
-        frame_bb.Min.x -= (float)(int)(window->WindowPadding.x*0.5f) - 1;
-        frame_bb.Max.x += (float)(int)(window->WindowPadding.x*0.5f) - 1;
-    }
-
-    const float text_offset_x = (g.FontSize + (display_frame ? padding.x*3 : padding.x*2));   // Collapser arrow width + Spacing
-    const float text_width = g.FontSize + (label_size.x > 0.0f ? label_size.x + padding.x*2 : 0.0f);   // Include collapser
-    ItemSize(ImVec2(text_width, frame_height), text_base_offset_y);
-
-    // For regular tree nodes, we arbitrary allow to click past 2 worth of ItemSpacing
-    // (Ideally we'd want to add a flag for the user to specify if we want the hit test to be done up to the right side of the content or not)
-    const ImRect interact_bb = display_frame ? frame_bb : ImRect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + text_width + style.ItemSpacing.x*2, frame_bb.Max.y);
-    bool is_open = TreeNodeBehaviorIsOpen(id, flags);
-
-    // Store a flag for the current depth to tell if we will allow closing this node when navigating one of its child.
-    // For this purpose we essentially compare if g.NavIdIsAlive went from 0 to 1 between TreeNode() and TreePop().
-    // This is currently only support 32 level deep and we are fine with (1 << Depth) overflowing into a zero.
-    if (is_open && !g.NavIdIsAlive && (flags & ImGuiTreeNodeFlags_NavLeftJumpsBackHere) && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        window->DC.TreeDepthMayJumpToParentOnPop |= (1 << window->DC.TreeDepth);
-
-    bool item_add = ItemAdd(interact_bb, id);
-    window->DC.LastItemStatusFlags |= ImGuiItemStatusFlags_HasDisplayRect;
-    window->DC.LastItemDisplayRect = frame_bb;
-
-    if (!item_add)
-    {
-        if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-            TreePushRawID(id);
-        return is_open;
-    }
-
-    // Flags that affects opening behavior:
-    // - 0(default) ..................... single-click anywhere to open
-    // - OpenOnDoubleClick .............. double-click anywhere to open
-    // - OpenOnArrow .................... single-click on arrow to open
-    // - OpenOnDoubleClick|OpenOnArrow .. single-click on arrow or double-click anywhere to open
-    ImGuiButtonFlags button_flags = ImGuiButtonFlags_NoKeyModifiers | ((flags & ImGuiTreeNodeFlags_AllowItemOverlap) ? ImGuiButtonFlags_AllowItemOverlap : 0);
-    if (!(flags & ImGuiTreeNodeFlags_Leaf))
-        button_flags |= ImGuiButtonFlags_PressedOnDragDropHold;
-    if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
-        button_flags |= ImGuiButtonFlags_PressedOnDoubleClick | ((flags & ImGuiTreeNodeFlags_OpenOnArrow) ? ImGuiButtonFlags_PressedOnClickRelease : 0);
-
-    bool hovered, held, pressed = ButtonBehavior(interact_bb, id, &hovered, &held, button_flags);
-    if (!(flags & ImGuiTreeNodeFlags_Leaf))
-    {
-        bool toggled = false;
-        if (pressed)
-        {
-            toggled = !(flags & (ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick)) || (g.NavActivateId == id);
-            if (flags & ImGuiTreeNodeFlags_OpenOnArrow)
-                toggled |= IsMouseHoveringRect(interact_bb.Min, ImVec2(interact_bb.Min.x + text_offset_x, interact_bb.Max.y)) && (!g.NavDisableMouseHover);
-            if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
-                toggled |= g.IO.MouseDoubleClicked[0];
-            if (g.DragDropActive && is_open) // When using Drag and Drop "hold to open" we keep the node highlighted after opening, but never close it again.
-                toggled = false;
-        }
-
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Left && is_open)
-        {
-            toggled = true;
-            NavMoveRequestCancel();
-        }
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right && !is_open) // If there's something upcoming on the line we may want to give it the priority?
-        {
-            toggled = true;
-            NavMoveRequestCancel();
-        }
-
-        if (toggled)
-        {
-            is_open = !is_open;
-            window->DC.StateStorage->SetInt(id, is_open);
-        }
-    }
-    if (flags & ImGuiTreeNodeFlags_AllowItemOverlap)
-        SetItemAllowOverlap();
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
-    const ImVec2 text_pos = frame_bb.Min + ImVec2(text_offset_x, text_base_offset_y);
-    if (display_frame)
-    {
-        // Framed type
-        RenderFrame(frame_bb.Min, frame_bb.Max, col, true, style.FrameRounding);
-        RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
-        RenderArrow(frame_bb.Min + ImVec2(padding.x, text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 1.0f);
-        if (g.LogEnabled)
-        {
-            // NB: '##' is normally used to hide text (as a library-wide feature), so we need to specify the text range to make sure the ## aren't stripped out here.
-            const char log_prefix[] = "\n##";
-            const char log_suffix[] = "##";
-            LogRenderedText(&text_pos, log_prefix, log_prefix+3);
-            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
-            LogRenderedText(&text_pos, log_suffix+1, log_suffix+3);
-        }
-        else
-        {
-            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
-        }
-    }
-    else
-    {
-        // Unframed typed for tree nodes
-        if (hovered || (flags & ImGuiTreeNodeFlags_Selected))
-        {
-            RenderFrame(frame_bb.Min, frame_bb.Max, col, false);
-            RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
-        }
-
-        if (flags & ImGuiTreeNodeFlags_Bullet)
-            RenderBullet(frame_bb.Min + ImVec2(text_offset_x * 0.5f, g.FontSize*0.50f + text_base_offset_y));
-        else if (!(flags & ImGuiTreeNodeFlags_Leaf))
-            RenderArrow(frame_bb.Min + ImVec2(padding.x, g.FontSize*0.15f + text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 0.70f);
-        if (g.LogEnabled)
-            LogRenderedText(&text_pos, ">");
-        RenderText(text_pos, label, label_end, false);
-    }
-
-    if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        TreePushRawID(id);
-    return is_open;
-}
-
-// CollapsingHeader returns true when opened but do not indent nor push into the ID stack (because of the ImGuiTreeNodeFlags_NoTreePushOnOpen flag).
-// This is basically the same as calling TreeNodeEx(label, ImGuiTreeNodeFlags_CollapsingHeader). You can remove the _NoTreePushOnOpen flag if you want behavior closer to normal TreeNode().
-bool ImGui::CollapsingHeader(const char* label, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags | ImGuiTreeNodeFlags_CollapsingHeader, label);
-}
-
-bool ImGui::CollapsingHeader(const char* label, bool* p_open, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    if (p_open && !*p_open)
-        return false;
-
-    ImGuiID id = window->GetID(label);
-    bool is_open = TreeNodeBehavior(id, flags | ImGuiTreeNodeFlags_CollapsingHeader | (p_open ? ImGuiTreeNodeFlags_AllowItemOverlap : 0), label);
-    if (p_open)
-    {
-        // Create a small overlapping close button // FIXME: We can evolve this into user accessible helpers to add extra buttons on title bars, headers, etc.
-        ImGuiContext& g = *GImGui;
-        ImGuiItemHoveredDataBackup last_item_backup;
-        float button_radius = g.FontSize * 0.5f;
-        ImVec2 button_center = ImVec2(ImMin(window->DC.LastItemRect.Max.x, window->ClipRect.Max.x) - g.Style.FramePadding.x - button_radius, window->DC.LastItemRect.GetCenter().y);
-        if (CloseButton(window->GetID((void*)(intptr_t)(id+1)), button_center, button_radius))
-            *p_open = false;
-        last_item_backup.Restore();
-    }
-
-    return is_open;
-}
-
-bool ImGui::TreeNodeEx(const char* label, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags, label, NULL);
-}
-
-bool ImGui::TreeNodeExV(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    return TreeNodeBehavior(window->GetID(str_id), flags, g.TempBuffer, label_end);
-}
-
-bool ImGui::TreeNodeExV(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    return TreeNodeBehavior(window->GetID(ptr_id), flags, g.TempBuffer, label_end);
-}
-
-bool ImGui::TreeNodeV(const char* str_id, const char* fmt, va_list args)
-{
-    return TreeNodeExV(str_id, 0, fmt, args);
-}
-
-bool ImGui::TreeNodeV(const void* ptr_id, const char* fmt, va_list args)
-{
-    return TreeNodeExV(ptr_id, 0, fmt, args);
-}
-
-bool ImGui::TreeNodeEx(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(str_id, flags, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNodeEx(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(ptr_id, flags, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const char* str_id, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(str_id, 0, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const void* ptr_id, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(ptr_id, 0, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const char* label)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-    return TreeNodeBehavior(window->GetID(label), 0, label, NULL);
-}
-
-void ImGui::TreeAdvanceToLabelPos()
-{
-    ImGuiContext& g = *GImGui;
-    g.CurrentWindow->DC.CursorPos.x += GetTreeNodeToLabelSpacing();
-}
-
-// Horizontal distance preceding label when using TreeNode() or Bullet()
-float ImGui::GetTreeNodeToLabelSpacing()
-{
-    ImGuiContext& g = *GImGui;
-    return g.FontSize + (g.Style.FramePadding.x * 2.0f);
-}
-
-void ImGui::SetNextTreeNodeOpen(bool is_open, ImGuiCond cond)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow->SkipItems)
-        return;
-    g.NextTreeNodeOpenVal = is_open;
-    g.NextTreeNodeOpenCond = cond ? cond : ImGuiCond_Always;
-}
-
 void ImGui::PushID(const char* str_id)
 {
     ImGuiWindow* window = GetCurrentWindowRead();
@@ -8957,4093 +6069,6 @@
     return GImGui->CurrentWindow->GetID(ptr_id);
 }
 
-void ImGui::Bullet()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize, line_height));
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-    {
-        SameLine(0, style.FramePadding.x*2);
-        return;
-    }
-
-    // Render and stay on same line
-    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
-    SameLine(0, style.FramePadding.x*2);
-}
-
-// Text with a little bullet aligned to the typical tree node.
-void ImGui::BulletTextV(const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const char* text_begin = g.TempBuffer;
-    const char* text_end = text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    const ImVec2 label_size = CalcTextSize(text_begin, text_end, false);
-    const float text_base_offset_y = ImMax(0.0f, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
-    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize + (label_size.x > 0.0f ? (label_size.x + style.FramePadding.x*2) : 0.0f), ImMax(line_height, label_size.y)));  // Empty text doesn't add padding
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    // Render
-    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
-    RenderText(bb.Min+ImVec2(g.FontSize + style.FramePadding.x*2, text_base_offset_y), text_begin, text_end, false);
-}
-
-void ImGui::BulletText(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    BulletTextV(fmt, args);
-    va_end(args);
-}
-
-static inline int DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format)
-{
-    if (data_type == ImGuiDataType_S32 || data_type == ImGuiDataType_U32)   // Signedness doesn't matter when pushing the argument
-        return ImFormatString(buf, buf_size, format, *(const ImU32*)data_ptr);
-    if (data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)   // Signedness doesn't matter when pushing the argument
-        return ImFormatString(buf, buf_size, format, *(const ImU64*)data_ptr);
-    if (data_type == ImGuiDataType_Float)
-        return ImFormatString(buf, buf_size, format, *(const float*)data_ptr);
-    if (data_type == ImGuiDataType_Double)
-        return ImFormatString(buf, buf_size, format, *(const double*)data_ptr);
-    IM_ASSERT(0);
-    return 0;
-}
-
-// FIXME: Adding support for clamping on boundaries of the data type would be nice.
-static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg1, const void* arg2)
-{
-    IM_ASSERT(op == '+' || op == '-');
-    switch (data_type)
-    {
-        case ImGuiDataType_S32:
-            if (op == '+')      *(int*)output = *(const int*)arg1 + *(const int*)arg2;
-            else if (op == '-') *(int*)output = *(const int*)arg1 - *(const int*)arg2;
-            return;
-        case ImGuiDataType_U32:
-            if (op == '+')      *(unsigned int*)output = *(const unsigned int*)arg1 + *(const ImU32*)arg2;
-            else if (op == '-') *(unsigned int*)output = *(const unsigned int*)arg1 - *(const ImU32*)arg2;
-            return;
-        case ImGuiDataType_S64:
-            if (op == '+')      *(ImS64*)output = *(const ImS64*)arg1 + *(const ImS64*)arg2;
-            else if (op == '-') *(ImS64*)output = *(const ImS64*)arg1 - *(const ImS64*)arg2;
-            return;
-        case ImGuiDataType_U64:
-            if (op == '+')      *(ImU64*)output = *(const ImU64*)arg1 + *(const ImU64*)arg2;
-            else if (op == '-') *(ImU64*)output = *(const ImU64*)arg1 - *(const ImU64*)arg2;
-            return;
-        case ImGuiDataType_Float:
-            if (op == '+')      *(float*)output = *(const float*)arg1 + *(const float*)arg2;
-            else if (op == '-') *(float*)output = *(const float*)arg1 - *(const float*)arg2;
-            return;
-        case ImGuiDataType_Double:
-            if (op == '+')      *(double*)output = *(const double*)arg1 + *(const double*)arg2;
-            else if (op == '-') *(double*)output = *(const double*)arg1 - *(const double*)arg2;
-            return;
-        case ImGuiDataType_COUNT: break;
-    }
-    IM_ASSERT(0);
-}
-
-struct ImGuiDataTypeInfo
-{
-    size_t      Size;
-    const char* PrintFmt;   // Unused
-    const char* ScanFmt;
-};
-
-static const ImGuiDataTypeInfo GDataTypeInfo[] =
-{
-    { sizeof(int),          "%d",   "%d"    },
-    { sizeof(unsigned int), "%u",   "%u"    },
-#ifdef _MSC_VER
-    { sizeof(ImS64),        "%I64d","%I64d" },
-    { sizeof(ImU64),        "%I64u","%I64u" },
-#else
-    { sizeof(ImS64),        "%lld", "%lld"  },
-    { sizeof(ImU64),        "%llu", "%llu"  },
-#endif
-    { sizeof(float),        "%f",   "%f"    },  // float are promoted to double in va_arg
-    { sizeof(double),       "%f",   "%lf"   },
-};
-IM_STATIC_ASSERT(IM_ARRAYSIZE(GDataTypeInfo) == ImGuiDataType_COUNT);
-
-// User can input math operators (e.g. +100) to edit a numerical values.
-// NB: This is _not_ a full expression evaluator. We should probably add one and replace this dumb mess..
-static bool DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format)
-{
-    while (ImCharIsBlankA(*buf))
-        buf++;
-
-    // We don't support '-' op because it would conflict with inputing negative value.
-    // Instead you can use +-100 to subtract from an existing value
-    char op = buf[0];
-    if (op == '+' || op == '*' || op == '/')
-    {
-        buf++;
-        while (ImCharIsBlankA(*buf))
-            buf++;
-    }
-    else
-    {
-        op = 0;
-    }
-    if (!buf[0])
-        return false;
-
-    // Copy the value in an opaque buffer so we can compare at the end of the function if it changed at all.
-    IM_ASSERT(data_type < ImGuiDataType_COUNT);
-    int data_backup[2];
-    IM_ASSERT(GDataTypeInfo[data_type].Size <= sizeof(data_backup));
-    memcpy(data_backup, data_ptr, GDataTypeInfo[data_type].Size);
-
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].ScanFmt;
-
-    int arg1i = 0;
-    if (data_type == ImGuiDataType_S32)
-    {
-        int* v = (int*)data_ptr;
-        int arg0i = *v;
-        float arg1f = 0.0f;
-        if (op && sscanf(initial_value_buf, format, &arg0i) < 1)
-            return false;
-        // Store operand in a float so we can use fractional value for multipliers (*1.1), but constant always parsed as integer so we can fit big integers (e.g. 2000000003) past float precision
-        if (op == '+')      { if (sscanf(buf, "%d", &arg1i)) *v = (int)(arg0i + arg1i); }                   // Add (use "+-" to subtract)
-        else if (op == '*') { if (sscanf(buf, "%f", &arg1f)) *v = (int)(arg0i * arg1f); }                   // Multiply
-        else if (op == '/') { if (sscanf(buf, "%f", &arg1f) && arg1f != 0.0f) *v = (int)(arg0i / arg1f); }  // Divide
-        else                { if (sscanf(buf, format, &arg1i) == 1) *v = arg1i; }                           // Assign constant
-    }
-    else if (data_type == ImGuiDataType_U32 || data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)
-    {
-        // Assign constant
-        // FIXME: We don't bother handling support for legacy operators since they are a little too crappy. Instead we may implement a proper expression evaluator in the future.
-        sscanf(buf, format, data_ptr);
-    }
-    else if (data_type == ImGuiDataType_Float)
-    {
-        // For floats we have to ignore format with precision (e.g. "%.2f") because sscanf doesn't take them in
-        format = "%f";
-        float* v = (float*)data_ptr;
-        float arg0f = *v, arg1f = 0.0f;
-        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
-            return false;
-        if (sscanf(buf, format, &arg1f) < 1)
-            return false;
-        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
-        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
-        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
-        else                { *v = arg1f; }                            // Assign constant
-    }
-    else if (data_type == ImGuiDataType_Double)
-    {
-        format = "%lf"; // scanf differentiate float/double unlike printf which forces everything to double because of ellipsis
-        double* v = (double*)data_ptr;
-        double arg0f = *v, arg1f = 0.0;
-        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
-            return false;
-        if (sscanf(buf, format, &arg1f) < 1)
-            return false;
-        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
-        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
-        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
-        else                { *v = arg1f; }                            // Assign constant
-    }
-    return memcmp(data_backup, data_ptr, GDataTypeInfo[data_type].Size) != 0;
-}
-
-// Create text input in place of a slider (when CTRL+Clicking on slider)
-// FIXME: Logic is messy and confusing.
-bool ImGui::InputScalarAsWidgetReplacement(const ImRect& bb, ImGuiID id, const char* label, ImGuiDataType data_type, void* data_ptr, const char* format)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-
-    // Our replacement widget will override the focus ID (registered previously to allow for a TAB focus to happen)
-    // On the first frame, g.ScalarAsInputTextId == 0, then on subsequent frames it becomes == id
-    SetActiveID(g.ScalarAsInputTextId, window);
-    g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-    SetHoveredID(0);
-    FocusableItemUnregister(window);
-
-    char fmt_buf[32];
-    char data_buf[32];
-    format = ImParseFormatTrimDecorations(format, fmt_buf, IM_ARRAYSIZE(fmt_buf));
-    DataTypeFormatString(data_buf, IM_ARRAYSIZE(data_buf), data_type, data_ptr, format);
-    ImStrTrimBlanks(data_buf);
-    ImGuiInputTextFlags flags = ImGuiInputTextFlags_AutoSelectAll | ((data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImGuiInputTextFlags_CharsScientific : ImGuiInputTextFlags_CharsDecimal);
-    bool value_changed = InputTextEx(label, data_buf, IM_ARRAYSIZE(data_buf), bb.GetSize(), flags);
-    if (g.ScalarAsInputTextId == 0)     // First frame we started displaying the InputText widget
-    {
-        IM_ASSERT(g.ActiveId == id);    // InputText ID expected to match the Slider ID
-        g.ScalarAsInputTextId = g.ActiveId;
-        SetHoveredID(id);
-    }
-    if (value_changed)
-        return DataTypeApplyOpFromText(data_buf, g.InputTextState.InitialText.Data, data_type, data_ptr, NULL);
-    return false;
-}
-
-// We don't use strchr() because our strings are usually very short and often start with '%'
-const char* ImParseFormatFindStart(const char* fmt)
-{
-    while (char c = fmt[0])
-    {
-        if (c == '%' && fmt[1] != '%')
-            return fmt;
-        else if (c == '%')
-            fmt++;
-        fmt++;
-    }
-    return fmt;
-}
-
-const char* ImParseFormatFindEnd(const char* fmt)
-{
-    // Printf/scanf types modifiers: I/L/h/j/l/t/w/z. Other uppercase letters qualify as types aka end of the format.
-    if (fmt[0] != '%')
-        return fmt;
-    const unsigned int ignored_uppercase_mask = (1 << ('I'-'A')) | (1 << ('L'-'A'));
-    const unsigned int ignored_lowercase_mask = (1 << ('h'-'a')) | (1 << ('j'-'a')) | (1 << ('l'-'a')) | (1 << ('t'-'a')) | (1 << ('w'-'a')) | (1 << ('z'-'a'));
-    for (char c; (c = *fmt) != 0; fmt++)
-    {
-        if (c >= 'A' && c <= 'Z' && ((1 << (c - 'A')) & ignored_uppercase_mask) == 0)
-            return fmt + 1;
-        if (c >= 'a' && c <= 'z' && ((1 << (c - 'a')) & ignored_lowercase_mask) == 0)
-            return fmt + 1;
-    }
-    return fmt;
-}
-
-// Extract the format out of a format string with leading or trailing decorations
-//  fmt = "blah blah"  -> return fmt
-//  fmt = "%.3f"       -> return fmt
-//  fmt = "hello %.3f" -> return fmt + 6
-//  fmt = "%.3f hello" -> return buf written with "%.3f"
-const char* ImParseFormatTrimDecorations(const char* fmt, char* buf, int buf_size)
-{
-    const char* fmt_start = ImParseFormatFindStart(fmt);
-    if (fmt_start[0] != '%')
-        return fmt;
-    const char* fmt_end = ImParseFormatFindEnd(fmt_start);
-    if (fmt_end[0] == 0) // If we only have leading decoration, we don't need to copy the data.
-        return fmt_start;
-    ImStrncpy(buf, fmt_start, ImMin((int)(fmt_end + 1 - fmt_start), buf_size));
-    return buf;
-}
-
-// Parse display precision back from the display format string
-// FIXME: This is still used by some navigation code path to infer a minimum tweak step, but we should aim to rework widgets so it isn't needed.
-int ImParseFormatPrecision(const char* fmt, int default_precision)
-{
-    fmt = ImParseFormatFindStart(fmt);
-    if (fmt[0] != '%')
-        return default_precision;
-    fmt++;
-    while (*fmt >= '0' && *fmt <= '9')
-        fmt++;
-    int precision = INT_MAX;
-    if (*fmt == '.')
-    {
-        fmt = ImAtoi<int>(fmt + 1, &precision);
-        if (precision < 0 || precision > 99)
-            precision = default_precision;
-    }
-    if (*fmt == 'e' || *fmt == 'E') // Maximum precision with scientific notation
-        precision = -1;
-    if ((*fmt == 'g' || *fmt == 'G') && precision == INT_MAX)
-        precision = -1;
-    return (precision == INT_MAX) ? default_precision : precision;
-}
-
-static float GetMinimumStepAtDecimalPrecision(int decimal_precision)
-{
-    static const float min_steps[10] = { 1.0f, 0.1f, 0.01f, 0.001f, 0.0001f, 0.00001f, 0.000001f, 0.0000001f, 0.00000001f, 0.000000001f };
-    if (decimal_precision < 0)
-        return FLT_MIN;
-    return (decimal_precision >= 0 && decimal_precision < 10) ? min_steps[decimal_precision] : ImPow(10.0f, (float)-decimal_precision);
-}
-
-template<typename TYPE, typename SIGNEDTYPE>
-static inline TYPE RoundScalarWithFormat(const char* format, ImGuiDataType data_type, TYPE v)
-{
-    const char* fmt_start = ImParseFormatFindStart(format);
-    if (fmt_start[0] != '%' || fmt_start[1] == '%') // Don't apply if the value is not visible in the format string
-        return v;
-    char v_str[64];
-    ImFormatString(v_str, IM_ARRAYSIZE(v_str), fmt_start, v);
-    const char* p = v_str;
-    while (*p == ' ')
-        p++;
-    if (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double)
-        v = (TYPE)ImAtof(p);
-    else
-        ImAtoi(p, (SIGNEDTYPE*)&v);
-    return v;
-}
-
-template<typename TYPE, typename FLOATTYPE>
-static inline float SliderBehaviorCalcRatioFromValue(ImGuiDataType data_type, TYPE v, TYPE v_min, TYPE v_max, float power, float linear_zero_pos)
-{
-    if (v_min == v_max)
-        return 0.0f;
-
-    const bool is_power = (power != 1.0f) && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double);
-    const TYPE v_clamped = (v_min < v_max) ? ImClamp(v, v_min, v_max) : ImClamp(v, v_max, v_min);
-    if (is_power)
-    {
-        if (v_clamped < 0.0f)
-        {
-            const float f = 1.0f - (float)((v_clamped - v_min) / (ImMin((TYPE)0, v_max) - v_min));
-            return (1.0f - ImPow(f, 1.0f/power)) * linear_zero_pos;
-        }
-        else
-        {
-            const float f = (float)((v_clamped - ImMax((TYPE)0, v_min)) / (v_max - ImMax((TYPE)0, v_min)));
-            return linear_zero_pos + ImPow(f, 1.0f/power) * (1.0f - linear_zero_pos);
-        }
-    }
-
-    // Linear slider
-    return (float)((FLOATTYPE)(v_clamped - v_min) / (FLOATTYPE)(v_max - v_min));
-}
-
-// FIXME: Move some of the code into SliderBehavior(). Current responsability is larger than what the equivalent DragBehaviorT<> does, we also do some rendering, etc.
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
-{
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const bool is_horizontal = (flags & ImGuiSliderFlags_Vertical) == 0;
-    const bool is_decimal = (data_type == ImGuiDataType_Float) || (data_type == ImGuiDataType_Double);
-    const bool is_power = (power != 1.0f) && is_decimal;
-
-    const float grab_padding = 2.0f;
-    const float slider_sz = is_horizontal ? (bb.GetWidth() - grab_padding * 2.0f) : (bb.GetHeight() - grab_padding * 2.0f);
-    float grab_sz = style.GrabMinSize;
-    SIGNEDTYPE v_range = (v_min < v_max ? v_max - v_min : v_min - v_max);
-    if (!is_decimal && v_range >= 0)                                             // v_range < 0 may happen on integer overflows
-        grab_sz = ImMax((float)(slider_sz / (v_range + 1)), style.GrabMinSize);  // For integer sliders: if possible have the grab size represent 1 unit
-    grab_sz = ImMin(grab_sz, slider_sz);
-    const float slider_usable_sz = slider_sz - grab_sz;
-    const float slider_usable_pos_min = (is_horizontal ? bb.Min.x : bb.Min.y) + grab_padding + grab_sz*0.5f;
-    const float slider_usable_pos_max = (is_horizontal ? bb.Max.x : bb.Max.y) - grab_padding - grab_sz*0.5f;
-
-    // For power curve sliders that cross over sign boundary we want the curve to be symmetric around 0.0f
-    float linear_zero_pos;   // 0.0->1.0f
-    if (is_power && v_min * v_max < 0.0f)
-    {
-        // Different sign
-        const FLOATTYPE linear_dist_min_to_0 = ImPow(v_min >= 0 ? (FLOATTYPE)v_min : -(FLOATTYPE)v_min, (FLOATTYPE)1.0f/power);
-        const FLOATTYPE linear_dist_max_to_0 = ImPow(v_max >= 0 ? (FLOATTYPE)v_max : -(FLOATTYPE)v_max, (FLOATTYPE)1.0f/power);
-        linear_zero_pos = (float)(linear_dist_min_to_0 / (linear_dist_min_to_0 + linear_dist_max_to_0));
-    }
-    else
-    {
-        // Same sign
-        linear_zero_pos = v_min < 0.0f ? 1.0f : 0.0f;
-    }
-
-    // Process interacting with the slider
-    bool value_changed = false;
-    if (g.ActiveId == id)
-    {
-        bool set_new_value = false;
-        float clicked_t = 0.0f;
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
-        {
-            if (!g.IO.MouseDown[0])
-            {
-                ClearActiveID();
-            }
-            else
-            {
-                const float mouse_abs_pos = is_horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
-                clicked_t = (slider_usable_sz > 0.0f) ? ImClamp((mouse_abs_pos - slider_usable_pos_min) / slider_usable_sz, 0.0f, 1.0f) : 0.0f;
-                if (!is_horizontal)
-                    clicked_t = 1.0f - clicked_t;
-                set_new_value = true;
-            }
-        }
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-        {
-            const ImVec2 delta2 = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard | ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 0.0f, 0.0f);
-            float delta = is_horizontal ? delta2.x : -delta2.y;
-            if (g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
-            {
-                ClearActiveID();
-            }
-            else if (delta != 0.0f)
-            {
-                clicked_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
-                const int decimal_precision = is_decimal ? ImParseFormatPrecision(format, 3) : 0;
-                if ((decimal_precision > 0) || is_power)
-                {
-                    delta /= 100.0f;    // Gamepad/keyboard tweak speeds in % of slider bounds
-                    if (IsNavInputDown(ImGuiNavInput_TweakSlow))
-                        delta /= 10.0f;
-                }
-                else
-                {
-                    if ((v_range >= -100.0f && v_range <= 100.0f) || IsNavInputDown(ImGuiNavInput_TweakSlow))
-                        delta = ((delta < 0.0f) ? -1.0f : +1.0f) / (float)v_range; // Gamepad/keyboard tweak speeds in integer steps
-                    else
-                        delta /= 100.0f;
-                }
-                if (IsNavInputDown(ImGuiNavInput_TweakFast))
-                    delta *= 10.0f;
-                set_new_value = true;
-                if ((clicked_t >= 1.0f && delta > 0.0f) || (clicked_t <= 0.0f && delta < 0.0f)) // This is to avoid applying the saturation when already past the limits
-                    set_new_value = false;
-                else
-                    clicked_t = ImSaturate(clicked_t + delta);
-            }
-        }
-
-        if (set_new_value)
-        {
-            TYPE v_new;
-            if (is_power)
-            {
-                // Account for power curve scale on both sides of the zero
-                if (clicked_t < linear_zero_pos)
-                {
-                    // Negative: rescale to the negative range before powering
-                    float a = 1.0f - (clicked_t / linear_zero_pos);
-                    a = ImPow(a, power);
-                    v_new = ImLerp(ImMin(v_max, (TYPE)0), v_min, a);
-                }
-                else
-                {
-                    // Positive: rescale to the positive range before powering
-                    float a;
-                    if (ImFabs(linear_zero_pos - 1.0f) > 1.e-6f)
-                        a = (clicked_t - linear_zero_pos) / (1.0f - linear_zero_pos);
-                    else
-                        a = clicked_t;
-                    a = ImPow(a, power);
-                    v_new = ImLerp(ImMax(v_min, (TYPE)0), v_max, a);
-                }
-            }
-            else
-            {
-                // Linear slider
-                if (is_decimal)
-                {
-                    v_new = ImLerp(v_min, v_max, clicked_t);
-                }
-                else
-                {
-                    // For integer values we want the clicking position to match the grab box so we round above
-                    // This code is carefully tuned to work with large values (e.g. high ranges of U64) while preserving this property..
-                    FLOATTYPE v_new_off_f = (v_max - v_min) * clicked_t;
-                    TYPE v_new_off_floor = (TYPE)(v_new_off_f);
-                    TYPE v_new_off_round = (TYPE)(v_new_off_f + (FLOATTYPE)0.5);
-                    if (!is_decimal && v_new_off_floor < v_new_off_round)
-                        v_new = v_min + v_new_off_round;
-                    else
-                        v_new = v_min + v_new_off_floor;
-                }
-            }
-
-            // Round to user desired precision based on format string
-            v_new = RoundScalarWithFormat<TYPE,SIGNEDTYPE>(format, data_type, v_new);
-
-            // Apply result
-            if (*v != v_new)
-            {
-                *v = v_new;
-                value_changed = true;
-            }
-        }
-    }
-
-    // Output grab position so it can be displayed by the caller
-    float grab_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
-    if (!is_horizontal)
-        grab_t = 1.0f - grab_t;
-    const float grab_pos = ImLerp(slider_usable_pos_min, slider_usable_pos_max, grab_t);
-    if (is_horizontal)
-        *out_grab_bb = ImRect(grab_pos - grab_sz*0.5f, bb.Min.y + grab_padding, grab_pos + grab_sz*0.5f, bb.Max.y - grab_padding);
-    else
-        *out_grab_bb = ImRect(bb.Min.x + grab_padding, grab_pos - grab_sz*0.5f, bb.Max.x - grab_padding, grab_pos + grab_sz*0.5f);
-
-    return value_changed;
-}
-
-// For 32-bits and larger types, slider bounds are limited to half the natural type range.
-// So e.g. an integer Slider between INT_MAX-10 and INT_MAX will fail, but an integer Slider between INT_MAX/2-10 and INT_MAX/2 will be ok.
-// It would be possible to lift that limitation with some work but it doesn't seem to be worth it for sliders.
-bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
-{
-    switch (data_type)
-    {
-    case ImGuiDataType_S32:
-        IM_ASSERT(*(const ImS32*)v_min >= IM_S32_MIN/2 && *(const ImS32*)v_max <= IM_S32_MAX/2);
-        return SliderBehaviorT<ImS32, ImS32, float >(bb, id, data_type, (ImS32*)v,  *(const ImS32*)v_min,  *(const ImS32*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_U32:
-        IM_ASSERT(*(const ImU32*)v_min <= IM_U32_MAX/2);
-        return SliderBehaviorT<ImU32, ImS32, float >(bb, id, data_type, (ImU32*)v,  *(const ImU32*)v_min,  *(const ImU32*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_S64:
-        IM_ASSERT(*(const ImS64*)v_min >= IM_S64_MIN/2 && *(const ImS64*)v_max <= IM_S64_MAX/2);
-        return SliderBehaviorT<ImS64, ImS64, double>(bb, id, data_type, (ImS64*)v,  *(const ImS64*)v_min,  *(const ImS64*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_U64:
-        IM_ASSERT(*(const ImU64*)v_min <= IM_U64_MAX/2);
-        return SliderBehaviorT<ImU64, ImS64, double>(bb, id, data_type, (ImU64*)v,  *(const ImU64*)v_min,  *(const ImU64*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_Float:
-        IM_ASSERT(*(const float*)v_min >= -FLT_MAX/2.0f && *(const float*)v_max <= FLT_MAX/2.0f);
-        return SliderBehaviorT<float, float, float >(bb, id, data_type, (float*)v,  *(const float*)v_min,  *(const float*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_Double:
-        IM_ASSERT(*(const double*)v_min >= -DBL_MAX/2.0f && *(const double*)v_max <= DBL_MAX/2.0f);
-        return SliderBehaviorT<double,double,double>(bb, id, data_type, (double*)v, *(const double*)v_min, *(const double*)v_max, format, power, flags, out_grab_bb);
-    case ImGuiDataType_COUNT: break;
-    }
-    IM_ASSERT(0);
-    return false;
-}
-
-// FIXME-LEGACY: Prior to 1.61 our DragInt() function internally used floats and because of this the compile-time default value for format was "%.0f".
-// Even though we changed the compile-time default, we expect users to have carried %f around, which would break the display of DragInt() calls.
-// To honor backward compatibility we are rewriting the format string, unless IMGUI_DISABLE_OBSOLETE_FUNCTIONS is enabled. What could possibly go wrong?!
-static const char* PatchFormatStringFloatToInt(const char* fmt)
-{
-    if (fmt[0] == '%' && fmt[1] == '.' && fmt[2] == '0' && fmt[3] == 'f' && fmt[4] == 0) // Fast legacy path for "%.0f" which is expected to be the most common case.
-        return "%d";
-    const char* fmt_start = ImParseFormatFindStart(fmt);    // Find % (if any, and ignore %%)
-    const char* fmt_end = ImParseFormatFindEnd(fmt_start);  // Find end of format specifier, which itself is an exercise of confidence/recklessness (because snprintf is dependent on libc or user).
-    if (fmt_end > fmt_start && fmt_end[-1] == 'f')
-    {
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-        if (fmt_start == fmt && fmt_end[0] == 0)
-            return "%d";
-        ImGuiContext& g = *GImGui;
-        ImFormatString(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), "%.*s%%d%s", (int)(fmt_start - fmt), fmt, fmt_end); // Honor leading and trailing decorations, but lose alignment/precision.
-        return g.TempBuffer;
-#else
-        IM_ASSERT(0 && "DragInt(): Invalid format string!"); // Old versions used a default parameter of "%.0f", please replace with e.g. "%d"
-#endif
-    }
-    return fmt;
-}
-
-bool ImGui::SliderScalar(const char* label, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
-    if (!ItemAdd(total_bb, id, &frame_bb))
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        return false;
-    }
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    // Tabbing or CTRL-clicking on Slider turns it into an input box
-    bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, id);
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if (tab_focus_requested || (hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        if (tab_focus_requested || g.IO.KeyCtrl || g.NavInputId == id)
-        {
-            start_text_input = true;
-            g.ScalarAsInputTextId = 0;
-        }
-    }
-    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
-        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
-
-    ItemSize(total_bb, style.FramePadding.y);
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
-
-    // Slider behavior
-    ImRect grab_bb;
-    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_None, &grab_bb);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Render grab
-    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.5f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalar(label, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
-}
-
-bool ImGui::VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(frame_bb, id))
-        return false;
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if ((hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || g.NavInputId == id)
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right);
-    }
-
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
-
-    // Slider behavior
-    ImRect grab_bb;
-    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_Vertical, &grab_bb);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Render grab
-    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    // For the vertical slider we allow centered text to overlap the frame padding
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.0f));
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::SliderAngle(const char* label, float* v_rad, float v_degrees_min, float v_degrees_max)
-{
-    float v_deg = (*v_rad) * 360.0f / (2*IM_PI);
-    bool value_changed = SliderFloat(label, &v_deg, v_degrees_min, v_degrees_max, "%.0f deg", 1.0f);
-    *v_rad = v_deg * (2*IM_PI) / 360.0f;
-    return value_changed;
-}
-
-bool ImGui::SliderInt(const char* label, int* v, int v_min, int v_max, const char* format)
-{
-    return SliderScalar(label, ImGuiDataType_S32, v, &v_min, &v_max, format);
-}
-
-bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* format, float power)
-{
-    return VSliderScalar(label, size, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
-}
-
-bool ImGui::VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format)
-{
-    return VSliderScalar(label, size, ImGuiDataType_S32, v, &v_min, &v_max, format);
-}
-
-// Add multiple sliders on 1 line for compact edition of multiple components
-bool ImGui::SliderScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= SliderScalar("##v", data_type, v, v_min, v_max, format, power);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 2, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 3, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 4, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 2, &v_min, &v_max, format);
-}
-
-bool ImGui::SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 3, &v_min, &v_max, format);
-}
-
-bool ImGui::SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 4, &v_min, &v_max, format);
-}
-
-// This is called by DragBehavior() when the widget is active (held by mouse or being manipulated with Nav controls)
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power)
-{
-    ImGuiContext& g = *GImGui;
-
-    // Default tweak speed
-    bool has_min_max = (v_min != v_max) && (v_max - v_max < FLT_MAX);
-    if (v_speed == 0.0f && has_min_max)
-        v_speed = (float)((v_max - v_min) * g.DragSpeedDefaultRatio);
-
-    // Inputs accumulates into g.DragCurrentAccum, which is flushed into the current value as soon as it makes a difference with our precision settings
-    float adjust_delta = 0.0f;
-    if (g.ActiveIdSource == ImGuiInputSource_Mouse && IsMousePosValid() && g.IO.MouseDragMaxDistanceSqr[0] > 1.0f*1.0f)
-    {
-        adjust_delta = g.IO.MouseDelta.x;
-        if (g.IO.KeyAlt)
-            adjust_delta *= 1.0f/100.0f;
-        if (g.IO.KeyShift)
-            adjust_delta *= 10.0f;
-    }
-    else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-    {
-        int decimal_precision = (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImParseFormatPrecision(format, 3) : 0;
-        adjust_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard|ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 1.0f/10.0f, 10.0f).x;
-        v_speed = ImMax(v_speed, GetMinimumStepAtDecimalPrecision(decimal_precision));
-    }
-    adjust_delta *= v_speed;
-
-    // Clear current value on activation
-    // Avoid altering values and clamping when we are _already_ past the limits and heading in the same direction, so e.g. if range is 0..255, current value is 300 and we are pushing to the right side, keep the 300.
-    bool is_just_activated = g.ActiveIdIsJustActivated;
-    bool is_already_past_limits_and_pushing_outward = has_min_max && ((*v >= v_max && adjust_delta > 0.0f) || (*v <= v_min && adjust_delta < 0.0f));
-    if (is_just_activated || is_already_past_limits_and_pushing_outward)
-    {
-        g.DragCurrentAccum = 0.0f;
-        g.DragCurrentAccumDirty = false;
-    }
-    else if (adjust_delta != 0.0f)
-    {
-        g.DragCurrentAccum += adjust_delta;
-        g.DragCurrentAccumDirty = true;
-    }
-
-    if (!g.DragCurrentAccumDirty)
-        return false;
-
-    TYPE v_cur = *v;
-    FLOATTYPE v_old_ref_for_accum_remainder = (FLOATTYPE)0.0f;
-
-    const bool is_power = (power != 1.0f && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) && has_min_max);
-    if (is_power)
-    {
-        // Offset + round to user desired precision, with a curve on the v_min..v_max range to get more precision on one side of the range
-        FLOATTYPE v_old_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
-        FLOATTYPE v_new_norm_curved = v_old_norm_curved + (g.DragCurrentAccum / (v_max - v_min));
-        v_cur = v_min + (TYPE)ImPow(ImSaturate((float)v_new_norm_curved), power) * (v_max - v_min);
-        v_old_ref_for_accum_remainder = v_old_norm_curved;
-    }
-    else
-    {
-        v_cur += (TYPE)g.DragCurrentAccum;
-    }
-
-    // Round to user desired precision based on format string
-    v_cur = RoundScalarWithFormat<TYPE, SIGNEDTYPE>(format, data_type, v_cur);
-
-    // Preserve remainder after rounding has been applied. This also allow slow tweaking of values.
-    g.DragCurrentAccumDirty = false;
-    if (is_power)
-    {
-        FLOATTYPE v_cur_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
-        g.DragCurrentAccum -= (float)(v_cur_norm_curved - v_old_ref_for_accum_remainder);
-    }
-    else
-    {
-        g.DragCurrentAccum -= (float)((SIGNEDTYPE)v_cur - (SIGNEDTYPE)*v);
-    }
-
-    // Lose zero sign for float/double
-    if (v_cur == (TYPE)-0)
-        v_cur = (TYPE)0;
-
-    // Clamp values (handle overflow/wrap-around)
-    if (*v != v_cur && has_min_max)
-    {
-        if (v_cur < v_min || (v_cur > *v && adjust_delta < 0.0f))
-            v_cur = v_min;
-        if (v_cur > v_max || (v_cur < *v && adjust_delta > 0.0f))
-            v_cur = v_max;
-    }
-
-    // Apply result
-    if (*v == v_cur)
-        return false;
-    *v = v_cur;
-    return true;
-}
-
-bool ImGui::DragBehavior(ImGuiID id, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.ActiveId == id)
-    {
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse && !g.IO.MouseDown[0])
-            ClearActiveID();
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav && g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
-            ClearActiveID();
-    }
-    if (g.ActiveId != id)
-        return false;
-
-    switch (data_type)
-    {
-    case ImGuiDataType_S32:    return DragBehaviorT<ImS32, ImS32, float >(data_type, (ImS32*)v,  v_speed, v_min ? *(const ImS32* )v_min : IM_S32_MIN, v_max ? *(const ImS32* )v_max : IM_S32_MAX, format, power);
-    case ImGuiDataType_U32:    return DragBehaviorT<ImU32, ImS32, float >(data_type, (ImU32*)v,  v_speed, v_min ? *(const ImU32* )v_min : IM_U32_MIN, v_max ? *(const ImU32* )v_max : IM_U32_MAX, format, power);
-    case ImGuiDataType_S64:    return DragBehaviorT<ImS64, ImS64, double>(data_type, (ImS64*)v,  v_speed, v_min ? *(const ImS64* )v_min : IM_S64_MIN, v_max ? *(const ImS64* )v_max : IM_S64_MAX, format, power);
-    case ImGuiDataType_U64:    return DragBehaviorT<ImU64, ImS64, double>(data_type, (ImU64*)v,  v_speed, v_min ? *(const ImU64* )v_min : IM_U64_MIN, v_max ? *(const ImU64* )v_max : IM_U64_MAX, format, power);
-    case ImGuiDataType_Float:  return DragBehaviorT<float, float, float >(data_type, (float*)v,  v_speed, v_min ? *(const float* )v_min : -FLT_MAX,   v_max ? *(const float* )v_max : FLT_MAX,    format, power);
-    case ImGuiDataType_Double: return DragBehaviorT<double,double,double>(data_type, (double*)v, v_speed, v_min ? *(const double*)v_min : -DBL_MAX,   v_max ? *(const double*)v_max : DBL_MAX,    format, power);
-    case ImGuiDataType_COUNT:  break;
-    }
-    IM_ASSERT(0);
-    return false;
-}
-
-bool ImGui::DragScalar(const char* label, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    if (power != 1.0f)
-        IM_ASSERT(v_min != NULL && v_max != NULL); // When using a power curve the drag needs to have known bounds
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
-    if (!ItemAdd(total_bb, id, &frame_bb))
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        return false;
-    }
-    const bool hovered = ItemHoverable(frame_bb, id);
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    // Tabbing or CTRL-clicking on Drag turns it into an input box
-    bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, id);
-    if (tab_focus_requested || (hovered && (g.IO.MouseClicked[0] || g.IO.MouseDoubleClicked[0])) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        if (tab_focus_requested || g.IO.KeyCtrl || g.IO.MouseDoubleClicked[0] || g.NavInputId == id)
-        {
-            start_text_input = true;
-            g.ScalarAsInputTextId = 0;
-        }
-    }
-    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
-        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
-
-    // Actual drag behavior
-    ItemSize(total_bb, style.FramePadding.y);
-    const bool value_changed = DragBehavior(id, data_type, v, v_speed, v_min, v_max, format, power);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, style.FrameRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f, 0.5f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::DragScalarN(const char* label, ImGuiDataType data_type, void* v, int components, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= DragScalar("##v", data_type, v, v_speed, v_min, v_max, format, power);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::DragFloat(const char* label, float* v, float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalar(label, ImGuiDataType_Float, v, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat2(const char* label, float v[2], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 2, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat3(const char* label, float v[3], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 3, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat4(const char* label, float v[4], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 4, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloatRange2(const char* label, float* v_current_min, float* v_current_max, float v_speed, float v_min, float v_max, const char* format, const char* format_max, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    PushID(label);
-    BeginGroup();
-    PushMultiItemsWidths(2);
-
-    bool value_changed = DragFloat("##min", v_current_min, v_speed, (v_min >= v_max) ? -FLT_MAX : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format, power);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-    value_changed |= DragFloat("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? FLT_MAX : v_max, format_max ? format_max : format, power);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    PopID();
-    return value_changed;
-}
-
-// NB: v_speed is float to allow adjusting the drag speed with more precision
-bool ImGui::DragInt(const char* label, int* v, float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalar(label, ImGuiDataType_S32, v, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt2(const char* label, int v[2], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 2, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt3(const char* label, int v[3], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 3, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt4(const char* label, int v[4], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 4, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragIntRange2(const char* label, int* v_current_min, int* v_current_max, float v_speed, int v_min, int v_max, const char* format, const char* format_max)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    PushID(label);
-    BeginGroup();
-    PushMultiItemsWidths(2);
-
-    bool value_changed = DragInt("##min", v_current_min, v_speed, (v_min >= v_max) ? INT_MIN : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-    value_changed |= DragInt("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? INT_MAX : v_max, format_max ? format_max : format);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    PopID();
-
-    return value_changed;
-}
-
-void ImGui::PlotEx(ImGuiPlotType plot_type, const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    if (graph_size.x == 0.0f)
-        graph_size.x = CalcItemWidth();
-    if (graph_size.y == 0.0f)
-        graph_size.y = label_size.y + (style.FramePadding.y * 2);
-
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(graph_size.x, graph_size.y));
-    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0));
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, 0, &frame_bb))
-        return;
-    const bool hovered = ItemHoverable(inner_bb, 0);
-
-    // Determine scale from values if not specified
-    if (scale_min == FLT_MAX || scale_max == FLT_MAX)
-    {
-        float v_min = FLT_MAX;
-        float v_max = -FLT_MAX;
-        for (int i = 0; i < values_count; i++)
-        {
-            const float v = values_getter(data, i);
-            v_min = ImMin(v_min, v);
-            v_max = ImMax(v_max, v);
-        }
-        if (scale_min == FLT_MAX)
-            scale_min = v_min;
-        if (scale_max == FLT_MAX)
-            scale_max = v_max;
-    }
-
-    RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-
-    if (values_count > 0)
-    {
-        int res_w = ImMin((int)graph_size.x, values_count) + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
-        int item_count = values_count + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
-
-        // Tooltip on hover
-        int v_hovered = -1;
-        if (hovered)
-        {
-            const float t = ImClamp((g.IO.MousePos.x - inner_bb.Min.x) / (inner_bb.Max.x - inner_bb.Min.x), 0.0f, 0.9999f);
-            const int v_idx = (int)(t * item_count);
-            IM_ASSERT(v_idx >= 0 && v_idx < values_count);
-
-            const float v0 = values_getter(data, (v_idx + values_offset) % values_count);
-            const float v1 = values_getter(data, (v_idx + 1 + values_offset) % values_count);
-            if (plot_type == ImGuiPlotType_Lines)
-                SetTooltip("%d: %8.4g\n%d: %8.4g", v_idx, v0, v_idx+1, v1);
-            else if (plot_type == ImGuiPlotType_Histogram)
-                SetTooltip("%d: %8.4g", v_idx, v0);
-            v_hovered = v_idx;
-        }
-
-        const float t_step = 1.0f / (float)res_w;
-        const float inv_scale = (scale_min == scale_max) ? 0.0f : (1.0f / (scale_max - scale_min));
-
-        float v0 = values_getter(data, (0 + values_offset) % values_count);
-        float t0 = 0.0f;
-        ImVec2 tp0 = ImVec2( t0, 1.0f - ImSaturate((v0 - scale_min) * inv_scale) );                       // Point in the normalized space of our target rectangle
-        float histogram_zero_line_t = (scale_min * scale_max < 0.0f) ? (-scale_min * inv_scale) : (scale_min < 0.0f ? 0.0f : 1.0f);   // Where does the zero line stands
-
-        const ImU32 col_base = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLines : ImGuiCol_PlotHistogram);
-        const ImU32 col_hovered = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLinesHovered : ImGuiCol_PlotHistogramHovered);
-
-        for (int n = 0; n < res_w; n++)
-        {
-            const float t1 = t0 + t_step;
-            const int v1_idx = (int)(t0 * item_count + 0.5f);
-            IM_ASSERT(v1_idx >= 0 && v1_idx < values_count);
-            const float v1 = values_getter(data, (v1_idx + values_offset + 1) % values_count);
-            const ImVec2 tp1 = ImVec2( t1, 1.0f - ImSaturate((v1 - scale_min) * inv_scale) );
-
-            // NB: Draw calls are merged together by the DrawList system. Still, we should render our batch are lower level to save a bit of CPU.
-            ImVec2 pos0 = ImLerp(inner_bb.Min, inner_bb.Max, tp0);
-            ImVec2 pos1 = ImLerp(inner_bb.Min, inner_bb.Max, (plot_type == ImGuiPlotType_Lines) ? tp1 : ImVec2(tp1.x, histogram_zero_line_t));
-            if (plot_type == ImGuiPlotType_Lines)
-            {
-                window->DrawList->AddLine(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
-            }
-            else if (plot_type == ImGuiPlotType_Histogram)
-            {
-                if (pos1.x >= pos0.x + 2.0f)
-                    pos1.x -= 1.0f;
-                window->DrawList->AddRectFilled(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
-            }
-
-            t0 = t1;
-            tp0 = tp1;
-        }
-    }
-
-    // Text overlay
-    if (overlay_text)
-        RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, overlay_text, NULL, NULL, ImVec2(0.5f,0.0f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
-}
-
-struct ImGuiPlotArrayGetterData
-{
-    const float* Values;
-    int Stride;
-
-    ImGuiPlotArrayGetterData(const float* values, int stride) { Values = values; Stride = stride; }
-};
-
-static float Plot_ArrayGetter(void* data, int idx)
-{
-    ImGuiPlotArrayGetterData* plot_data = (ImGuiPlotArrayGetterData*)data;
-    const float v = *(const float*)(const void*)((const unsigned char*)plot_data->Values + (size_t)idx * plot_data->Stride);
-    return v;
-}
-
-void ImGui::PlotLines(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
-{
-    ImGuiPlotArrayGetterData data(values, stride);
-    PlotEx(ImGuiPlotType_Lines, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotLines(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    PlotEx(ImGuiPlotType_Lines, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotHistogram(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
-{
-    ImGuiPlotArrayGetterData data(values, stride);
-    PlotEx(ImGuiPlotType_Histogram, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotHistogram(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    PlotEx(ImGuiPlotType_Histogram, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-// size_arg (for each axis) < 0.0f: align to end, 0.0f: auto, > 0.0f: specified size
-void ImGui::ProgressBar(float fraction, const ImVec2& size_arg, const char* overlay)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    ImVec2 pos = window->DC.CursorPos;
-    ImRect bb(pos, pos + CalcItemSize(size_arg, CalcItemWidth(), g.FontSize + style.FramePadding.y*2.0f));
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    // Render
-    fraction = ImSaturate(fraction);
-    RenderFrame(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-    bb.Expand(ImVec2(-style.FrameBorderSize, -style.FrameBorderSize));
-    const ImVec2 fill_br = ImVec2(ImLerp(bb.Min.x, bb.Max.x, fraction), bb.Max.y);
-    RenderRectFilledRangeH(window->DrawList, bb, GetColorU32(ImGuiCol_PlotHistogram), 0.0f, fraction, style.FrameRounding);
-
-    // Default displaying the fraction as percentage string, but user can override it
-    char overlay_buf[32];
-    if (!overlay)
-    {
-        ImFormatString(overlay_buf, IM_ARRAYSIZE(overlay_buf), "%.0f%%", fraction*100+0.01f);
-        overlay = overlay_buf;
-    }
-
-    ImVec2 overlay_size = CalcTextSize(overlay, NULL);
-    if (overlay_size.x > 0.0f)
-        RenderTextClipped(ImVec2(ImClamp(fill_br.x + style.ItemSpacing.x, bb.Min.x, bb.Max.x - overlay_size.x - style.ItemInnerSpacing.x), bb.Min.y), bb.Max, overlay, NULL, &overlay_size, ImVec2(0.0f,0.5f), &bb);
-}
-
-bool ImGui::Checkbox(const char* label, bool* v)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2, label_size.y + style.FramePadding.y*2)); // We want a square shape to we use Y twice
-    ItemSize(check_bb, style.FramePadding.y);
-
-    ImRect total_bb = check_bb;
-    if (label_size.x > 0)
-        SameLine(0, style.ItemInnerSpacing.x);
-    const ImRect text_bb(window->DC.CursorPos + ImVec2(0,style.FramePadding.y), window->DC.CursorPos + ImVec2(0,style.FramePadding.y) + label_size);
-    if (label_size.x > 0)
-    {
-        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
-        total_bb = ImRect(ImMin(check_bb.Min, text_bb.Min), ImMax(check_bb.Max, text_bb.Max));
-    }
-
-    if (!ItemAdd(total_bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
-    if (pressed)
-    {
-        *v = !(*v);
-        MarkItemEdited(id);
-    }
-
-    RenderNavHighlight(total_bb, id);
-    RenderFrame(check_bb.Min, check_bb.Max, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), true, style.FrameRounding);
-    if (*v)
-    {
-        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
-        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
-        RenderCheckMark(check_bb.Min + ImVec2(pad,pad), GetColorU32(ImGuiCol_CheckMark), check_bb.GetWidth() - pad*2.0f);
-    }
-
-    if (g.LogEnabled)
-        LogRenderedText(&text_bb.Min, *v ? "[x]" : "[ ]");
-    if (label_size.x > 0.0f)
-        RenderText(text_bb.Min, label);
-
-    return pressed;
-}
-
-bool ImGui::CheckboxFlags(const char* label, unsigned int* flags, unsigned int flags_value)
-{
-    bool v = ((*flags & flags_value) == flags_value);
-    bool pressed = Checkbox(label, &v);
-    if (pressed)
-    {
-        if (v)
-            *flags |= flags_value;
-        else
-            *flags &= ~flags_value;
-    }
-
-    return pressed;
-}
-
-bool ImGui::RadioButton(const char* label, bool active)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2-1, label_size.y + style.FramePadding.y*2-1));
-    ItemSize(check_bb, style.FramePadding.y);
-
-    ImRect total_bb = check_bb;
-    if (label_size.x > 0)
-        SameLine(0, style.ItemInnerSpacing.x);
-    const ImRect text_bb(window->DC.CursorPos + ImVec2(0, style.FramePadding.y), window->DC.CursorPos + ImVec2(0, style.FramePadding.y) + label_size);
-    if (label_size.x > 0)
-    {
-        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
-        total_bb.Add(text_bb);
-    }
-
-    if (!ItemAdd(total_bb, id))
-        return false;
-
-    ImVec2 center = check_bb.GetCenter();
-    center.x = (float)(int)center.x + 0.5f;
-    center.y = (float)(int)center.y + 0.5f;
-    const float radius = check_bb.GetHeight() * 0.5f;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
-    if (pressed)
-        MarkItemEdited(id);
-
-    RenderNavHighlight(total_bb, id);
-    window->DrawList->AddCircleFilled(center, radius, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), 16);
-    if (active)
-    {
-        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
-        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
-        window->DrawList->AddCircleFilled(center, radius-pad, GetColorU32(ImGuiCol_CheckMark), 16);
-    }
-
-    if (style.FrameBorderSize > 0.0f)
-    {
-        window->DrawList->AddCircle(center+ImVec2(1,1), radius, GetColorU32(ImGuiCol_BorderShadow), 16, style.FrameBorderSize);
-        window->DrawList->AddCircle(center, radius, GetColorU32(ImGuiCol_Border), 16, style.FrameBorderSize);
-    }
-
-    if (g.LogEnabled)
-        LogRenderedText(&text_bb.Min, active ? "(x)" : "( )");
-    if (label_size.x > 0.0f)
-        RenderText(text_bb.Min, label);
-
-    return pressed;
-}
-
-bool ImGui::RadioButton(const char* label, int* v, int v_button)
-{
-    const bool pressed = RadioButton(label, *v == v_button);
-    if (pressed)
-        *v = v_button;
-    return pressed;
-}
-
-static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end)
-{
-    int line_count = 0;
-    const char* s = text_begin;
-    while (char c = *s++) // We are only matching for \n so we can ignore UTF-8 decoding
-        if (c == '\n')
-            line_count++;
-    s--;
-    if (s[0] != '\n' && s[0] != '\r')
-        line_count++;
-    *out_text_end = s;
-    return line_count;
-}
-
-static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining, ImVec2* out_offset, bool stop_on_new_line)
-{
-    ImFont* font = GImGui->Font;
-    const float line_height = GImGui->FontSize;
-    const float scale = line_height / font->FontSize;
-
-    ImVec2 text_size = ImVec2(0,0);
-    float line_width = 0.0f;
-
-    const ImWchar* s = text_begin;
-    while (s < text_end)
-    {
-        unsigned int c = (unsigned int)(*s++);
-        if (c == '\n')
-        {
-            text_size.x = ImMax(text_size.x, line_width);
-            text_size.y += line_height;
-            line_width = 0.0f;
-            if (stop_on_new_line)
-                break;
-            continue;
-        }
-        if (c == '\r')
-            continue;
-
-        const float char_width = font->GetCharAdvance((unsigned short)c) * scale;
-        line_width += char_width;
-    }
-
-    if (text_size.x < line_width)
-        text_size.x = line_width;
-
-    if (out_offset)
-        *out_offset = ImVec2(line_width, text_size.y + line_height);  // offset allow for the possibility of sitting after a trailing \n
-
-    if (line_width > 0 || text_size.y == 0.0f)                        // whereas size.y will ignore the trailing \n
-        text_size.y += line_height;
-
-    if (remaining)
-        *remaining = s;
-
-    return text_size;
-}
-
-// Wrapper for stb_textedit.h to edit text (our wrapper is for: statically sized buffer, single-line, wchar characters. InputText converts between UTF-8 and wchar)
-namespace ImGuiStb
-{
-
-static int     STB_TEXTEDIT_STRINGLEN(const STB_TEXTEDIT_STRING* obj)                             { return obj->CurLenW; }
-static ImWchar STB_TEXTEDIT_GETCHAR(const STB_TEXTEDIT_STRING* obj, int idx)                      { return obj->TextW[idx]; }
-static float   STB_TEXTEDIT_GETWIDTH(STB_TEXTEDIT_STRING* obj, int line_start_idx, int char_idx)  { ImWchar c = obj->TextW[line_start_idx+char_idx]; if (c == '\n') return STB_TEXTEDIT_GETWIDTH_NEWLINE; return GImGui->Font->GetCharAdvance(c) * (GImGui->FontSize / GImGui->Font->FontSize); }
-static int     STB_TEXTEDIT_KEYTOTEXT(int key)                                                    { return key >= 0x10000 ? 0 : key; }
-static ImWchar STB_TEXTEDIT_NEWLINE = '\n';
-static void    STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, STB_TEXTEDIT_STRING* obj, int line_start_idx)
-{
-    const ImWchar* text = obj->TextW.Data;
-    const ImWchar* text_remaining = NULL;
-    const ImVec2 size = InputTextCalcTextSizeW(text + line_start_idx, text + obj->CurLenW, &text_remaining, NULL, true);
-    r->x0 = 0.0f;
-    r->x1 = size.x;
-    r->baseline_y_delta = size.y;
-    r->ymin = 0.0f;
-    r->ymax = size.y;
-    r->num_chars = (int)(text_remaining - (text + line_start_idx));
-}
-
-static bool is_separator(unsigned int c)                                        { return ImCharIsBlankW(c) || c==',' || c==';' || c=='(' || c==')' || c=='{' || c=='}' || c=='[' || c==']' || c=='|'; }
-static int  is_word_boundary_from_right(STB_TEXTEDIT_STRING* obj, int idx)      { return idx > 0 ? (is_separator( obj->TextW[idx-1] ) && !is_separator( obj->TextW[idx] ) ) : 1; }
-static int  STB_TEXTEDIT_MOVEWORDLEFT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)   { idx--; while (idx >= 0 && !is_word_boundary_from_right(obj, idx)) idx--; return idx < 0 ? 0 : idx; }
-#ifdef __APPLE__    // FIXME: Move setting to IO structure
-static int  is_word_boundary_from_left(STB_TEXTEDIT_STRING* obj, int idx)       { return idx > 0 ? (!is_separator( obj->TextW[idx-1] ) && is_separator( obj->TextW[idx] ) ) : 1; }
-static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_left(obj, idx)) idx++; return idx > len ? len : idx; }
-#else
-static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_right(obj, idx)) idx++; return idx > len ? len : idx; }
-#endif
-#define STB_TEXTEDIT_MOVEWORDLEFT   STB_TEXTEDIT_MOVEWORDLEFT_IMPL    // They need to be #define for stb_textedit.h
-#define STB_TEXTEDIT_MOVEWORDRIGHT  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL
-
-static void STB_TEXTEDIT_DELETECHARS(STB_TEXTEDIT_STRING* obj, int pos, int n)
-{
-    ImWchar* dst = obj->TextW.Data + pos;
-
-    // We maintain our buffer length in both UTF-8 and wchar formats
-    obj->CurLenA -= ImTextCountUtf8BytesFromStr(dst, dst + n);
-    obj->CurLenW -= n;
-
-    // Offset remaining text
-    const ImWchar* src = obj->TextW.Data + pos + n;
-    while (ImWchar c = *src++)
-        *dst++ = c;
-    *dst = '\0';
-}
-
-static bool STB_TEXTEDIT_INSERTCHARS(STB_TEXTEDIT_STRING* obj, int pos, const ImWchar* new_text, int new_text_len)
-{
-    const bool is_resizable = (obj->UserFlags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int text_len = obj->CurLenW;
-    IM_ASSERT(pos <= text_len);
-
-    const int new_text_len_utf8 = ImTextCountUtf8BytesFromStr(new_text, new_text + new_text_len);
-    if (!is_resizable && (new_text_len_utf8 + obj->CurLenA + 1 > obj->BufCapacityA))
-        return false;
-
-    // Grow internal buffer if needed
-    if (new_text_len + text_len + 1 > obj->TextW.Size)
-    {
-        if (!is_resizable)
-            return false;
-        IM_ASSERT(text_len < obj->TextW.Size);
-        obj->TextW.resize(text_len + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1);
-    }
-
-    ImWchar* text = obj->TextW.Data;
-    if (pos != text_len)
-        memmove(text + pos + new_text_len, text + pos, (size_t)(text_len - pos) * sizeof(ImWchar));
-    memcpy(text + pos, new_text, (size_t)new_text_len * sizeof(ImWchar));
-
-    obj->CurLenW += new_text_len;
-    obj->CurLenA += new_text_len_utf8;
-    obj->TextW[obj->CurLenW] = '\0';
-
-    return true;
-}
-
-// We don't use an enum so we can build even with conflicting symbols (if another user of stb_textedit.h leak their STB_TEXTEDIT_K_* symbols)
-#define STB_TEXTEDIT_K_LEFT         0x10000 // keyboard input to move cursor left
-#define STB_TEXTEDIT_K_RIGHT        0x10001 // keyboard input to move cursor right
-#define STB_TEXTEDIT_K_UP           0x10002 // keyboard input to move cursor up
-#define STB_TEXTEDIT_K_DOWN         0x10003 // keyboard input to move cursor down
-#define STB_TEXTEDIT_K_LINESTART    0x10004 // keyboard input to move cursor to start of line
-#define STB_TEXTEDIT_K_LINEEND      0x10005 // keyboard input to move cursor to end of line
-#define STB_TEXTEDIT_K_TEXTSTART    0x10006 // keyboard input to move cursor to start of text
-#define STB_TEXTEDIT_K_TEXTEND      0x10007 // keyboard input to move cursor to end of text
-#define STB_TEXTEDIT_K_DELETE       0x10008 // keyboard input to delete selection or character under cursor
-#define STB_TEXTEDIT_K_BACKSPACE    0x10009 // keyboard input to delete selection or character left of cursor
-#define STB_TEXTEDIT_K_UNDO         0x1000A // keyboard input to perform undo
-#define STB_TEXTEDIT_K_REDO         0x1000B // keyboard input to perform redo
-#define STB_TEXTEDIT_K_WORDLEFT     0x1000C // keyboard input to move cursor left one word
-#define STB_TEXTEDIT_K_WORDRIGHT    0x1000D // keyboard input to move cursor right one word
-#define STB_TEXTEDIT_K_SHIFT        0x20000
-
-#define STB_TEXTEDIT_IMPLEMENTATION
-#include "stb_textedit.h"
-
-}
-
-void ImGuiInputTextState::OnKeyPressed(int key)
-{
-    stb_textedit_key(this, &StbState, key);
-    CursorFollow = true;
-    CursorAnimReset();
-}
-
-ImGuiInputTextCallbackData::ImGuiInputTextCallbackData()
-{
-    memset(this, 0, sizeof(*this));
-}
-
-// Public API to manipulate UTF-8 text
-// We expose UTF-8 to the user (unlike the STB_TEXTEDIT_* functions which are manipulating wchar)
-// FIXME: The existence of this rarely exercised code path is a bit of a nuisance.
-void ImGuiInputTextCallbackData::DeleteChars(int pos, int bytes_count)
-{
-    IM_ASSERT(pos + bytes_count <= BufTextLen);
-    char* dst = Buf + pos;
-    const char* src = Buf + pos + bytes_count;
-    while (char c = *src++)
-        *dst++ = c;
-    *dst = '\0';
-
-    if (CursorPos + bytes_count >= pos)
-        CursorPos -= bytes_count;
-    else if (CursorPos >= pos)
-        CursorPos = pos;
-    SelectionStart = SelectionEnd = CursorPos;
-    BufDirty = true;
-    BufTextLen -= bytes_count;
-}
-
-void ImGuiInputTextCallbackData::InsertChars(int pos, const char* new_text, const char* new_text_end)
-{
-    const bool is_resizable = (Flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int new_text_len = new_text_end ? (int)(new_text_end - new_text) : (int)strlen(new_text);
-    if (new_text_len + BufTextLen >= BufSize)
-    {
-        if (!is_resizable)
-            return;
-
-        // Contrary to STB_TEXTEDIT_INSERTCHARS() this is working in the UTF8 buffer, hence the midly similar code (until we remove the U16 buffer alltogether!)
-        ImGuiContext& g = *GImGui;
-        ImGuiInputTextState* edit_state = &g.InputTextState;
-        IM_ASSERT(edit_state->ID != 0 && g.ActiveId == edit_state->ID);
-        IM_ASSERT(Buf == edit_state->TempBuffer.Data);
-        int new_buf_size = BufTextLen + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1;
-        edit_state->TempBuffer.reserve(new_buf_size + 1);
-        Buf = edit_state->TempBuffer.Data;
-        BufSize = edit_state->BufCapacityA = new_buf_size;
-    }
-
-    if (BufTextLen != pos)
-        memmove(Buf + pos + new_text_len, Buf + pos, (size_t)(BufTextLen - pos));
-    memcpy(Buf + pos, new_text, (size_t)new_text_len * sizeof(char));
-    Buf[BufTextLen + new_text_len] = '\0';
-
-    if (CursorPos >= pos)
-        CursorPos += new_text_len;
-    SelectionStart = SelectionEnd = CursorPos;
-    BufDirty = true;
-    BufTextLen += new_text_len;
-}
-
-// Return false to discard a character.
-static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    unsigned int c = *p_char;
-
-    if (c < 128 && c != ' ' && !isprint((int)(c & 0xFF)))
-    {
-        bool pass = false;
-        pass |= (c == '\n' && (flags & ImGuiInputTextFlags_Multiline));
-        pass |= (c == '\t' && (flags & ImGuiInputTextFlags_AllowTabInput));
-        if (!pass)
-            return false;
-    }
-
-    if (c >= 0xE000 && c <= 0xF8FF) // Filter private Unicode range. I don't imagine anybody would want to input them. GLFW on OSX seems to send private characters for special keys like arrow keys.
-        return false;
-
-    if (flags & (ImGuiInputTextFlags_CharsDecimal | ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase | ImGuiInputTextFlags_CharsNoBlank | ImGuiInputTextFlags_CharsScientific))
-    {
-        if (flags & ImGuiInputTextFlags_CharsDecimal)
-            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsScientific)
-            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/') && (c != 'e') && (c != 'E'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsHexadecimal)
-            if (!(c >= '0' && c <= '9') && !(c >= 'a' && c <= 'f') && !(c >= 'A' && c <= 'F'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsUppercase)
-            if (c >= 'a' && c <= 'z')
-                *p_char = (c += (unsigned int)('A'-'a'));
-
-        if (flags & ImGuiInputTextFlags_CharsNoBlank)
-            if (ImCharIsBlankW(c))
-                return false;
-    }
-
-    if (flags & ImGuiInputTextFlags_CallbackCharFilter)
-    {
-        ImGuiInputTextCallbackData callback_data;
-        memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
-        callback_data.EventFlag = ImGuiInputTextFlags_CallbackCharFilter;
-        callback_data.EventChar = (ImWchar)c;
-        callback_data.Flags = flags;
-        callback_data.UserData = user_data;
-        if (callback(&callback_data) != 0)
-            return false;
-        *p_char = callback_data.EventChar;
-        if (!callback_data.EventChar)
-            return false;
-    }
-
-    return true;
-}
-
-// Edit a string of text
-// - buf_size account for the zero-terminator, so a buf_size of 6 can hold "Hello" but not "Hello!".
-//   This is so we can easily call InputText() on static arrays using ARRAYSIZE() and to match 
-//   Note that in std::string world, capacity() would omit 1 byte used by the zero-terminator.
-// - When active, hold on a privately held copy of the text (and apply back to 'buf'). So changing 'buf' while the InputText is active has no effect.
-// - If you want to use ImGui::InputText() with std::string, see misc/stl/imgui_stl.h
-// (FIXME: Rather messy function partly because we are doing UTF8 > u16 > UTF8 conversions on the go to more easily handle stb_textedit calls. Ideally we should stay in UTF-8 all the time. See https://github.com/nothings/stb/issues/188)
-bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2& size_arg, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* callback_user_data)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackHistory) && (flags & ImGuiInputTextFlags_Multiline)));        // Can't use both together (they both use up/down keys)
-    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackCompletion) && (flags & ImGuiInputTextFlags_AllowTabInput))); // Can't use both together (they both use tab key)
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiIO& io = g.IO;
-    const ImGuiStyle& style = g.Style;
-
-    const bool is_multiline = (flags & ImGuiInputTextFlags_Multiline) != 0;
-    const bool is_editable = (flags & ImGuiInputTextFlags_ReadOnly) == 0;
-    const bool is_password = (flags & ImGuiInputTextFlags_Password) != 0;
-    const bool is_undoable = (flags & ImGuiInputTextFlags_NoUndoRedo) == 0;
-    const bool is_resizable = (flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    if (is_resizable)
-        IM_ASSERT(callback != NULL); // Must provide a callback if you set the ImGuiInputTextFlags_CallbackResize flag!
-
-    if (is_multiline) // Open group before calling GetID() because groups tracks id created within their scope, 
-        BeginGroup();
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), (is_multiline ? GetTextLineHeight() * 8.0f : label_size.y) + style.FramePadding.y*2.0f); // Arbitrary default of 8 lines high for multi-line
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? (style.ItemInnerSpacing.x + label_size.x) : 0.0f, 0.0f));
-
-    ImGuiWindow* draw_window = window;
-    if (is_multiline)
-    {
-        ItemAdd(total_bb, id, &frame_bb);
-        if (!BeginChildFrame(id, frame_bb.GetSize()))
-        {
-            EndChildFrame();
-            EndGroup();
-            return false;
-        }
-        draw_window = GetCurrentWindow();
-        draw_window->DC.NavLayerActiveMaskNext |= draw_window->DC.NavLayerCurrentMask; // This is to ensure that EndChild() will display a navigation highlight
-        size.x -= draw_window->ScrollbarSizes.x;
-    }
-    else
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        if (!ItemAdd(total_bb, id, &frame_bb))
-            return false;
-    }
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if (hovered)
-        g.MouseCursor = ImGuiMouseCursor_TextInput;
-
-    // Password pushes a temporary font with only a fallback glyph
-    if (is_password)
-    {
-        const ImFontGlyph* glyph = g.Font->FindGlyph('*');
-        ImFont* password_font = &g.InputTextPasswordFont;
-        password_font->FontSize = g.Font->FontSize;
-        password_font->Scale = g.Font->Scale;
-        password_font->DisplayOffset = g.Font->DisplayOffset;
-        password_font->Ascent = g.Font->Ascent;
-        password_font->Descent = g.Font->Descent;
-        password_font->ContainerAtlas = g.Font->ContainerAtlas;
-        password_font->FallbackGlyph = glyph;
-        password_font->FallbackAdvanceX = glyph->AdvanceX;
-        IM_ASSERT(password_font->Glyphs.empty() && password_font->IndexAdvanceX.empty() && password_font->IndexLookup.empty());
-        PushFont(password_font);
-    }
-
-    // NB: we are only allowed to access 'edit_state' if we are the active widget.
-    ImGuiInputTextState& edit_state = g.InputTextState;
-
-    const bool focus_requested = FocusableItemRegister(window, id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0);    // Using completion callback disable keyboard tabbing
-    const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent);
-    const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code;
-
-    const bool user_clicked = hovered && io.MouseClicked[0];
-    const bool user_scrolled = is_multiline && g.ActiveId == 0 && edit_state.ID == id && g.ActiveIdPreviousFrame == draw_window->GetIDNoKeepAlive("#SCROLLY");
-    const bool user_nav_input_start = (g.ActiveId != id) && ((g.NavInputId == id) || (g.NavActivateId == id && g.NavInputSource == ImGuiInputSource_NavKeyboard));
-
-    bool clear_active_id = false;
-
-    bool select_all = (g.ActiveId != id) && ((flags & ImGuiInputTextFlags_AutoSelectAll) != 0 || user_nav_input_start) && (!is_multiline);
-    if (focus_requested || user_clicked || user_scrolled || user_nav_input_start)
-    {
-        if (g.ActiveId != id)
-        {
-            // Start edition
-            // Take a copy of the initial buffer value (both in original UTF-8 format and converted to wchar)
-            // From the moment we focused we are ignoring the content of 'buf' (unless we are in read-only mode)
-            const int prev_len_w = edit_state.CurLenW;
-            const int init_buf_len = (int)strlen(buf);
-            edit_state.TextW.resize(buf_size+1);             // wchar count <= UTF-8 count. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
-            edit_state.InitialText.resize(init_buf_len + 1); // UTF-8. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
-            memcpy(edit_state.InitialText.Data, buf, init_buf_len + 1);
-            const char* buf_end = NULL;
-            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, buf_size, buf, NULL, &buf_end);
-            edit_state.CurLenA = (int)(buf_end - buf); // We can't get the result from ImStrncpy() above because it is not UTF-8 aware. Here we'll cut off malformed UTF-8.
-            edit_state.CursorAnimReset();
-
-            // Preserve cursor position and undo/redo stack if we come back to same widget
-            // FIXME: We should probably compare the whole buffer to be on the safety side. Comparing buf (utf8) and edit_state.Text (wchar).
-            const bool recycle_state = (edit_state.ID == id) && (prev_len_w == edit_state.CurLenW);
-            if (recycle_state)
-            {
-                // Recycle existing cursor/selection/undo stack but clamp position
-                // Note a single mouse click will override the cursor/position immediately by calling stb_textedit_click handler.
-                edit_state.CursorClamp();
-            }
-            else
-            {
-                edit_state.ID = id;
-                edit_state.ScrollX = 0.0f;
-                stb_textedit_initialize_state(&edit_state.StbState, !is_multiline);
-                if (!is_multiline && focus_requested_by_code)
-                    select_all = true;
-            }
-            if (flags & ImGuiInputTextFlags_AlwaysInsertMode)
-                edit_state.StbState.insert_mode = true;
-            if (!is_multiline && (focus_requested_by_tab || (user_clicked && io.KeyCtrl)))
-                select_all = true;
-        }
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        if (!is_multiline && !(flags & ImGuiInputTextFlags_CallbackHistory))
-            g.ActiveIdAllowNavDirFlags |= ((1 << ImGuiDir_Up) | (1 << ImGuiDir_Down));
-    }
-    else if (io.MouseClicked[0])
-    {
-        // Release focus when we click outside
-        clear_active_id = true;
-    }
-
-    bool value_changed = false;
-    bool enter_pressed = false;
-    int backup_current_text_length = 0;
-
-    if (g.ActiveId == id)
-    {
-        if (!is_editable && !g.ActiveIdIsJustActivated)
-        {
-            // When read-only we always use the live data passed to the function
-            edit_state.TextW.resize(buf_size+1);
-            const char* buf_end = NULL;
-            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, buf, NULL, &buf_end);
-            edit_state.CurLenA = (int)(buf_end - buf);
-            edit_state.CursorClamp();
-        }
-
-        backup_current_text_length = edit_state.CurLenA;
-        edit_state.BufCapacityA = buf_size;
-        edit_state.UserFlags = flags;
-        edit_state.UserCallback = callback;
-        edit_state.UserCallbackData = callback_user_data;
-
-        // Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.
-        // Down the line we should have a cleaner library-wide concept of Selected vs Active.
-        g.ActiveIdAllowOverlap = !io.MouseDown[0];
-        g.WantTextInputNextFrame = 1;
-
-        // Edit in progress
-        const float mouse_x = (io.MousePos.x - frame_bb.Min.x - style.FramePadding.x) + edit_state.ScrollX;
-        const float mouse_y = (is_multiline ? (io.MousePos.y - draw_window->DC.CursorPos.y - style.FramePadding.y) : (g.FontSize*0.5f));
-
-        const bool is_osx = io.ConfigMacOSXBehaviors;
-        if (select_all || (hovered && !is_osx && io.MouseDoubleClicked[0]))
-        {
-            edit_state.SelectAll();
-            edit_state.SelectedAllMouseLock = true;
-        }
-        else if (hovered && is_osx && io.MouseDoubleClicked[0])
-        {
-            // Double-click select a word only, OS X style (by simulating keystrokes)
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT);
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDRIGHT | STB_TEXTEDIT_K_SHIFT);
-        }
-        else if (io.MouseClicked[0] && !edit_state.SelectedAllMouseLock)
-        {
-            if (hovered)
-            {
-                stb_textedit_click(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
-                edit_state.CursorAnimReset();
-            }
-        }
-        else if (io.MouseDown[0] && !edit_state.SelectedAllMouseLock && (io.MouseDelta.x != 0.0f || io.MouseDelta.y != 0.0f))
-        {
-            stb_textedit_drag(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
-            edit_state.CursorAnimReset();
-            edit_state.CursorFollow = true;
-        }
-        if (edit_state.SelectedAllMouseLock && !io.MouseDown[0])
-            edit_state.SelectedAllMouseLock = false;
-
-        if (io.InputCharacters[0])
-        {
-            // Process text input (before we check for Return because using some IME will effectively send a Return?)
-            // We ignore CTRL inputs, but need to allow ALT+CTRL as some keyboards (e.g. German) use AltGR (which _is_ Alt+Ctrl) to input certain characters.
-            bool ignore_inputs = (io.KeyCtrl && !io.KeyAlt) || (is_osx && io.KeySuper);
-            if (!ignore_inputs && is_editable && !user_nav_input_start)
-                for (int n = 0; n < IM_ARRAYSIZE(io.InputCharacters) && io.InputCharacters[n]; n++)
-                {
-                    // Insert character if they pass filtering
-                    unsigned int c = (unsigned int)io.InputCharacters[n];
-                    if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                        edit_state.OnKeyPressed((int)c);
-                }
-
-            // Consume characters
-            memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters));
-        }
-    }
-
-    bool cancel_edit = false;
-    if (g.ActiveId == id && !g.ActiveIdIsJustActivated && !clear_active_id)
-    {
-        // Handle key-presses
-        const int k_mask = (io.KeyShift ? STB_TEXTEDIT_K_SHIFT : 0);
-        const bool is_osx = io.ConfigMacOSXBehaviors;
-        const bool is_shortcut_key = (is_osx ? (io.KeySuper && !io.KeyCtrl) : (io.KeyCtrl && !io.KeySuper)) && !io.KeyAlt && !io.KeyShift; // OS X style: Shortcuts using Cmd/Super instead of Ctrl
-        const bool is_osx_shift_shortcut = is_osx && io.KeySuper && io.KeyShift && !io.KeyCtrl && !io.KeyAlt;
-        const bool is_wordmove_key_down = is_osx ? io.KeyAlt : io.KeyCtrl;                     // OS X style: Text editing cursor movement using Alt instead of Ctrl
-        const bool is_startend_key_down = is_osx && io.KeySuper && !io.KeyCtrl && !io.KeyAlt;  // OS X style: Line/Text Start and End using Cmd+Arrows instead of Home/End
-        const bool is_ctrl_key_only = io.KeyCtrl && !io.KeyShift && !io.KeyAlt && !io.KeySuper;
-        const bool is_shift_key_only = io.KeyShift && !io.KeyCtrl && !io.KeyAlt && !io.KeySuper;
-
-        const bool is_cut   = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_X)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Delete))) && is_editable && !is_password && (!is_multiline || edit_state.HasSelection());
-        const bool is_copy  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_C)) || (is_ctrl_key_only  && IsKeyPressedMap(ImGuiKey_Insert))) && !is_password && (!is_multiline || edit_state.HasSelection());
-        const bool is_paste = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_V)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Insert))) && is_editable;
-        const bool is_undo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Z)) && is_editable && is_undoable);
-        const bool is_redo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Y)) || (is_osx_shift_shortcut && IsKeyPressedMap(ImGuiKey_Z))) && is_editable && is_undoable;
-
-        if (IsKeyPressedMap(ImGuiKey_LeftArrow))                        { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINESTART : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDLEFT : STB_TEXTEDIT_K_LEFT) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_RightArrow))                  { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINEEND : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDRIGHT : STB_TEXTEDIT_K_RIGHT) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_UpArrow) && is_multiline)     { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMax(draw_window->Scroll.y - g.FontSize, 0.0f)); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTSTART : STB_TEXTEDIT_K_UP) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_DownArrow) && is_multiline)   { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMin(draw_window->Scroll.y + g.FontSize, GetScrollMaxY())); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTEND : STB_TEXTEDIT_K_DOWN) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Home))                        { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_End))                         { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Delete) && is_editable)       { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Backspace) && is_editable)
-        {
-            if (!edit_state.HasSelection())
-            {
-                if (is_wordmove_key_down) edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT|STB_TEXTEDIT_K_SHIFT);
-                else if (is_osx && io.KeySuper && !io.KeyAlt && !io.KeyCtrl) edit_state.OnKeyPressed(STB_TEXTEDIT_K_LINESTART|STB_TEXTEDIT_K_SHIFT);
-            }
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_BACKSPACE | k_mask);
-        }
-        else if (IsKeyPressedMap(ImGuiKey_Enter))
-        {
-            bool ctrl_enter_for_new_line = (flags & ImGuiInputTextFlags_CtrlEnterForNewLine) != 0;
-            if (!is_multiline || (ctrl_enter_for_new_line && !io.KeyCtrl) || (!ctrl_enter_for_new_line && io.KeyCtrl))
-            {
-                enter_pressed = clear_active_id = true;
-            }
-            else if (is_editable)
-            {
-                unsigned int c = '\n'; // Insert new line
-                if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                    edit_state.OnKeyPressed((int)c);
-            }
-        }
-        else if ((flags & ImGuiInputTextFlags_AllowTabInput) && IsKeyPressedMap(ImGuiKey_Tab) && !io.KeyCtrl && !io.KeyShift && !io.KeyAlt && is_editable)
-        {
-            unsigned int c = '\t'; // Insert TAB
-            if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                edit_state.OnKeyPressed((int)c);
-        }
-        else if (IsKeyPressedMap(ImGuiKey_Escape))
-        {
-            clear_active_id = cancel_edit = true;
-        }
-        else if (is_undo || is_redo)
-        {
-            edit_state.OnKeyPressed(is_undo ? STB_TEXTEDIT_K_UNDO : STB_TEXTEDIT_K_REDO);
-            edit_state.ClearSelection();
-        }
-        else if (is_shortcut_key && IsKeyPressedMap(ImGuiKey_A))
-        {
-            edit_state.SelectAll();
-            edit_state.CursorFollow = true;
-        }
-        else if (is_cut || is_copy)
-        {
-            // Cut, Copy
-            if (io.SetClipboardTextFn)
-            {
-                const int ib = edit_state.HasSelection() ? ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end) : 0;
-                const int ie = edit_state.HasSelection() ? ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end) : edit_state.CurLenW;
-                edit_state.TempBuffer.resize((ie-ib) * 4 + 1);
-                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data+ib, edit_state.TextW.Data+ie);
-                SetClipboardText(edit_state.TempBuffer.Data);
-            }
-            if (is_cut)
-            {
-                if (!edit_state.HasSelection())
-                    edit_state.SelectAll();
-                edit_state.CursorFollow = true;
-                stb_textedit_cut(&edit_state, &edit_state.StbState);
-            }
-        }
-        else if (is_paste)
-        {
-            if (const char* clipboard = GetClipboardText())
-            {
-                // Filter pasted buffer
-                const int clipboard_len = (int)strlen(clipboard);
-                ImWchar* clipboard_filtered = (ImWchar*)ImGui::MemAlloc((clipboard_len+1) * sizeof(ImWchar));
-                int clipboard_filtered_len = 0;
-                for (const char* s = clipboard; *s; )
-                {
-                    unsigned int c;
-                    s += ImTextCharFromUtf8(&c, s, NULL);
-                    if (c == 0)
-                        break;
-                    if (c >= 0x10000 || !InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                        continue;
-                    clipboard_filtered[clipboard_filtered_len++] = (ImWchar)c;
-                }
-                clipboard_filtered[clipboard_filtered_len] = 0;
-                if (clipboard_filtered_len > 0) // If everything was filtered, ignore the pasting operation
-                {
-                    stb_textedit_paste(&edit_state, &edit_state.StbState, clipboard_filtered, clipboard_filtered_len);
-                    edit_state.CursorFollow = true;
-                }
-                ImGui::MemFree(clipboard_filtered);
-            }
-        }
-    }
-
-    if (g.ActiveId == id)
-    {
-        const char* apply_new_text = NULL;
-        int apply_new_text_length = 0;
-        if (cancel_edit)
-        {
-            // Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
-            if (is_editable && strcmp(buf, edit_state.InitialText.Data) != 0)
-            {
-                apply_new_text = edit_state.InitialText.Data;
-                apply_new_text_length = edit_state.InitialText.Size - 1;
-            }
-        }
-
-        // When using 'ImGuiInputTextFlags_EnterReturnsTrue' as a special case we reapply the live buffer back to the input buffer before clearing ActiveId, even though strictly speaking it wasn't modified on this frame.
-        // If we didn't do that, code like InputInt() with ImGuiInputTextFlags_EnterReturnsTrue would fail. Also this allows the user to use InputText() with ImGuiInputTextFlags_EnterReturnsTrue without maintaining any user-side storage.
-        bool apply_edit_back_to_user_buffer = !cancel_edit || (enter_pressed && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
-        if (apply_edit_back_to_user_buffer)
-        {
-            // Apply new value immediately - copy modified buffer back
-            // Note that as soon as the input box is active, the in-widget value gets priority over any underlying modification of the input buffer
-            // FIXME: We actually always render 'buf' when calling DrawList->AddText, making the comment above incorrect.
-            // FIXME-OPT: CPU waste to do this every time the widget is active, should mark dirty state from the stb_textedit callbacks.
-            if (is_editable)
-            {
-                edit_state.TempBuffer.resize(edit_state.TextW.Size * 4 + 1);
-                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data, NULL);
-            }
-
-            // User callback
-            if ((flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_CallbackHistory | ImGuiInputTextFlags_CallbackAlways)) != 0)
-            {
-                IM_ASSERT(callback != NULL);
-
-                // The reason we specify the usage semantic (Completion/History) is that Completion needs to disable keyboard TABBING at the moment.
-                ImGuiInputTextFlags event_flag = 0;
-                ImGuiKey event_key = ImGuiKey_COUNT;
-                if ((flags & ImGuiInputTextFlags_CallbackCompletion) != 0 && IsKeyPressedMap(ImGuiKey_Tab))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackCompletion;
-                    event_key = ImGuiKey_Tab;
-                }
-                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_UpArrow))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackHistory;
-                    event_key = ImGuiKey_UpArrow;
-                }
-                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_DownArrow))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackHistory;
-                    event_key = ImGuiKey_DownArrow;
-                }
-                else if (flags & ImGuiInputTextFlags_CallbackAlways)
-                    event_flag = ImGuiInputTextFlags_CallbackAlways;
-
-                if (event_flag)
-                {
-                    ImGuiInputTextCallbackData callback_data;
-                    memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
-                    callback_data.EventFlag = event_flag;
-                    callback_data.Flags = flags;
-                    callback_data.UserData = callback_user_data;
-
-                    callback_data.EventKey = event_key;
-                    callback_data.Buf = edit_state.TempBuffer.Data;
-                    callback_data.BufTextLen = edit_state.CurLenA;
-                    callback_data.BufSize = edit_state.BufCapacityA;
-                    callback_data.BufDirty = false;
-
-                    // We have to convert from wchar-positions to UTF-8-positions, which can be pretty slow (an incentive to ditch the ImWchar buffer, see https://github.com/nothings/stb/issues/188)
-                    ImWchar* text = edit_state.TextW.Data;
-                    const int utf8_cursor_pos = callback_data.CursorPos = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.cursor);
-                    const int utf8_selection_start = callback_data.SelectionStart = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_start);
-                    const int utf8_selection_end = callback_data.SelectionEnd = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_end);
-
-                    // Call user code
-                    callback(&callback_data);
-
-                    // Read back what user may have modified
-                    IM_ASSERT(callback_data.Buf == edit_state.TempBuffer.Data);  // Invalid to modify those fields
-                    IM_ASSERT(callback_data.BufSize == edit_state.BufCapacityA);
-                    IM_ASSERT(callback_data.Flags == flags);
-                    if (callback_data.CursorPos != utf8_cursor_pos)            { edit_state.StbState.cursor = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.CursorPos); edit_state.CursorFollow = true; }
-                    if (callback_data.SelectionStart != utf8_selection_start)  { edit_state.StbState.select_start = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionStart); }
-                    if (callback_data.SelectionEnd != utf8_selection_end)      { edit_state.StbState.select_end = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionEnd); }
-                    if (callback_data.BufDirty)
-                    {
-                        IM_ASSERT(callback_data.BufTextLen == (int)strlen(callback_data.Buf)); // You need to maintain BufTextLen if you change the text!
-                        if (callback_data.BufTextLen > backup_current_text_length && is_resizable)
-                            edit_state.TextW.resize(edit_state.TextW.Size + (callback_data.BufTextLen - backup_current_text_length));
-                        edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, callback_data.Buf, NULL);
-                        edit_state.CurLenA = callback_data.BufTextLen;  // Assume correct length and valid UTF-8 from user, saves us an extra strlen()
-                        edit_state.CursorAnimReset();
-                    }
-                }
-            }
-
-            // Will copy result string if modified
-            if (is_editable && strcmp(edit_state.TempBuffer.Data, buf) != 0)
-            {
-                apply_new_text = edit_state.TempBuffer.Data;
-                apply_new_text_length = edit_state.CurLenA;
-            }
-        }
-
-        // Copy result to user buffer
-        if (apply_new_text)
-        {
-            IM_ASSERT(apply_new_text_length >= 0);
-            if (backup_current_text_length != apply_new_text_length && is_resizable)
-            {
-                ImGuiInputTextCallbackData callback_data;
-                callback_data.EventFlag = ImGuiInputTextFlags_CallbackResize;
-                callback_data.Flags = flags;
-                callback_data.Buf = buf;
-                callback_data.BufTextLen = apply_new_text_length;
-                callback_data.BufSize = ImMax(buf_size, apply_new_text_length + 1);
-                callback_data.UserData = callback_user_data;
-                callback(&callback_data);
-                buf = callback_data.Buf;
-                buf_size = callback_data.BufSize;
-                apply_new_text_length = ImMin(callback_data.BufTextLen, buf_size - 1);
-                IM_ASSERT(apply_new_text_length <= buf_size);
-            }
-
-            // If the underlying buffer resize was denied or not carried to the next frame, apply_new_text_length+1 may be >= buf_size.
-            ImStrncpy(buf, edit_state.TempBuffer.Data, ImMin(apply_new_text_length + 1, buf_size));
-            value_changed = true;
-        }
-
-        // Clear temporary user storage
-        edit_state.UserFlags = 0;
-        edit_state.UserCallback = NULL;
-        edit_state.UserCallbackData = NULL;
-    }
-
-    // Release active ID at the end of the function (so e.g. pressing Return still does a final application of the value)
-    if (clear_active_id && g.ActiveId == id)
-        ClearActiveID();
-
-    // Render
-    // Select which buffer we are going to display. When ImGuiInputTextFlags_NoLiveEdit is set 'buf' might still be the old value. We set buf to NULL to prevent accidental usage from now on.
-    const char* buf_display = (g.ActiveId == id && is_editable) ? edit_state.TempBuffer.Data : buf; buf = NULL;
-
-    // Set upper limit of single-line InputTextEx() at 2 million characters strings. The current pathological worst case is a long line
-    // without any carriage return, which would makes ImFont::RenderText() reserve too many vertices and probably crash. Avoid it altogether.
-    // Note that we only use this limit on single-line InputText(), so a pathologically large line on a InputTextMultiline() would still crash.
-    const int buf_display_max_length = 2 * 1024 * 1024;
-
-    if (!is_multiline)
-    {
-        RenderNavHighlight(frame_bb, id);
-        RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-    }
-
-    const ImVec4 clip_rect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + size.x, frame_bb.Min.y + size.y); // Not using frame_bb.Max because we have adjusted size
-    ImVec2 render_pos = is_multiline ? draw_window->DC.CursorPos : frame_bb.Min + style.FramePadding;
-    ImVec2 text_size(0.f, 0.f);
-    const bool is_currently_scrolling = (edit_state.ID == id && is_multiline && g.ActiveId == draw_window->GetIDNoKeepAlive("#SCROLLY"));
-    if (g.ActiveId == id || is_currently_scrolling)
-    {
-        edit_state.CursorAnim += io.DeltaTime;
-
-        // This is going to be messy. We need to:
-        // - Display the text (this alone can be more easily clipped)
-        // - Handle scrolling, highlight selection, display cursor (those all requires some form of 1d->2d cursor position calculation)
-        // - Measure text height (for scrollbar)
-        // We are attempting to do most of that in **one main pass** to minimize the computation cost (non-negligible for large amount of text) + 2nd pass for selection rendering (we could merge them by an extra refactoring effort)
-        // FIXME: This should occur on buf_display but we'd need to maintain cursor/select_start/select_end for UTF-8.
-        const ImWchar* text_begin = edit_state.TextW.Data;
-        ImVec2 cursor_offset, select_start_offset;
-
-        {
-            // Count lines + find lines numbers straddling 'cursor' and 'select_start' position.
-            const ImWchar* searches_input_ptr[2];
-            searches_input_ptr[0] = text_begin + edit_state.StbState.cursor;
-            searches_input_ptr[1] = NULL;
-            int searches_remaining = 1;
-            int searches_result_line_number[2] = { -1, -999 };
-            if (edit_state.StbState.select_start != edit_state.StbState.select_end)
-            {
-                searches_input_ptr[1] = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
-                searches_result_line_number[1] = -1;
-                searches_remaining++;
-            }
-
-            // Iterate all lines to find our line numbers
-            // In multi-line mode, we never exit the loop until all lines are counted, so add one extra to the searches_remaining counter.
-            searches_remaining += is_multiline ? 1 : 0;
-            int line_count = 0;
-            for (const ImWchar* s = text_begin; *s != 0; s++)
-                if (*s == '\n')
-                {
-                    line_count++;
-                    if (searches_result_line_number[0] == -1 && s >= searches_input_ptr[0]) { searches_result_line_number[0] = line_count; if (--searches_remaining <= 0) break; }
-                    if (searches_result_line_number[1] == -1 && s >= searches_input_ptr[1]) { searches_result_line_number[1] = line_count; if (--searches_remaining <= 0) break; }
-                }
-            line_count++;
-            if (searches_result_line_number[0] == -1) searches_result_line_number[0] = line_count;
-            if (searches_result_line_number[1] == -1) searches_result_line_number[1] = line_count;
-
-            // Calculate 2d position by finding the beginning of the line and measuring distance
-            cursor_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[0], text_begin), searches_input_ptr[0]).x;
-            cursor_offset.y = searches_result_line_number[0] * g.FontSize;
-            if (searches_result_line_number[1] >= 0)
-            {
-                select_start_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[1], text_begin), searches_input_ptr[1]).x;
-                select_start_offset.y = searches_result_line_number[1] * g.FontSize;
-            }
-
-            // Store text height (note that we haven't calculated text width at all, see GitHub issues #383, #1224)
-            if (is_multiline)
-                text_size = ImVec2(size.x, line_count * g.FontSize);
-        }
-
-        // Scroll
-        if (edit_state.CursorFollow)
-        {
-            // Horizontal scroll in chunks of quarter width
-            if (!(flags & ImGuiInputTextFlags_NoHorizontalScroll))
-            {
-                const float scroll_increment_x = size.x * 0.25f;
-                if (cursor_offset.x < edit_state.ScrollX)
-                    edit_state.ScrollX = (float)(int)ImMax(0.0f, cursor_offset.x - scroll_increment_x);
-                else if (cursor_offset.x - size.x >= edit_state.ScrollX)
-                    edit_state.ScrollX = (float)(int)(cursor_offset.x - size.x + scroll_increment_x);
-            }
-            else
-            {
-                edit_state.ScrollX = 0.0f;
-            }
-
-            // Vertical scroll
-            if (is_multiline)
-            {
-                float scroll_y = draw_window->Scroll.y;
-                if (cursor_offset.y - g.FontSize < scroll_y)
-                    scroll_y = ImMax(0.0f, cursor_offset.y - g.FontSize);
-                else if (cursor_offset.y - size.y >= scroll_y)
-                    scroll_y = cursor_offset.y - size.y;
-                draw_window->DC.CursorPos.y += (draw_window->Scroll.y - scroll_y);   // To avoid a frame of lag
-                draw_window->Scroll.y = scroll_y;
-                render_pos.y = draw_window->DC.CursorPos.y;
-            }
-        }
-        edit_state.CursorFollow = false;
-        const ImVec2 render_scroll = ImVec2(edit_state.ScrollX, 0.0f);
-
-        // Draw selection
-        if (edit_state.StbState.select_start != edit_state.StbState.select_end)
-        {
-            const ImWchar* text_selected_begin = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
-            const ImWchar* text_selected_end = text_begin + ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end);
-
-            float bg_offy_up = is_multiline ? 0.0f : -1.0f;    // FIXME: those offsets should be part of the style? they don't play so well with multi-line selection.
-            float bg_offy_dn = is_multiline ? 0.0f : 2.0f;
-            ImU32 bg_color = GetColorU32(ImGuiCol_TextSelectedBg);
-            ImVec2 rect_pos = render_pos + select_start_offset - render_scroll;
-            for (const ImWchar* p = text_selected_begin; p < text_selected_end; )
-            {
-                if (rect_pos.y > clip_rect.w + g.FontSize)
-                    break;
-                if (rect_pos.y < clip_rect.y)
-                {
-                    while (p < text_selected_end)
-                        if (*p++ == '\n')
-                            break;
-                }
-                else
-                {
-                    ImVec2 rect_size = InputTextCalcTextSizeW(p, text_selected_end, &p, NULL, true);
-                    if (rect_size.x <= 0.0f) rect_size.x = (float)(int)(g.Font->GetCharAdvance((unsigned short)' ') * 0.50f); // So we can see selected empty lines
-                    ImRect rect(rect_pos + ImVec2(0.0f, bg_offy_up - g.FontSize), rect_pos +ImVec2(rect_size.x, bg_offy_dn));
-                    rect.ClipWith(clip_rect);
-                    if (rect.Overlaps(clip_rect))
-                        draw_window->DrawList->AddRectFilled(rect.Min, rect.Max, bg_color);
-                }
-                rect_pos.x = render_pos.x - render_scroll.x;
-                rect_pos.y += g.FontSize;
-            }
-        }
-
-        const int buf_display_len = edit_state.CurLenA;
-        if (is_multiline || buf_display_len < buf_display_max_length)
-            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos - render_scroll, GetColorU32(ImGuiCol_Text), buf_display, buf_display + buf_display_len, 0.0f, is_multiline ? NULL : &clip_rect);
-
-        // Draw blinking cursor
-        bool cursor_is_visible = (!g.IO.ConfigCursorBlink) || (g.InputTextState.CursorAnim <= 0.0f) || ImFmod(g.InputTextState.CursorAnim, 1.20f) <= 0.80f;
-        ImVec2 cursor_screen_pos = render_pos + cursor_offset - render_scroll;
-        ImRect cursor_screen_rect(cursor_screen_pos.x, cursor_screen_pos.y-g.FontSize+0.5f, cursor_screen_pos.x+1.0f, cursor_screen_pos.y-1.5f);
-        if (cursor_is_visible && cursor_screen_rect.Overlaps(clip_rect))
-            draw_window->DrawList->AddLine(cursor_screen_rect.Min, cursor_screen_rect.GetBL(), GetColorU32(ImGuiCol_Text));
-
-        // Notify OS of text input position for advanced IME (-1 x offset so that Windows IME can cover our cursor. Bit of an extra nicety.)
-        if (is_editable)
-            g.PlatformImePos = ImVec2(cursor_screen_pos.x - 1, cursor_screen_pos.y - g.FontSize);
-    }
-    else
-    {
-        // Render text only
-        const char* buf_end = NULL;
-        if (is_multiline)
-            text_size = ImVec2(size.x, InputTextCalcTextLenAndLineCount(buf_display, &buf_end) * g.FontSize); // We don't need width
-        else
-            buf_end = buf_display + strlen(buf_display);
-        if (is_multiline || (buf_end - buf_display) < buf_display_max_length)
-            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos, GetColorU32(ImGuiCol_Text), buf_display, buf_end, 0.0f, is_multiline ? NULL : &clip_rect);
-    }
-
-    if (is_multiline)
-    {
-        Dummy(text_size + ImVec2(0.0f, g.FontSize)); // Always add room to scroll an extra line
-        EndChildFrame();
-        EndGroup();
-    }
-
-    if (is_password)
-        PopFont();
-
-    // Log as text
-    if (g.LogEnabled && !is_password)
-        LogRenderedText(&render_pos, buf_display, NULL);
-
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    if (value_changed)
-        MarkItemEdited(id);
-
-    if ((flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0)
-        return enter_pressed;
-    else
-        return value_changed;
-}
-
-bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    IM_ASSERT(!(flags & ImGuiInputTextFlags_Multiline)); // call InputTextMultiline()
-    return InputTextEx(label, buf, (int)buf_size, ImVec2(0,0), flags, callback, user_data);
-}
-
-bool ImGui::InputTextMultiline(const char* label, char* buf, size_t buf_size, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    return InputTextEx(label, buf, (int)buf_size, size, flags | ImGuiInputTextFlags_Multiline, callback, user_data);
-}
-
-// NB: format here must be a simple "%xx" format string with no prefix/suffix (unlike the Drag/Slider functions "format" argument)
-bool ImGui::InputScalar(const char* label, ImGuiDataType data_type, void* data_ptr, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-
-    char buf[64];
-    DataTypeFormatString(buf, IM_ARRAYSIZE(buf), data_type, data_ptr, format);
-
-    bool value_changed = false;
-    if ((extra_flags & (ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsScientific)) == 0)
-        extra_flags |= ImGuiInputTextFlags_CharsDecimal;
-    extra_flags |= ImGuiInputTextFlags_AutoSelectAll;
-
-    if (step != NULL)
-    {
-        const float button_size = GetFrameHeight();
-
-        BeginGroup(); // The only purpose of the group here is to allow the caller to query item data e.g. IsItemActive()
-        PushID(label);
-        PushItemWidth(ImMax(1.0f, CalcItemWidth() - (button_size + style.ItemInnerSpacing.x) * 2));
-        if (InputText("", buf, IM_ARRAYSIZE(buf), extra_flags)) // PushId(label) + "" gives us the expected ID from outside point of view
-            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
-        PopItemWidth();
-
-        // Step buttons
-        SameLine(0, style.ItemInnerSpacing.x);
-        if (ButtonEx("-", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
-        {
-            DataTypeApplyOp(data_type, '-', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
-            value_changed = true;
-        }
-        SameLine(0, style.ItemInnerSpacing.x);
-        if (ButtonEx("+", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
-        {
-            DataTypeApplyOp(data_type, '+', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
-            value_changed = true;
-        }
-        SameLine(0, style.ItemInnerSpacing.x);
-        TextUnformatted(label, FindRenderedTextEnd(label));
-
-        PopID();
-        EndGroup();
-    }
-    else
-    {
-        if (InputText(label, buf, IM_ARRAYSIZE(buf), extra_flags))
-            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
-    }
-
-    return value_changed;
-}
-
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    extra_flags |= ImGuiInputTextFlags_CharsScientific;
-    return InputScalar(label, ImGuiDataType_Float, (void*)v, (void*)(step>0.0f ? &step : NULL), (void*)(step_fast>0.0f ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputDouble(const char* label, double* v, double step, double step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    extra_flags |= ImGuiInputTextFlags_CharsScientific;
-    return InputScalar(label, ImGuiDataType_Double, (void*)v, (void*)(step>0.0 ? &step : NULL), (void*)(step_fast>0.0 ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputInt(const char* label, int* v, int step, int step_fast, ImGuiInputTextFlags extra_flags)
-{
-    // Hexadecimal input provided as a convenience but the flag name is awkward. Typically you'd use InputText() to parse your own data, if you want to handle prefixes.
-    const char* format = (extra_flags & ImGuiInputTextFlags_CharsHexadecimal) ? "%08X" : "%d";
-    return InputScalar(label, ImGuiDataType_S32, (void*)v, (void*)(step>0 ? &step : NULL), (void*)(step_fast>0 ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= InputScalar("##v", data_type, v, step, step_fast, format, extra_flags);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
-}
-
-// Prefer using "const char* format" directly, which is more flexible and consistent with other API.
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputFloat(label, v, step, step_fast, format, extra_flags);
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
-}
-#endif // IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-
-bool ImGui::InputInt2(const char* label, int v[2], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 2, NULL, NULL, "%d", extra_flags);
-}
-
-bool ImGui::InputInt3(const char* label, int v[3], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 3, NULL, NULL, "%d", extra_flags);
-}
-
-bool ImGui::InputInt4(const char* label, int v[4], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 4, NULL, NULL, "%d", extra_flags);
-}
-
-static float CalcMaxPopupHeightFromItemCount(int items_count)
-{
-    ImGuiContext& g = *GImGui;
-    if (items_count <= 0)
-        return FLT_MAX;
-    return (g.FontSize + g.Style.ItemSpacing.y) * items_count - g.Style.ItemSpacing.y + (g.Style.WindowPadding.y * 2);
-}
-
-bool ImGui::BeginCombo(const char* label, const char* preview_value, ImGuiComboFlags flags)
-{
-    // Always consume the SetNextWindowSizeConstraint() call in our early return paths
-    ImGuiContext& g = *GImGui;
-    ImGuiCond backup_next_window_size_constraint = g.NextWindowData.SizeConstraintCond;
-    g.NextWindowData.SizeConstraintCond = 0;
-
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    IM_ASSERT((flags & (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)) != (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)); // Can't use both flags together
-
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    const float arrow_size = (flags & ImGuiComboFlags_NoArrowButton) ? 0.0f : GetFrameHeight();
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const float w = (flags & ImGuiComboFlags_NoPreview) ? arrow_size : CalcItemWidth();
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, id, &frame_bb))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(frame_bb, id, &hovered, &held);
-    bool popup_open = IsPopupOpen(id);
-
-    const ImRect value_bb(frame_bb.Min, frame_bb.Max - ImVec2(arrow_size, 0.0f));
-    const ImU32 frame_col = GetColorU32(hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    if (!(flags & ImGuiComboFlags_NoPreview))
-        window->DrawList->AddRectFilled(frame_bb.Min, ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Max.y), frame_col, style.FrameRounding, ImDrawCornerFlags_Left);
-    if (!(flags & ImGuiComboFlags_NoArrowButton))
-    {
-        window->DrawList->AddRectFilled(ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Min.y), frame_bb.Max, GetColorU32((popup_open || hovered) ? ImGuiCol_ButtonHovered : ImGuiCol_Button), style.FrameRounding, (w <= arrow_size) ? ImDrawCornerFlags_All : ImDrawCornerFlags_Right);
-        RenderArrow(ImVec2(frame_bb.Max.x - arrow_size + style.FramePadding.y, frame_bb.Min.y + style.FramePadding.y), ImGuiDir_Down);
-    }
-    RenderFrameBorder(frame_bb.Min, frame_bb.Max, style.FrameRounding);
-    if (preview_value != NULL && !(flags & ImGuiComboFlags_NoPreview))
-        RenderTextClipped(frame_bb.Min + style.FramePadding, value_bb.Max, preview_value, NULL, NULL, ImVec2(0.0f,0.0f));
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    if ((pressed || g.NavActivateId == id) && !popup_open)
-    {
-        if (window->DC.NavLayerCurrent == 0)
-            window->NavLastIds[0] = id;
-        OpenPopupEx(id);
-        popup_open = true;
-    }
-
-    if (!popup_open)
-        return false;
-
-    if (backup_next_window_size_constraint)
-    {
-        g.NextWindowData.SizeConstraintCond = backup_next_window_size_constraint;
-        g.NextWindowData.SizeConstraintRect.Min.x = ImMax(g.NextWindowData.SizeConstraintRect.Min.x, w);
-    }
-    else
-    {
-        if ((flags & ImGuiComboFlags_HeightMask_) == 0)
-            flags |= ImGuiComboFlags_HeightRegular;
-        IM_ASSERT(ImIsPowerOfTwo(flags & ImGuiComboFlags_HeightMask_));    // Only one
-        int popup_max_height_in_items = -1;
-        if (flags & ImGuiComboFlags_HeightRegular)     popup_max_height_in_items = 8;
-        else if (flags & ImGuiComboFlags_HeightSmall)  popup_max_height_in_items = 4;
-        else if (flags & ImGuiComboFlags_HeightLarge)  popup_max_height_in_items = 20;
-        SetNextWindowSizeConstraints(ImVec2(w, 0.0f), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
-    }
-
-    char name[16];
-    ImFormatString(name, IM_ARRAYSIZE(name), "##Combo_%02d", g.CurrentPopupStack.Size); // Recycle windows based on depth
-
-    // Peak into expected window size so we can position it
-    if (ImGuiWindow* popup_window = FindWindowByName(name))
-        if (popup_window->WasActive)
-        {
-            ImVec2 size_expected = CalcWindowExpectedSize(popup_window);
-            if (flags & ImGuiComboFlags_PopupAlignLeft)
-                popup_window->AutoPosLastDirection = ImGuiDir_Left;
-            ImRect r_outer = GetWindowAllowedExtentRect(popup_window);
-            ImVec2 pos = FindBestWindowPosForPopupEx(frame_bb.GetBL(), size_expected, &popup_window->AutoPosLastDirection, r_outer, frame_bb, ImGuiPopupPositionPolicy_ComboBox);
-            SetNextWindowPos(pos);
-        }
-
-    // Horizontally align ourselves with the framed text
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_Popup | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoSavedSettings;
-    PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(style.FramePadding.x, style.WindowPadding.y));
-    bool ret = Begin(name, NULL, window_flags);
-    PopStyleVar();
-    if (!ret)
-    {
-        EndPopup();
-        IM_ASSERT(0);   // This should never happen as we tested for IsPopupOpen() above
-        return false;
-    }
-    return true;
-}
-
-void ImGui::EndCombo()
-{
-    EndPopup();
-}
-
-// Getter for the old Combo() API: const char*[]
-static bool Items_ArrayGetter(void* data, int idx, const char** out_text)
-{
-    const char* const* items = (const char* const*)data;
-    if (out_text)
-        *out_text = items[idx];
-    return true;
-}
-
-// Getter for the old Combo() API: "item1\0item2\0item3\0"
-static bool Items_SingleStringGetter(void* data, int idx, const char** out_text)
-{
-    // FIXME-OPT: we could pre-compute the indices to fasten this. But only 1 active combo means the waste is limited.
-    const char* items_separated_by_zeros = (const char*)data;
-    int items_count = 0;
-    const char* p = items_separated_by_zeros;
-    while (*p)
-    {
-        if (idx == items_count)
-            break;
-        p += strlen(p) + 1;
-        items_count++;
-    }
-    if (!*p)
-        return false;
-    if (out_text)
-        *out_text = p;
-    return true;
-}
-
-// Old API, prefer using BeginCombo() nowadays if you can.
-bool ImGui::Combo(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int popup_max_height_in_items)
-{
-    ImGuiContext& g = *GImGui;
-
-    // Call the getter to obtain the preview string which is a parameter to BeginCombo()
-    const char* preview_value = NULL;
-    if (*current_item >= 0 && *current_item < items_count)
-        items_getter(data, *current_item, &preview_value);
-
-    // The old Combo() API exposed "popup_max_height_in_items". The new more general BeginCombo() API doesn't have/need it, but we emulate it here.
-    if (popup_max_height_in_items != -1 && !g.NextWindowData.SizeConstraintCond)
-        SetNextWindowSizeConstraints(ImVec2(0,0), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
-
-    if (!BeginCombo(label, preview_value, ImGuiComboFlags_None))
-        return false;
-
-    // Display items
-    // FIXME-OPT: Use clipper (but we need to disable it on the appearing frame to make sure our call to SetItemDefaultFocus() is processed)
-    bool value_changed = false;
-    for (int i = 0; i < items_count; i++)
-    {
-        PushID((void*)(intptr_t)i);
-        const bool item_selected = (i == *current_item);
-        const char* item_text;
-        if (!items_getter(data, i, &item_text))
-            item_text = "*Unknown item*";
-        if (Selectable(item_text, item_selected))
-        {
-            value_changed = true;
-            *current_item = i;
-        }
-        if (item_selected)
-            SetItemDefaultFocus();
-        PopID();
-    }
-
-    EndCombo();
-    return value_changed;
-}
-
-// Combo box helper allowing to pass an array of strings.
-bool ImGui::Combo(const char* label, int* current_item, const char* const items[], int items_count, int height_in_items)
-{
-    const bool value_changed = Combo(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_in_items);
-    return value_changed;
-}
-
-// Combo box helper allowing to pass all items in a single string literal holding multiple zero-terminated items "item1\0item2\0" 
-bool ImGui::Combo(const char* label, int* current_item, const char* items_separated_by_zeros, int height_in_items)
-{
-    int items_count = 0;
-    const char* p = items_separated_by_zeros;       // FIXME-OPT: Avoid computing this, or at least only when combo is open
-    while (*p)
-    {
-        p += strlen(p) + 1;
-        items_count++;
-    }
-    bool value_changed = Combo(label, current_item, Items_SingleStringGetter, (void*)items_separated_by_zeros, items_count, height_in_items);
-    return value_changed;
-}
-
-// Tip: pass an empty label (e.g. "##dummy") then you can use the space to draw other text or image.
-// But you need to make sure the ID is unique, e.g. enclose calls in PushID/PopID or use ##unique_id.
-bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet) // FIXME-OPT: Avoid if vertically clipped.
-        PopClipRect();
-
-    ImGuiID id = window->GetID(label);
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-    ImVec2 size(size_arg.x != 0.0f ? size_arg.x : label_size.x, size_arg.y != 0.0f ? size_arg.y : label_size.y);
-    ImVec2 pos = window->DC.CursorPos;
-    pos.y += window->DC.CurrentLineTextBaseOffset;
-    ImRect bb_inner(pos, pos + size);
-    ItemSize(bb_inner);
-
-    // Fill horizontal space.
-    ImVec2 window_padding = window->WindowPadding;
-    float max_x = (flags & ImGuiSelectableFlags_SpanAllColumns) ? GetWindowContentRegionMax().x : GetContentRegionMax().x;
-    float w_draw = ImMax(label_size.x, window->Pos.x + max_x - window_padding.x - window->DC.CursorPos.x);
-    ImVec2 size_draw((size_arg.x != 0 && !(flags & ImGuiSelectableFlags_DrawFillAvailWidth)) ? size_arg.x : w_draw, size_arg.y != 0.0f ? size_arg.y : size.y);
-    ImRect bb(pos, pos + size_draw);
-    if (size_arg.x == 0.0f || (flags & ImGuiSelectableFlags_DrawFillAvailWidth))
-        bb.Max.x += window_padding.x;
-
-    // Selectables are tightly packed together, we extend the box to cover spacing between selectable.
-    float spacing_L = (float)(int)(style.ItemSpacing.x * 0.5f);
-    float spacing_U = (float)(int)(style.ItemSpacing.y * 0.5f);
-    float spacing_R = style.ItemSpacing.x - spacing_L;
-    float spacing_D = style.ItemSpacing.y - spacing_U;
-    bb.Min.x -= spacing_L;
-    bb.Min.y -= spacing_U;
-    bb.Max.x += spacing_R;
-    bb.Max.y += spacing_D;
-    if (!ItemAdd(bb, (flags & ImGuiSelectableFlags_Disabled) ? 0 : id))
-    {
-        if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
-            PushColumnClipRect();
-        return false;
-    }
-
-    // We use NoHoldingActiveID on menus so user can click and _hold_ on a menu then drag to browse child entries
-    ImGuiButtonFlags button_flags = 0;
-    if (flags & ImGuiSelectableFlags_NoHoldingActiveID) button_flags |= ImGuiButtonFlags_NoHoldingActiveID;
-    if (flags & ImGuiSelectableFlags_PressedOnClick) button_flags |= ImGuiButtonFlags_PressedOnClick;
-    if (flags & ImGuiSelectableFlags_PressedOnRelease) button_flags |= ImGuiButtonFlags_PressedOnRelease;
-    if (flags & ImGuiSelectableFlags_Disabled) button_flags |= ImGuiButtonFlags_Disabled;
-    if (flags & ImGuiSelectableFlags_AllowDoubleClick) button_flags |= ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnDoubleClick;
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, button_flags);
-    if (flags & ImGuiSelectableFlags_Disabled)
-        selected = false;
-
-    // Hovering selectable with mouse updates NavId accordingly so navigation can be resumed with gamepad/keyboard (this doesn't happen on most widgets)
-    if (pressed || hovered)
-        if (!g.NavDisableMouseHover && g.NavWindow == window && g.NavLayer == window->DC.NavLayerCurrent)
-        {
-            g.NavDisableHighlight = true;
-            SetNavID(id, window->DC.NavLayerCurrent);
-        }
-    if (pressed)
-        MarkItemEdited(id);
-
-    // Render
-    if (hovered || selected)
-    {
-        const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
-        RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
-        RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_TypeThin | ImGuiNavHighlightFlags_NoRounding);
-    }
-
-    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
-    {
-        PushColumnClipRect();
-        bb.Max.x -= (GetContentRegionMax().x - max_x);
-    }
-
-    if (flags & ImGuiSelectableFlags_Disabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-    RenderTextClipped(bb_inner.Min, bb.Max, label, NULL, &label_size, ImVec2(0.0f,0.0f));
-    if (flags & ImGuiSelectableFlags_Disabled) PopStyleColor();
-
-    // Automatically close popups
-    if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_DontClosePopups) && !(window->DC.ItemFlags & ImGuiItemFlags_SelectableDontClosePopup))
-        CloseCurrentPopup();
-    return pressed;
-}
-
-bool ImGui::Selectable(const char* label, bool* p_selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
-{
-    if (Selectable(label, *p_selected, flags, size_arg))
-    {
-        *p_selected = !*p_selected;
-        return true;
-    }
-    return false;
-}
-
-// FIXME: Rename to BeginListBox()
-// Helper to calculate the size of a listbox and display a label on the right.
-// Tip: To have a list filling the entire window width, PushItemWidth(-1) and pass an empty label "##empty"
-bool ImGui::ListBoxHeader(const char* label, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    const ImGuiStyle& style = GetStyle();
-    const ImGuiID id = GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
-    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), GetTextLineHeightWithSpacing() * 7.4f + style.ItemSpacing.y);
-    ImVec2 frame_size = ImVec2(size.x, ImMax(size.y, label_size.y));
-    ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + frame_size);
-    ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-    window->DC.LastItemRect = bb; // Forward storage for ListBoxFooter.. dodgy.
-
-    BeginGroup();
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    BeginChildFrame(id, frame_bb.GetSize());
-    return true;
-}
-
-// FIXME: Rename to BeginListBox()
-bool ImGui::ListBoxHeader(const char* label, int items_count, int height_in_items)
-{
-    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
-    // We don't add +0.40f if items_count <= height_in_items. It is slightly dodgy, because it means a dynamic list of items will make the widget resize occasionally when it crosses that size.
-    // I am expecting that someone will come and complain about this behavior in a remote future, then we can advise on a better solution.
-    if (height_in_items < 0)
-        height_in_items = ImMin(items_count, 7);
-    float height_in_items_f = height_in_items < items_count ? (height_in_items + 0.40f) : (height_in_items + 0.00f);
-
-    // We include ItemSpacing.y so that a list sized for the exact number of items doesn't make a scrollbar appears. We could also enforce that by passing a flag to BeginChild().
-    ImVec2 size;
-    size.x = 0.0f;
-    size.y = GetTextLineHeightWithSpacing() * height_in_items_f + GetStyle().ItemSpacing.y;
-    return ListBoxHeader(label, size);
-}
-
-// FIXME: Rename to EndListBox()
-void ImGui::ListBoxFooter()
-{
-    ImGuiWindow* parent_window = GetCurrentWindow()->ParentWindow;
-    const ImRect bb = parent_window->DC.LastItemRect;
-    const ImGuiStyle& style = GetStyle();
-
-    EndChildFrame();
-
-    // Redeclare item size so that it includes the label (we have stored the full size in LastItemRect)
-    // We call SameLine() to restore DC.CurrentLine* data
-    SameLine();
-    parent_window->DC.CursorPos = bb.Min;
-    ItemSize(bb, style.FramePadding.y);
-    EndGroup();
-}
-
-bool ImGui::ListBox(const char* label, int* current_item, const char* const items[], int items_count, int height_items)
-{
-    const bool value_changed = ListBox(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_items);
-    return value_changed;
-}
-
-bool ImGui::ListBox(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int height_in_items)
-{
-    if (!ListBoxHeader(label, items_count, height_in_items))
-        return false;
-
-    // Assume all items have even height (= 1 line of text). If you need items of different or variable sizes you can create a custom version of ListBox() in your code without using the clipper.
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    ImGuiListClipper clipper(items_count, GetTextLineHeightWithSpacing()); // We know exactly our line height here so we pass it as a minor optimization, but generally you don't need to.
-    while (clipper.Step())
-        for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++)
-        {
-            const bool item_selected = (i == *current_item);
-            const char* item_text;
-            if (!items_getter(data, i, &item_text))
-                item_text = "*Unknown item*";
-
-            PushID(i);
-            if (Selectable(item_text, item_selected))
-            {
-                *current_item = i;
-                value_changed = true;
-            }
-            if (item_selected)
-                SetItemDefaultFocus();
-            PopID();
-        }
-    ListBoxFooter();
-    if (value_changed)
-        MarkItemEdited(g.CurrentWindow->DC.LastItemId);
-
-    return value_changed;
-}
-
-bool ImGui::MenuItem(const char* label, const char* shortcut, bool selected, bool enabled)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    ImGuiStyle& style = g.Style;
-    ImVec2 pos = window->DC.CursorPos;
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    ImGuiSelectableFlags flags = ImGuiSelectableFlags_PressedOnRelease | (enabled ? 0 : ImGuiSelectableFlags_Disabled);
-    bool pressed;
-    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
-    {
-        // Mimic the exact layout spacing of BeginMenu() to allow MenuItem() inside a menu bar, which is a little misleading but may be useful
-        // Note that in this situation we render neither the shortcut neither the selected tick mark
-        float w = label_size.x;
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
-        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
-        pressed = Selectable(label, false, flags, ImVec2(w, 0.0f));
-        PopStyleVar();
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
-    }
-    else
-    {
-        ImVec2 shortcut_size = shortcut ? CalcTextSize(shortcut, NULL) : ImVec2(0.0f, 0.0f);
-        float w = window->MenuColumns.DeclColumns(label_size.x, shortcut_size.x, (float)(int)(g.FontSize * 1.20f)); // Feedback for next frame
-        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
-        pressed = Selectable(label, false, flags | ImGuiSelectableFlags_DrawFillAvailWidth, ImVec2(w, 0.0f));
-        if (shortcut_size.x > 0.0f)
-        {
-            PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-            RenderText(pos + ImVec2(window->MenuColumns.Pos[1] + extra_w, 0.0f), shortcut, NULL, false);
-            PopStyleColor();
-        }
-        if (selected)
-            RenderCheckMark(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.40f, g.FontSize * 0.134f * 0.5f), GetColorU32(enabled ? ImGuiCol_Text : ImGuiCol_TextDisabled), g.FontSize  * 0.866f);
-    }
-    return pressed;
-}
-
-bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected, bool enabled)
-{
-    if (MenuItem(label, shortcut, p_selected ? *p_selected : false, enabled))
-    {
-        if (p_selected)
-            *p_selected = !*p_selected;
-        return true;
-    }
-    return false;
-}
-
-// For the main menu bar, which cannot be moved, we honor g.Style.DisplaySafeAreaPadding to ensure text can be visible on a TV set.
-bool ImGui::BeginMainMenuBar()
-{
-    ImGuiContext& g = *GImGui;
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(g.Style.DisplaySafeAreaPadding.x, ImMax(g.Style.DisplaySafeAreaPadding.y - g.Style.FramePadding.y, 0.0f));
-    SetNextWindowPos(ImVec2(0.0f, 0.0f));
-    SetNextWindowSize(ImVec2(g.IO.DisplaySize.x, g.NextWindowData.MenuBarOffsetMinVal.y + g.FontBaseSize + g.Style.FramePadding.y));
-    PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
-    PushStyleVar(ImGuiStyleVar_WindowMinSize, ImVec2(0,0));
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_MenuBar;
-    bool is_open = Begin("##MainMenuBar", NULL, window_flags) && BeginMenuBar();
-    PopStyleVar(2);
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(0.0f, 0.0f);
-    if (!is_open)
-    {
-        End();
-        return false;
-    }
-    return true;
-}
-
-void ImGui::EndMainMenuBar()
-{
-    EndMenuBar();
-
-    // When the user has left the menu layer (typically: closed menus through activation of an item), we restore focus to the previous window
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow == g.NavWindow && g.NavLayer == 0)
-        FocusFrontMostActiveWindowIgnoringOne(g.NavWindow);
-
-    End();
-}
-
-bool ImGui::BeginMenuBar()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-    if (!(window->Flags & ImGuiWindowFlags_MenuBar))
-        return false;
-
-    IM_ASSERT(!window->DC.MenuBarAppending);
-    BeginGroup(); // Backup position on layer 0
-    PushID("##menubar");
-
-    // We don't clip with current window clipping rectangle as it is already set to the area below. However we clip with window full rect.
-    // We remove 1 worth of rounding to Max.x to that text in long menus and small windows don't tend to display over the lower-right rounded area, which looks particularly glitchy.
-    ImRect bar_rect = window->MenuBarRect();
-    ImRect clip_rect(ImFloor(bar_rect.Min.x + 0.5f), ImFloor(bar_rect.Min.y + window->WindowBorderSize + 0.5f), ImFloor(ImMax(bar_rect.Min.x, bar_rect.Max.x - window->WindowRounding) + 0.5f), ImFloor(bar_rect.Max.y + 0.5f));
-    clip_rect.ClipWith(window->OuterRectClipped);
-    PushClipRect(clip_rect.Min, clip_rect.Max, false);
-
-    window->DC.CursorPos = ImVec2(bar_rect.Min.x + window->DC.MenuBarOffset.x, bar_rect.Min.y + window->DC.MenuBarOffset.y);
-    window->DC.LayoutType = ImGuiLayoutType_Horizontal;
-    window->DC.NavLayerCurrent++;
-    window->DC.NavLayerCurrentMask <<= 1;
-    window->DC.MenuBarAppending = true;
-    AlignTextToFramePadding();
-    return true;
-}
-
-void ImGui::EndMenuBar()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-    ImGuiContext& g = *GImGui;
-
-    // Nav: When a move request within one of our child menu failed, capture the request to navigate among our siblings.
-    if (NavMoveRequestButNoResultYet() && (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right) && (g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
-    {
-        ImGuiWindow* nav_earliest_child = g.NavWindow;
-        while (nav_earliest_child->ParentWindow && (nav_earliest_child->ParentWindow->Flags & ImGuiWindowFlags_ChildMenu))
-            nav_earliest_child = nav_earliest_child->ParentWindow;
-        if (nav_earliest_child->ParentWindow == window && nav_earliest_child->DC.ParentLayoutType == ImGuiLayoutType_Horizontal && g.NavMoveRequestForward == ImGuiNavForward_None)
-        {
-            // To do so we claim focus back, restore NavId and then process the movement request for yet another frame.
-            // This involve a one-frame delay which isn't very problematic in this situation. We could remove it by scoring in advance for multiple window (probably not worth the hassle/cost)
-            IM_ASSERT(window->DC.NavLayerActiveMaskNext & 0x02); // Sanity check
-            FocusWindow(window);
-            SetNavIDWithRectRel(window->NavLastIds[1], 1, window->NavRectRel[1]);
-            g.NavLayer = 1;
-            g.NavDisableHighlight = true; // Hide highlight for the current frame so we don't see the intermediary selection.
-            g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
-            NavMoveRequestCancel();
-        }
-    }
-
-    IM_ASSERT(window->Flags & ImGuiWindowFlags_MenuBar);
-    IM_ASSERT(window->DC.MenuBarAppending);
-    PopClipRect();
-    PopID();
-    window->DC.MenuBarOffset.x = window->DC.CursorPos.x - window->MenuBarRect().Min.x; // Save horizontal position so next append can reuse it. This is kinda equivalent to a per-layer CursorPos.
-    window->DC.GroupStack.back().AdvanceCursor = false;
-    EndGroup(); // Restore position on layer 0
-    window->DC.LayoutType = ImGuiLayoutType_Vertical;
-    window->DC.NavLayerCurrent--;
-    window->DC.NavLayerCurrentMask >>= 1;
-    window->DC.MenuBarAppending = false;
-}
-
-bool ImGui::BeginMenu(const char* label, bool enabled)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    bool pressed;
-    bool menu_is_open = IsPopupOpen(id);
-    bool menuset_is_open = !(window->Flags & ImGuiWindowFlags_Popup) && (g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].OpenParentId == window->IDStack.back());
-    ImGuiWindow* backed_nav_window = g.NavWindow;
-    if (menuset_is_open)
-        g.NavWindow = window;  // Odd hack to allow hovering across menus of a same menu-set (otherwise we wouldn't be able to hover parent)
-
-    // The reference position stored in popup_pos will be used by Begin() to find a suitable position for the child menu (using FindBestWindowPosForPopup).
-    ImVec2 popup_pos, pos = window->DC.CursorPos;
-    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
-    {
-        // Menu inside an horizontal menu bar
-        // Selectable extend their highlight by half ItemSpacing in each direction.
-        // For ChildMenu, the popup position will be overwritten by the call to FindBestWindowPosForPopup() in Begin()
-        popup_pos = ImVec2(pos.x - window->WindowPadding.x, pos.y - style.FramePadding.y + window->MenuBarHeight());
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
-        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
-        float w = label_size.x;
-        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
-        PopStyleVar();
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
-    }
-    else
-    {
-        // Menu inside a menu
-        popup_pos = ImVec2(pos.x, pos.y - style.WindowPadding.y);
-        float w = window->MenuColumns.DeclColumns(label_size.x, 0.0f, (float)(int)(g.FontSize * 1.20f)); // Feedback to next frame
-        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
-        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | ImGuiSelectableFlags_DrawFillAvailWidth | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
-        if (!enabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-        RenderArrow(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.30f, 0.0f), ImGuiDir_Right);
-        if (!enabled) PopStyleColor();
-    }
-
-    const bool hovered = enabled && ItemHoverable(window->DC.LastItemRect, id);
-    if (menuset_is_open)
-        g.NavWindow = backed_nav_window;
-
-    bool want_open = false, want_close = false;
-    if (window->DC.LayoutType == ImGuiLayoutType_Vertical) // (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
-    {
-        // Implement http://bjk5.com/post/44698559168/breaking-down-amazons-mega-dropdown to avoid using timers, so menus feels more reactive.
-        bool moving_within_opened_triangle = false;
-        if (g.HoveredWindow == window && g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].ParentWindow == window && !(window->Flags & ImGuiWindowFlags_MenuBar))
-        {
-            if (ImGuiWindow* next_window = g.OpenPopupStack[g.CurrentPopupStack.Size].Window)
-            {
-                ImRect next_window_rect = next_window->Rect();
-                ImVec2 ta = g.IO.MousePos - g.IO.MouseDelta;
-                ImVec2 tb = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetTL() : next_window_rect.GetTR();
-                ImVec2 tc = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetBL() : next_window_rect.GetBR();
-                float extra = ImClamp(ImFabs(ta.x - tb.x) * 0.30f, 5.0f, 30.0f); // add a bit of extra slack.
-                ta.x += (window->Pos.x < next_window->Pos.x) ? -0.5f : +0.5f;   // to avoid numerical issues
-                tb.y = ta.y + ImMax((tb.y - extra) - ta.y, -100.0f);            // triangle is maximum 200 high to limit the slope and the bias toward large sub-menus // FIXME: Multiply by fb_scale?
-                tc.y = ta.y + ImMin((tc.y + extra) - ta.y, +100.0f);
-                moving_within_opened_triangle = ImTriangleContainsPoint(ta, tb, tc, g.IO.MousePos);
-                //window->DrawList->PushClipRectFullScreen(); window->DrawList->AddTriangleFilled(ta, tb, tc, moving_within_opened_triangle ? IM_COL32(0,128,0,128) : IM_COL32(128,0,0,128)); window->DrawList->PopClipRect(); // Debug
-            }
-        }
-
-        want_close = (menu_is_open && !hovered && g.HoveredWindow == window && g.HoveredIdPreviousFrame != 0 && g.HoveredIdPreviousFrame != id && !moving_within_opened_triangle);
-        want_open = (!menu_is_open && hovered && !moving_within_opened_triangle) || (!menu_is_open && hovered && pressed);
-
-        if (g.NavActivateId == id)
-        {
-            want_close = menu_is_open;
-            want_open = !menu_is_open;
-        }
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right) // Nav-Right to open
-        {
-            want_open = true;
-            NavMoveRequestCancel();
-        }
-    }
-    else
-    {
-        // Menu bar
-        if (menu_is_open && pressed && menuset_is_open) // Click an open menu again to close it
-        {
-            want_close = true;
-            want_open = menu_is_open = false;
-        }
-        else if (pressed || (hovered && menuset_is_open && !menu_is_open)) // First click to open, then hover to open others
-        {
-            want_open = true;
-        }
-        else if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Down) // Nav-Down to open
-        {
-            want_open = true;
-            NavMoveRequestCancel();
-        }
-    }
-
-    if (!enabled) // explicitly close if an open menu becomes disabled, facilitate users code a lot in pattern such as 'if (BeginMenu("options", has_object)) { ..use object.. }'
-        want_close = true;
-    if (want_close && IsPopupOpen(id))
-        ClosePopupToLevel(g.CurrentPopupStack.Size);
-
-    if (!menu_is_open && want_open && g.OpenPopupStack.Size > g.CurrentPopupStack.Size)
-    {
-        // Don't recycle same menu level in the same frame, first close the other menu and yield for a frame.
-        OpenPopup(label);
-        return false;
-    }
-
-    menu_is_open |= want_open;
-    if (want_open)
-        OpenPopup(label);
-
-    if (menu_is_open)
-    {
-        // Sub-menus are ChildWindow so that mouse can be hovering across them (otherwise top-most popup menu would steal focus and not allow hovering on parent menu)
-        SetNextWindowPos(popup_pos, ImGuiCond_Always);
-        ImGuiWindowFlags flags = ImGuiWindowFlags_ChildMenu | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoNavFocus;
-        if (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
-            flags |= ImGuiWindowFlags_ChildWindow;
-        menu_is_open = BeginPopupEx(id, flags); // menu_is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-    }
-
-    return menu_is_open;
-}
-
-void ImGui::EndMenu()
-{
-    // Nav: When a left move request _within our child menu_ failed, close the menu.
-    // A menu doesn't close itself because EndMenuBar() wants the catch the last Left<>Right inputs.
-    // However, it means that with the current code, a BeginMenu() from outside another menu or a menu-bar won't be closable with the Left direction.
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    if (g.NavWindow && g.NavWindow->ParentWindow == window && g.NavMoveDir == ImGuiDir_Left && NavMoveRequestButNoResultYet() && window->DC.LayoutType == ImGuiLayoutType_Vertical)
-    {
-        ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-        NavMoveRequestCancel();
-    }
-
-    EndPopup();
-}
-
-// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-void ImGui::ColorTooltip(const char* text, const float* col, ImGuiColorEditFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-
-    int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
-    BeginTooltipEx(0, true);
-
-    const char* text_end = text ? FindRenderedTextEnd(text, NULL) : text;
-    if (text_end > text)
-    {
-        TextUnformatted(text, text_end);
-        Separator();
-    }
-
-    ImVec2 sz(g.FontSize * 3 + g.Style.FramePadding.y * 2, g.FontSize * 3 + g.Style.FramePadding.y * 2);
-    ColorButton("##preview", ImVec4(col[0], col[1], col[2], col[3]), (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf)) | ImGuiColorEditFlags_NoTooltip, sz);
-    SameLine();
-    if (flags & ImGuiColorEditFlags_NoAlpha)
-        Text("#%02X%02X%02X\nR: %d, G: %d, B: %d\n(%.3f, %.3f, %.3f)", cr, cg, cb, cr, cg, cb, col[0], col[1], col[2]);
-    else
-        Text("#%02X%02X%02X%02X\nR:%d, G:%d, B:%d, A:%d\n(%.3f, %.3f, %.3f, %.3f)", cr, cg, cb, ca, cr, cg, cb, ca, col[0], col[1], col[2], col[3]);
-    EndTooltip();
-}
-
-static inline ImU32 ImAlphaBlendColor(ImU32 col_a, ImU32 col_b)
-{
-    float t = ((col_b >> IM_COL32_A_SHIFT) & 0xFF) / 255.f;
-    int r = ImLerp((int)(col_a >> IM_COL32_R_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_R_SHIFT) & 0xFF, t);
-    int g = ImLerp((int)(col_a >> IM_COL32_G_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_G_SHIFT) & 0xFF, t);
-    int b = ImLerp((int)(col_a >> IM_COL32_B_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_B_SHIFT) & 0xFF, t);
-    return IM_COL32(r, g, b, 0xFF);
-}
-
-// NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Caller currently responsible for avoiding that.
-// I spent a non reasonable amount of time trying to getting this right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and offsets, and eventually gave up... probably more reasonable to disable rounding alltogether.
-void ImGui::RenderColorRectWithAlphaCheckerboard(ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, int rounding_corners_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF)
-    {
-        ImU32 col_bg1 = GetColorU32(ImAlphaBlendColor(IM_COL32(204,204,204,255), col));
-        ImU32 col_bg2 = GetColorU32(ImAlphaBlendColor(IM_COL32(128,128,128,255), col));
-        window->DrawList->AddRectFilled(p_min, p_max, col_bg1, rounding, rounding_corners_flags);
-
-        int yi = 0;
-        for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++)
-        {
-            float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y);
-            if (y2 <= y1)
-                continue;
-            for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f)
-            {
-                float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x);
-                if (x2 <= x1)
-                    continue;
-                int rounding_corners_flags_cell = 0;
-                if (y1 <= p_min.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopRight; }
-                if (y2 >= p_max.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotRight; }
-                rounding_corners_flags_cell &= rounding_corners_flags;
-                window->DrawList->AddRectFilled(ImVec2(x1,y1), ImVec2(x2,y2), col_bg2, rounding_corners_flags_cell ? rounding : 0.0f, rounding_corners_flags_cell);
-            }
-        }
-    }
-    else
-    {
-        window->DrawList->AddRectFilled(p_min, p_max, col, rounding, rounding_corners_flags);
-    }
-}
-
-void ImGui::SetColorEditOptions(ImGuiColorEditFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    if ((flags & ImGuiColorEditFlags__InputsMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__InputsMask;
-    if ((flags & ImGuiColorEditFlags__DataTypeMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__DataTypeMask;
-    if ((flags & ImGuiColorEditFlags__PickerMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__PickerMask;
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__InputsMask)));   // Check only 1 option is selected
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__DataTypeMask))); // Check only 1 option is selected
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask)));   // Check only 1 option is selected
-    g.ColorEditOptions = flags;
-}
-
-// A little colored square. Return true when clicked.
-// FIXME: May want to display/ignore the alpha component in the color display? Yet show it in the tooltip.
-// 'desc_id' is not called 'label' because we don't display it next to the button, but only in the tooltip.
-bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFlags flags, ImVec2 size)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiID id = window->GetID(desc_id);
-    float default_size = GetFrameHeight();
-    if (size.x == 0.0f)
-        size.x = default_size;
-    if (size.y == 0.0f)
-        size.y = default_size;
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    if (flags & ImGuiColorEditFlags_NoAlpha)
-        flags &= ~(ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf);
-
-    ImVec4 col_without_alpha(col.x, col.y, col.z, 1.0f);
-    float grid_step = ImMin(size.x, size.y) / 2.99f;
-    float rounding = ImMin(g.Style.FrameRounding, grid_step * 0.5f);
-    ImRect bb_inner = bb;
-    float off = -0.75f; // The border (using Col_FrameBg) tends to look off when color is near-opaque and rounding is enabled. This offset seemed like a good middle ground to reduce those artifacts.
-    bb_inner.Expand(off);
-    if ((flags & ImGuiColorEditFlags_AlphaPreviewHalf) && col.w < 1.0f)
-    {
-        float mid_x = (float)(int)((bb_inner.Min.x + bb_inner.Max.x) * 0.5f + 0.5f);
-        RenderColorRectWithAlphaCheckerboard(ImVec2(bb_inner.Min.x + grid_step, bb_inner.Min.y), bb_inner.Max, GetColorU32(col), grid_step, ImVec2(-grid_step + off, off), rounding, ImDrawCornerFlags_TopRight| ImDrawCornerFlags_BotRight);
-        window->DrawList->AddRectFilled(bb_inner.Min, ImVec2(mid_x, bb_inner.Max.y), GetColorU32(col_without_alpha), rounding, ImDrawCornerFlags_TopLeft|ImDrawCornerFlags_BotLeft);
-    }
-    else
-    {
-        // Because GetColorU32() multiplies by the global style Alpha and we don't want to display a checkerboard if the source code had no alpha
-        ImVec4 col_source = (flags & ImGuiColorEditFlags_AlphaPreview) ? col : col_without_alpha;
-        if (col_source.w < 1.0f)
-            RenderColorRectWithAlphaCheckerboard(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), grid_step, ImVec2(off, off), rounding);
-        else
-            window->DrawList->AddRectFilled(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), rounding, ImDrawCornerFlags_All);
-    }
-    RenderNavHighlight(bb, id);
-    if (g.Style.FrameBorderSize > 0.0f)
-        RenderFrameBorder(bb.Min, bb.Max, rounding);
-    else
-        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), rounding); // Color button are often in need of some sort of border
-
-    // Drag and Drop Source
-    // NB: The ActiveId test is merely an optional micro-optimization, BeginDragDropSource() does the same test.
-    if (g.ActiveId == id && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropSource())
-    {
-        if (flags & ImGuiColorEditFlags_NoAlpha)
-            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F, &col, sizeof(float) * 3, ImGuiCond_Once);
-        else
-            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F, &col, sizeof(float) * 4, ImGuiCond_Once);
-        ColorButton(desc_id, col, flags);
-        SameLine();
-        TextUnformatted("Color");
-        EndDragDropSource();
-    }
-
-    // Tooltip
-    if (!(flags & ImGuiColorEditFlags_NoTooltip) && hovered)
-        ColorTooltip(desc_id, &col.x, flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf));
-
-    if (pressed)
-        MarkItemEdited(id);
-
-    return pressed;
-}
-
-bool ImGui::ColorEdit3(const char* label, float col[3], ImGuiColorEditFlags flags)
-{
-    return ColorEdit4(label, col, flags | ImGuiColorEditFlags_NoAlpha);
-}
-
-void ImGui::ColorEditOptionsPopup(const float* col, ImGuiColorEditFlags flags)
-{
-    bool allow_opt_inputs = !(flags & ImGuiColorEditFlags__InputsMask);
-    bool allow_opt_datatype = !(flags & ImGuiColorEditFlags__DataTypeMask);
-    if ((!allow_opt_inputs && !allow_opt_datatype) || !BeginPopup("context"))
-        return;
-    ImGuiContext& g = *GImGui;
-    ImGuiColorEditFlags opts = g.ColorEditOptions;
-    if (allow_opt_inputs)
-    {
-        if (RadioButton("RGB", (opts & ImGuiColorEditFlags_RGB) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_RGB;
-        if (RadioButton("HSV", (opts & ImGuiColorEditFlags_HSV) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HSV;
-        if (RadioButton("HEX", (opts & ImGuiColorEditFlags_HEX) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HEX;
-    }
-    if (allow_opt_datatype)
-    {
-        if (allow_opt_inputs) Separator();
-        if (RadioButton("0..255",     (opts & ImGuiColorEditFlags_Uint8) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Uint8;
-        if (RadioButton("0.00..1.00", (opts & ImGuiColorEditFlags_Float) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Float;
-    }
-
-    if (allow_opt_inputs || allow_opt_datatype)
-        Separator();
-    if (Button("Copy as..", ImVec2(-1,0)))
-        OpenPopup("Copy");
-    if (BeginPopup("Copy"))
-    {
-        int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
-        char buf[64];
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%.3ff, %.3ff, %.3ff, %.3ff)", col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%d,%d,%d,%d)", cr, cg, cb, ca);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        if (flags & ImGuiColorEditFlags_NoAlpha)
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X", cr, cg, cb);
-        else
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X%02X", cr, cg, cb, ca);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        EndPopup();
-    }
-
-    g.ColorEditOptions = opts;
-    EndPopup();
-}
-
-void ImGui::ColorPickerOptionsPopup(const float* ref_col, ImGuiColorEditFlags flags)
-{
-    bool allow_opt_picker = !(flags & ImGuiColorEditFlags__PickerMask);
-    bool allow_opt_alpha_bar = !(flags & ImGuiColorEditFlags_NoAlpha) && !(flags & ImGuiColorEditFlags_AlphaBar);
-    if ((!allow_opt_picker && !allow_opt_alpha_bar) || !ImGui::BeginPopup("context"))
-        return;
-    ImGuiContext& g = *GImGui;
-    if (allow_opt_picker)
-    {
-        ImVec2 picker_size(g.FontSize * 8, ImMax(g.FontSize * 8 - (ImGui::GetFrameHeight() + g.Style.ItemInnerSpacing.x), 1.0f)); // FIXME: Picker size copied from main picker function
-        ImGui::PushItemWidth(picker_size.x);
-        for (int picker_type = 0; picker_type < 2; picker_type++)
-        {
-            // Draw small/thumbnail version of each picker type (over an invisible button for selection)
-            if (picker_type > 0) ImGui::Separator();
-            ImGui::PushID(picker_type);
-            ImGuiColorEditFlags picker_flags = ImGuiColorEditFlags_NoInputs|ImGuiColorEditFlags_NoOptions|ImGuiColorEditFlags_NoLabel|ImGuiColorEditFlags_NoSidePreview|(flags & ImGuiColorEditFlags_NoAlpha);
-            if (picker_type == 0) picker_flags |= ImGuiColorEditFlags_PickerHueBar;
-            if (picker_type == 1) picker_flags |= ImGuiColorEditFlags_PickerHueWheel;
-            ImVec2 backup_pos = ImGui::GetCursorScreenPos();
-            if (ImGui::Selectable("##selectable", false, 0, picker_size)) // By default, Selectable() is closing popup
-                g.ColorEditOptions = (g.ColorEditOptions & ~ImGuiColorEditFlags__PickerMask) | (picker_flags & ImGuiColorEditFlags__PickerMask);
-            ImGui::SetCursorScreenPos(backup_pos);
-            ImVec4 dummy_ref_col;
-            memcpy(&dummy_ref_col.x, ref_col, sizeof(float) * (picker_flags & ImGuiColorEditFlags_NoAlpha ? 3 : 4));
-            ImGui::ColorPicker4("##dummypicker", &dummy_ref_col.x, picker_flags);
-            ImGui::PopID();
-        }
-        ImGui::PopItemWidth();
-    }
-    if (allow_opt_alpha_bar)
-    {
-        if (allow_opt_picker) ImGui::Separator();
-        ImGui::CheckboxFlags("Alpha Bar", (unsigned int*)&g.ColorEditOptions, ImGuiColorEditFlags_AlphaBar);
-    }
-    ImGui::EndPopup();
-}
-
-// Edit colors components (each component in 0.0f..1.0f range).
-// See enum ImGuiColorEditFlags_ for available options. e.g. Only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-// With typical options: Left-click on colored square to open color picker. Right-click to open option menu. CTRL-Click over input fields to edit them and TAB to go to next item.
-bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float square_sz = GetFrameHeight();
-    const float w_extra = (flags & ImGuiColorEditFlags_NoSmallPreview) ? 0.0f : (square_sz + style.ItemInnerSpacing.x);
-    const float w_items_all = CalcItemWidth() - w_extra;
-    const char* label_display_end = FindRenderedTextEnd(label);
-
-    BeginGroup();
-    PushID(label);
-
-    // If we're not showing any slider there's no point in doing any HSV conversions
-    const ImGuiColorEditFlags flags_untouched = flags;
-    if (flags & ImGuiColorEditFlags_NoInputs)
-        flags = (flags & (~ImGuiColorEditFlags__InputsMask)) | ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_NoOptions;
-
-    // Context menu: display and modify options (before defaults are applied)
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-        ColorEditOptionsPopup(col, flags);
-
-    // Read stored options
-    if (!(flags & ImGuiColorEditFlags__InputsMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__InputsMask);
-    if (!(flags & ImGuiColorEditFlags__DataTypeMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__DataTypeMask);
-    if (!(flags & ImGuiColorEditFlags__PickerMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__PickerMask);
-    flags |= (g.ColorEditOptions & ~(ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask));
-
-    const bool alpha = (flags & ImGuiColorEditFlags_NoAlpha) == 0;
-    const bool hdr = (flags & ImGuiColorEditFlags_HDR) != 0;
-    const int components = alpha ? 4 : 3;
-
-    // Convert to the formats we need
-    float f[4] = { col[0], col[1], col[2], alpha ? col[3] : 1.0f };
-    if (flags & ImGuiColorEditFlags_HSV)
-        ColorConvertRGBtoHSV(f[0], f[1], f[2], f[0], f[1], f[2]);
-    int i[4] = { IM_F32_TO_INT8_UNBOUND(f[0]), IM_F32_TO_INT8_UNBOUND(f[1]), IM_F32_TO_INT8_UNBOUND(f[2]), IM_F32_TO_INT8_UNBOUND(f[3]) };
-
-    bool value_changed = false;
-    bool value_changed_as_float = false;
-
-    if ((flags & (ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_HSV)) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        // RGB/HSV 0..255 Sliders
-        const float w_item_one  = ImMax(1.0f, (float)(int)((w_items_all - (style.ItemInnerSpacing.x) * (components-1)) / (float)components));
-        const float w_item_last = ImMax(1.0f, (float)(int)(w_items_all - (w_item_one + style.ItemInnerSpacing.x) * (components-1)));
-
-        const bool hide_prefix = (w_item_one <= CalcTextSize((flags & ImGuiColorEditFlags_Float) ? "M:0.000" : "M:000").x);
-        const char* ids[4] = { "##X", "##Y", "##Z", "##W" };
-        const char* fmt_table_int[3][4] =
-        {
-            {   "%3d",   "%3d",   "%3d",   "%3d" }, // Short display
-            { "R:%3d", "G:%3d", "B:%3d", "A:%3d" }, // Long display for RGBA
-            { "H:%3d", "S:%3d", "V:%3d", "A:%3d" }  // Long display for HSVA
-        };
-        const char* fmt_table_float[3][4] =
-        {
-            {   "%0.3f",   "%0.3f",   "%0.3f",   "%0.3f" }, // Short display
-            { "R:%0.3f", "G:%0.3f", "B:%0.3f", "A:%0.3f" }, // Long display for RGBA
-            { "H:%0.3f", "S:%0.3f", "V:%0.3f", "A:%0.3f" }  // Long display for HSVA
-        };
-        const int fmt_idx = hide_prefix ? 0 : (flags & ImGuiColorEditFlags_HSV) ? 2 : 1;
-
-        PushItemWidth(w_item_one);
-        for (int n = 0; n < components; n++)
-        {
-            if (n > 0)
-                SameLine(0, style.ItemInnerSpacing.x);
-            if (n + 1 == components)
-                PushItemWidth(w_item_last);
-            if (flags & ImGuiColorEditFlags_Float)
-                value_changed = value_changed_as_float = value_changed | DragFloat(ids[n], &f[n], 1.0f/255.0f, 0.0f, hdr ? 0.0f : 1.0f, fmt_table_float[fmt_idx][n]);
-            else
-                value_changed |= DragInt(ids[n], &i[n], 1.0f, 0, hdr ? 0 : 255, fmt_table_int[fmt_idx][n]);
-            if (!(flags & ImGuiColorEditFlags_NoOptions))
-                OpenPopupOnItemClick("context");
-        }
-        PopItemWidth();
-        PopItemWidth();
-    }
-    else if ((flags & ImGuiColorEditFlags_HEX) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        // RGB Hexadecimal Input
-        char buf[64];
-        if (alpha)
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255), ImClamp(i[3],0,255));
-        else
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255));
-        PushItemWidth(w_items_all);
-        if (InputText("##Text", buf, IM_ARRAYSIZE(buf), ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase))
-        {
-            value_changed = true;
-            char* p = buf;
-            while (*p == '#' || ImCharIsBlankA(*p))
-                p++;
-            i[0] = i[1] = i[2] = i[3] = 0;
-            if (alpha)
-                sscanf(p, "%02X%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2], (unsigned int*)&i[3]); // Treat at unsigned (%X is unsigned)
-            else
-                sscanf(p, "%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2]);
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-        PopItemWidth();
-    }
-
-    ImGuiWindow* picker_active_window = NULL;
-    if (!(flags & ImGuiColorEditFlags_NoSmallPreview))
-    {
-        if (!(flags & ImGuiColorEditFlags_NoInputs))
-            SameLine(0, style.ItemInnerSpacing.x);
-
-        const ImVec4 col_v4(col[0], col[1], col[2], alpha ? col[3] : 1.0f);
-        if (ColorButton("##ColorButton", col_v4, flags))
-        {
-            if (!(flags & ImGuiColorEditFlags_NoPicker))
-            {
-                // Store current color and open a picker
-                g.ColorPickerRef = col_v4;
-                OpenPopup("picker");
-                SetNextWindowPos(window->DC.LastItemRect.GetBL() + ImVec2(-1,style.ItemSpacing.y));
-            }
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-
-        if (BeginPopup("picker"))
-        {
-            picker_active_window = g.CurrentWindow;
-            if (label != label_display_end)
-            {
-                TextUnformatted(label, label_display_end);
-                Separator();
-            }
-            ImGuiColorEditFlags picker_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaBar;
-            ImGuiColorEditFlags picker_flags = (flags_untouched & picker_flags_to_forward) | ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags_NoLabel | ImGuiColorEditFlags_AlphaPreviewHalf;
-            PushItemWidth(square_sz * 12.0f); // Use 256 + bar sizes?
-            value_changed |= ColorPicker4("##picker", col, picker_flags, &g.ColorPickerRef.x);
-            PopItemWidth();
-            EndPopup();
-        }
-    }
-
-    if (label != label_display_end && !(flags & ImGuiColorEditFlags_NoLabel))
-    {
-        SameLine(0, style.ItemInnerSpacing.x);
-        TextUnformatted(label, label_display_end);
-    }
-
-    // Convert back
-    if (picker_active_window == NULL)
-    {
-        if (!value_changed_as_float)
-            for (int n = 0; n < 4; n++)
-                f[n] = i[n] / 255.0f;
-        if (flags & ImGuiColorEditFlags_HSV)
-            ColorConvertHSVtoRGB(f[0], f[1], f[2], f[0], f[1], f[2]);
-        if (value_changed)
-        {
-            col[0] = f[0];
-            col[1] = f[1];
-            col[2] = f[2];
-            if (alpha)
-                col[3] = f[3];
-        }
-    }
-
-    PopID();
-    EndGroup();
-
-    // Drag and Drop Target
-    // NB: The flag test is merely an optional micro-optimization, BeginDragDropTarget() does the same test.
-    if ((window->DC.LastItemStatusFlags & ImGuiItemStatusFlags_HoveredRect) && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropTarget())
-    {
-        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F))
-        {
-            memcpy((float*)col, payload->Data, sizeof(float) * 3);
-            value_changed = true;
-        }
-        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F))
-        {
-            memcpy((float*)col, payload->Data, sizeof(float) * components);
-            value_changed = true;
-        }
-        EndDragDropTarget();
-    }
-
-    // When picker is being actively used, use its active id so IsItemActive() will function on ColorEdit4().
-    if (picker_active_window && g.ActiveId != 0 && g.ActiveIdWindow == picker_active_window)
-        window->DC.LastItemId = g.ActiveId;
-
-    if (value_changed)
-        MarkItemEdited(window->DC.LastItemId);
-
-    return value_changed;
-}
-
-bool ImGui::ColorPicker3(const char* label, float col[3], ImGuiColorEditFlags flags)
-{
-    float col4[4] = { col[0], col[1], col[2], 1.0f };
-    if (!ColorPicker4(label, col4, flags | ImGuiColorEditFlags_NoAlpha))
-        return false;
-    col[0] = col4[0]; col[1] = col4[1]; col[2] = col4[2];
-    return true;
-}
-
-static void RenderArrowsForVerticalBar(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, float bar_w)
-{
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x + 1,         pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Right, IM_COL32_BLACK);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x,             pos.y), half_sz,                              ImGuiDir_Right, IM_COL32_WHITE);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x - 1, pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Left,  IM_COL32_BLACK);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x,     pos.y), half_sz,                              ImGuiDir_Left,  IM_COL32_WHITE);
-}
-
-// ColorPicker
-// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-// FIXME: we adjust the big color square height based on item width, which may cause a flickering feedback loop (if automatic height makes a vertical scrollbar appears, affecting automatic width..)
-bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags flags, const float* ref_col)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    ImDrawList* draw_list = window->DrawList;
-
-    ImGuiStyle& style = g.Style;
-    ImGuiIO& io = g.IO;
-
-    PushID(label);
-    BeginGroup();
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-        flags |= ImGuiColorEditFlags_NoSmallPreview;
-
-    // Context menu: display and store options.
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-
-    // Read stored options
-    if (!(flags & ImGuiColorEditFlags__PickerMask))
-        flags |= ((g.ColorEditOptions & ImGuiColorEditFlags__PickerMask) ? g.ColorEditOptions : ImGuiColorEditFlags__OptionsDefault) & ImGuiColorEditFlags__PickerMask;
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask))); // Check that only 1 is selected
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags_AlphaBar);
-
-    // Setup
-    int components = (flags & ImGuiColorEditFlags_NoAlpha) ? 3 : 4;
-    bool alpha_bar = (flags & ImGuiColorEditFlags_AlphaBar) && !(flags & ImGuiColorEditFlags_NoAlpha);
-    ImVec2 picker_pos = window->DC.CursorPos;
-    float square_sz = GetFrameHeight();
-    float bars_width = square_sz; // Arbitrary smallish width of Hue/Alpha picking bars
-    float sv_picker_size = ImMax(bars_width * 1, CalcItemWidth() - (alpha_bar ? 2 : 1) * (bars_width + style.ItemInnerSpacing.x)); // Saturation/Value picking box
-    float bar0_pos_x = picker_pos.x + sv_picker_size + style.ItemInnerSpacing.x;
-    float bar1_pos_x = bar0_pos_x + bars_width + style.ItemInnerSpacing.x;
-    float bars_triangles_half_sz = (float)(int)(bars_width * 0.20f);
-
-    float backup_initial_col[4];
-    memcpy(backup_initial_col, col, components * sizeof(float));
-
-    float wheel_thickness = sv_picker_size * 0.08f;
-    float wheel_r_outer = sv_picker_size * 0.50f;
-    float wheel_r_inner = wheel_r_outer - wheel_thickness;
-    ImVec2 wheel_center(picker_pos.x + (sv_picker_size + bars_width)*0.5f, picker_pos.y + sv_picker_size*0.5f);
-
-    // Note: the triangle is displayed rotated with triangle_pa pointing to Hue, but most coordinates stays unrotated for logic.
-    float triangle_r = wheel_r_inner - (int)(sv_picker_size * 0.027f);
-    ImVec2 triangle_pa = ImVec2(triangle_r, 0.0f); // Hue point.
-    ImVec2 triangle_pb = ImVec2(triangle_r * -0.5f, triangle_r * -0.866025f); // Black point.
-    ImVec2 triangle_pc = ImVec2(triangle_r * -0.5f, triangle_r * +0.866025f); // White point.
-
-    float H,S,V;
-    ColorConvertRGBtoHSV(col[0], col[1], col[2], H, S, V);
-
-    bool value_changed = false, value_changed_h = false, value_changed_sv = false;
-
-    PushItemFlag(ImGuiItemFlags_NoNav, true);
-    if (flags & ImGuiColorEditFlags_PickerHueWheel)
-    {
-        // Hue wheel + SV triangle logic
-        InvisibleButton("hsv", ImVec2(sv_picker_size + style.ItemInnerSpacing.x + bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            ImVec2 initial_off = g.IO.MouseClickedPos[0] - wheel_center;
-            ImVec2 current_off = g.IO.MousePos - wheel_center;
-            float initial_dist2 = ImLengthSqr(initial_off);
-            if (initial_dist2 >= (wheel_r_inner-1)*(wheel_r_inner-1) && initial_dist2 <= (wheel_r_outer+1)*(wheel_r_outer+1))
-            {
-                // Interactive with Hue wheel
-                H = ImAtan2(current_off.y, current_off.x) / IM_PI*0.5f;
-                if (H < 0.0f)
-                    H += 1.0f;
-                value_changed = value_changed_h = true;
-            }
-            float cos_hue_angle = ImCos(-H * 2.0f * IM_PI);
-            float sin_hue_angle = ImSin(-H * 2.0f * IM_PI);
-            if (ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, ImRotate(initial_off, cos_hue_angle, sin_hue_angle)))
-            {
-                // Interacting with SV triangle
-                ImVec2 current_off_unrotated = ImRotate(current_off, cos_hue_angle, sin_hue_angle);
-                if (!ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated))
-                    current_off_unrotated = ImTriangleClosestPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated);
-                float uu, vv, ww;
-                ImTriangleBarycentricCoords(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated, uu, vv, ww);
-                V = ImClamp(1.0f - vv, 0.0001f, 1.0f);
-                S = ImClamp(uu / V, 0.0001f, 1.0f);
-                value_changed = value_changed_sv = true;
-            }
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-    }
-    else if (flags & ImGuiColorEditFlags_PickerHueBar)
-    {
-        // SV rectangle logic
-        InvisibleButton("sv", ImVec2(sv_picker_size, sv_picker_size));
-        if (IsItemActive())
-        {
-            S = ImSaturate((io.MousePos.x - picker_pos.x) / (sv_picker_size-1));
-            V = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = value_changed_sv = true;
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-
-        // Hue bar logic
-        SetCursorScreenPos(ImVec2(bar0_pos_x, picker_pos.y));
-        InvisibleButton("hue", ImVec2(bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            H = ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = value_changed_h = true;
-        }
-    }
-
-    // Alpha bar logic
-    if (alpha_bar)
-    {
-        SetCursorScreenPos(ImVec2(bar1_pos_x, picker_pos.y));
-        InvisibleButton("alpha", ImVec2(bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            col[3] = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = true;
-        }
-    }
-    PopItemFlag(); // ImGuiItemFlags_NoNav
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-    {
-        SameLine(0, style.ItemInnerSpacing.x);
-        BeginGroup();
-    }
-
-    if (!(flags & ImGuiColorEditFlags_NoLabel))
-    {
-        const char* label_display_end = FindRenderedTextEnd(label);
-        if (label != label_display_end)
-        {
-            if ((flags & ImGuiColorEditFlags_NoSidePreview))
-                SameLine(0, style.ItemInnerSpacing.x);
-            TextUnformatted(label, label_display_end);
-        }
-    }
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-    {
-        PushItemFlag(ImGuiItemFlags_NoNavDefaultFocus, true);
-        ImVec4 col_v4(col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
-        if ((flags & ImGuiColorEditFlags_NoLabel))
-            Text("Current");
-        ColorButton("##current", col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2));
-        if (ref_col != NULL)
-        {
-            Text("Original");
-            ImVec4 ref_col_v4(ref_col[0], ref_col[1], ref_col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : ref_col[3]);
-            if (ColorButton("##original", ref_col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2)))
-            {
-                memcpy(col, ref_col, components * sizeof(float));
-                value_changed = true;
-            }
-        }
-        PopItemFlag();
-        EndGroup();
-    }
-
-    // Convert back color to RGB
-    if (value_changed_h || value_changed_sv)
-        ColorConvertHSVtoRGB(H >= 1.0f ? H - 10 * 1e-6f : H, S > 0.0f ? S : 10*1e-6f, V > 0.0f ? V : 1e-6f, col[0], col[1], col[2]);
-
-    // R,G,B and H,S,V slider color editor
-    bool value_changed_fix_hue_wrap = false;
-    if ((flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        PushItemWidth((alpha_bar ? bar1_pos_x : bar0_pos_x) + bars_width - picker_pos.x);
-        ImGuiColorEditFlags sub_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoOptions | ImGuiColorEditFlags_NoSmallPreview | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf;
-        ImGuiColorEditFlags sub_flags = (flags & sub_flags_to_forward) | ImGuiColorEditFlags_NoPicker;
-        if (flags & ImGuiColorEditFlags_RGB || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            if (ColorEdit4("##rgb", col, sub_flags | ImGuiColorEditFlags_RGB))
-            {
-                // FIXME: Hackily differenciating using the DragInt (ActiveId != 0 && !ActiveIdAllowOverlap) vs. using the InputText or DropTarget.
-                // For the later we don't want to run the hue-wrap canceling code. If you are well versed in HSV picker please provide your input! (See #2050)
-                value_changed_fix_hue_wrap = (g.ActiveId != 0 && !g.ActiveIdAllowOverlap);
-                value_changed = true;
-            }
-        if (flags & ImGuiColorEditFlags_HSV || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            value_changed |= ColorEdit4("##hsv", col, sub_flags | ImGuiColorEditFlags_HSV);
-        if (flags & ImGuiColorEditFlags_HEX || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            value_changed |= ColorEdit4("##hex", col, sub_flags | ImGuiColorEditFlags_HEX);
-        PopItemWidth();
-    }
-
-    // Try to cancel hue wrap (after ColorEdit4 call), if any
-    if (value_changed_fix_hue_wrap)
-    {
-        float new_H, new_S, new_V;
-        ColorConvertRGBtoHSV(col[0], col[1], col[2], new_H, new_S, new_V);
-        if (new_H <= 0 && H > 0)
-        {
-            if (new_V <= 0 && V != new_V)
-                ColorConvertHSVtoRGB(H, S, new_V <= 0 ? V * 0.5f : new_V, col[0], col[1], col[2]);
-            else if (new_S <= 0)
-                ColorConvertHSVtoRGB(H, new_S <= 0 ? S * 0.5f : new_S, new_V, col[0], col[1], col[2]);
-        }
-    }
-
-    ImVec4 hue_color_f(1, 1, 1, 1); ColorConvertHSVtoRGB(H, 1, 1, hue_color_f.x, hue_color_f.y, hue_color_f.z);
-    ImU32 hue_color32 = ColorConvertFloat4ToU32(hue_color_f);
-    ImU32 col32_no_alpha = ColorConvertFloat4ToU32(ImVec4(col[0], col[1], col[2], 1.0f));
-
-    const ImU32 hue_colors[6+1] = { IM_COL32(255,0,0,255), IM_COL32(255,255,0,255), IM_COL32(0,255,0,255), IM_COL32(0,255,255,255), IM_COL32(0,0,255,255), IM_COL32(255,0,255,255), IM_COL32(255,0,0,255) };
-    ImVec2 sv_cursor_pos;
-
-    if (flags & ImGuiColorEditFlags_PickerHueWheel)
-    {
-        // Render Hue Wheel
-        const float aeps = 1.5f / wheel_r_outer; // Half a pixel arc length in radians (2pi cancels out).
-        const int segment_per_arc = ImMax(4, (int)wheel_r_outer / 12);
-        for (int n = 0; n < 6; n++)
-        {
-            const float a0 = (n)     /6.0f * 2.0f * IM_PI - aeps;
-            const float a1 = (n+1.0f)/6.0f * 2.0f * IM_PI + aeps;
-            const int vert_start_idx = draw_list->VtxBuffer.Size;
-            draw_list->PathArcTo(wheel_center, (wheel_r_inner + wheel_r_outer)*0.5f, a0, a1, segment_per_arc);
-            draw_list->PathStroke(IM_COL32_WHITE, false, wheel_thickness);
-            const int vert_end_idx = draw_list->VtxBuffer.Size;
-
-            // Paint colors over existing vertices
-            ImVec2 gradient_p0(wheel_center.x + ImCos(a0) * wheel_r_inner, wheel_center.y + ImSin(a0) * wheel_r_inner);
-            ImVec2 gradient_p1(wheel_center.x + ImCos(a1) * wheel_r_inner, wheel_center.y + ImSin(a1) * wheel_r_inner);
-            ShadeVertsLinearColorGradientKeepAlpha(draw_list, vert_start_idx, vert_end_idx, gradient_p0, gradient_p1, hue_colors[n], hue_colors[n+1]);
-        }
-
-        // Render Cursor + preview on Hue Wheel
-        float cos_hue_angle = ImCos(H * 2.0f * IM_PI);
-        float sin_hue_angle = ImSin(H * 2.0f * IM_PI);
-        ImVec2 hue_cursor_pos(wheel_center.x + cos_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f, wheel_center.y + sin_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f);
-        float hue_cursor_rad = value_changed_h ? wheel_thickness * 0.65f : wheel_thickness * 0.55f;
-        int hue_cursor_segments = ImClamp((int)(hue_cursor_rad / 1.4f), 9, 32);
-        draw_list->AddCircleFilled(hue_cursor_pos, hue_cursor_rad, hue_color32, hue_cursor_segments);
-        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad+1, IM_COL32(128,128,128,255), hue_cursor_segments);
-        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad, IM_COL32_WHITE, hue_cursor_segments);
-
-        // Render SV triangle (rotated according to hue)
-        ImVec2 tra = wheel_center + ImRotate(triangle_pa, cos_hue_angle, sin_hue_angle);
-        ImVec2 trb = wheel_center + ImRotate(triangle_pb, cos_hue_angle, sin_hue_angle);
-        ImVec2 trc = wheel_center + ImRotate(triangle_pc, cos_hue_angle, sin_hue_angle);
-        ImVec2 uv_white = GetFontTexUvWhitePixel();
-        draw_list->PrimReserve(6, 6);
-        draw_list->PrimVtx(tra, uv_white, hue_color32);
-        draw_list->PrimVtx(trb, uv_white, hue_color32);
-        draw_list->PrimVtx(trc, uv_white, IM_COL32_WHITE);
-        draw_list->PrimVtx(tra, uv_white, IM_COL32_BLACK_TRANS);
-        draw_list->PrimVtx(trb, uv_white, IM_COL32_BLACK);
-        draw_list->PrimVtx(trc, uv_white, IM_COL32_BLACK_TRANS);
-        draw_list->AddTriangle(tra, trb, trc, IM_COL32(128,128,128,255), 1.5f);
-        sv_cursor_pos = ImLerp(ImLerp(trc, tra, ImSaturate(S)), trb, ImSaturate(1 - V));
-    }
-    else if (flags & ImGuiColorEditFlags_PickerHueBar)
-    {
-        // Render SV Square
-        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_WHITE, hue_color32, hue_color32, IM_COL32_WHITE);
-        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_BLACK_TRANS, IM_COL32_BLACK_TRANS, IM_COL32_BLACK, IM_COL32_BLACK);
-        RenderFrameBorder(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), 0.0f);
-        sv_cursor_pos.x = ImClamp((float)(int)(picker_pos.x + ImSaturate(S)     * sv_picker_size + 0.5f), picker_pos.x + 2, picker_pos.x + sv_picker_size - 2); // Sneakily prevent the circle to stick out too much
-        sv_cursor_pos.y = ImClamp((float)(int)(picker_pos.y + ImSaturate(1 - V) * sv_picker_size + 0.5f), picker_pos.y + 2, picker_pos.y + sv_picker_size - 2);
-
-        // Render Hue Bar
-        for (int i = 0; i < 6; ++i)
-            draw_list->AddRectFilledMultiColor(ImVec2(bar0_pos_x, picker_pos.y + i * (sv_picker_size / 6)), ImVec2(bar0_pos_x + bars_width, picker_pos.y + (i + 1) * (sv_picker_size / 6)), hue_colors[i], hue_colors[i], hue_colors[i + 1], hue_colors[i + 1]);
-        float bar0_line_y = (float)(int)(picker_pos.y + H * sv_picker_size + 0.5f);
-        RenderFrameBorder(ImVec2(bar0_pos_x, picker_pos.y), ImVec2(bar0_pos_x + bars_width, picker_pos.y + sv_picker_size), 0.0f);
-        RenderArrowsForVerticalBar(draw_list, ImVec2(bar0_pos_x - 1, bar0_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
-    }
-
-    // Render cursor/preview circle (clamp S/V within 0..1 range because floating points colors may lead HSV values to be out of range)
-    float sv_cursor_rad = value_changed_sv ? 10.0f : 6.0f;
-    draw_list->AddCircleFilled(sv_cursor_pos, sv_cursor_rad, col32_no_alpha, 12);
-    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad+1, IM_COL32(128,128,128,255), 12);
-    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad, IM_COL32_WHITE, 12);
-
-    // Render alpha bar
-    if (alpha_bar)
-    {
-        float alpha = ImSaturate(col[3]);
-        ImRect bar1_bb(bar1_pos_x, picker_pos.y, bar1_pos_x + bars_width, picker_pos.y + sv_picker_size);
-        RenderColorRectWithAlphaCheckerboard(bar1_bb.Min, bar1_bb.Max, IM_COL32(0,0,0,0), bar1_bb.GetWidth() / 2.0f, ImVec2(0.0f, 0.0f));
-        draw_list->AddRectFilledMultiColor(bar1_bb.Min, bar1_bb.Max, col32_no_alpha, col32_no_alpha, col32_no_alpha & ~IM_COL32_A_MASK, col32_no_alpha & ~IM_COL32_A_MASK);
-        float bar1_line_y = (float)(int)(picker_pos.y + (1.0f - alpha) * sv_picker_size + 0.5f);
-        RenderFrameBorder(bar1_bb.Min, bar1_bb.Max, 0.0f);
-        RenderArrowsForVerticalBar(draw_list, ImVec2(bar1_pos_x - 1, bar1_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
-    }
-
-    EndGroup();
-
-    if (value_changed && memcmp(backup_initial_col, col, components * sizeof(float)) == 0)
-        value_changed = false;
-    if (value_changed)
-        MarkItemEdited(window->DC.LastItemId);
-
-    PopID();
-
-    return value_changed;
-}
-
 // Horizontal/vertical separating line
 void ImGui::Separator()
 {
@@ -13082,7 +6107,7 @@
     window->DrawList->AddLine(bb.Min, ImVec2(bb.Max.x,bb.Min.y), GetColorU32(ImGuiCol_Separator));
 
     if (g.LogEnabled)
-            LogRenderedText(NULL, IM_NEWLINE "--------------------------------");
+        LogRenderedText(NULL, IM_NEWLINE "--------------------------------");
 
     if (window->DC.ColumnsSet)
     {
@@ -13309,6 +6334,1457 @@
     window->DC.LayoutType = backup_layout_type;
 }
 
+void ImGui::Indent(float indent_w)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    window->DC.Indent.x += (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
+    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
+}
+
+void ImGui::Unindent(float indent_w)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    window->DC.Indent.x -= (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
+    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
+}
+
+//-----------------------------------------------------------------------------
+// TOOLTIPS
+//-----------------------------------------------------------------------------
+
+void ImGui::BeginTooltip()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.DragDropWithinSourceOrTarget)
+    {
+        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
+        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
+        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
+        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
+        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
+        SetNextWindowPos(tooltip_pos);
+        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
+        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
+        BeginTooltipEx(0, true);
+    }
+    else
+    {
+        BeginTooltipEx(0, false);
+    }
+}
+
+// Not exposed publicly as BeginTooltip() because bool parameters are evil. Let's see if other needs arise first.
+void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, bool override_previous_tooltip)
+{
+    ImGuiContext& g = *GImGui;
+    char window_name[16];
+    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
+    if (override_previous_tooltip)
+        if (ImGuiWindow* window = FindWindowByName(window_name))
+            if (window->Active)
+            {
+                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
+                window->Hidden = true;
+                window->HiddenFramesRegular = 1;
+                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
+            }
+    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoInputs|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoNav;
+    Begin(window_name, NULL, flags | extra_flags);
+}
+
+void ImGui::EndTooltip()
+{
+    IM_ASSERT(GetCurrentWindowRead()->Flags & ImGuiWindowFlags_Tooltip);   // Mismatched BeginTooltip()/EndTooltip() calls
+    End();
+}
+
+void ImGui::SetTooltipV(const char* fmt, va_list args)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.DragDropWithinSourceOrTarget)
+        BeginTooltip();
+    else
+        BeginTooltipEx(0, true);
+    TextV(fmt, args);
+    EndTooltip();
+}
+
+void ImGui::SetTooltip(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    SetTooltipV(fmt, args);
+    va_end(args);
+}
+
+//-----------------------------------------------------------------------------
+// POPUPS
+//-----------------------------------------------------------------------------
+
+bool ImGui::IsPopupOpen(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == id;
+}
+
+bool ImGui::IsPopupOpen(const char* str_id)
+{
+    ImGuiContext& g = *GImGui;
+    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == g.CurrentWindow->GetID(str_id);
+}
+
+ImGuiWindow* ImGui::GetFrontMostPopupModal()
+{
+    ImGuiContext& g = *GImGui;
+    for (int n = g.OpenPopupStack.Size-1; n >= 0; n--)
+        if (ImGuiWindow* popup = g.OpenPopupStack.Data[n].Window)
+            if (popup->Flags & ImGuiWindowFlags_Modal)
+                return popup;
+    return NULL;
+}
+
+void ImGui::OpenPopup(const char* str_id)
+{
+    ImGuiContext& g = *GImGui;
+    OpenPopupEx(g.CurrentWindow->GetID(str_id));
+}
+
+// Mark popup as open (toggle toward open state).
+// Popups are closed when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
+// Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
+// One open popup per level of the popup hierarchy (NB: when assigning we reset the Window member of ImGuiPopupRef to NULL)
+void ImGui::OpenPopupEx(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* parent_window = g.CurrentWindow;
+    int current_stack_size = g.CurrentPopupStack.Size;
+    ImGuiPopupRef popup_ref; // Tagged as new ref as Window will be set back to NULL if we write this into OpenPopupStack.
+    popup_ref.PopupId = id;
+    popup_ref.Window = NULL;
+    popup_ref.ParentWindow = parent_window;
+    popup_ref.OpenFrameCount = g.FrameCount;
+    popup_ref.OpenParentId = parent_window->IDStack.back();
+    popup_ref.OpenMousePos = g.IO.MousePos;
+    popup_ref.OpenPopupPos = NavCalcPreferredRefPos();
+
+    //printf("[%05d] OpenPopupEx(0x%08X)\n", g.FrameCount, id);
+    if (g.OpenPopupStack.Size < current_stack_size + 1)
+    {
+        g.OpenPopupStack.push_back(popup_ref);
+    }
+    else
+    {
+        // Gently handle the user mistakenly calling OpenPopup() every frame. It is a programming mistake! However, if we were to run the regular code path, the ui
+        // would become completely unusable because the popup will always be in hidden-while-calculating-size state _while_ claiming focus. Which would be a very confusing
+        // situation for the programmer. Instead, we silently allow the popup to proceed, it will keep reappearing and the programming error will be more obvious to understand.
+        if (g.OpenPopupStack[current_stack_size].PopupId == id && g.OpenPopupStack[current_stack_size].OpenFrameCount == g.FrameCount - 1)
+        {
+            g.OpenPopupStack[current_stack_size].OpenFrameCount = popup_ref.OpenFrameCount;
+        }
+        else
+        {
+            // Close child popups if any, then flag popup for open/reopen
+            g.OpenPopupStack.resize(current_stack_size + 1);
+            g.OpenPopupStack[current_stack_size] = popup_ref;
+        }
+
+        // When reopening a popup we first refocus its parent, otherwise if its parent is itself a popup it would get closed by ClosePopupsOverWindow().
+        // This is equivalent to what ClosePopupToLevel() does.
+        //if (g.OpenPopupStack[current_stack_size].PopupId == id)
+        //    FocusWindow(parent_window);
+    }
+}
+
+bool ImGui::OpenPopupOnItemClick(const char* str_id, int mouse_button)
+{
+    ImGuiWindow* window = GImGui->CurrentWindow;
+    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+    {
+        ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
+        IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
+        OpenPopupEx(id);
+        return true;
+    }
+    return false;
+}
+
+void ImGui::ClosePopupsOverWindow(ImGuiWindow* ref_window)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.OpenPopupStack.empty())
+        return;
+
+    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
+    // Don't close our own child popup windows.
+    int n = 0;
+    if (ref_window)
+    {
+        for (n = 0; n < g.OpenPopupStack.Size; n++)
+        {
+            ImGuiPopupRef& popup = g.OpenPopupStack[n];
+            if (!popup.Window)
+                continue;
+            IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
+            if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
+                continue;
+
+            // Trim the stack if popups are not direct descendant of the reference window (which is often the NavWindow)
+            bool has_focus = false;
+            for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
+                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
+            if (!has_focus)
+                break;
+        }
+    }
+    if (n < g.OpenPopupStack.Size) // This test is not required but it allows to set a convenient breakpoint on the block below
+        ClosePopupToLevel(n);
+}
+
+void ImGui::ClosePopupToLevel(int remaining)
+{
+    IM_ASSERT(remaining >= 0);
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* focus_window = (remaining > 0) ? g.OpenPopupStack[remaining-1].Window : g.OpenPopupStack[0].ParentWindow;
+    if (g.NavLayer == 0)
+        focus_window = NavRestoreLastChildNavWindow(focus_window);
+    FocusWindow(focus_window);
+    focus_window->DC.NavHideHighlightOneFrame = true;
+    g.OpenPopupStack.resize(remaining);
+}
+
+void ImGui::ClosePopup(ImGuiID id)
+{
+    if (!IsPopupOpen(id))
+        return;
+    ImGuiContext& g = *GImGui;
+    ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+}
+
+// Close the popup we have begin-ed into.
+void ImGui::CloseCurrentPopup()
+{
+    ImGuiContext& g = *GImGui;
+    int popup_idx = g.CurrentPopupStack.Size - 1;
+    if (popup_idx < 0 || popup_idx >= g.OpenPopupStack.Size || g.CurrentPopupStack[popup_idx].PopupId != g.OpenPopupStack[popup_idx].PopupId)
+        return;
+    while (popup_idx > 0 && g.OpenPopupStack[popup_idx].Window && (g.OpenPopupStack[popup_idx].Window->Flags & ImGuiWindowFlags_ChildMenu))
+        popup_idx--;
+    ClosePopupToLevel(popup_idx);
+}
+
+bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (!IsPopupOpen(id))
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+
+    char name[20];
+    if (extra_flags & ImGuiWindowFlags_ChildMenu)
+        ImFormatString(name, IM_ARRAYSIZE(name), "##Menu_%02d", g.CurrentPopupStack.Size);    // Recycle windows based on depth
+    else
+        ImFormatString(name, IM_ARRAYSIZE(name), "##Popup_%08x", id); // Not recycling, so we can close/open during the same frame
+
+    bool is_open = Begin(name, NULL, extra_flags | ImGuiWindowFlags_Popup);
+    if (!is_open) // NB: Begin can return false when the popup is completely clipped (e.g. zero size display)
+        EndPopup();
+
+    return is_open;
+}
+
+bool ImGui::BeginPopup(const char* str_id, ImGuiWindowFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.OpenPopupStack.Size <= g.CurrentPopupStack.Size) // Early out for performance
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+    return BeginPopupEx(g.CurrentWindow->GetID(str_id), flags|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    const ImGuiID id = window->GetID(name);
+    if (!IsPopupOpen(id))
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+
+    // Center modal windows by default
+    // FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
+    if (g.NextWindowData.PosCond == 0)
+        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
+
+    bool is_open = Begin(name, p_open, flags | ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
+    if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
+    {
+        EndPopup();
+        if (is_open)
+            ClosePopup(id);
+        return false;
+    }
+    return is_open;
+}
+
+void ImGui::EndPopup()
+{
+    ImGuiContext& g = *GImGui; (void)g;
+    IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup);  // Mismatched BeginPopup()/EndPopup() calls
+    IM_ASSERT(g.CurrentPopupStack.Size > 0);
+
+    // Make all menus and popups wrap around for now, may need to expose that policy.
+    NavMoveRequestTryWrapping(g.CurrentWindow, ImGuiNavMoveFlags_LoopY);
+
+    End();
+}
+
+// This is a helper to handle the simplest case of associating one named popup to one given widget.
+// You may want to handle this on user side if you have specific needs (e.g. tweaking IsItemHovered() parameters).
+// You can pass a NULL str_id to use the identifier of the last item.
+bool ImGui::BeginPopupContextItem(const char* str_id, int mouse_button)
+{
+    ImGuiWindow* window = GImGui->CurrentWindow;
+    ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
+    IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
+    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+        OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupContextWindow(const char* str_id, int mouse_button, bool also_over_items)
+{
+    if (!str_id)
+        str_id = "window_context";
+    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
+    if (IsMouseReleased(mouse_button) && IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+        if (also_over_items || !IsAnyItemHovered())
+            OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupContextVoid(const char* str_id, int mouse_button)
+{
+    if (!str_id)
+        str_id = "void_context";
+    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
+    if (IsMouseReleased(mouse_button) && !IsWindowHovered(ImGuiHoveredFlags_AnyWindow))
+        OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+ImRect ImGui::GetWindowAllowedExtentRect(ImGuiWindow*)
+{
+    ImVec2 padding = GImGui->Style.DisplaySafeAreaPadding;
+    ImRect r_screen = GetViewportRect();
+    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
+    return r_screen;
+}
+
+// r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
+// r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
+ImVec2 ImGui::FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy)
+{
+    ImVec2 base_pos_clamped = ImClamp(ref_pos, r_outer.Min, r_outer.Max - size);
+    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
+    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
+
+    // Combo Box policy (we want a connecting edge)
+    if (policy == ImGuiPopupPositionPolicy_ComboBox)
+    {
+        const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Down, ImGuiDir_Right, ImGuiDir_Left, ImGuiDir_Up };
+        for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
+        {
+            const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+            if (n != -1 && dir == *last_dir) // Already tried this direction?
+                continue;
+            ImVec2 pos;
+            if (dir == ImGuiDir_Down)  pos = ImVec2(r_avoid.Min.x, r_avoid.Max.y);          // Below, Toward Right (default)
+            if (dir == ImGuiDir_Right) pos = ImVec2(r_avoid.Min.x, r_avoid.Min.y - size.y); // Above, Toward Right
+            if (dir == ImGuiDir_Left)  pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Max.y); // Below, Toward Left
+            if (dir == ImGuiDir_Up)    pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Min.y - size.y); // Above, Toward Left
+            if (!r_outer.Contains(ImRect(pos, pos + size)))
+                continue;
+            *last_dir = dir;
+            return pos;
+        }
+    }
+
+    // Default popup policy
+    const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
+    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
+    {
+        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+        if (n != -1 && dir == *last_dir) // Already tried this direction?
+            continue;
+        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
+        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
+        if (avail_w < size.x || avail_h < size.y)
+            continue;
+        ImVec2 pos;
+        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
+        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
+        *last_dir = dir;
+        return pos;
+    }
+
+    // Fallback, try to keep within display
+    *last_dir = ImGuiDir_None;
+    ImVec2 pos = ref_pos;
+    pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
+    pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
+    return pos;
+}
+
+ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+
+    ImRect r_outer = GetWindowAllowedExtentRect(window);
+    if (window->Flags & ImGuiWindowFlags_ChildMenu)
+    {
+        // Child menus typically request _any_ position within the parent menu item, and then our FindBestWindowPosForPopup() function will move the new menu outside the parent bounds.
+        // This is how we end up with child menus appearing (most-commonly) on the right of the parent menu.
+        IM_ASSERT(g.CurrentWindow == window);
+        ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.Size - 2];
+        float horizontal_overlap = g.Style.ItemSpacing.x;       // We want some overlap to convey the relative depth of each menu (currently the amount of overlap is hard-coded to style.ItemSpacing.x).
+        ImRect r_avoid;
+        if (parent_window->DC.MenuBarAppending)
+            r_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
+        else
+            r_avoid = ImRect(parent_window->Pos.x + horizontal_overlap, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - horizontal_overlap - parent_window->ScrollbarSizes.x, FLT_MAX);
+        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+    }
+    if (window->Flags & ImGuiWindowFlags_Popup)
+    {
+        ImRect r_avoid = ImRect(window->Pos.x - 1, window->Pos.y - 1, window->Pos.x + 1, window->Pos.y + 1);
+        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+    }
+    if (window->Flags & ImGuiWindowFlags_Tooltip)
+    {
+        // Position tooltip (always follows mouse)
+        float sc = g.Style.MouseCursorScale;
+        ImVec2 ref_pos = NavCalcPreferredRefPos();
+        ImRect r_avoid;
+        if (!g.NavDisableHighlight && g.NavDisableMouseHover && !(g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos))
+            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 16, ref_pos.y + 8);
+        else
+            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24 * sc, ref_pos.y + 24 * sc); // FIXME: Hard-coded based on mouse cursor shape expectation. Exact dimension not very important.
+        ImVec2 pos = FindBestWindowPosForPopupEx(ref_pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+        if (window->AutoPosLastDirection == ImGuiDir_None)
+            pos = ref_pos + ImVec2(2, 2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
+        return pos;
+    }
+    IM_ASSERT(0);
+    return window->Pos;
+}
+
+//-----------------------------------------------------------------------------
+// NAVIGATION
+//-----------------------------------------------------------------------------
+
+static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
+{
+    if (ImFabs(dx) > ImFabs(dy))
+        return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
+    return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
+}
+
+static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
+{
+    if (a1 < b0)
+        return a1 - b0;
+    if (b1 < a0)
+        return a0 - b1;
+    return 0.0f;
+}
+
+static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
+{
+    if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
+    {
+        r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
+        r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
+    }
+    else
+    {
+        r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
+        r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
+    }
+}
+
+// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
+static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    if (g.NavLayer != window->DC.NavLayerCurrent)
+        return false;
+
+    const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
+    g.NavScoringCount++;
+
+    // When entering through a NavFlattened border, we consider child window items as fully clipped for scoring
+    if (window->ParentWindow == g.NavWindow)
+    {
+        IM_ASSERT((window->Flags | g.NavWindow->Flags) & ImGuiWindowFlags_NavFlattened);
+        if (!window->ClipRect.Contains(cand))
+            return false;
+        cand.ClipWithFull(window->ClipRect); // This allows the scored item to not overlap other candidates in the parent window
+    }
+
+    // We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
+    // For example, this ensure that items in one column are not reached when moving vertically from items in another column.
+    NavClampRectToVisibleAreaForMoveDir(g.NavMoveClipDir, cand, window->ClipRect);
+
+    // Compute distance between boxes
+    // FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
+    float dbx = NavScoreItemDistInterval(cand.Min.x, cand.Max.x, curr.Min.x, curr.Max.x);
+    float dby = NavScoreItemDistInterval(ImLerp(cand.Min.y, cand.Max.y, 0.2f), ImLerp(cand.Min.y, cand.Max.y, 0.8f), ImLerp(curr.Min.y, curr.Max.y, 0.2f), ImLerp(curr.Min.y, curr.Max.y, 0.8f)); // Scale down on Y to keep using box-distance for vertically touching items
+    if (dby != 0.0f && dbx != 0.0f)
+       dbx = (dbx/1000.0f) + ((dbx > 0.0f) ? +1.0f : -1.0f);
+    float dist_box = ImFabs(dbx) + ImFabs(dby);
+
+    // Compute distance between centers (this is off by a factor of 2, but we only compare center distances with each other so it doesn't matter)
+    float dcx = (cand.Min.x + cand.Max.x) - (curr.Min.x + curr.Max.x);
+    float dcy = (cand.Min.y + cand.Max.y) - (curr.Min.y + curr.Max.y);
+    float dist_center = ImFabs(dcx) + ImFabs(dcy); // L1 metric (need this for our connectedness guarantee)
+
+    // Determine which quadrant of 'curr' our candidate item 'cand' lies in based on distance
+    ImGuiDir quadrant;
+    float dax = 0.0f, day = 0.0f, dist_axial = 0.0f;
+    if (dbx != 0.0f || dby != 0.0f)
+    {
+        // For non-overlapping boxes, use distance between boxes
+        dax = dbx;
+        day = dby;
+        dist_axial = dist_box;
+        quadrant = NavScoreItemGetQuadrant(dbx, dby);
+    }
+    else if (dcx != 0.0f || dcy != 0.0f)
+    {
+        // For overlapping boxes with different centers, use distance between centers
+        dax = dcx;
+        day = dcy;
+        dist_axial = dist_center;
+        quadrant = NavScoreItemGetQuadrant(dcx, dcy);
+    }
+    else
+    {
+        // Degenerate case: two overlapping buttons with same center, break ties arbitrarily (note that LastItemId here is really the _previous_ item order, but it doesn't matter)
+        quadrant = (window->DC.LastItemId < g.NavId) ? ImGuiDir_Left : ImGuiDir_Right;
+    }
+
+#if IMGUI_DEBUG_NAV_SCORING
+    char buf[128];
+    if (ImGui::IsMouseHoveringRect(cand.Min, cand.Max))
+    {
+        ImFormatString(buf, IM_ARRAYSIZE(buf), "dbox (%.2f,%.2f->%.4f)\ndcen (%.2f,%.2f->%.4f)\nd (%.2f,%.2f->%.4f)\nnav %c, quadrant %c", dbx, dby, dist_box, dcx, dcy, dist_center, dax, day, dist_axial, "WENS"[g.NavMoveDir], "WENS"[quadrant]);
+        ImDrawList* draw_list = ImGui::GetOverlayDrawList();
+        draw_list->AddRect(curr.Min, curr.Max, IM_COL32(255,200,0,100));
+        draw_list->AddRect(cand.Min, cand.Max, IM_COL32(255,255,0,200));
+        draw_list->AddRectFilled(cand.Max-ImVec2(4,4), cand.Max+ImGui::CalcTextSize(buf)+ImVec2(4,4), IM_COL32(40,0,0,150));
+        draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Max, ~0U, buf);
+    }
+    else if (g.IO.KeyCtrl) // Hold to preview score in matching quadrant. Press C to rotate.
+    {
+        if (IsKeyPressedMap(ImGuiKey_C)) { g.NavMoveDirLast = (ImGuiDir)((g.NavMoveDirLast + 1) & 3); g.IO.KeysDownDuration[g.IO.KeyMap[ImGuiKey_C]] = 0.01f; }
+        if (quadrant == g.NavMoveDir)
+        {
+            ImFormatString(buf, IM_ARRAYSIZE(buf), "%.0f/%.0f", dist_box, dist_center);
+            ImDrawList* draw_list = ImGui::GetOverlayDrawList();
+            draw_list->AddRectFilled(cand.Min, cand.Max, IM_COL32(255, 0, 0, 200));
+            draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Min, IM_COL32(255, 255, 255, 255), buf);
+        }
+    }
+ #endif
+
+    // Is it in the quadrant we're interesting in moving to?
+    bool new_best = false;
+    if (quadrant == g.NavMoveDir)
+    {
+        // Does it beat the current best candidate?
+        if (dist_box < result->DistBox)
+        {
+            result->DistBox = dist_box;
+            result->DistCenter = dist_center;
+            return true;
+        }
+        if (dist_box == result->DistBox)
+        {
+            // Try using distance between center points to break ties
+            if (dist_center < result->DistCenter)
+            {
+                result->DistCenter = dist_center;
+                new_best = true;
+            }
+            else if (dist_center == result->DistCenter)
+            {
+                // Still tied! we need to be extra-careful to make sure everything gets linked properly. We consistently break ties by symbolically moving "later" items
+                // (with higher index) to the right/downwards by an infinitesimal amount since we the current "best" button already (so it must have a lower index),
+                // this is fairly easy. This rule ensures that all buttons with dx==dy==0 will end up being linked in order of appearance along the x axis.
+                if (((g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down) ? dby : dbx) < 0.0f) // moving bj to the right/down decreases distance
+                    new_best = true;
+            }
+        }
+    }
+
+    // Axial check: if 'curr' has no link at all in some direction and 'cand' lies roughly in that direction, add a tentative link. This will only be kept if no "real" matches
+    // are found, so it only augments the graph produced by the above method using extra links. (important, since it doesn't guarantee strong connectedness)
+    // This is just to avoid buttons having no links in a particular direction when there's a suitable neighbor. you get good graphs without this too.
+    // 2017/09/29: FIXME: This now currently only enabled inside menu bars, ideally we'd disable it everywhere. Menus in particular need to catch failure. For general navigation it feels awkward.
+    // Disabling it may lead to disconnected graphs when nodes are very spaced out on different axis. Perhaps consider offering this as an option?
+    if (result->DistBox == FLT_MAX && dist_axial < result->DistAxial)  // Check axial match
+        if (g.NavLayer == 1 && !(g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
+            if ((g.NavMoveDir == ImGuiDir_Left && dax < 0.0f) || (g.NavMoveDir == ImGuiDir_Right && dax > 0.0f) || (g.NavMoveDir == ImGuiDir_Up && day < 0.0f) || (g.NavMoveDir == ImGuiDir_Down && day > 0.0f))
+            {
+                result->DistAxial = dist_axial;
+                new_best = true;
+            }
+
+    return new_best;
+}
+
+// We get there when either NavId == id, or when g.NavAnyRequest is set (which is updated by NavUpdateAnyRequestFlag above)
+static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    //if (!g.IO.NavActive)  // [2017/10/06] Removed this possibly redundant test but I am not sure of all the side-effects yet. Some of the feature here will need to work regardless of using a _NoNavInputs flag.
+    //    return;
+
+    const ImGuiItemFlags item_flags = window->DC.ItemFlags;
+    const ImRect nav_bb_rel(nav_bb.Min - window->Pos, nav_bb.Max - window->Pos);
+
+    // Process Init Request
+    if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
+    {
+        // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
+        {
+            g.NavInitResultId = id;
+            g.NavInitResultRectRel = nav_bb_rel;
+        }
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
+        {
+            g.NavInitRequest = false; // Found a match, clear request
+            NavUpdateAnyRequestFlag();
+        }
+    }
+
+    // Process Move Request (scoring for navigation)
+    // FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
+    if ((g.NavId != id || (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AllowCurrentNavId)) && !(item_flags & ImGuiItemFlags_NoNav))
+    {
+        ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
+#if IMGUI_DEBUG_NAV_SCORING
+        // [DEBUG] Score all items in NavWindow at all times
+        if (!g.NavMoveRequest)
+            g.NavMoveDir = g.NavMoveDirLast;
+        bool new_best = NavScoreItem(result, nav_bb) && g.NavMoveRequest;
+#else
+        bool new_best = g.NavMoveRequest && NavScoreItem(result, nav_bb);
+#endif
+        if (new_best)
+        {
+            result->ID = id;
+            result->Window = window;
+            result->RectRel = nav_bb_rel;
+        }
+
+        const float VISIBLE_RATIO = 0.70f;
+        if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
+            if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
+                if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
+                {
+                    result = &g.NavMoveResultLocalVisibleSet;
+                    result->ID = id;
+                    result->Window = window;
+                    result->RectRel = nav_bb_rel;
+                }
+    }
+
+    // Update window-relative bounding box of navigated item
+    if (g.NavId == id)
+    {
+        g.NavWindow = window;                                           // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
+        g.NavLayer = window->DC.NavLayerCurrent;
+        g.NavIdIsAlive = true;
+        g.NavIdTabCounter = window->FocusIdxTabCounter;
+        window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel;    // Store item bounding box (relative to window position)
+    }
+}
+
+bool ImGui::NavMoveRequestButNoResultYet()
+{
+    ImGuiContext& g = *GImGui;
+    return g.NavMoveRequest && g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0;
+}
+
+void ImGui::NavMoveRequestCancel()
+{
+    ImGuiContext& g = *GImGui;
+    g.NavMoveRequest = false;
+    NavUpdateAnyRequestFlag();
+}
+
+void ImGui::NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, const ImRect& bb_rel, ImGuiNavMoveFlags move_flags)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_None);
+    ImGui::NavMoveRequestCancel();
+    g.NavMoveDir = move_dir;
+    g.NavMoveClipDir = clip_dir;
+    g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
+    g.NavMoveRequestFlags = move_flags;
+    g.NavWindow->NavRectRel[g.NavLayer] = bb_rel;
+}
+
+void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavWindow != window || !NavMoveRequestButNoResultYet() || g.NavMoveRequestForward != ImGuiNavForward_None || g.NavLayer != 0)
+        return;
+    IM_ASSERT(move_flags != 0); // No points calling this with no wrapping
+    ImRect bb_rel = window->NavRectRel[0];
+
+    ImGuiDir clip_dir = g.NavMoveDir;
+    if (g.NavMoveDir == ImGuiDir_Left && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
+    {
+        bb_rel.Min.x = bb_rel.Max.x = ImMax(window->SizeFull.x, window->SizeContents.x) - window->Scroll.x;
+        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(-bb_rel.GetHeight()); clip_dir = ImGuiDir_Up; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Right && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
+    {
+        bb_rel.Min.x = bb_rel.Max.x = -window->Scroll.x;
+        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(+bb_rel.GetHeight()); clip_dir = ImGuiDir_Down; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Up && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
+    {
+        bb_rel.Min.y = bb_rel.Max.y = ImMax(window->SizeFull.y, window->SizeContents.y) - window->Scroll.y;
+        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(-bb_rel.GetWidth()); clip_dir = ImGuiDir_Left; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Down && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
+    {
+        bb_rel.Min.y = bb_rel.Max.y = -window->Scroll.y;
+        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(+bb_rel.GetWidth()); clip_dir = ImGuiDir_Right; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+}
+
+static void ImGui::NavSaveLastChildNavWindow(ImGuiWindow* nav_window)
+{
+    ImGuiWindow* parent_window = nav_window;
+    while (parent_window && (parent_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (parent_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
+        parent_window = parent_window->ParentWindow;
+    if (parent_window && parent_window != nav_window)
+        parent_window->NavLastChildNavWindow = nav_window;
+}
+
+// Call when we are expected to land on Layer 0 after FocusWindow()
+static ImGuiWindow* ImGui::NavRestoreLastChildNavWindow(ImGuiWindow* window)
+{
+    return window->NavLastChildNavWindow ? window->NavLastChildNavWindow : window;
+}
+
+static void NavRestoreLayer(int layer)
+{
+    ImGuiContext& g = *GImGui;
+    g.NavLayer = layer;
+    if (layer == 0)
+        g.NavWindow = ImGui::NavRestoreLastChildNavWindow(g.NavWindow);
+    if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
+        ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
+    else
+        ImGui::NavInitWindow(g.NavWindow, true);
+}
+
+static inline void ImGui::NavUpdateAnyRequestFlag()
+{
+    ImGuiContext& g = *GImGui;
+    g.NavAnyRequest = g.NavMoveRequest || g.NavInitRequest || (IMGUI_DEBUG_NAV_SCORING && g.NavWindow != NULL);
+    if (g.NavAnyRequest)
+        IM_ASSERT(g.NavWindow != NULL);
+}
+
+// This needs to be called before we submit any widget (aka in or before Begin)
+void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(window == g.NavWindow);
+    bool init_for_nav = false;
+    if (!(window->Flags & ImGuiWindowFlags_NoNavInputs))
+        if (!(window->Flags & ImGuiWindowFlags_ChildWindow) || (window->Flags & ImGuiWindowFlags_Popup) || (window->NavLastIds[0] == 0) || force_reinit)
+            init_for_nav = true;
+    if (init_for_nav)
+    {
+        SetNavID(0, g.NavLayer);
+        g.NavInitRequest = true;
+        g.NavInitRequestFromMove = false;
+        g.NavInitResultId = 0;
+        g.NavInitResultRectRel = ImRect();
+        NavUpdateAnyRequestFlag();
+    }
+    else
+    {
+        g.NavId = window->NavLastIds[0];
+    }
+}
+
+static ImVec2 ImGui::NavCalcPreferredRefPos()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow)
+        return ImFloor(g.IO.MousePos);
+
+    // When navigation is active and mouse is disabled, decide on an arbitrary position around the bottom left of the currently navigated item
+    const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
+    ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x*4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
+    ImRect visible_rect = GetViewportRect();
+    return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
+}
+
+float ImGui::GetNavInputAmount(ImGuiNavInput n, ImGuiInputReadMode mode)
+{
+    ImGuiContext& g = *GImGui;
+    if (mode == ImGuiInputReadMode_Down)
+        return g.IO.NavInputs[n];                         // Instant, read analog input (0.0f..1.0f, as provided by user)
+
+    const float t = g.IO.NavInputsDownDuration[n];
+    if (t < 0.0f && mode == ImGuiInputReadMode_Released)  // Return 1.0f when just released, no repeat, ignore analog input.
+        return (g.IO.NavInputsDownDurationPrev[n] >= 0.0f ? 1.0f : 0.0f);
+    if (t < 0.0f)
+        return 0.0f;
+    if (mode == ImGuiInputReadMode_Pressed)               // Return 1.0f when just pressed, no repeat, ignore analog input.
+        return (t == 0.0f) ? 1.0f : 0.0f;
+    if (mode == ImGuiInputReadMode_Repeat)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
+    if (mode == ImGuiInputReadMode_RepeatSlow)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 1.00f, g.IO.KeyRepeatRate * 2.00f);
+    if (mode == ImGuiInputReadMode_RepeatFast)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.30f);
+    return 0.0f;
+}
+
+ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor, float fast_factor)
+{
+    ImVec2 delta(0.0f, 0.0f);
+    if (dir_sources & ImGuiNavDirSourceFlags_Keyboard)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_KeyRight_, mode)   - GetNavInputAmount(ImGuiNavInput_KeyLeft_,   mode), GetNavInputAmount(ImGuiNavInput_KeyDown_,   mode) - GetNavInputAmount(ImGuiNavInput_KeyUp_,   mode));
+    if (dir_sources & ImGuiNavDirSourceFlags_PadDPad)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_DpadRight, mode)   - GetNavInputAmount(ImGuiNavInput_DpadLeft,   mode), GetNavInputAmount(ImGuiNavInput_DpadDown,   mode) - GetNavInputAmount(ImGuiNavInput_DpadUp,   mode));
+    if (dir_sources & ImGuiNavDirSourceFlags_PadLStick)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_LStickRight, mode) - GetNavInputAmount(ImGuiNavInput_LStickLeft, mode), GetNavInputAmount(ImGuiNavInput_LStickDown, mode) - GetNavInputAmount(ImGuiNavInput_LStickUp, mode));
+    if (slow_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakSlow))
+        delta *= slow_factor;
+    if (fast_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakFast))
+        delta *= fast_factor;
+    return delta;
+}
+
+// Scroll to keep newly navigated item fully into view
+// NB: We modify rect_rel by the amount we scrolled for, so it is immediately updated.
+static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item_rect)
+{
+    ImRect window_rect(window->InnerMainRect.Min - ImVec2(1, 1), window->InnerMainRect.Max + ImVec2(1, 1));
+    //g.OverlayDrawList.AddRect(window_rect.Min, window_rect.Max, IM_COL32_WHITE); // [DEBUG]
+    if (window_rect.Contains(item_rect))
+        return;
+
+    ImGuiContext& g = *GImGui;
+    if (window->ScrollbarX && item_rect.Min.x < window_rect.Min.x)
+    {
+        window->ScrollTarget.x = item_rect.Min.x - window->Pos.x + window->Scroll.x - g.Style.ItemSpacing.x;
+        window->ScrollTargetCenterRatio.x = 0.0f;
+    }
+    else if (window->ScrollbarX && item_rect.Max.x >= window_rect.Max.x)
+    {
+        window->ScrollTarget.x = item_rect.Max.x - window->Pos.x + window->Scroll.x + g.Style.ItemSpacing.x;
+        window->ScrollTargetCenterRatio.x = 1.0f;
+    }
+    if (item_rect.Min.y < window_rect.Min.y)
+    {
+        window->ScrollTarget.y = item_rect.Min.y - window->Pos.y + window->Scroll.y - g.Style.ItemSpacing.y;
+        window->ScrollTargetCenterRatio.y = 0.0f;
+    }
+    else if (item_rect.Max.y >= window_rect.Max.y)
+    {
+        window->ScrollTarget.y = item_rect.Max.y - window->Pos.y + window->Scroll.y + g.Style.ItemSpacing.y;
+        window->ScrollTargetCenterRatio.y = 1.0f;
+    }
+}
+
+static void ImGui::NavUpdate()
+{
+    ImGuiContext& g = *GImGui;
+    g.IO.WantSetMousePos = false;
+#if 0
+    if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
+#endif
+
+    // Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
+    bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
+    bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
+    if (nav_gamepad_active)
+        if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
+            g.NavInputSource = ImGuiInputSource_NavGamepad;
+
+    // Update Keyboard->Nav inputs mapping
+    if (nav_keyboard_active)
+    {
+        #define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
+        NAV_MAP_KEY(ImGuiKey_Space,     ImGuiNavInput_Activate );
+        NAV_MAP_KEY(ImGuiKey_Enter,     ImGuiNavInput_Input    );
+        NAV_MAP_KEY(ImGuiKey_Escape,    ImGuiNavInput_Cancel   );
+        NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
+        NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
+        NAV_MAP_KEY(ImGuiKey_UpArrow,   ImGuiNavInput_KeyUp_   );
+        NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
+        if (g.IO.KeyCtrl)   g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
+        if (g.IO.KeyShift)  g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
+        if (g.IO.KeyAlt)    g.IO.NavInputs[ImGuiNavInput_KeyMenu_]  = 1.0f;
+        #undef NAV_MAP_KEY
+    }
+    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
+    for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
+        g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
+
+    // Process navigation init request (select first/default focus)
+    if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
+    {
+        // Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
+        IM_ASSERT(g.NavWindow);
+        if (g.NavInitRequestFromMove)
+            SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
+        else
+            SetNavID(g.NavInitResultId, g.NavLayer);
+        g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
+    }
+    g.NavInitRequest = false;
+    g.NavInitRequestFromMove = false;
+    g.NavInitResultId = 0;
+    g.NavJustMovedToId = 0;
+
+    // Process navigation move request
+    if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
+        NavUpdateMoveResult();
+
+    // When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
+    if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
+    {
+        IM_ASSERT(g.NavMoveRequest);
+        if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
+            g.NavDisableHighlight = false;
+        g.NavMoveRequestForward = ImGuiNavForward_None;
+    }
+
+    // Apply application mouse position movement, after we had a chance to process move request result.
+    if (g.NavMousePosDirty && g.NavIdIsAlive)
+    {
+        // Set mouse position given our knowledge of the navigated item position from last frame
+        if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
+        {
+            if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
+            {
+                g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
+                g.IO.WantSetMousePos = true;
+            }
+        }
+        g.NavMousePosDirty = false;
+    }
+    g.NavIdIsAlive = false;
+    g.NavJustTabbedId = 0;
+    IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
+
+    // Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
+    if (g.NavWindow)
+        NavSaveLastChildNavWindow(g.NavWindow);
+    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
+        g.NavWindow->NavLastChildNavWindow = NULL;
+
+    // Update CTRL+TAB and Windowing features (hold Square to move/resize/etc.)
+    NavUpdateWindowing();
+
+    // Set output flags for user application
+    g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
+    g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
+
+    // Process NavCancel input (to close a popup, get back to parent, clear focus)
+    if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
+    {
+        if (g.ActiveId != 0)
+        {
+            ClearActiveID();
+        }
+        else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
+        {
+            // Exit child window
+            ImGuiWindow* child_window = g.NavWindow;
+            ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
+            IM_ASSERT(child_window->ChildId != 0);
+            FocusWindow(parent_window);
+            SetNavID(child_window->ChildId, 0);
+            g.NavIdIsAlive = false;
+            if (g.NavDisableMouseHover)
+                g.NavMousePosDirty = true;
+        }
+        else if (g.OpenPopupStack.Size > 0)
+        {
+            // Close open popup/menu
+            if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
+                ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+        }
+        else if (g.NavLayer != 0)
+        {
+            // Leave the "menu" layer
+            NavRestoreLayer(0);
+        }
+        else
+        {
+            // Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
+            if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
+                g.NavWindow->NavLastIds[0] = 0;
+            g.NavId = 0;
+        }
+    }
+
+    // Process manual activation request
+    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
+    if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+    {
+        bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
+        bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
+        if (g.ActiveId == 0 && activate_pressed)
+            g.NavActivateId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
+            g.NavActivateDownId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
+            g.NavActivatePressedId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
+            g.NavInputId = g.NavId;
+    }
+    if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+        g.NavDisableHighlight = true;
+    if (g.NavActivateId != 0)
+        IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
+    g.NavMoveRequest = false;
+
+    // Process programmatic activation request
+    if (g.NavNextActivateId != 0)
+        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
+    g.NavNextActivateId = 0;
+
+    // Initiate directional inputs request
+    const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
+    if (g.NavMoveRequestForward == ImGuiNavForward_None)
+    {
+        g.NavMoveDir = ImGuiDir_None;
+        g.NavMoveRequestFlags = 0;
+        if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+        {
+            if ((allowed_dir_flags & (1<<ImGuiDir_Left))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Up))    && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp,   ImGuiNavInput_KeyUp_,   ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Down))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
+        }
+        g.NavMoveClipDir = g.NavMoveDir;
+    }
+    else
+    {
+        // Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
+        // (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
+        IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
+        IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
+        g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
+    }
+
+    // Update PageUp/PageDown scroll
+    float nav_scoring_rect_offset_y = 0.0f;
+    if (nav_keyboard_active)
+        nav_scoring_rect_offset_y = NavUpdatePageUpPageDown(allowed_dir_flags);
+
+    // If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
+    if (g.NavMoveDir != ImGuiDir_None)
+    {
+        g.NavMoveRequest = true;
+        g.NavMoveDirLast = g.NavMoveDir;
+    }
+    if (g.NavMoveRequest && g.NavId == 0)
+    {
+        g.NavInitRequest = g.NavInitRequestFromMove = true;
+        g.NavInitResultId = 0;
+        g.NavDisableHighlight = false;
+    }
+    NavUpdateAnyRequestFlag();
+
+    // Scrolling
+    if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
+    {
+        // *Fallback* manual-scroll with Nav directional keys when window has no navigable item
+        ImGuiWindow* window = g.NavWindow;
+        const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
+        if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
+        {
+            if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
+                SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
+            if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
+                SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
+        }
+
+        // *Normal* Manual scroll with NavScrollXXX keys
+        // Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
+        ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
+        if (scroll_dir.x != 0.0f && window->ScrollbarX)
+        {
+            SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
+            g.NavMoveFromClampedRefRect = true;
+        }
+        if (scroll_dir.y != 0.0f)
+        {
+            SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
+            g.NavMoveFromClampedRefRect = true;
+        }
+    }
+
+    // Reset search results
+    g.NavMoveResultLocal.Clear();
+    g.NavMoveResultLocalVisibleSet.Clear();
+    g.NavMoveResultOther.Clear();
+
+    // When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
+    if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
+    {
+        ImGuiWindow* window = g.NavWindow;
+        ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
+        if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
+        {
+            float pad = window->CalcFontSize() * 0.5f;
+            window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
+            window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
+            g.NavId = 0;
+        }
+        g.NavMoveFromClampedRefRect = false;
+    }
+
+    // For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
+    ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
+    g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
+    g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
+    g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
+    g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
+    IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
+    //g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
+    g.NavScoringCount = 0;
+#if IMGUI_DEBUG_NAV_RECTS
+    if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
+    if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
+#endif
+}
+
+static void ImGui::NavUpdateMoveResult()
+{
+    // Select which result to use
+    ImGuiContext& g = *GImGui;
+    ImGuiNavMoveResult* result = (g.NavMoveResultLocal.ID != 0) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
+
+    // PageUp/PageDown behavior first jumps to the bottom/top mostly visible item, _otherwise_ use the result from the previous/next page.
+    if (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet)
+        if (g.NavMoveResultLocalVisibleSet.ID != 0 && g.NavMoveResultLocalVisibleSet.ID != g.NavId)
+            result = &g.NavMoveResultLocalVisibleSet;
+
+    // Maybe entering a flattened child from the outside? In this case solve the tie using the regular scoring rules.
+    if (result != &g.NavMoveResultOther && g.NavMoveResultOther.ID != 0 && g.NavMoveResultOther.Window->ParentWindow == g.NavWindow)
+        if ((g.NavMoveResultOther.DistBox < result->DistBox) || (g.NavMoveResultOther.DistBox == result->DistBox && g.NavMoveResultOther.DistCenter < result->DistCenter))
+            result = &g.NavMoveResultOther;
+    IM_ASSERT(g.NavWindow && result->Window);
+
+    // Scroll to keep newly navigated item fully into view.
+    if (g.NavLayer == 0)
+    {
+        ImRect rect_abs = ImRect(result->RectRel.Min + result->Window->Pos, result->RectRel.Max + result->Window->Pos);
+        NavScrollToBringItemIntoView(result->Window, rect_abs);
+
+        // Estimate upcoming scroll so we can offset our result position so mouse position can be applied immediately after in NavUpdate()
+        ImVec2 next_scroll = CalcNextScrollFromScrollTargetAndClamp(result->Window, false);
+        ImVec2 delta_scroll = result->Window->Scroll - next_scroll;
+        result->RectRel.Translate(delta_scroll);
+
+        // Also scroll parent window to keep us into view if necessary (we could/should technically recurse back the whole the parent hierarchy).
+        if (result->Window->Flags & ImGuiWindowFlags_ChildWindow)
+            NavScrollToBringItemIntoView(result->Window->ParentWindow, ImRect(rect_abs.Min + delta_scroll, rect_abs.Max + delta_scroll));
+    }
+
+    // Apply result from previous frame navigation directional move request
+    ClearActiveID();
+    g.NavWindow = result->Window;
+    SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
+    g.NavJustMovedToId = result->ID;
+    g.NavMoveFromClampedRefRect = false;
+}
+
+static float ImGui::NavUpdatePageUpPageDown(int allowed_dir_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavMoveDir == ImGuiDir_None && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget && g.NavLayer == 0)
+    {
+        ImGuiWindow* window = g.NavWindow;
+        bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && (allowed_dir_flags & (1 << ImGuiDir_Up));
+        bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && (allowed_dir_flags & (1 << ImGuiDir_Down));
+        if ((page_up_held && !page_down_held) || (page_down_held && !page_up_held))
+        {
+            if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
+            {
+                // Fallback manual-scroll when window has no navigable item
+                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
+                    SetWindowScrollY(window, window->Scroll.y - window->InnerClipRect.GetHeight());
+                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
+                    SetWindowScrollY(window, window->Scroll.y + window->InnerClipRect.GetHeight());
+            }
+            else
+            {
+                const ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
+                const float page_offset_y = ImMax(0.0f, window->InnerClipRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
+                float nav_scoring_rect_offset_y = 0.0f;
+                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
+                {
+                    nav_scoring_rect_offset_y = -page_offset_y;
+                    g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
+                    g.NavMoveClipDir = ImGuiDir_Up;
+                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
+                }
+                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
+                {
+                    nav_scoring_rect_offset_y = +page_offset_y;
+                    g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
+                    g.NavMoveClipDir = ImGuiDir_Down;
+                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
+                }
+                return nav_scoring_rect_offset_y;
+            }
+        }
+    }
+    return 0.0f;
+}
+
+static int FindWindowIndex(ImGuiWindow* window) // FIXME-OPT O(N)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = g.Windows.Size-1; i >= 0; i--)
+        if (g.Windows[i] == window)
+            return i;
+    return -1;
+}
+
+static ImGuiWindow* FindWindowNavFocusable(int i_start, int i_stop, int dir) // FIXME-OPT O(N)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = i_start; i >= 0 && i < g.Windows.Size && i != i_stop; i += dir)
+        if (ImGui::IsWindowNavFocusable(g.Windows[i]))
+            return g.Windows[i];
+    return NULL;
+}
+
+static void NavUpdateWindowingHighlightWindow(int focus_change_dir)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavWindowingTarget);
+    if (g.NavWindowingTarget->Flags & ImGuiWindowFlags_Modal)
+        return;
+
+    const int i_current = FindWindowIndex(g.NavWindowingTarget);
+    ImGuiWindow* window_target = FindWindowNavFocusable(i_current + focus_change_dir, -INT_MAX, focus_change_dir);
+    if (!window_target)
+        window_target = FindWindowNavFocusable((focus_change_dir < 0) ? (g.Windows.Size - 1) : 0, i_current, focus_change_dir);
+    if (window_target) // Don't reset windowing target if there's a single window in the list
+        g.NavWindowingTarget = g.NavWindowingTargetAnim = window_target;
+    g.NavWindowingToggleLayer = false;
+}
+
+// Window management mode (hold to: change focus/move/resize, tap to: toggle menu layer)
+static void ImGui::NavUpdateWindowing()
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* apply_focus_window = NULL;
+    bool apply_toggle_layer = false;
+
+    ImGuiWindow* modal_window = GetFrontMostPopupModal();
+    if (modal_window != NULL)
+    {
+        g.NavWindowingTarget = NULL;
+        return;
+    }
+
+    // Fade out
+    if (g.NavWindowingTargetAnim && g.NavWindowingTarget == NULL)
+    {
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha - g.IO.DeltaTime * 10.0f, 0.0f);
+        if (g.DimBgRatio <= 0.0f && g.NavWindowingHighlightAlpha <= 0.0f)
+            g.NavWindowingTargetAnim = NULL;
+    }
+
+    // Start CTRL-TAB or Square+L/R window selection
+    bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
+    bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
+    if (start_windowing_with_gamepad || start_windowing_with_keyboard)
+        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.Windows.Size - 1, -INT_MAX, -1))
+        {
+            g.NavWindowingTarget = g.NavWindowingTargetAnim = window;
+            g.NavWindowingTimer = g.NavWindowingHighlightAlpha = 0.0f;
+            g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
+            g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
+        }
+
+    // Gamepad update
+    g.NavWindowingTimer += g.IO.DeltaTime;
+    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavGamepad)
+    {
+        // Highlight only appears after a brief time holding the button, so that a fast tap on PadMenu (to toggle NavLayer) doesn't add visual noise
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f));
+
+        // Select window to focus
+        const int focus_change_dir = (int)IsNavInputPressed(ImGuiNavInput_FocusPrev, ImGuiInputReadMode_RepeatSlow) - (int)IsNavInputPressed(ImGuiNavInput_FocusNext, ImGuiInputReadMode_RepeatSlow);
+        if (focus_change_dir != 0)
+        {
+            NavUpdateWindowingHighlightWindow(focus_change_dir);
+            g.NavWindowingHighlightAlpha = 1.0f;
+        }
+
+        // Single press toggles NavLayer, long press with L/R apply actual focus on release (until then the window was merely rendered front-most)
+        if (!IsNavInputDown(ImGuiNavInput_Menu))
+        {
+            g.NavWindowingToggleLayer &= (g.NavWindowingHighlightAlpha < 1.0f); // Once button was held long enough we don't consider it a tap-to-toggle-layer press anymore.
+            if (g.NavWindowingToggleLayer && g.NavWindow)
+                apply_toggle_layer = true;
+            else if (!g.NavWindowingToggleLayer)
+                apply_focus_window = g.NavWindowingTarget;
+            g.NavWindowingTarget = NULL;
+        }
+    }
+
+    // Keyboard: Focus
+    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavKeyboard)
+    {
+        // Visuals only appears after a brief time after pressing TAB the first time, so that a fast CTRL+TAB doesn't add visual noise
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f)); // 1.0f
+        if (IsKeyPressedMap(ImGuiKey_Tab, true))
+            NavUpdateWindowingHighlightWindow(g.IO.KeyShift ? +1 : -1);
+        if (!g.IO.KeyCtrl)
+            apply_focus_window = g.NavWindowingTarget;
+    }
+
+    // Keyboard: Press and Release ALT to toggle menu layer
+    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
+    if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && IsNavInputPressed(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))
+        if (IsMousePosValid(&g.IO.MousePos) == IsMousePosValid(&g.IO.MousePosPrev))
+            apply_toggle_layer = true;
+
+    // Move window
+    if (g.NavWindowingTarget && !(g.NavWindowingTarget->Flags & ImGuiWindowFlags_NoMove))
+    {
+        ImVec2 move_delta;
+        if (g.NavInputSource == ImGuiInputSource_NavKeyboard && !g.IO.KeyShift)
+            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard, ImGuiInputReadMode_Down);
+        if (g.NavInputSource == ImGuiInputSource_NavGamepad)
+            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down);
+        if (move_delta.x != 0.0f || move_delta.y != 0.0f)
+        {
+            const float NAV_MOVE_SPEED = 800.0f;
+            const float move_speed = ImFloor(NAV_MOVE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); // FIXME: Doesn't code variable framerate very well
+            g.NavWindowingTarget->RootWindow->Pos += move_delta * move_speed;
+            g.NavDisableMouseHover = true;
+            MarkIniSettingsDirty(g.NavWindowingTarget);
+        }
+    }
+
+    // Apply final focus
+    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
+    {
+        g.NavDisableHighlight = false;
+        g.NavDisableMouseHover = true;
+        apply_focus_window = NavRestoreLastChildNavWindow(apply_focus_window);
+        ClosePopupsOverWindow(apply_focus_window);
+        FocusWindow(apply_focus_window);
+        if (apply_focus_window->NavLastIds[0] == 0)
+            NavInitWindow(apply_focus_window, false);
+
+        // If the window only has a menu layer, select it directly
+        if (apply_focus_window->DC.NavLayerActiveMask == (1 << 1))
+            g.NavLayer = 1;
+    }
+    if (apply_focus_window)
+        g.NavWindowingTarget = NULL;
+
+    // Apply menu/layer toggle
+    if (apply_toggle_layer && g.NavWindow)
+    {
+        // Move to parent menu if necessary
+        ImGuiWindow* new_nav_window = g.NavWindow;
+        while ((new_nav_window->DC.NavLayerActiveMask & (1 << 1)) == 0 && (new_nav_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (new_nav_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
+            new_nav_window = new_nav_window->ParentWindow;
+        if (new_nav_window != g.NavWindow)
+        {
+            ImGuiWindow* old_nav_window = g.NavWindow;
+            FocusWindow(new_nav_window);
+            new_nav_window->NavLastChildNavWindow = old_nav_window;
+        }
+        g.NavDisableHighlight = false;
+        g.NavDisableMouseHover = true;
+        NavRestoreLayer((g.NavWindow->DC.NavLayerActiveMask & (1 << 1)) ? (g.NavLayer ^ 1) : 0);
+    }
+}
+
+// Window has already passed the IsWindowNavFocusable()
+static const char* GetFallbackWindowNameForWindowingList(ImGuiWindow* window)
+{
+    if (window->Flags & ImGuiWindowFlags_Popup)
+        return "(Popup)";
+    if ((window->Flags & ImGuiWindowFlags_MenuBar) && strcmp(window->Name, "##MainMenuBar") == 0)
+        return "(Main menu bar)";
+    return "(Untitled)";
+}
+
+// Overlay displayed when using CTRL+TAB. Called by EndFrame().
+void ImGui::NavUpdateWindowingList()
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavWindowingTarget != NULL);
+
+    if (g.NavWindowingTimer < NAV_WINDOWING_LIST_APPEAR_DELAY)
+        return;
+
+    if (g.NavWindowingList == NULL)
+        g.NavWindowingList = FindWindowByName("###NavWindowingList");
+    SetNextWindowSizeConstraints(ImVec2(g.IO.DisplaySize.x * 0.20f, g.IO.DisplaySize.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
+    SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
+    PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
+    Begin("###NavWindowingList", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings);
+    for (int n = g.Windows.Size - 1; n >= 0; n--)
+    {
+        ImGuiWindow* window = g.Windows[n];
+        if (!IsWindowNavFocusable(window))
+            continue;
+        const char* label = window->Name;
+        if (label == FindRenderedTextEnd(label))
+            label = GetFallbackWindowNameForWindowingList(window);
+        Selectable(label, g.NavWindowingTarget == window);
+    }
+    End();
+    PopStyleVar();
+}
+
+//-----------------------------------------------------------------------------
+// COLUMNS
+//-----------------------------------------------------------------------------
+
 void ImGui::NextColumn()
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -13627,94 +8103,6 @@
         BeginColumns(id, columns_count, flags);
 }
 
-void ImGui::Indent(float indent_w)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    window->DC.Indent.x += (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
-    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
-}
-
-void ImGui::Unindent(float indent_w)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    window->DC.Indent.x -= (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
-    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
-}
-
-void ImGui::TreePush(const char* str_id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    PushID(str_id ? str_id : "#TreePush");
-}
-
-void ImGui::TreePush(const void* ptr_id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    PushID(ptr_id ? ptr_id : (const void*)"#TreePush");
-}
-
-void ImGui::TreePushRawID(ImGuiID id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    window->IDStack.push_back(id);
-}
-
-void ImGui::TreePop()
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    Unindent();
-
-    window->DC.TreeDepth--;
-    if (g.NavMoveDir == ImGuiDir_Left && g.NavWindow == window && NavMoveRequestButNoResultYet())
-        if (g.NavIdIsAlive && (window->DC.TreeDepthMayJumpToParentOnPop & (1 << window->DC.TreeDepth)))
-        {
-            SetNavID(window->IDStack.back(), g.NavLayer);
-            NavMoveRequestCancel();
-        }
-    window->DC.TreeDepthMayJumpToParentOnPop &= (1 << window->DC.TreeDepth) - 1;
-
-    IM_ASSERT(window->IDStack.Size > 1); // There should always be 1 element in the IDStack (pushed during window creation). If this triggers you called TreePop/PopID too much.
-    PopID();
-}
-
-void ImGui::Value(const char* prefix, bool b)
-{
-    Text("%s: %s", prefix, (b ? "true" : "false"));
-}
-
-void ImGui::Value(const char* prefix, int v)
-{
-    Text("%s: %d", prefix, v);
-}
-
-void ImGui::Value(const char* prefix, unsigned int v)
-{
-    Text("%s: %d", prefix, v);
-}
-
-void ImGui::Value(const char* prefix, float v, const char* float_format)
-{
-    if (float_format)
-    {
-        char fmt[64];
-        ImFormatString(fmt, IM_ARRAYSIZE(fmt), "%%s: %s", float_format);
-        Text(fmt, prefix, v);
-    }
-    else
-    {
-        Text("%s: %.3f", prefix, v);
-    }
-}
-
 //-----------------------------------------------------------------------------
 // DRAG AND DROP
 //-----------------------------------------------------------------------------
@@ -14003,6 +8391,397 @@
 }
 
 //-----------------------------------------------------------------------------
+// LOGGING
+//-----------------------------------------------------------------------------
+
+// Pass text data straight to log (without being displayed)
+void ImGui::LogText(const char* fmt, ...)
+{
+    ImGuiContext& g = *GImGui;
+    if (!g.LogEnabled)
+        return;
+
+    va_list args;
+    va_start(args, fmt);
+    if (g.LogFile)
+        vfprintf(g.LogFile, fmt, args);
+    else
+        g.LogClipboard.appendfv(fmt, args);
+    va_end(args);
+}
+
+// Internal version that takes a position to decide on newline placement and pad items according to their depth.
+// We split text into individual lines to add current tree level padding
+void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    if (!text_end)
+        text_end = FindRenderedTextEnd(text, text_end);
+
+    const bool log_new_line = ref_pos && (ref_pos->y > window->DC.LogLinePosY + 1);
+    if (ref_pos)
+        window->DC.LogLinePosY = ref_pos->y;
+
+    const char* text_remaining = text;
+    if (g.LogStartDepth > window->DC.TreeDepth)  // Re-adjust padding if we have popped out of our starting depth
+        g.LogStartDepth = window->DC.TreeDepth;
+    const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth);
+    for (;;)
+    {
+        // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry.
+        const char* line_end = text_remaining;
+        while (line_end < text_end)
+            if (*line_end == '\n')
+                break;
+            else
+                line_end++;
+        if (line_end >= text_end)
+            line_end = NULL;
+
+        const bool is_first_line = (text == text_remaining);
+        bool is_last_line = false;
+        if (line_end == NULL)
+        {
+            is_last_line = true;
+            line_end = text_end;
+        }
+        if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
+        {
+            const int char_count = (int)(line_end - text_remaining);
+            if (log_new_line || !is_first_line)
+                LogText(IM_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining);
+            else
+                LogText(" %.*s", char_count, text_remaining);
+        }
+
+        if (is_last_line)
+            break;
+        text_remaining = line_end + 1;
+    }
+}
+
+// Start logging ImGui output to TTY
+void ImGui::LogToTTY(int max_depth)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = stdout;
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+// Start logging ImGui output to given file
+void ImGui::LogToFile(int max_depth, const char* filename)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    if (!filename)
+    {
+        filename = g.IO.LogFilename;
+        if (!filename)
+            return;
+    }
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = ImFileOpen(filename, "ab");
+    if (!g.LogFile)
+    {
+        IM_ASSERT(g.LogFile != NULL); // Consider this an error
+        return;
+    }
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+// Start logging ImGui output to clipboard
+void ImGui::LogToClipboard(int max_depth)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = NULL;
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+void ImGui::LogFinish()
+{
+    ImGuiContext& g = *GImGui;
+    if (!g.LogEnabled)
+        return;
+
+    LogText(IM_NEWLINE);
+    if (g.LogFile != NULL)
+    {
+        if (g.LogFile == stdout)
+            fflush(g.LogFile);
+        else
+            fclose(g.LogFile);
+        g.LogFile = NULL;
+    }
+    if (g.LogClipboard.size() > 1)
+    {
+        SetClipboardText(g.LogClipboard.begin());
+        g.LogClipboard.clear();
+    }
+    g.LogEnabled = false;
+}
+
+// Helper to display logging buttons
+void ImGui::LogButtons()
+{
+    ImGuiContext& g = *GImGui;
+
+    PushID("LogButtons");
+    const bool log_to_tty = Button("Log To TTY"); SameLine();
+    const bool log_to_file = Button("Log To File"); SameLine();
+    const bool log_to_clipboard = Button("Log To Clipboard"); SameLine();
+    PushItemWidth(80.0f);
+    PushAllowKeyboardFocus(false);
+    SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL);
+    PopAllowKeyboardFocus();
+    PopItemWidth();
+    PopID();
+
+    // Start logging at the end of the function so that the buttons don't appear in the log
+    if (log_to_tty)
+        LogToTTY(g.LogAutoExpandMaxDepth);
+    if (log_to_file)
+        LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename);
+    if (log_to_clipboard)
+        LogToClipboard(g.LogAutoExpandMaxDepth);
+}
+
+//-----------------------------------------------------------------------------
+// SETTINGS
+//-----------------------------------------------------------------------------
+
+void ImGui::MarkIniSettingsDirty()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.SettingsDirtyTimer <= 0.0f)
+        g.SettingsDirtyTimer = g.IO.IniSavingRate;
+}
+
+void ImGui::MarkIniSettingsDirty(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+    if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings))
+        if (g.SettingsDirtyTimer <= 0.0f)
+            g.SettingsDirtyTimer = g.IO.IniSavingRate;
+}
+
+static ImGuiWindowSettings* CreateNewWindowSettings(const char* name)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsWindows.push_back(ImGuiWindowSettings());
+    ImGuiWindowSettings* settings = &g.SettingsWindows.back();
+    settings->Name = ImStrdup(name);
+    settings->ID = ImHash(name, 0);
+    return settings;
+}
+
+ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = 0; i != g.SettingsWindows.Size; i++)
+        if (g.SettingsWindows[i].ID == id)
+            return &g.SettingsWindows[i];
+    return NULL;
+}
+
+void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
+{
+    size_t file_data_size = 0;
+    char* file_data = (char*)ImFileLoadToMemory(ini_filename, "rb", &file_data_size);
+    if (!file_data)
+        return;
+    LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
+    ImGui::MemFree(file_data);
+}
+
+ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
+{
+    ImGuiContext& g = *GImGui;
+    const ImGuiID type_hash = ImHash(type_name, 0, 0);
+    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
+        if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
+            return &g.SettingsHandlers[handler_n];
+    return NULL;
+}
+
+// Zero-tolerance, no error reporting, cheap .ini parsing
+void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.Initialized);
+    IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
+
+    // For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
+    // For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
+    if (ini_size == 0)
+        ini_size = strlen(ini_data);
+    char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
+    char* buf_end = buf + ini_size;
+    memcpy(buf, ini_data, ini_size);
+    buf[ini_size] = 0;
+
+    void* entry_data = NULL;
+    ImGuiSettingsHandler* entry_handler = NULL;
+
+    char* line_end = NULL;
+    for (char* line = buf; line < buf_end; line = line_end + 1)
+    {
+        // Skip new lines markers, then find end of the line
+        while (*line == '\n' || *line == '\r')
+            line++;
+        line_end = line;
+        while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
+            line_end++;
+        line_end[0] = 0;
+
+        if (line[0] == '[' && line_end > line && line_end[-1] == ']')
+        {
+            // Parse "[Type][Name]". Note that 'Name' can itself contains [] characters, which is acceptable with the current format and parsing code.
+            line_end[-1] = 0;
+            const char* name_end = line_end - 1;
+            const char* type_start = line + 1;
+            char* type_end = (char*)(intptr_t)ImStrchrRange(type_start, name_end, ']');
+            const char* name_start = type_end ? ImStrchrRange(type_end + 1, name_end, '[') : NULL;
+            if (!type_end || !name_start)
+            {
+                name_start = type_start; // Import legacy entries that have no type
+                type_start = "Window";
+            }
+            else
+            {
+                *type_end = 0; // Overwrite first ']'
+                name_start++;  // Skip second '['
+            }
+            entry_handler = FindSettingsHandler(type_start);
+            entry_data = entry_handler ? entry_handler->ReadOpenFn(&g, entry_handler, name_start) : NULL;
+        }
+        else if (entry_handler != NULL && entry_data != NULL)
+        {
+            // Let type handler parse the line
+            entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
+        }
+    }
+    ImGui::MemFree(buf);
+    g.SettingsLoaded = true;
+}
+
+void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsDirtyTimer = 0.0f;
+    if (!ini_filename)
+        return;
+
+    size_t ini_data_size = 0;
+    const char* ini_data = SaveIniSettingsToMemory(&ini_data_size);
+    FILE* f = ImFileOpen(ini_filename, "wt");
+    if (!f)
+        return;
+    fwrite(ini_data, sizeof(char), ini_data_size, f);
+    fclose(f);
+}
+
+// Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer
+const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsDirtyTimer = 0.0f;
+    g.SettingsIniData.Buf.resize(0);
+    g.SettingsIniData.Buf.push_back(0);
+    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
+    {
+        ImGuiSettingsHandler* handler = &g.SettingsHandlers[handler_n];
+        handler->WriteAllFn(&g, handler, &g.SettingsIniData);
+    }
+    if (out_size)
+        *out_size = (size_t)g.SettingsIniData.size();
+    return g.SettingsIniData.c_str();
+}
+
+static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
+{
+    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHash(name, 0));
+    if (!settings)
+        settings = CreateNewWindowSettings(name);
+    return (void*)settings;
+}
+
+static void SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
+{
+    ImGuiWindowSettings* settings = (ImGuiWindowSettings*)entry;
+    float x, y;
+    int i;
+    if (sscanf(line, "Pos=%f,%f", &x, &y) == 2)         settings->Pos = ImVec2(x, y);
+    else if (sscanf(line, "Size=%f,%f", &x, &y) == 2)   settings->Size = ImMax(ImVec2(x, y), GImGui->Style.WindowMinSize);
+    else if (sscanf(line, "Collapsed=%d", &i) == 1)     settings->Collapsed = (i != 0);
+}
+
+static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
+{
+    // Gather data from windows that were active during this session
+    ImGuiContext& g = *imgui_ctx;
+    for (int i = 0; i != g.Windows.Size; i++)
+    {
+        ImGuiWindow* window = g.Windows[i];
+        if (window->Flags & ImGuiWindowFlags_NoSavedSettings)
+            continue;
+
+        ImGuiWindowSettings* settings = (window->SettingsIdx != -1) ? &g.SettingsWindows[window->SettingsIdx] : ImGui::FindWindowSettings(window->ID);
+        if (!settings)
+        {
+            settings = CreateNewWindowSettings(window->Name);
+            window->SettingsIdx = g.SettingsWindows.index_from_pointer(settings);
+        }
+        IM_ASSERT(settings->ID == window->ID);
+        settings->Pos = window->Pos;
+        settings->Size = window->SizeFull;
+        settings->Collapsed = window->Collapsed;
+    }
+
+    // Write a buffer
+    // If a window wasn't opened in this session we preserve its settings
+    buf->reserve(buf->size() + g.SettingsWindows.Size * 96); // ballpark reserve
+    for (int i = 0; i != g.SettingsWindows.Size; i++)
+    {
+        const ImGuiWindowSettings* settings = &g.SettingsWindows[i];
+        if (settings->Pos.x == FLT_MAX)
+            continue;
+        const char* name = settings->Name;
+        if (const char* p = strstr(name, "###"))  // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID()
+            name = p;
+        buf->appendf("[%s][%s]\n", handler->TypeName, name);
+        buf->appendf("Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
+        buf->appendf("Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
+        buf->appendf("Collapsed=%d\n", settings->Collapsed);
+        buf->appendf("\n");
+    }
+}
+
+//-----------------------------------------------------------------------------
 // PLATFORM DEPENDENT HELPERS
 //-----------------------------------------------------------------------------
 
@@ -14119,7 +8898,7 @@
 #endif
 
 //-----------------------------------------------------------------------------
-// HELP, METRICS
+// METRICS/DEBUG WINDOW
 //-----------------------------------------------------------------------------
 
 void ImGui::ShowMetricsWindow(bool* p_open)
diff --git a/imgui.h b/imgui.h
index 52caf45..97f79a8 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (headers)
 
 // See imgui.cpp file for documentation.
@@ -23,8 +23,8 @@
 
 // Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY00 then bounced up to XYY01 when release tagging happens)
-#define IMGUI_VERSION               "1.63"
-#define IMGUI_VERSION_NUM           16301
+#define IMGUI_VERSION               "1.64"
+#define IMGUI_VERSION_NUM           16401
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert))
 
 // Define attributes of all API symbols declarations (e.g. for DLL under Windows)

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj b/examples/example_win32_directx11/example_win32_directx11.vcxproj
index 9aa0986..166602a 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx11.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
index ab1e3fb..1df6a0c 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_dx11.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj b/examples/example_win32_directx12/example_win32_directx12.vcxproj
index c82f000..38c8335 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx12.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
index 43fdeba..28a2557 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj b/examples/example_win32_directx9/example_win32_directx9.vcxproj
index ebc8a92..08f21c8 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj
@@ -143,6 +143,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx9.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
index 2ac28d1..914cd26 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_dx9.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/imgui.cpp b/imgui.cpp
index 0b3ea0f..28b986a 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (main code and documentation)
 
 // Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp for demo code.
@@ -19,32 +19,58 @@
 
 /*
 
- Index
- - MISSION STATEMENT
- - END-USER GUIDE
- - PROGRAMMER GUIDE (read me!)
-   - Read first
-   - How to update to a newer version of Dear ImGui
-   - Getting started with integrating Dear ImGui in your code/engine
-   - Using gamepad/keyboard navigation controls [BETA]
- - API BREAKING CHANGES (read me when you update!)
- - ISSUES & TODO LIST
- - FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
-   - How can I tell whether to dispatch mouse/keyboard to imgui or to my application?
-   - How can I display an image? What is ImTextureID, how does it works?
-   - How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.
-   - How can I use my own math types instead of ImVec2/ImVec4? 
-   - How can I load a different font than the default?
-   - How can I easily use icons in my application?
-   - How can I load multiple fonts?
-   - How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
-   - How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
-   - I integrated Dear ImGui in my engine and the text or lines are blurry..
-   - I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
-   - How can I help?
- - ISSUES & TODO-LIST
- - CODE
+Index of this file:
 
+DOCUMENTATION
+- MISSION STATEMENT
+- END-USER GUIDE
+- PROGRAMMER GUIDE (read me!)
+  - Read first
+  - How to update to a newer version of Dear ImGui
+  - Getting started with integrating Dear ImGui in your code/engine
+  - Using gamepad/keyboard navigation controls [BETA]
+- API BREAKING CHANGES (read me when you update!)
+- FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
+  - How can I tell whether to dispatch mouse/keyboard to imgui or to my application?
+  - How can I display an image? What is ImTextureID, how does it works?
+  - How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.
+  - How can I use my own math types instead of ImVec2/ImVec4? 
+  - How can I load a different font than the default?
+  - How can I easily use icons in my application?
+  - How can I load multiple fonts?
+  - How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
+  - How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
+  - I integrated Dear ImGui in my engine and the text or lines are blurry..
+  - I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
+  - How can I help?
+
+CODE
+- Forward Declarations
+- Context and Memory Allocators
+- User facing structures (ImGuiStyle, ImGuiIO)
+- Helper/Utilities (ImXXX functions, Color functions)
+- ImGuiStorage
+- ImGuiTextFilter
+- ImGuiTextBuffer
+- ImGuiListClipper
+- Main Code (most of the code! lots of stuff, needs tidying up)
+- Tooltips
+- Popups
+- Navigation
+- Columns
+- Drag and Drop
+- Logging
+- Settings
+- Platform Dependent Helpers
+- Metrics/Debug window
+
+*/
+
+//-----------------------------------------------------------------------------
+// Documentation
+//-----------------------------------------------------------------------------
+
+/*
 
  MISSION STATEMENT
  =================
@@ -472,11 +498,6 @@
  - 2014/08/28 (1.09) - changed the behavior of IO.PixelCenterOffset following various rendering fixes
 
 
- ISSUES & TODO-LIST
- ==================
- See TODO.txt
-
-
  FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
  ======================================
 
@@ -824,7 +845,6 @@
 // Visual Studio warnings
 #ifdef _MSC_VER
 #pragma warning (disable: 4127) // condition expression is constant
-#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
 #pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
 #endif
 
@@ -852,24 +872,6 @@
 #endif
 #endif
 
-static const ImS32  IM_S32_MIN = INT_MIN;    // (-2147483647 - 1), (0x80000000);
-static const ImS32  IM_S32_MAX = INT_MAX;    // (2147483647), (0x7FFFFFFF)
-static const ImU32  IM_U32_MIN = 0;
-static const ImU32  IM_U32_MAX = UINT_MAX;   // (0xFFFFFFFF)
-#ifdef LLONG_MIN
-static const ImS64  IM_S64_MIN = LLONG_MIN;  // (-9223372036854775807ll - 1ll);
-static const ImS64  IM_S64_MAX = LLONG_MAX;  // (9223372036854775807ll);
-#else
-static const ImS64  IM_S64_MIN = -9223372036854775807LL - 1;
-static const ImS64  IM_S64_MAX = 9223372036854775807LL;
-#endif
-static const ImU64  IM_U64_MIN = 0;
-#ifdef ULLONG_MAX
-static const ImU64  IM_U64_MAX = ULLONG_MAX; // (0xFFFFFFFFFFFFFFFFull);
-#else
-static const ImU64  IM_U64_MAX = (2ULL * 9223372036854775807LL + 1);
-#endif
-
 // When using CTRL+TAB (or Gamepad Square+L/R) we delay the visual a little in order to reduce visual noise doing a fast switch.
 static const float NAV_WINDOWING_HIGHLIGHT_DELAY   = 0.20f; // Time before the highlight and screen dimming starts fading in
 static const float NAV_WINDOWING_LIST_APPEAR_DELAY = 0.15f; // Time before the window list starts to appear
@@ -884,7 +886,6 @@
 static void             SetWindowCollapsed(ImGuiWindow* window, bool collapsed, ImGuiCond cond);
 static void             FindHoveredWindow();
 static ImGuiWindow*     CreateNewWindow(const char* name, ImVec2 size, ImGuiWindowFlags flags);
-static ImGuiWindowSettings* CreateNewWindowSettings(const char* name);
 static void             CheckStacksSize(ImGuiWindow* window, bool write);
 static ImVec2           CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window, bool snap_on_edges);
 
@@ -894,13 +895,15 @@
 
 static ImRect           GetViewportRect();
 
-static bool             InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data);
-static int              InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end);
-static ImVec2           InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL, ImVec2* out_offset = NULL, bool stop_on_new_line = false);
+// Settings
+static void*            SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name);
+static void             SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line);
+static void             SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf);
 
-static inline int       DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format);
-static void             DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg_1, const void* arg_2);
-static bool             DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format);
+// Platform Dependents default implementation for IO functions
+static const char*      GetClipboardTextFn_DefaultImpl(void* user_data);
+static void             SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
+static void             ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
 
 namespace ImGui
 {
@@ -909,29 +912,20 @@
 static void             NavUpdate();
 static void             NavUpdateWindowing();
 static void             NavUpdateWindowingList();
+static void             NavUpdateMoveResult();
+static float            NavUpdatePageUpPageDown(int allowed_dir_flags);
+static inline void      NavUpdateAnyRequestFlag();
 static void             NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id);
+static ImVec2           NavCalcPreferredRefPos();
+static void             NavSaveLastChildNavWindow(ImGuiWindow* nav_window);
+static ImGuiWindow*     NavRestoreLastChildNavWindow(ImGuiWindow* window);
 
 static void             UpdateMouseInputs();
 static void             UpdateMouseWheel();
 static void             UpdateManualResize(ImGuiWindow* window, const ImVec2& size_auto_fit, int* border_held, int resize_grip_count, ImU32 resize_grip_col[4]);
-
-// Template widget behaviors
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool             DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power);
-
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool             SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb);
 }
 
 //-----------------------------------------------------------------------------
-// Platform dependent default implementations
-//-----------------------------------------------------------------------------
-
-static const char*      GetClipboardTextFn_DefaultImpl(void* user_data);
-static void             SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
-static void             ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
-
-//-----------------------------------------------------------------------------
 // Context and Memory Allocators
 //-----------------------------------------------------------------------------
 
@@ -961,7 +955,7 @@
 static void*    GImAllocatorUserData = NULL;
 
 //-----------------------------------------------------------------------------
-// User facing structures
+// User facing main structures
 //-----------------------------------------------------------------------------
 
 ImGuiStyle::ImGuiStyle()
@@ -1106,7 +1100,7 @@
 }
 
 //-----------------------------------------------------------------------------
-// HELPERS
+// HELPERS/UTILITIES
 //-----------------------------------------------------------------------------
 
 ImVec2 ImLineClosestPoint(const ImVec2& a, const ImVec2& b, const ImVec2& p)
@@ -1245,19 +1239,6 @@
     buf[p - p_start] = 0;                   // Zero terminate
 }
 
-template<typename TYPE>
-static const char* ImAtoi(const char* src, TYPE* output)
-{
-    int negative = 0;
-    if (*src == '-') { negative = 1; src++; }
-    if (*src == '+') { src++; }
-    TYPE v = 0;
-    while (*src >= '0' && *src <= '9')
-        v = (v * 10) + (*src++ - '0');
-    *output = negative ? -v : v;
-    return src;
-}
-
 // A) MSVC version appears to return -1 on overflow, whereas glibc appears to return total count (which may be >= buf_size).
 // Ideally we would test for only one of those limits at runtime depending on the behavior the vsnprintf(), but trying to deduct it at compile time sounds like a pandora can of worm.
 // B) When buf==NULL vsnprintf() will return the output size.
@@ -1338,7 +1319,7 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImText* helpers
+// HELPERS/UTILITIES (ImText* helpers)
 //-----------------------------------------------------------------------------
 
 // Convert UTF-8 to 32-bits character, process single character input.
@@ -1520,109 +1501,6 @@
     return bytes_count;
 }
 
-ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
-{
-    float s = 1.0f/255.0f;
-    return ImVec4(
-        ((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
-}
-
-ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
-{
-    ImU32 out;
-    out  = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
-    return out;
-}
-
-ImU32 ImGui::GetColorU32(ImGuiCol idx, float alpha_mul)
-{
-    ImGuiStyle& style = GImGui->Style;
-    ImVec4 c = style.Colors[idx];
-    c.w *= style.Alpha * alpha_mul;
-    return ColorConvertFloat4ToU32(c);
-}
-
-ImU32 ImGui::GetColorU32(const ImVec4& col)
-{
-    ImGuiStyle& style = GImGui->Style;
-    ImVec4 c = col;
-    c.w *= style.Alpha;
-    return ColorConvertFloat4ToU32(c);
-}
-
-const ImVec4& ImGui::GetStyleColorVec4(ImGuiCol idx)
-{
-    ImGuiStyle& style = GImGui->Style;
-    return style.Colors[idx];
-}
-
-ImU32 ImGui::GetColorU32(ImU32 col)
-{
-    float style_alpha = GImGui->Style.Alpha;
-    if (style_alpha >= 1.0f)
-        return col;
-    ImU32 a = (col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT;
-    a = (ImU32)(a * style_alpha); // We don't need to clamp 0..255 because Style.Alpha is in 0..1 range.
-    return (col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
-}
-
-// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
-// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
-void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
-{
-    float K = 0.f;
-    if (g < b)
-    {
-        ImSwap(g, b);
-        K = -1.f;
-    }
-    if (r < g)
-    {
-        ImSwap(r, g);
-        K = -2.f / 6.f - K;
-    }
-
-    const float chroma = r - (g < b ? g : b);
-    out_h = ImFabs(K + (g - b) / (6.f * chroma + 1e-20f));
-    out_s = chroma / (r + 1e-20f);
-    out_v = r;
-}
-
-// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
-// also http://en.wikipedia.org/wiki/HSL_and_HSV
-void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
-{
-    if (s == 0.0f)
-    {
-        // gray
-        out_r = out_g = out_b = v;
-        return;
-    }
-
-    h = ImFmod(h, 1.0f) / (60.0f/360.0f);
-    int   i = (int)h;
-    float f = h - (float)i;
-    float p = v * (1.0f - s);
-    float q = v * (1.0f - s * f);
-    float t = v * (1.0f - s * (1.0f - f));
-
-    switch (i)
-    {
-    case 0: out_r = v; out_g = t; out_b = p; break;
-    case 1: out_r = q; out_g = v; out_b = p; break;
-    case 2: out_r = p; out_g = v; out_b = t; break;
-    case 3: out_r = p; out_g = q; out_b = v; break;
-    case 4: out_r = t; out_g = p; out_b = v; break;
-    case 5: default: out_r = v; out_g = p; out_b = q; break;
-    }
-}
-
 FILE* ImFileOpen(const char* filename, const char* mode)
 {
 #if defined(_WIN32) && !defined(__CYGWIN__)
@@ -1682,6 +1560,113 @@
 }
 
 //-----------------------------------------------------------------------------
+// COLOR FUNCTIONS
+//-----------------------------------------------------------------------------
+
+ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
+{
+    float s = 1.0f/255.0f;
+    return ImVec4(
+        ((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
+}
+
+ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
+{
+    ImU32 out;
+    out  = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
+    return out;
+}
+
+// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
+// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
+void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
+{
+    float K = 0.f;
+    if (g < b)
+    {
+        ImSwap(g, b);
+        K = -1.f;
+    }
+    if (r < g)
+    {
+        ImSwap(r, g);
+        K = -2.f / 6.f - K;
+    }
+
+    const float chroma = r - (g < b ? g : b);
+    out_h = ImFabs(K + (g - b) / (6.f * chroma + 1e-20f));
+    out_s = chroma / (r + 1e-20f);
+    out_v = r;
+}
+
+// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
+// also http://en.wikipedia.org/wiki/HSL_and_HSV
+void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
+{
+    if (s == 0.0f)
+    {
+        // gray
+        out_r = out_g = out_b = v;
+        return;
+    }
+
+    h = ImFmod(h, 1.0f) / (60.0f/360.0f);
+    int   i = (int)h;
+    float f = h - (float)i;
+    float p = v * (1.0f - s);
+    float q = v * (1.0f - s * f);
+    float t = v * (1.0f - s * (1.0f - f));
+
+    switch (i)
+    {
+    case 0: out_r = v; out_g = t; out_b = p; break;
+    case 1: out_r = q; out_g = v; out_b = p; break;
+    case 2: out_r = p; out_g = v; out_b = t; break;
+    case 3: out_r = p; out_g = q; out_b = v; break;
+    case 4: out_r = t; out_g = p; out_b = v; break;
+    case 5: default: out_r = v; out_g = p; out_b = q; break;
+    }
+}
+
+ImU32 ImGui::GetColorU32(ImGuiCol idx, float alpha_mul)
+{
+    ImGuiStyle& style = GImGui->Style;
+    ImVec4 c = style.Colors[idx];
+    c.w *= style.Alpha * alpha_mul;
+    return ColorConvertFloat4ToU32(c);
+}
+
+ImU32 ImGui::GetColorU32(const ImVec4& col)
+{
+    ImGuiStyle& style = GImGui->Style;
+    ImVec4 c = col;
+    c.w *= style.Alpha;
+    return ColorConvertFloat4ToU32(c);
+}
+
+const ImVec4& ImGui::GetStyleColorVec4(ImGuiCol idx)
+{
+    ImGuiStyle& style = GImGui->Style;
+    return style.Colors[idx];
+}
+
+ImU32 ImGui::GetColorU32(ImU32 col)
+{
+    float style_alpha = GImGui->Style.Alpha;
+    if (style_alpha >= 1.0f)
+        return col;
+    ImU32 a = (col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT;
+    a = (ImU32)(a * style_alpha); // We don't need to clamp 0..255 because Style.Alpha is in 0..1 range.
+    return (col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
+}
+
+//-----------------------------------------------------------------------------
 // ImGuiStorage
 // Helper: Key->value storage
 //-----------------------------------------------------------------------------
@@ -1983,51 +1968,6 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImGuiSimpleColumns (internal use only)
-//-----------------------------------------------------------------------------
-
-ImGuiMenuColumns::ImGuiMenuColumns()
-{
-    Count = 0;
-    Spacing = Width = NextWidth = 0.0f;
-    memset(Pos, 0, sizeof(Pos));
-    memset(NextWidths, 0, sizeof(NextWidths));
-}
-
-void ImGuiMenuColumns::Update(int count, float spacing, bool clear)
-{
-    IM_ASSERT(Count <= IM_ARRAYSIZE(Pos));
-    Count = count;
-    Width = NextWidth = 0.0f;
-    Spacing = spacing;
-    if (clear) memset(NextWidths, 0, sizeof(NextWidths));
-    for (int i = 0; i < Count; i++)
-    {
-        if (i > 0 && NextWidths[i] > 0.0f)
-            Width += Spacing;
-        Pos[i] = (float)(int)Width;
-        Width += NextWidths[i];
-        NextWidths[i] = 0.0f;
-    }
-}
-
-float ImGuiMenuColumns::DeclColumns(float w0, float w1, float w2) // not using va_arg because they promote float to double
-{
-    NextWidth = 0.0f;
-    NextWidths[0] = ImMax(NextWidths[0], w0);
-    NextWidths[1] = ImMax(NextWidths[1], w1);
-    NextWidths[2] = ImMax(NextWidths[2], w2);
-    for (int i = 0; i < 3; i++)
-        NextWidth += NextWidths[i] + ((i > 0 && NextWidths[i] > 0.0f) ? Spacing : 0.0f);
-    return ImMax(Width, NextWidth);
-}
-
-float ImGuiMenuColumns::CalcExtraSpace(float avail_w)
-{
-    return ImMax(0.0f, avail_w - Width);
-}
-
-//-----------------------------------------------------------------------------
 // ImGuiListClipper
 //-----------------------------------------------------------------------------
 
@@ -2112,9 +2052,11 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImGuiWindow
+// MAIN CODE
+// (this category is still too large and badly ordered, needs some tidying up)
 //-----------------------------------------------------------------------------
 
+// ImGuiWindow is mostly a dumb struct. It merely has a constructor and a few helper methods
 ImGuiWindow::ImGuiWindow(ImGuiContext* context, const char* name)
     : DrawListInst(&context->DrawListSharedData)
 {
@@ -2222,10 +2164,6 @@
     return id;
 }
 
-//-----------------------------------------------------------------------------
-// Internal API exposed in imgui_internal.h
-//-----------------------------------------------------------------------------
-
 static void SetCurrentWindow(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -2393,285 +2331,6 @@
     ItemSize(bb.GetSize(), text_offset_y);
 }
 
-static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
-{
-    if (ImFabs(dx) > ImFabs(dy))
-        return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
-    return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
-}
-
-static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
-{
-    if (a1 < b0)
-        return a1 - b0;
-    if (b1 < a0)
-        return a0 - b1;
-    return 0.0f;
-}
-
-static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
-{
-    if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
-    {
-        r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
-        r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
-    }
-    else
-    {
-        r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
-        r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
-    }
-}
-
-// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
-static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    if (g.NavLayer != window->DC.NavLayerCurrent)
-        return false;
-
-    const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
-    g.NavScoringCount++;
-
-    // When entering through a NavFlattened border, we consider child window items as fully clipped for scoring
-    if (window->ParentWindow == g.NavWindow)
-    {
-        IM_ASSERT((window->Flags | g.NavWindow->Flags) & ImGuiWindowFlags_NavFlattened);
-        if (!window->ClipRect.Contains(cand))
-            return false;
-        cand.ClipWithFull(window->ClipRect); // This allows the scored item to not overlap other candidates in the parent window
-    }
-
-    // We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
-    // For example, this ensure that items in one column are not reached when moving vertically from items in another column.
-    NavClampRectToVisibleAreaForMoveDir(g.NavMoveClipDir, cand, window->ClipRect);
-
-    // Compute distance between boxes
-    // FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
-    float dbx = NavScoreItemDistInterval(cand.Min.x, cand.Max.x, curr.Min.x, curr.Max.x);
-    float dby = NavScoreItemDistInterval(ImLerp(cand.Min.y, cand.Max.y, 0.2f), ImLerp(cand.Min.y, cand.Max.y, 0.8f), ImLerp(curr.Min.y, curr.Max.y, 0.2f), ImLerp(curr.Min.y, curr.Max.y, 0.8f)); // Scale down on Y to keep using box-distance for vertically touching items
-    if (dby != 0.0f && dbx != 0.0f)
-       dbx = (dbx/1000.0f) + ((dbx > 0.0f) ? +1.0f : -1.0f);
-    float dist_box = ImFabs(dbx) + ImFabs(dby);
-
-    // Compute distance between centers (this is off by a factor of 2, but we only compare center distances with each other so it doesn't matter)
-    float dcx = (cand.Min.x + cand.Max.x) - (curr.Min.x + curr.Max.x);
-    float dcy = (cand.Min.y + cand.Max.y) - (curr.Min.y + curr.Max.y);
-    float dist_center = ImFabs(dcx) + ImFabs(dcy); // L1 metric (need this for our connectedness guarantee)
-
-    // Determine which quadrant of 'curr' our candidate item 'cand' lies in based on distance
-    ImGuiDir quadrant;
-    float dax = 0.0f, day = 0.0f, dist_axial = 0.0f;
-    if (dbx != 0.0f || dby != 0.0f)
-    {
-        // For non-overlapping boxes, use distance between boxes
-        dax = dbx;
-        day = dby;
-        dist_axial = dist_box;
-        quadrant = NavScoreItemGetQuadrant(dbx, dby);
-    }
-    else if (dcx != 0.0f || dcy != 0.0f)
-    {
-        // For overlapping boxes with different centers, use distance between centers
-        dax = dcx;
-        day = dcy;
-        dist_axial = dist_center;
-        quadrant = NavScoreItemGetQuadrant(dcx, dcy);
-    }
-    else
-    {
-        // Degenerate case: two overlapping buttons with same center, break ties arbitrarily (note that LastItemId here is really the _previous_ item order, but it doesn't matter)
-        quadrant = (window->DC.LastItemId < g.NavId) ? ImGuiDir_Left : ImGuiDir_Right;
-    }
-
-#if IMGUI_DEBUG_NAV_SCORING
-    char buf[128];
-    if (ImGui::IsMouseHoveringRect(cand.Min, cand.Max))
-    {
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "dbox (%.2f,%.2f->%.4f)\ndcen (%.2f,%.2f->%.4f)\nd (%.2f,%.2f->%.4f)\nnav %c, quadrant %c", dbx, dby, dist_box, dcx, dcy, dist_center, dax, day, dist_axial, "WENS"[g.NavMoveDir], "WENS"[quadrant]);
-        ImDrawList* draw_list = ImGui::GetOverlayDrawList();
-        draw_list->AddRect(curr.Min, curr.Max, IM_COL32(255,200,0,100));
-        draw_list->AddRect(cand.Min, cand.Max, IM_COL32(255,255,0,200));
-        draw_list->AddRectFilled(cand.Max-ImVec2(4,4), cand.Max+ImGui::CalcTextSize(buf)+ImVec2(4,4), IM_COL32(40,0,0,150));
-        draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Max, ~0U, buf);
-    }
-    else if (g.IO.KeyCtrl) // Hold to preview score in matching quadrant. Press C to rotate.
-    {
-        if (IsKeyPressedMap(ImGuiKey_C)) { g.NavMoveDirLast = (ImGuiDir)((g.NavMoveDirLast + 1) & 3); g.IO.KeysDownDuration[g.IO.KeyMap[ImGuiKey_C]] = 0.01f; }
-        if (quadrant == g.NavMoveDir)
-        {
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "%.0f/%.0f", dist_box, dist_center);
-            ImDrawList* draw_list = ImGui::GetOverlayDrawList();
-            draw_list->AddRectFilled(cand.Min, cand.Max, IM_COL32(255, 0, 0, 200));
-            draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Min, IM_COL32(255, 255, 255, 255), buf);
-        }
-    }
- #endif
-
-    // Is it in the quadrant we're interesting in moving to?
-    bool new_best = false;
-    if (quadrant == g.NavMoveDir)
-    {
-        // Does it beat the current best candidate?
-        if (dist_box < result->DistBox)
-        {
-            result->DistBox = dist_box;
-            result->DistCenter = dist_center;
-            return true;
-        }
-        if (dist_box == result->DistBox)
-        {
-            // Try using distance between center points to break ties
-            if (dist_center < result->DistCenter)
-            {
-                result->DistCenter = dist_center;
-                new_best = true;
-            }
-            else if (dist_center == result->DistCenter)
-            {
-                // Still tied! we need to be extra-careful to make sure everything gets linked properly. We consistently break ties by symbolically moving "later" items
-                // (with higher index) to the right/downwards by an infinitesimal amount since we the current "best" button already (so it must have a lower index),
-                // this is fairly easy. This rule ensures that all buttons with dx==dy==0 will end up being linked in order of appearance along the x axis.
-                if (((g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down) ? dby : dbx) < 0.0f) // moving bj to the right/down decreases distance
-                    new_best = true;
-            }
-        }
-    }
-
-    // Axial check: if 'curr' has no link at all in some direction and 'cand' lies roughly in that direction, add a tentative link. This will only be kept if no "real" matches
-    // are found, so it only augments the graph produced by the above method using extra links. (important, since it doesn't guarantee strong connectedness)
-    // This is just to avoid buttons having no links in a particular direction when there's a suitable neighbor. you get good graphs without this too.
-    // 2017/09/29: FIXME: This now currently only enabled inside menu bars, ideally we'd disable it everywhere. Menus in particular need to catch failure. For general navigation it feels awkward.
-    // Disabling it may lead to disconnected graphs when nodes are very spaced out on different axis. Perhaps consider offering this as an option?
-    if (result->DistBox == FLT_MAX && dist_axial < result->DistAxial)  // Check axial match
-        if (g.NavLayer == 1 && !(g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
-            if ((g.NavMoveDir == ImGuiDir_Left && dax < 0.0f) || (g.NavMoveDir == ImGuiDir_Right && dax > 0.0f) || (g.NavMoveDir == ImGuiDir_Up && day < 0.0f) || (g.NavMoveDir == ImGuiDir_Down && day > 0.0f))
-            {
-                result->DistAxial = dist_axial;
-                new_best = true;
-            }
-
-    return new_best;
-}
-
-static void NavSaveLastChildNavWindow(ImGuiWindow* child_window)
-{
-    ImGuiWindow* parent_window = child_window;
-    while (parent_window && (parent_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (parent_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
-        parent_window = parent_window->ParentWindow;
-    if (parent_window && parent_window != child_window)
-        parent_window->NavLastChildNavWindow = child_window;
-}
-
-// Call when we are expected to land on Layer 0 after FocusWindow()
-static ImGuiWindow* NavRestoreLastChildNavWindow(ImGuiWindow* window)
-{
-    return window->NavLastChildNavWindow ? window->NavLastChildNavWindow : window;
-}
-
-static void NavRestoreLayer(int layer)
-{
-    ImGuiContext& g = *GImGui;
-    g.NavLayer = layer;
-    if (layer == 0)
-        g.NavWindow = NavRestoreLastChildNavWindow(g.NavWindow);
-    if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
-        ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
-    else
-        ImGui::NavInitWindow(g.NavWindow, true);
-}
-
-static inline void NavUpdateAnyRequestFlag()
-{
-    ImGuiContext& g = *GImGui;
-    g.NavAnyRequest = g.NavMoveRequest || g.NavInitRequest || (IMGUI_DEBUG_NAV_SCORING && g.NavWindow != NULL);
-    if (g.NavAnyRequest)
-        IM_ASSERT(g.NavWindow != NULL);
-}
-
-bool ImGui::NavMoveRequestButNoResultYet()
-{
-    ImGuiContext& g = *GImGui;
-    return g.NavMoveRequest && g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0;
-}
-
-void ImGui::NavMoveRequestCancel()
-{
-    ImGuiContext& g = *GImGui;
-    g.NavMoveRequest = false;
-    NavUpdateAnyRequestFlag();
-}
-
-// We get there when either NavId == id, or when g.NavAnyRequest is set (which is updated by NavUpdateAnyRequestFlag above)
-static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    //if (!g.IO.NavActive)  // [2017/10/06] Removed this possibly redundant test but I am not sure of all the side-effects yet. Some of the feature here will need to work regardless of using a _NoNavInputs flag.
-    //    return;
-
-    const ImGuiItemFlags item_flags = window->DC.ItemFlags;
-    const ImRect nav_bb_rel(nav_bb.Min - window->Pos, nav_bb.Max - window->Pos);
-
-    // Process Init Request
-    if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
-    {
-        // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
-        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
-        {
-            g.NavInitResultId = id;
-            g.NavInitResultRectRel = nav_bb_rel;
-        }
-        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
-        {
-            g.NavInitRequest = false; // Found a match, clear request
-            NavUpdateAnyRequestFlag();
-        }
-    }
-
-    // Process Move Request (scoring for navigation)
-    // FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
-    if ((g.NavId != id || (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AllowCurrentNavId)) && !(item_flags & ImGuiItemFlags_NoNav))
-    {
-        ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
-#if IMGUI_DEBUG_NAV_SCORING
-        // [DEBUG] Score all items in NavWindow at all times
-        if (!g.NavMoveRequest)
-            g.NavMoveDir = g.NavMoveDirLast;
-        bool new_best = NavScoreItem(result, nav_bb) && g.NavMoveRequest;
-#else
-        bool new_best = g.NavMoveRequest && NavScoreItem(result, nav_bb);
-#endif
-        if (new_best)
-        {
-            result->ID = id;
-            result->Window = window;
-            result->RectRel = nav_bb_rel;
-        }
-
-        const float VISIBLE_RATIO = 0.70f;
-        if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
-            if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
-                if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
-                {
-                    result = &g.NavMoveResultLocalVisibleSet;
-                    result->ID = id;
-                    result->Window = window;
-                    result->RectRel = nav_bb_rel;
-                }
-    }
-
-    // Update window-relative bounding box of navigated item
-    if (g.NavId == id)
-    {
-        g.NavWindow = window;                                           // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
-        g.NavLayer = window->DC.NavLayerCurrent;
-        g.NavIdIsAlive = true;
-        g.NavIdTabCounter = window->FocusIdxTabCounter;
-        window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel;    // Store item bounding box (relative to window position)
-    }
-}
-
 // Declare item bounding box for clipping and interaction.
 // Note that the size can be different than the one provided to ItemSize(). Typically, widgets that spread over available surface
 // declare their minimum size requirement to ItemSize() and then use a larger region for drawing/interaction, which is passed to ItemAdd().
@@ -2972,662 +2631,6 @@
     return &GImGui->DrawListSharedData;
 }
 
-// This needs to be called before we submit any widget (aka in or before Begin)
-void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(window == g.NavWindow);
-    bool init_for_nav = false;
-    if (!(window->Flags & ImGuiWindowFlags_NoNavInputs))
-        if (!(window->Flags & ImGuiWindowFlags_ChildWindow) || (window->Flags & ImGuiWindowFlags_Popup) || (window->NavLastIds[0] == 0) || force_reinit)
-            init_for_nav = true;
-    if (init_for_nav)
-    {
-        SetNavID(0, g.NavLayer);
-        g.NavInitRequest = true;
-        g.NavInitRequestFromMove = false;
-        g.NavInitResultId = 0;
-        g.NavInitResultRectRel = ImRect();
-        NavUpdateAnyRequestFlag();
-    }
-    else
-    {
-        g.NavId = window->NavLastIds[0];
-    }
-}
-
-static ImVec2 NavCalcPreferredRefPos()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow)
-        return ImFloor(g.IO.MousePos);
-
-    // When navigation is active and mouse is disabled, decide on an arbitrary position around the bottom left of the currently navigated item
-    const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
-    ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x*4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
-    ImRect visible_rect = GetViewportRect();
-    return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
-}
-
-static int FindWindowIndex(ImGuiWindow* window) // FIXME-OPT O(N)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = g.Windows.Size-1; i >= 0; i--)
-        if (g.Windows[i] == window)
-            return i;
-    return -1;
-}
-
-static ImGuiWindow* FindWindowNavFocusable(int i_start, int i_stop, int dir) // FIXME-OPT O(N)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = i_start; i >= 0 && i < g.Windows.Size && i != i_stop; i += dir)
-        if (ImGui::IsWindowNavFocusable(g.Windows[i]))
-            return g.Windows[i];
-    return NULL;
-}
-
-float ImGui::GetNavInputAmount(ImGuiNavInput n, ImGuiInputReadMode mode)
-{
-    ImGuiContext& g = *GImGui;
-    if (mode == ImGuiInputReadMode_Down)
-        return g.IO.NavInputs[n];                         // Instant, read analog input (0.0f..1.0f, as provided by user)
-
-    const float t = g.IO.NavInputsDownDuration[n];
-    if (t < 0.0f && mode == ImGuiInputReadMode_Released)  // Return 1.0f when just released, no repeat, ignore analog input.
-        return (g.IO.NavInputsDownDurationPrev[n] >= 0.0f ? 1.0f : 0.0f);
-    if (t < 0.0f)
-        return 0.0f;
-    if (mode == ImGuiInputReadMode_Pressed)               // Return 1.0f when just pressed, no repeat, ignore analog input.
-        return (t == 0.0f) ? 1.0f : 0.0f;
-    if (mode == ImGuiInputReadMode_Repeat)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
-    if (mode == ImGuiInputReadMode_RepeatSlow)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 1.00f, g.IO.KeyRepeatRate * 2.00f);
-    if (mode == ImGuiInputReadMode_RepeatFast)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.30f);
-    return 0.0f;
-}
-
-ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor, float fast_factor)
-{
-    ImVec2 delta(0.0f, 0.0f);
-    if (dir_sources & ImGuiNavDirSourceFlags_Keyboard)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_KeyRight_, mode)   - GetNavInputAmount(ImGuiNavInput_KeyLeft_,   mode), GetNavInputAmount(ImGuiNavInput_KeyDown_,   mode) - GetNavInputAmount(ImGuiNavInput_KeyUp_,   mode));
-    if (dir_sources & ImGuiNavDirSourceFlags_PadDPad)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_DpadRight, mode)   - GetNavInputAmount(ImGuiNavInput_DpadLeft,   mode), GetNavInputAmount(ImGuiNavInput_DpadDown,   mode) - GetNavInputAmount(ImGuiNavInput_DpadUp,   mode));
-    if (dir_sources & ImGuiNavDirSourceFlags_PadLStick)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_LStickRight, mode) - GetNavInputAmount(ImGuiNavInput_LStickLeft, mode), GetNavInputAmount(ImGuiNavInput_LStickDown, mode) - GetNavInputAmount(ImGuiNavInput_LStickUp, mode));
-    if (slow_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakSlow))
-        delta *= slow_factor;
-    if (fast_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakFast))
-        delta *= fast_factor;
-    return delta;
-}
-
-static void NavUpdateWindowingHighlightWindow(int focus_change_dir)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavWindowingTarget);
-    if (g.NavWindowingTarget->Flags & ImGuiWindowFlags_Modal)
-        return;
-
-    const int i_current = FindWindowIndex(g.NavWindowingTarget);
-    ImGuiWindow* window_target = FindWindowNavFocusable(i_current + focus_change_dir, -INT_MAX, focus_change_dir);
-    if (!window_target)
-        window_target = FindWindowNavFocusable((focus_change_dir < 0) ? (g.Windows.Size - 1) : 0, i_current, focus_change_dir);
-    if (window_target) // Don't reset windowing target if there's a single window in the list
-        g.NavWindowingTarget = g.NavWindowingTargetAnim = window_target;
-    g.NavWindowingToggleLayer = false;
-}
-
-// Window management mode (hold to: change focus/move/resize, tap to: toggle menu layer)
-static void ImGui::NavUpdateWindowing()
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* apply_focus_window = NULL;
-    bool apply_toggle_layer = false;
-
-    ImGuiWindow* modal_window = GetFrontMostPopupModal();
-    if (modal_window != NULL)
-    {
-        g.NavWindowingTarget = NULL;
-        return;
-    }
-
-    // Fade out
-    if (g.NavWindowingTargetAnim && g.NavWindowingTarget == NULL)
-    {
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha - g.IO.DeltaTime * 10.0f, 0.0f);
-        if (g.DimBgRatio <= 0.0f && g.NavWindowingHighlightAlpha <= 0.0f)
-            g.NavWindowingTargetAnim = NULL;
-    }
-
-    // Start CTRL-TAB or Square+L/R window selection
-    bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
-    bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
-    if (start_windowing_with_gamepad || start_windowing_with_keyboard)
-        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.Windows.Size - 1, -INT_MAX, -1))
-        {
-            g.NavWindowingTarget = g.NavWindowingTargetAnim = window;
-            g.NavWindowingTimer = g.NavWindowingHighlightAlpha = 0.0f;
-            g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
-            g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
-        }
-
-    // Gamepad update
-    g.NavWindowingTimer += g.IO.DeltaTime;
-    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavGamepad)
-    {
-        // Highlight only appears after a brief time holding the button, so that a fast tap on PadMenu (to toggle NavLayer) doesn't add visual noise
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f));
-
-        // Select window to focus
-        const int focus_change_dir = (int)IsNavInputPressed(ImGuiNavInput_FocusPrev, ImGuiInputReadMode_RepeatSlow) - (int)IsNavInputPressed(ImGuiNavInput_FocusNext, ImGuiInputReadMode_RepeatSlow);
-        if (focus_change_dir != 0)
-        {
-            NavUpdateWindowingHighlightWindow(focus_change_dir);
-            g.NavWindowingHighlightAlpha = 1.0f;
-        }
-
-        // Single press toggles NavLayer, long press with L/R apply actual focus on release (until then the window was merely rendered front-most)
-        if (!IsNavInputDown(ImGuiNavInput_Menu))
-        {
-            g.NavWindowingToggleLayer &= (g.NavWindowingHighlightAlpha < 1.0f); // Once button was held long enough we don't consider it a tap-to-toggle-layer press anymore.
-            if (g.NavWindowingToggleLayer && g.NavWindow)
-                apply_toggle_layer = true;
-            else if (!g.NavWindowingToggleLayer)
-                apply_focus_window = g.NavWindowingTarget;
-            g.NavWindowingTarget = NULL;
-        }
-    }
-
-    // Keyboard: Focus
-    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavKeyboard)
-    {
-        // Visuals only appears after a brief time after pressing TAB the first time, so that a fast CTRL+TAB doesn't add visual noise
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f)); // 1.0f
-        if (IsKeyPressedMap(ImGuiKey_Tab, true))
-            NavUpdateWindowingHighlightWindow(g.IO.KeyShift ? +1 : -1);
-        if (!g.IO.KeyCtrl)
-            apply_focus_window = g.NavWindowingTarget;
-    }
-
-    // Keyboard: Press and Release ALT to toggle menu layer
-    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
-    if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && IsNavInputPressed(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))
-        if (IsMousePosValid(&g.IO.MousePos) == IsMousePosValid(&g.IO.MousePosPrev))
-            apply_toggle_layer = true;
-
-    // Move window
-    if (g.NavWindowingTarget && !(g.NavWindowingTarget->Flags & ImGuiWindowFlags_NoMove))
-    {
-        ImVec2 move_delta;
-        if (g.NavInputSource == ImGuiInputSource_NavKeyboard && !g.IO.KeyShift)
-            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard, ImGuiInputReadMode_Down);
-        if (g.NavInputSource == ImGuiInputSource_NavGamepad)
-            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down);
-        if (move_delta.x != 0.0f || move_delta.y != 0.0f)
-        {
-            const float NAV_MOVE_SPEED = 800.0f;
-            const float move_speed = ImFloor(NAV_MOVE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); // FIXME: Doesn't code variable framerate very well
-            g.NavWindowingTarget->RootWindow->Pos += move_delta * move_speed;
-            g.NavDisableMouseHover = true;
-            MarkIniSettingsDirty(g.NavWindowingTarget);
-        }
-    }
-
-    // Apply final focus
-    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
-    {
-        g.NavDisableHighlight = false;
-        g.NavDisableMouseHover = true;
-        apply_focus_window = NavRestoreLastChildNavWindow(apply_focus_window);
-        ClosePopupsOverWindow(apply_focus_window);
-        FocusWindow(apply_focus_window);
-        if (apply_focus_window->NavLastIds[0] == 0)
-            NavInitWindow(apply_focus_window, false);
-
-        // If the window only has a menu layer, select it directly
-        if (apply_focus_window->DC.NavLayerActiveMask == (1 << 1))
-            g.NavLayer = 1;
-    }
-    if (apply_focus_window)
-        g.NavWindowingTarget = NULL;
-
-    // Apply menu/layer toggle
-    if (apply_toggle_layer && g.NavWindow)
-    {
-        // Move to parent menu if necessary
-        ImGuiWindow* new_nav_window = g.NavWindow;
-        while ((new_nav_window->DC.NavLayerActiveMask & (1 << 1)) == 0 && (new_nav_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (new_nav_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
-            new_nav_window = new_nav_window->ParentWindow;
-
-        if (new_nav_window != g.NavWindow)
-        {
-            ImGuiWindow* old_nav_window = g.NavWindow;
-            FocusWindow(new_nav_window);
-            new_nav_window->NavLastChildNavWindow = old_nav_window;
-        }
-        g.NavDisableHighlight = false;
-        g.NavDisableMouseHover = true;
-        NavRestoreLayer((g.NavWindow->DC.NavLayerActiveMask & (1 << 1)) ? (g.NavLayer ^ 1) : 0);
-    }
-}
-
-// Window has already passed the IsWindowNavFocusable()
-static const char* GetFallbackWindowNameForWindowingList(ImGuiWindow* window)
-{
-    if (window->Flags & ImGuiWindowFlags_Popup)
-        return "(Popup)";
-    if ((window->Flags & ImGuiWindowFlags_MenuBar) && strcmp(window->Name, "##MainMenuBar") == 0)
-        return "(Main menu bar)";
-    return "(Untitled)";
-}
-
-// Overlay displayed when using CTRL+TAB. Called by EndFrame().
-void ImGui::NavUpdateWindowingList()
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavWindowingTarget != NULL);
-
-    if (g.NavWindowingTimer < NAV_WINDOWING_LIST_APPEAR_DELAY)
-        return;
-
-    if (g.NavWindowingList == NULL)
-        g.NavWindowingList = FindWindowByName("###NavWindowingList");
-    SetNextWindowSizeConstraints(ImVec2(g.IO.DisplaySize.x * 0.20f, g.IO.DisplaySize.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
-    SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
-    PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
-    Begin("###NavWindowingList", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings);
-    for (int n = g.Windows.Size - 1; n >= 0; n--)
-    {
-        ImGuiWindow* window = g.Windows[n];
-        if (!IsWindowNavFocusable(window))
-            continue;
-        const char* label = window->Name;
-        if (label == FindRenderedTextEnd(label))
-            label = GetFallbackWindowNameForWindowingList(window);
-        Selectable(label, g.NavWindowingTarget == window);
-    }
-    End();
-    PopStyleVar();
-}
-
-// Scroll to keep newly navigated item fully into view
-// NB: We modify rect_rel by the amount we scrolled for, so it is immediately updated.
-static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item_rect)
-{
-    ImRect window_rect(window->InnerMainRect.Min - ImVec2(1, 1), window->InnerMainRect.Max + ImVec2(1, 1));
-    //g.OverlayDrawList.AddRect(window_rect.Min, window_rect.Max, IM_COL32_WHITE); // [DEBUG]
-    if (window_rect.Contains(item_rect))
-        return;
-
-    ImGuiContext& g = *GImGui;
-    if (window->ScrollbarX && item_rect.Min.x < window_rect.Min.x)
-    {
-        window->ScrollTarget.x = item_rect.Min.x - window->Pos.x + window->Scroll.x - g.Style.ItemSpacing.x;
-        window->ScrollTargetCenterRatio.x = 0.0f;
-    }
-    else if (window->ScrollbarX && item_rect.Max.x >= window_rect.Max.x)
-    {
-        window->ScrollTarget.x = item_rect.Max.x - window->Pos.x + window->Scroll.x + g.Style.ItemSpacing.x;
-        window->ScrollTargetCenterRatio.x = 1.0f;
-    }
-    if (item_rect.Min.y < window_rect.Min.y)
-    {
-        window->ScrollTarget.y = item_rect.Min.y - window->Pos.y + window->Scroll.y - g.Style.ItemSpacing.y;
-        window->ScrollTargetCenterRatio.y = 0.0f;
-    }
-    else if (item_rect.Max.y >= window_rect.Max.y)
-    {
-        window->ScrollTarget.y = item_rect.Max.y - window->Pos.y + window->Scroll.y + g.Style.ItemSpacing.y;
-        window->ScrollTargetCenterRatio.y = 1.0f;
-    }
-}
-
-static void ImGui::NavUpdate()
-{
-    ImGuiContext& g = *GImGui;
-    g.IO.WantSetMousePos = false;
-
-#if 0
-    if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
-#endif
-
-    bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
-    bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
-
-    // Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
-    if (nav_gamepad_active)
-        if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
-            g.NavInputSource = ImGuiInputSource_NavGamepad;
-
-    // Update Keyboard->Nav inputs mapping
-    if (nav_keyboard_active)
-    {
-        #define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
-        NAV_MAP_KEY(ImGuiKey_Space,     ImGuiNavInput_Activate );
-        NAV_MAP_KEY(ImGuiKey_Enter,     ImGuiNavInput_Input    );
-        NAV_MAP_KEY(ImGuiKey_Escape,    ImGuiNavInput_Cancel   );
-        NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
-        NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
-        NAV_MAP_KEY(ImGuiKey_UpArrow,   ImGuiNavInput_KeyUp_   );
-        NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
-        if (g.IO.KeyCtrl)   g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
-        if (g.IO.KeyShift)  g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
-        if (g.IO.KeyAlt)    g.IO.NavInputs[ImGuiNavInput_KeyMenu_]  = 1.0f;
-        #undef NAV_MAP_KEY
-    }
-
-    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
-    for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
-        g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
-
-    // Process navigation init request (select first/default focus)
-    if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
-    {
-        // Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
-        IM_ASSERT(g.NavWindow);
-        if (g.NavInitRequestFromMove)
-            SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
-        else
-            SetNavID(g.NavInitResultId, g.NavLayer);
-        g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
-    }
-    g.NavInitRequest = false;
-    g.NavInitRequestFromMove = false;
-    g.NavInitResultId = 0;
-    g.NavJustMovedToId = 0;
-
-    // Process navigation move request
-    if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
-    {
-        // Select which result to use
-        ImGuiNavMoveResult* result = (g.NavMoveResultLocal.ID != 0) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
-
-        // PageUp/PageDown behavior first jumps to the bottom/top mostly visible item, _otherwise_ use the result from the previous/next page.
-        if (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet)
-            if (g.NavMoveResultLocalVisibleSet.ID != 0 && g.NavMoveResultLocalVisibleSet.ID != g.NavId)
-                result = &g.NavMoveResultLocalVisibleSet;
-
-        // Maybe entering a flattened child from the outside? In this case solve the tie using the regular scoring rules.
-        if (result != &g.NavMoveResultOther && g.NavMoveResultOther.ID != 0 && g.NavMoveResultOther.Window->ParentWindow == g.NavWindow)
-            if ((g.NavMoveResultOther.DistBox < result->DistBox) || (g.NavMoveResultOther.DistBox == result->DistBox && g.NavMoveResultOther.DistCenter < result->DistCenter))
-                result = &g.NavMoveResultOther;
-        IM_ASSERT(g.NavWindow && result->Window);
-
-        // Scroll to keep newly navigated item fully into view.
-        if (g.NavLayer == 0)
-        {
-            ImRect rect_abs = ImRect(result->RectRel.Min + result->Window->Pos, result->RectRel.Max + result->Window->Pos);
-            NavScrollToBringItemIntoView(result->Window, rect_abs);
-
-            // Estimate upcoming scroll so we can offset our result position so mouse position can be applied immediately after in NavUpdate()
-            ImVec2 next_scroll = CalcNextScrollFromScrollTargetAndClamp(result->Window, false);
-            ImVec2 delta_scroll = result->Window->Scroll - next_scroll;
-            result->RectRel.Translate(delta_scroll);
-
-            // Also scroll parent window to keep us into view if necessary (we could/should technically recurse back the whole the parent hierarchy).
-            if (result->Window->Flags & ImGuiWindowFlags_ChildWindow)
-                NavScrollToBringItemIntoView(result->Window->ParentWindow, ImRect(rect_abs.Min + delta_scroll, rect_abs.Max + delta_scroll));
-        }
-
-        // Apply result from previous frame navigation directional move request
-        ClearActiveID();
-        g.NavWindow = result->Window;
-        SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
-        g.NavJustMovedToId = result->ID;
-        g.NavMoveFromClampedRefRect = false;
-    }
-
-    // When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
-    if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
-    {
-        IM_ASSERT(g.NavMoveRequest);
-        if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
-            g.NavDisableHighlight = false;
-        g.NavMoveRequestForward = ImGuiNavForward_None;
-    }
-
-    // Apply application mouse position movement, after we had a chance to process move request result.
-    if (g.NavMousePosDirty && g.NavIdIsAlive)
-    {
-        // Set mouse position given our knowledge of the navigated item position from last frame
-        if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
-        {
-            if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
-            {
-                g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
-                g.IO.WantSetMousePos = true;
-            }
-        }
-        g.NavMousePosDirty = false;
-    }
-    g.NavIdIsAlive = false;
-    g.NavJustTabbedId = 0;
-    IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
-
-    // Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
-    if (g.NavWindow)
-        NavSaveLastChildNavWindow(g.NavWindow);
-    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
-        g.NavWindow->NavLastChildNavWindow = NULL;
-
-    NavUpdateWindowing();
-
-    // Set output flags for user application
-    g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
-    g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
-
-    // Process NavCancel input (to close a popup, get back to parent, clear focus)
-    if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
-    {
-        if (g.ActiveId != 0)
-        {
-            ClearActiveID();
-        }
-        else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
-        {
-            // Exit child window
-            ImGuiWindow* child_window = g.NavWindow;
-            ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
-            IM_ASSERT(child_window->ChildId != 0);
-            FocusWindow(parent_window);
-            SetNavID(child_window->ChildId, 0);
-            g.NavIdIsAlive = false;
-            if (g.NavDisableMouseHover)
-                g.NavMousePosDirty = true;
-        }
-        else if (g.OpenPopupStack.Size > 0)
-        {
-            // Close open popup/menu
-            if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
-                ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-        }
-        else if (g.NavLayer != 0)
-        {
-            // Leave the "menu" layer
-            NavRestoreLayer(0);
-        }
-        else
-        {
-            // Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
-            if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
-                g.NavWindow->NavLastIds[0] = 0;
-            g.NavId = 0;
-        }
-    }
-
-    // Process manual activation request
-    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
-    if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-    {
-        bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
-        bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
-        if (g.ActiveId == 0 && activate_pressed)
-            g.NavActivateId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
-            g.NavActivateDownId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
-            g.NavActivatePressedId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
-            g.NavInputId = g.NavId;
-    }
-    if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-        g.NavDisableHighlight = true;
-    if (g.NavActivateId != 0)
-        IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
-    g.NavMoveRequest = false;
-
-    // Process programmatic activation request
-    if (g.NavNextActivateId != 0)
-        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
-    g.NavNextActivateId = 0;
-
-    // Initiate directional inputs request
-    const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
-    if (g.NavMoveRequestForward == ImGuiNavForward_None)
-    {
-        g.NavMoveDir = ImGuiDir_None;
-        g.NavMoveRequestFlags = 0;
-        if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-        {
-            if ((allowed_dir_flags & (1<<ImGuiDir_Left))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Up))    && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp,   ImGuiNavInput_KeyUp_,   ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Down))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
-        }
-        g.NavMoveClipDir = g.NavMoveDir;
-    }
-    else
-    {
-        // Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
-        // (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
-        IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
-        IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
-        g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
-    }
-
-    // PageUp/PageDown scroll
-    float nav_scoring_rect_offset_y = 0.0f;
-    if (nav_keyboard_active && g.NavMoveDir == ImGuiDir_None && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget && g.NavLayer == 0)
-    {
-        ImGuiWindow* window = g.NavWindow;
-        bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && (allowed_dir_flags & (1 << ImGuiDir_Up));
-        bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && (allowed_dir_flags & (1 << ImGuiDir_Down));
-        if ((page_up_held && !page_down_held) || (page_down_held && !page_up_held))
-        {
-            if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
-            {
-                // Fallback manual-scroll when window has no navigable item
-                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
-                    SetWindowScrollY(window, window->Scroll.y - window->InnerClipRect.GetHeight());
-                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
-                    SetWindowScrollY(window, window->Scroll.y + window->InnerClipRect.GetHeight());
-            }
-            else
-            {
-                const ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
-                const float page_offset_y = ImMax(0.0f, window->InnerClipRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
-                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
-                {
-                    nav_scoring_rect_offset_y = -page_offset_y;
-                    g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
-                    g.NavMoveClipDir = ImGuiDir_Up;
-                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
-                }
-                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
-                {
-                    nav_scoring_rect_offset_y = +page_offset_y;
-                    g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
-                    g.NavMoveClipDir = ImGuiDir_Down;
-                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
-                }
-            }
-        }
-    }
-
-    if (g.NavMoveDir != ImGuiDir_None)
-    {
-        g.NavMoveRequest = true;
-        g.NavMoveDirLast = g.NavMoveDir;
-    }
-
-    // If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
-    if (g.NavMoveRequest && g.NavId == 0)
-    {
-        g.NavInitRequest = g.NavInitRequestFromMove = true;
-        g.NavInitResultId = 0;
-        g.NavDisableHighlight = false;
-    }
-
-    NavUpdateAnyRequestFlag();
-
-    // Scrolling
-    if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
-    {
-        // *Fallback* manual-scroll with Nav directional keys when window has no navigable item
-        ImGuiWindow* window = g.NavWindow;
-        const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
-        if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
-        {
-            if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
-                SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
-            if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
-                SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
-        }
-
-        // *Normal* Manual scroll with NavScrollXXX keys
-        // Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
-        ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
-        if (scroll_dir.x != 0.0f && window->ScrollbarX)
-        {
-            SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
-            g.NavMoveFromClampedRefRect = true;
-        }
-        if (scroll_dir.y != 0.0f)
-        {
-            SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
-            g.NavMoveFromClampedRefRect = true;
-        }
-    }
-
-    // Reset search results
-    g.NavMoveResultLocal.Clear();
-    g.NavMoveResultLocalVisibleSet.Clear();
-    g.NavMoveResultOther.Clear();
-
-    // When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
-    if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
-    {
-        ImGuiWindow* window = g.NavWindow;
-        ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
-        if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
-        {
-            float pad = window->CalcFontSize() * 0.5f;
-            window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
-            window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
-            g.NavId = 0;
-        }
-        g.NavMoveFromClampedRefRect = false;
-    }
-
-    // For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
-    ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
-    g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
-    g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
-    g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
-    g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
-    IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
-    //g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
-    g.NavScoringCount = 0;
-#if IMGUI_DEBUG_NAV_RECTS
-    if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
-    if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
-#endif
-}
-
 void ImGui::StartMouseMovingWindow(ImGuiWindow* window)
 {
     // Set ActiveId even if the _NoMove flag is set. Without it, dragging away from a window with _NoMove would activate hover on other windows.
@@ -4010,65 +3013,6 @@
     Begin("Debug##Default");
 }
 
-static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
-{
-    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHash(name, 0));
-    if (!settings)
-        settings = CreateNewWindowSettings(name);
-    return (void*)settings;
-}
-
-static void SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
-{
-    ImGuiWindowSettings* settings = (ImGuiWindowSettings*)entry;
-    float x, y;
-    int i;
-    if (sscanf(line, "Pos=%f,%f", &x, &y) == 2)         settings->Pos = ImVec2(x, y);
-    else if (sscanf(line, "Size=%f,%f", &x, &y) == 2)   settings->Size = ImMax(ImVec2(x, y), GImGui->Style.WindowMinSize);
-    else if (sscanf(line, "Collapsed=%d", &i) == 1)     settings->Collapsed = (i != 0);
-}
-
-static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
-{
-    // Gather data from windows that were active during this session
-    ImGuiContext& g = *imgui_ctx;
-    for (int i = 0; i != g.Windows.Size; i++)
-    {
-        ImGuiWindow* window = g.Windows[i];
-        if (window->Flags & ImGuiWindowFlags_NoSavedSettings)
-            continue;
-
-        ImGuiWindowSettings* settings = (window->SettingsIdx != -1) ? &g.SettingsWindows[window->SettingsIdx] : ImGui::FindWindowSettings(window->ID);
-        if (!settings)
-        {
-            settings = CreateNewWindowSettings(window->Name);
-            window->SettingsIdx = g.SettingsWindows.index_from_pointer(settings);
-        }
-        IM_ASSERT(settings->ID == window->ID);
-        settings->Pos = window->Pos;
-        settings->Size = window->SizeFull;
-        settings->Collapsed = window->Collapsed;
-    }
-
-    // Write a buffer
-    // If a window wasn't opened in this session we preserve its settings
-    buf->reserve(buf->size() + g.SettingsWindows.Size * 96); // ballpark reserve
-    for (int i = 0; i != g.SettingsWindows.Size; i++)
-    {
-        const ImGuiWindowSettings* settings = &g.SettingsWindows[i];
-        if (settings->Pos.x == FLT_MAX)
-            continue;
-        const char* name = settings->Name;
-        if (const char* p = strstr(name, "###"))  // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID()
-            name = p;
-        buf->appendf("[%s][%s]\n", handler->TypeName, name);
-        buf->appendf("Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
-        buf->appendf("Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
-        buf->appendf("Collapsed=%d\n", settings->Collapsed);
-        buf->appendf("\n");
-    }
-}
-
 void ImGui::Initialize(ImGuiContext* context)
 {
     ImGuiContext& g = *context;
@@ -4143,154 +3087,6 @@
     g.Initialized = false;
 }
 
-ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = 0; i != g.SettingsWindows.Size; i++)
-        if (g.SettingsWindows[i].ID == id)
-            return &g.SettingsWindows[i];
-    return NULL;
-}
-
-static ImGuiWindowSettings* CreateNewWindowSettings(const char* name)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsWindows.push_back(ImGuiWindowSettings());
-    ImGuiWindowSettings* settings = &g.SettingsWindows.back();
-    settings->Name = ImStrdup(name);
-    settings->ID = ImHash(name, 0);
-    return settings;
-}
-
-void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
-{
-    size_t file_data_size = 0;
-    char* file_data = (char*)ImFileLoadToMemory(ini_filename, "rb", &file_data_size);
-    if (!file_data)
-        return;
-    LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
-    ImGui::MemFree(file_data);
-}
-
-ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
-{
-    ImGuiContext& g = *GImGui;
-    const ImGuiID type_hash = ImHash(type_name, 0, 0);
-    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
-        if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
-            return &g.SettingsHandlers[handler_n];
-    return NULL;
-}
-
-// Zero-tolerance, no error reporting, cheap .ini parsing
-void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.Initialized);
-    IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
-
-    // For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
-    // For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
-    if (ini_size == 0)
-        ini_size = strlen(ini_data);
-    char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
-    char* buf_end = buf + ini_size;
-    memcpy(buf, ini_data, ini_size);
-    buf[ini_size] = 0;
-
-    void* entry_data = NULL;
-    ImGuiSettingsHandler* entry_handler = NULL;
-
-    char* line_end = NULL;
-    for (char* line = buf; line < buf_end; line = line_end + 1)
-    {
-        // Skip new lines markers, then find end of the line
-        while (*line == '\n' || *line == '\r')
-            line++;
-        line_end = line;
-        while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
-            line_end++;
-        line_end[0] = 0;
-
-        if (line[0] == '[' && line_end > line && line_end[-1] == ']')
-        {
-            // Parse "[Type][Name]". Note that 'Name' can itself contains [] characters, which is acceptable with the current format and parsing code.
-            line_end[-1] = 0;
-            const char* name_end = line_end - 1;
-            const char* type_start = line + 1;
-            char* type_end = (char*)(intptr_t)ImStrchrRange(type_start, name_end, ']');
-            const char* name_start = type_end ? ImStrchrRange(type_end + 1, name_end, '[') : NULL;
-            if (!type_end || !name_start)
-            {
-                name_start = type_start; // Import legacy entries that have no type
-                type_start = "Window";
-            }
-            else
-            {
-                *type_end = 0; // Overwrite first ']'
-                name_start++;  // Skip second '['
-            }
-            entry_handler = FindSettingsHandler(type_start);
-            entry_data = entry_handler ? entry_handler->ReadOpenFn(&g, entry_handler, name_start) : NULL;
-        }
-        else if (entry_handler != NULL && entry_data != NULL)
-        {
-            // Let type handler parse the line
-            entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
-        }
-    }
-    ImGui::MemFree(buf);
-    g.SettingsLoaded = true;
-}
-
-void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsDirtyTimer = 0.0f;
-    if (!ini_filename)
-        return;
-
-    size_t ini_data_size = 0;
-    const char* ini_data = SaveIniSettingsToMemory(&ini_data_size);
-    FILE* f = ImFileOpen(ini_filename, "wt");
-    if (!f)
-        return;
-    fwrite(ini_data, sizeof(char), ini_data_size, f);
-    fclose(f);
-}
-
-// Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer
-const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsDirtyTimer = 0.0f;
-    g.SettingsIniData.Buf.resize(0);
-    g.SettingsIniData.Buf.push_back(0);
-    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
-    {
-        ImGuiSettingsHandler* handler = &g.SettingsHandlers[handler_n];
-        handler->WriteAllFn(&g, handler, &g.SettingsIniData);
-    }
-    if (out_size)
-        *out_size = (size_t)g.SettingsIniData.size();
-    return g.SettingsIniData.c_str();
-}
-
-void ImGui::MarkIniSettingsDirty()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.SettingsDirtyTimer <= 0.0f)
-        g.SettingsDirtyTimer = g.IO.IniSavingRate;
-}
-
-void ImGui::MarkIniSettingsDirty(ImGuiWindow* window)
-{
-    ImGuiContext& g = *GImGui;
-    if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings))
-        if (g.SettingsDirtyTimer <= 0.0f)
-            g.SettingsDirtyTimer = g.IO.IniSavingRate;
-}
-
 // FIXME: Add a more explicit sort order in the window structure.
 static int IMGUI_CDECL ChildWindowComparer(const void* lhs, const void* rhs)
 {
@@ -4588,74 +3384,6 @@
     return text_display_end;
 }
 
-// Pass text data straight to log (without being displayed)
-void ImGui::LogText(const char* fmt, ...)
-{
-    ImGuiContext& g = *GImGui;
-    if (!g.LogEnabled)
-        return;
-
-    va_list args;
-    va_start(args, fmt);
-    if (g.LogFile)
-        vfprintf(g.LogFile, fmt, args);
-    else
-        g.LogClipboard.appendfv(fmt, args);
-    va_end(args);
-}
-
-// Internal version that takes a position to decide on newline placement and pad items according to their depth.
-// We split text into individual lines to add current tree level padding
-void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    if (!text_end)
-        text_end = ImGui::FindRenderedTextEnd(text, text_end);
-
-    const bool log_new_line = ref_pos && (ref_pos->y > window->DC.LogLinePosY + 1);
-    if (ref_pos)
-        window->DC.LogLinePosY = ref_pos->y;
-
-    const char* text_remaining = text;
-    if (g.LogStartDepth > window->DC.TreeDepth)  // Re-adjust padding if we have popped out of our starting depth
-        g.LogStartDepth = window->DC.TreeDepth;
-    const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth);
-    for (;;)
-    {
-        // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry.
-        const char* line_end = text_remaining;
-        while (line_end < text_end)
-            if (*line_end == '\n')
-                break;
-            else
-                line_end++;
-        if (line_end >= text_end)
-            line_end = NULL;
-
-        const bool is_first_line = (text == text_remaining);
-        bool is_last_line = false;
-        if (line_end == NULL)
-        {
-            is_last_line = true;
-            line_end = text_end;
-        }
-        if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
-        {
-            const int char_count = (int)(line_end - text_remaining);
-            if (log_new_line || !is_first_line)
-                ImGui::LogText(IM_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining);
-            else
-                ImGui::LogText(" %.*s", char_count, text_remaining);
-        }
-
-        if (is_last_line)
-            break;
-        text_remaining = line_end + 1;
-    }
-}
-
 // Internal ImGui functions to render text
 // RenderText***() functions calls ImDrawList::AddText() calls ImBitmapFont::RenderText()
 void ImGui::RenderText(ImVec2 pos, const char* text, const char* text_end, bool hide_text_after_hash)
@@ -5257,376 +3985,6 @@
     return ImRect(0.0f, 0.0f, g.IO.DisplaySize.x, g.IO.DisplaySize.y);
 }
 
-// Not exposed publicly as BeginTooltip() because bool parameters are evil. Let's see if other needs arise first.
-void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, bool override_previous_tooltip)
-{
-    ImGuiContext& g = *GImGui;
-    char window_name[16];
-    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
-    if (override_previous_tooltip)
-        if (ImGuiWindow* window = FindWindowByName(window_name))
-            if (window->Active)
-            {
-                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
-                window->Hidden = true;
-                window->HiddenFramesRegular = 1;
-                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
-            }
-    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoInputs|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoNav;
-    Begin(window_name, NULL, flags | extra_flags);
-}
-
-void ImGui::SetTooltipV(const char* fmt, va_list args)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.DragDropWithinSourceOrTarget)
-        BeginTooltip();
-    else
-        BeginTooltipEx(0, true);
-    TextV(fmt, args);
-    EndTooltip();
-}
-
-void ImGui::SetTooltip(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    SetTooltipV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::BeginTooltip()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.DragDropWithinSourceOrTarget)
-    {
-        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
-        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
-        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
-        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
-        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
-        SetNextWindowPos(tooltip_pos);
-        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
-        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
-        BeginTooltipEx(0, true);
-    }
-    else
-    {
-        BeginTooltipEx(0, false);
-    }
-}
-
-void ImGui::EndTooltip()
-{
-    IM_ASSERT(GetCurrentWindowRead()->Flags & ImGuiWindowFlags_Tooltip);   // Mismatched BeginTooltip()/EndTooltip() calls
-    End();
-}
-
-// Mark popup as open (toggle toward open state).
-// Popups are closed when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
-// Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
-// One open popup per level of the popup hierarchy (NB: when assigning we reset the Window member of ImGuiPopupRef to NULL)
-void ImGui::OpenPopupEx(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* parent_window = g.CurrentWindow;
-    int current_stack_size = g.CurrentPopupStack.Size;
-    ImGuiPopupRef popup_ref; // Tagged as new ref as Window will be set back to NULL if we write this into OpenPopupStack.
-    popup_ref.PopupId = id;
-    popup_ref.Window = NULL;
-    popup_ref.ParentWindow = parent_window;
-    popup_ref.OpenFrameCount = g.FrameCount;
-    popup_ref.OpenParentId = parent_window->IDStack.back();
-    popup_ref.OpenMousePos = g.IO.MousePos;
-    popup_ref.OpenPopupPos = NavCalcPreferredRefPos();
-
-    //printf("[%05d] OpenPopupEx(0x%08X)\n", g.FrameCount, id);
-    if (g.OpenPopupStack.Size < current_stack_size + 1)
-    {
-        g.OpenPopupStack.push_back(popup_ref);
-    }
-    else
-    {
-        // Gently handle the user mistakenly calling OpenPopup() every frame. It is a programming mistake! However, if we were to run the regular code path, the ui
-        // would become completely unusable because the popup will always be in hidden-while-calculating-size state _while_ claiming focus. Which would be a very confusing
-        // situation for the programmer. Instead, we silently allow the popup to proceed, it will keep reappearing and the programming error will be more obvious to understand.
-        if (g.OpenPopupStack[current_stack_size].PopupId == id && g.OpenPopupStack[current_stack_size].OpenFrameCount == g.FrameCount - 1)
-        {
-            g.OpenPopupStack[current_stack_size].OpenFrameCount = popup_ref.OpenFrameCount;
-        }
-        else
-        {
-            // Close child popups if any, then flag popup for open/reopen
-            g.OpenPopupStack.resize(current_stack_size + 1);
-            g.OpenPopupStack[current_stack_size] = popup_ref;
-        }
-
-        // When reopening a popup we first refocus its parent, otherwise if its parent is itself a popup it would get closed by ClosePopupsOverWindow().
-        // This is equivalent to what ClosePopupToLevel() does.
-        //if (g.OpenPopupStack[current_stack_size].PopupId == id)
-        //    FocusWindow(parent_window);
-    }
-}
-
-void ImGui::OpenPopup(const char* str_id)
-{
-    ImGuiContext& g = *GImGui;
-    OpenPopupEx(g.CurrentWindow->GetID(str_id));
-}
-
-void ImGui::ClosePopupsOverWindow(ImGuiWindow* ref_window)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.OpenPopupStack.empty())
-        return;
-
-    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
-    // Don't close our own child popup windows.
-    int n = 0;
-    if (ref_window)
-    {
-        for (n = 0; n < g.OpenPopupStack.Size; n++)
-        {
-            ImGuiPopupRef& popup = g.OpenPopupStack[n];
-            if (!popup.Window)
-                continue;
-            IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
-            if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
-                continue;
-
-            // Trim the stack if popups are not direct descendant of the reference window (which is often the NavWindow)
-            bool has_focus = false;
-            for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
-                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
-            if (!has_focus)
-                break;
-        }
-    }
-    if (n < g.OpenPopupStack.Size) // This test is not required but it allows to set a convenient breakpoint on the block below
-        ClosePopupToLevel(n);
-}
-
-ImGuiWindow* ImGui::GetFrontMostPopupModal()
-{
-    ImGuiContext& g = *GImGui;
-    for (int n = g.OpenPopupStack.Size-1; n >= 0; n--)
-        if (ImGuiWindow* popup = g.OpenPopupStack.Data[n].Window)
-            if (popup->Flags & ImGuiWindowFlags_Modal)
-                return popup;
-    return NULL;
-}
-
-void ImGui::ClosePopupToLevel(int remaining)
-{
-    IM_ASSERT(remaining >= 0);
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* focus_window = (remaining > 0) ? g.OpenPopupStack[remaining-1].Window : g.OpenPopupStack[0].ParentWindow;
-    if (g.NavLayer == 0)
-        focus_window = NavRestoreLastChildNavWindow(focus_window);
-    FocusWindow(focus_window);
-    focus_window->DC.NavHideHighlightOneFrame = true;
-    g.OpenPopupStack.resize(remaining);
-}
-
-void ImGui::ClosePopup(ImGuiID id)
-{
-    if (!IsPopupOpen(id))
-        return;
-    ImGuiContext& g = *GImGui;
-    ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-}
-
-// Close the popup we have begin-ed into.
-void ImGui::CloseCurrentPopup()
-{
-    ImGuiContext& g = *GImGui;
-    int popup_idx = g.CurrentPopupStack.Size - 1;
-    if (popup_idx < 0 || popup_idx >= g.OpenPopupStack.Size || g.CurrentPopupStack[popup_idx].PopupId != g.OpenPopupStack[popup_idx].PopupId)
-        return;
-    while (popup_idx > 0 && g.OpenPopupStack[popup_idx].Window && (g.OpenPopupStack[popup_idx].Window->Flags & ImGuiWindowFlags_ChildMenu))
-        popup_idx--;
-    ClosePopupToLevel(popup_idx);
-}
-
-bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (!IsPopupOpen(id))
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-
-    char name[20];
-    if (extra_flags & ImGuiWindowFlags_ChildMenu)
-        ImFormatString(name, IM_ARRAYSIZE(name), "##Menu_%02d", g.CurrentPopupStack.Size);    // Recycle windows based on depth
-    else
-        ImFormatString(name, IM_ARRAYSIZE(name), "##Popup_%08x", id); // Not recycling, so we can close/open during the same frame
-
-    bool is_open = Begin(name, NULL, extra_flags | ImGuiWindowFlags_Popup);
-    if (!is_open) // NB: Begin can return false when the popup is completely clipped (e.g. zero size display)
-        EndPopup();
-
-    return is_open;
-}
-
-bool ImGui::BeginPopup(const char* str_id, ImGuiWindowFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.OpenPopupStack.Size <= g.CurrentPopupStack.Size) // Early out for performance
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-    return BeginPopupEx(g.CurrentWindow->GetID(str_id), flags|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::IsPopupOpen(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == id;
-}
-
-bool ImGui::IsPopupOpen(const char* str_id)
-{
-    ImGuiContext& g = *GImGui;
-    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == g.CurrentWindow->GetID(str_id);
-}
-
-bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    const ImGuiID id = window->GetID(name);
-    if (!IsPopupOpen(id))
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-
-    // Center modal windows by default
-    // FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
-    if (g.NextWindowData.PosCond == 0)
-        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
-
-    bool is_open = Begin(name, p_open, flags | ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
-    if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-    {
-        EndPopup();
-        if (is_open)
-            ClosePopup(id);
-        return false;
-    }
-
-    return is_open;
-}
-
-void ImGui::NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, const ImRect& bb_rel, ImGuiNavMoveFlags move_flags)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_None);
-    ImGui::NavMoveRequestCancel();
-    g.NavMoveDir = move_dir;
-    g.NavMoveClipDir = clip_dir;
-    g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
-    g.NavMoveRequestFlags = move_flags;
-    g.NavWindow->NavRectRel[g.NavLayer] = bb_rel;
-}
-
-void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.NavWindow != window || !NavMoveRequestButNoResultYet() || g.NavMoveRequestForward != ImGuiNavForward_None || g.NavLayer != 0)
-        return;
-    IM_ASSERT(move_flags != 0); // No points calling this with no wrapping
-    ImRect bb_rel = window->NavRectRel[0];
-
-    ImGuiDir clip_dir = g.NavMoveDir;
-    if (g.NavMoveDir == ImGuiDir_Left && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
-    {
-        bb_rel.Min.x = bb_rel.Max.x = ImMax(window->SizeFull.x, window->SizeContents.x) - window->Scroll.x;
-        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(-bb_rel.GetHeight()); clip_dir = ImGuiDir_Up; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Right && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
-    {
-        bb_rel.Min.x = bb_rel.Max.x = -window->Scroll.x;
-        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(+bb_rel.GetHeight()); clip_dir = ImGuiDir_Down; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Up && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
-    {
-        bb_rel.Min.y = bb_rel.Max.y = ImMax(window->SizeFull.y, window->SizeContents.y) - window->Scroll.y;
-        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(-bb_rel.GetWidth()); clip_dir = ImGuiDir_Left; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Down && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
-    {
-        bb_rel.Min.y = bb_rel.Max.y = -window->Scroll.y;
-        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(+bb_rel.GetWidth()); clip_dir = ImGuiDir_Right; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-}
-
-void ImGui::EndPopup()
-{
-    ImGuiContext& g = *GImGui; (void)g;
-    IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup);  // Mismatched BeginPopup()/EndPopup() calls
-    IM_ASSERT(g.CurrentPopupStack.Size > 0);
-
-    // Make all menus and popups wrap around for now, may need to expose that policy.
-    NavMoveRequestTryWrapping(g.CurrentWindow, ImGuiNavMoveFlags_LoopY);
-
-    End();
-}
-
-bool ImGui::OpenPopupOnItemClick(const char* str_id, int mouse_button)
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-    {
-        ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
-        IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
-        OpenPopupEx(id);
-        return true;
-    }
-    return false;
-}
-
-// This is a helper to handle the simplest case of associating one named popup to one given widget.
-// You may want to handle this on user side if you have specific needs (e.g. tweaking IsItemHovered() parameters).
-// You can pass a NULL str_id to use the identifier of the last item.
-bool ImGui::BeginPopupContextItem(const char* str_id, int mouse_button)
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
-    IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
-    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-        OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::BeginPopupContextWindow(const char* str_id, int mouse_button, bool also_over_items)
-{
-    if (!str_id)
-        str_id = "window_context";
-    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
-    if (IsMouseReleased(mouse_button) && IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-        if (also_over_items || !IsAnyItemHovered())
-            OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::BeginPopupContextVoid(const char* str_id, int mouse_button)
-{
-    if (!str_id)
-        str_id = "void_context";
-    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
-    if (IsMouseReleased(mouse_button) && !IsWindowHovered(ImGuiHoveredFlags_AnyWindow))
-        OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
 static bool ImGui::BeginChildEx(const char* name, ImGuiID id, const ImVec2& size_arg, bool border, ImGuiWindowFlags flags)
 {
     ImGuiContext& g = *GImGui;
@@ -5670,7 +4028,6 @@
         SetActiveID(id+1, child_window); // Steal ActiveId with a dummy id so that key-press won't activate child item
         g.ActiveIdSource = ImGuiInputSource_Nav;
     }
-
     return ret;
 }
 
@@ -5761,112 +4118,6 @@
     IM_ASSERT(p_backup == window->DC.StackSizesBackup + IM_ARRAYSIZE(window->DC.StackSizesBackup));
 }
 
-ImRect ImGui::GetWindowAllowedExtentRect(ImGuiWindow*)
-{
-    ImVec2 padding = GImGui->Style.DisplaySafeAreaPadding;
-    ImRect r_screen = GetViewportRect();
-    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
-    return r_screen;
-}
-
-// r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
-// r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
-ImVec2 ImGui::FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy)
-{
-    ImVec2 base_pos_clamped = ImClamp(ref_pos, r_outer.Min, r_outer.Max - size);
-    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
-    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
-
-    // Combo Box policy (we want a connecting edge)
-    if (policy == ImGuiPopupPositionPolicy_ComboBox)
-    {
-        const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Down, ImGuiDir_Right, ImGuiDir_Left, ImGuiDir_Up };
-        for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
-        {
-            const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
-            if (n != -1 && dir == *last_dir) // Already tried this direction?
-                continue;
-            ImVec2 pos;
-            if (dir == ImGuiDir_Down)  pos = ImVec2(r_avoid.Min.x, r_avoid.Max.y);          // Below, Toward Right (default)
-            if (dir == ImGuiDir_Right) pos = ImVec2(r_avoid.Min.x, r_avoid.Min.y - size.y); // Above, Toward Right
-            if (dir == ImGuiDir_Left)  pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Max.y); // Below, Toward Left
-            if (dir == ImGuiDir_Up)    pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Min.y - size.y); // Above, Toward Left
-            if (!r_outer.Contains(ImRect(pos, pos + size)))
-                continue;
-            *last_dir = dir;
-            return pos;
-        }
-    }
-
-    // Default popup policy
-    const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
-    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
-    {
-        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
-        if (n != -1 && dir == *last_dir) // Already tried this direction?
-            continue;
-        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
-        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
-        if (avail_w < size.x || avail_h < size.y)
-            continue;
-        ImVec2 pos;
-        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
-        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
-        *last_dir = dir;
-        return pos;
-    }
-
-    // Fallback, try to keep within display
-    *last_dir = ImGuiDir_None;
-    ImVec2 pos = ref_pos;
-    pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
-    pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
-    return pos;
-}
-
-ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
-{
-    ImGuiContext& g = *GImGui;
-
-    ImRect r_outer = GetWindowAllowedExtentRect(window);
-    if (window->Flags & ImGuiWindowFlags_ChildMenu)
-    {
-        // Child menus typically request _any_ position within the parent menu item, and then our FindBestWindowPosForPopup() function will move the new menu outside the parent bounds.
-        // This is how we end up with child menus appearing (most-commonly) on the right of the parent menu.
-        IM_ASSERT(g.CurrentWindow == window);
-        ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.Size - 2];
-        float horizontal_overlap = g.Style.ItemSpacing.x;       // We want some overlap to convey the relative depth of each menu (currently the amount of overlap is hard-coded to style.ItemSpacing.x).
-        ImRect r_avoid;
-        if (parent_window->DC.MenuBarAppending)
-            r_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
-        else
-            r_avoid = ImRect(parent_window->Pos.x + horizontal_overlap, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - horizontal_overlap - parent_window->ScrollbarSizes.x, FLT_MAX);
-        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-    }
-    if (window->Flags & ImGuiWindowFlags_Popup)
-    {
-        ImRect r_avoid = ImRect(window->Pos.x - 1, window->Pos.y - 1, window->Pos.x + 1, window->Pos.y + 1);
-        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-    }
-    if (window->Flags & ImGuiWindowFlags_Tooltip)
-    {
-        // Position tooltip (always follows mouse)
-        float sc = g.Style.MouseCursorScale;
-        ImVec2 ref_pos = NavCalcPreferredRefPos();
-        ImRect r_avoid;
-        if (!g.NavDisableHighlight && g.NavDisableMouseHover && !(g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos))
-            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 16, ref_pos.y + 8);
-        else
-            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24 * sc, ref_pos.y + 24 * sc); // FIXME: Hard-coded based on mouse cursor shape expectation. Exact dimension not very important.
-        ImVec2 pos = FindBestWindowPosForPopupEx(ref_pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-        if (window->AutoPosLastDirection == ImGuiDir_None)
-            pos = ref_pos + ImVec2(2, 2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
-        return pos;
-    }
-    IM_ASSERT(0);
-    return window->Pos;
-}
-
 static void SetWindowConditionAllowFlags(ImGuiWindow* window, ImGuiCond flags, bool enabled)
 {
     window->SetWindowPosAllowFlags       = enabled ? (window->SetWindowPosAllowFlags       | flags) : (window->SetWindowPosAllowFlags       & ~flags);
@@ -6843,116 +5094,6 @@
     SetCurrentWindow(g.CurrentWindowStack.empty() ? NULL : g.CurrentWindowStack.back());
 }
 
-// Vertical scrollbar
-// The entire piece of code below is rather confusing because:
-// - We handle absolute seeking (when first clicking outside the grab) and relative manipulation (afterward or when clicking inside the grab)
-// - We store values as normalized ratio and in a form that allows the window content to change while we are holding on a scrollbar
-// - We handle both horizontal and vertical scrollbars, which makes the terminology not ideal.
-void ImGui::Scrollbar(ImGuiLayoutType direction)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    const bool horizontal = (direction == ImGuiLayoutType_Horizontal);
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(horizontal ? "#SCROLLX" : "#SCROLLY");
-
-    // Render background
-    bool other_scrollbar = (horizontal ? window->ScrollbarY : window->ScrollbarX);
-    float other_scrollbar_size_w = other_scrollbar ? style.ScrollbarSize : 0.0f;
-    const ImRect window_rect = window->Rect();
-    const float border_size = window->WindowBorderSize;
-    ImRect bb = horizontal
-        ? ImRect(window->Pos.x + border_size, window_rect.Max.y - style.ScrollbarSize, window_rect.Max.x - other_scrollbar_size_w - border_size, window_rect.Max.y - border_size)
-        : ImRect(window_rect.Max.x - style.ScrollbarSize, window->Pos.y + border_size, window_rect.Max.x - border_size, window_rect.Max.y - other_scrollbar_size_w - border_size);
-    if (!horizontal)
-        bb.Min.y += window->TitleBarHeight() + ((window->Flags & ImGuiWindowFlags_MenuBar) ? window->MenuBarHeight() : 0.0f);
-    if (bb.GetWidth() <= 0.0f || bb.GetHeight() <= 0.0f)
-        return;
-
-    int window_rounding_corners;
-    if (horizontal)
-        window_rounding_corners = ImDrawCornerFlags_BotLeft | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
-    else
-        window_rounding_corners = (((window->Flags & ImGuiWindowFlags_NoTitleBar) && !(window->Flags & ImGuiWindowFlags_MenuBar)) ? ImDrawCornerFlags_TopRight : 0) | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
-    window->DrawList->AddRectFilled(bb.Min, bb.Max, GetColorU32(ImGuiCol_ScrollbarBg), window->WindowRounding, window_rounding_corners);
-    bb.Expand(ImVec2(-ImClamp((float)(int)((bb.Max.x - bb.Min.x - 2.0f) * 0.5f), 0.0f, 3.0f), -ImClamp((float)(int)((bb.Max.y - bb.Min.y - 2.0f) * 0.5f), 0.0f, 3.0f)));
-
-    // V denote the main, longer axis of the scrollbar (= height for a vertical scrollbar)
-    float scrollbar_size_v = horizontal ? bb.GetWidth() : bb.GetHeight();
-    float scroll_v = horizontal ? window->Scroll.x : window->Scroll.y;
-    float win_size_avail_v = (horizontal ? window->SizeFull.x : window->SizeFull.y) - other_scrollbar_size_w;
-    float win_size_contents_v = horizontal ? window->SizeContents.x : window->SizeContents.y;
-
-    // Calculate the height of our grabbable box. It generally represent the amount visible (vs the total scrollable amount)
-    // But we maintain a minimum size in pixel to allow for the user to still aim inside.
-    IM_ASSERT(ImMax(win_size_contents_v, win_size_avail_v) > 0.0f); // Adding this assert to check if the ImMax(XXX,1.0f) is still needed. PLEASE CONTACT ME if this triggers.
-    const float win_size_v = ImMax(ImMax(win_size_contents_v, win_size_avail_v), 1.0f);
-    const float grab_h_pixels = ImClamp(scrollbar_size_v * (win_size_avail_v / win_size_v), style.GrabMinSize, scrollbar_size_v);
-    const float grab_h_norm = grab_h_pixels / scrollbar_size_v;
-
-    // Handle input right away. None of the code of Begin() is relying on scrolling position before calling Scrollbar().
-    bool held = false;
-    bool hovered = false;
-    const bool previously_held = (g.ActiveId == id);
-    ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_NoNavFocus);
-
-    float scroll_max = ImMax(1.0f, win_size_contents_v - win_size_avail_v);
-    float scroll_ratio = ImSaturate(scroll_v / scroll_max);
-    float grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
-    if (held && grab_h_norm < 1.0f)
-    {
-        float scrollbar_pos_v = horizontal ? bb.Min.x : bb.Min.y;
-        float mouse_pos_v = horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
-        float* click_delta_to_grab_center_v = horizontal ? &g.ScrollbarClickDeltaToGrabCenter.x : &g.ScrollbarClickDeltaToGrabCenter.y;
-
-        // Click position in scrollbar normalized space (0.0f->1.0f)
-        const float clicked_v_norm = ImSaturate((mouse_pos_v - scrollbar_pos_v) / scrollbar_size_v);
-        SetHoveredID(id);
-
-        bool seek_absolute = false;
-        if (!previously_held)
-        {
-            // On initial click calculate the distance between mouse and the center of the grab
-            if (clicked_v_norm >= grab_v_norm && clicked_v_norm <= grab_v_norm + grab_h_norm)
-            {
-                *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
-            }
-            else
-            {
-                seek_absolute = true;
-                *click_delta_to_grab_center_v = 0.0f;
-            }
-        }
-
-        // Apply scroll
-        // It is ok to modify Scroll here because we are being called in Begin() after the calculation of SizeContents and before setting up our starting position
-        const float scroll_v_norm = ImSaturate((clicked_v_norm - *click_delta_to_grab_center_v - grab_h_norm*0.5f) / (1.0f - grab_h_norm));
-        scroll_v = (float)(int)(0.5f + scroll_v_norm * scroll_max);//(win_size_contents_v - win_size_v));
-        if (horizontal)
-            window->Scroll.x = scroll_v;
-        else
-            window->Scroll.y = scroll_v;
-
-        // Update values for rendering
-        scroll_ratio = ImSaturate(scroll_v / scroll_max);
-        grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
-
-        // Update distance to grab now that we have seeked and saturated
-        if (seek_absolute)
-            *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
-    }
-
-    // Render
-    const ImU32 grab_col = GetColorU32(held ? ImGuiCol_ScrollbarGrabActive : hovered ? ImGuiCol_ScrollbarGrabHovered : ImGuiCol_ScrollbarGrab);
-    ImRect grab_rect;
-    if (horizontal)
-        grab_rect = ImRect(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm), bb.Min.y, ImMin(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm) + grab_h_pixels, window_rect.Max.x), bb.Max.y);
-    else
-        grab_rect = ImRect(bb.Min.x, ImLerp(bb.Min.y, bb.Max.y, grab_v_norm), bb.Max.x, ImMin(ImLerp(bb.Min.y, bb.Max.y, grab_v_norm) + grab_h_pixels, window_rect.Max.y));
-    window->DrawList->AddRectFilled(grab_rect.Min, grab_rect.Max, grab_col, style.ScrollbarRounding);
-}
-
 void ImGui::BringWindowToFront(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -7871,177 +6012,6 @@
     return window->DC.StateStorage;
 }
 
-void ImGui::TextV(const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const char* text_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    TextUnformatted(g.TempBuffer, text_end);
-}
-
-void ImGui::Text(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextColoredV(const ImVec4& col, const char* fmt, va_list args)
-{
-    PushStyleColor(ImGuiCol_Text, col);
-    TextV(fmt, args);
-    PopStyleColor();
-}
-
-void ImGui::TextColored(const ImVec4& col, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextColoredV(col, fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextDisabledV(const char* fmt, va_list args)
-{
-    PushStyleColor(ImGuiCol_Text, GImGui->Style.Colors[ImGuiCol_TextDisabled]);
-    TextV(fmt, args);
-    PopStyleColor();
-}
-
-void ImGui::TextDisabled(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextDisabledV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextWrappedV(const char* fmt, va_list args)
-{
-    bool need_wrap = (GImGui->CurrentWindow->DC.TextWrapPos < 0.0f);    // Keep existing wrap position is one ia already set
-    if (need_wrap) PushTextWrapPos(0.0f);
-    TextV(fmt, args);
-    if (need_wrap) PopTextWrapPos();
-}
-
-void ImGui::TextWrapped(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextWrappedV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextUnformatted(const char* text, const char* text_end)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(text != NULL);
-    const char* text_begin = text;
-    if (text_end == NULL)
-        text_end = text + strlen(text); // FIXME-OPT
-
-    const ImVec2 text_pos(window->DC.CursorPos.x, window->DC.CursorPos.y + window->DC.CurrentLineTextBaseOffset);
-    const float wrap_pos_x = window->DC.TextWrapPos;
-    const bool wrap_enabled = wrap_pos_x >= 0.0f;
-    if (text_end - text > 2000 && !wrap_enabled)
-    {
-        // Long text!
-        // Perform manual coarse clipping to optimize for long multi-line text
-        // From this point we will only compute the width of lines that are visible. Optimization only available when word-wrapping is disabled.
-        // We also don't vertically center the text within the line full height, which is unlikely to matter because we are likely the biggest and only item on the line.
-        const char* line = text;
-        const float line_height = GetTextLineHeight();
-        const ImRect clip_rect = window->ClipRect;
-        ImVec2 text_size(0,0);
-
-        if (text_pos.y <= clip_rect.Max.y)
-        {
-            ImVec2 pos = text_pos;
-
-            // Lines to skip (can't skip when logging text)
-            if (!g.LogEnabled)
-            {
-                int lines_skippable = (int)((clip_rect.Min.y - text_pos.y) / line_height);
-                if (lines_skippable > 0)
-                {
-                    int lines_skipped = 0;
-                    while (line < text_end && lines_skipped < lines_skippable)
-                    {
-                        const char* line_end = strchr(line, '\n');
-                        if (!line_end)
-                            line_end = text_end;
-                        line = line_end + 1;
-                        lines_skipped++;
-                    }
-                    pos.y += lines_skipped * line_height;
-                }
-            }
-
-            // Lines to render
-            if (line < text_end)
-            {
-                ImRect line_rect(pos, pos + ImVec2(FLT_MAX, line_height));
-                while (line < text_end)
-                {
-                    const char* line_end = strchr(line, '\n');
-                    if (IsClippedEx(line_rect, 0, false))
-                        break;
-
-                    const ImVec2 line_size = CalcTextSize(line, line_end, false);
-                    text_size.x = ImMax(text_size.x, line_size.x);
-                    RenderText(pos, line, line_end, false);
-                    if (!line_end)
-                        line_end = text_end;
-                    line = line_end + 1;
-                    line_rect.Min.y += line_height;
-                    line_rect.Max.y += line_height;
-                    pos.y += line_height;
-                }
-
-                // Count remaining lines
-                int lines_skipped = 0;
-                while (line < text_end)
-                {
-                    const char* line_end = strchr(line, '\n');
-                    if (!line_end)
-                        line_end = text_end;
-                    line = line_end + 1;
-                    lines_skipped++;
-                }
-                pos.y += lines_skipped * line_height;
-            }
-
-            text_size.y += (pos - text_pos).y;
-        }
-
-        ImRect bb(text_pos, text_pos + text_size);
-        ItemSize(bb);
-        ItemAdd(bb, 0);
-    }
-    else
-    {
-        const float wrap_width = wrap_enabled ? CalcWrapWidthForPos(window->DC.CursorPos, wrap_pos_x) : 0.0f;
-        const ImVec2 text_size = CalcTextSize(text_begin, text_end, false, wrap_width);
-
-        // Account of baseline offset
-        ImRect bb(text_pos, text_pos + text_size);
-        ItemSize(text_size);
-        if (!ItemAdd(bb, 0))
-            return;
-
-        // Render (we don't hide text after ## in this end-user function)
-        RenderTextWrapped(bb.Min, text_begin, text_end, wrap_width);
-    }
-}
-
 void ImGui::AlignTextToFramePadding()
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -8053,864 +6023,6 @@
     window->DC.CurrentLineTextBaseOffset = ImMax(window->DC.CurrentLineTextBaseOffset, g.Style.FramePadding.y);
 }
 
-// Add a label+text combo aligned to other label+value widgets
-void ImGui::LabelTextV(const char* label, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect value_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2));
-    const ImRect total_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w + (label_size.x > 0.0f ? style.ItemInnerSpacing.x : 0.0f), style.FramePadding.y*2) + label_size);
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, 0))
-        return;
-
-    // Render
-    const char* value_text_begin = &g.TempBuffer[0];
-    const char* value_text_end = value_text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    RenderTextClipped(value_bb.Min, value_bb.Max, value_text_begin, value_text_end, NULL, ImVec2(0.0f,0.5f));
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(value_bb.Max.x + style.ItemInnerSpacing.x, value_bb.Min.y + style.FramePadding.y), label);
-}
-
-void ImGui::LabelText(const char* label, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    LabelTextV(label, fmt, args);
-    va_end(args);
-}
-
-bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool* out_held, ImGuiButtonFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-
-    if (flags & ImGuiButtonFlags_Disabled)
-    {
-        if (out_hovered) *out_hovered = false;
-        if (out_held) *out_held = false;
-        if (g.ActiveId == id) ClearActiveID();
-        return false;
-    }
-
-    // Default behavior requires click+release on same spot
-    if ((flags & (ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnClick | ImGuiButtonFlags_PressedOnRelease | ImGuiButtonFlags_PressedOnDoubleClick)) == 0)
-        flags |= ImGuiButtonFlags_PressedOnClickRelease;
-
-    ImGuiWindow* backup_hovered_window = g.HoveredWindow;
-    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
-        g.HoveredWindow = window;
-
-    bool pressed = false;
-    bool hovered = ItemHoverable(bb, id);
-
-    // Drag source doesn't report as hovered
-    if (hovered && g.DragDropActive && g.DragDropPayload.SourceId == id && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoDisableHover))
-        hovered = false;
-
-    // Special mode for Drag and Drop where holding button pressed for a long time while dragging another item triggers the button
-    if (g.DragDropActive && (flags & ImGuiButtonFlags_PressedOnDragDropHold) && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoHoldToOpenOthers))
-        if (IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem))
-        {
-            hovered = true;
-            SetHoveredID(id);
-            if (CalcTypematicPressedRepeatAmount(g.HoveredIdTimer + 0.0001f, g.HoveredIdTimer + 0.0001f - g.IO.DeltaTime, 0.01f, 0.70f)) // FIXME: Our formula for CalcTypematicPressedRepeatAmount() is fishy
-            {
-                pressed = true;
-                FocusWindow(window);
-            }
-        }
-
-    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
-        g.HoveredWindow = backup_hovered_window;
-
-    // AllowOverlap mode (rarely used) requires previous frame HoveredId to be null or to match. This allows using patterns where a later submitted widget overlaps a previous one.
-    if (hovered && (flags & ImGuiButtonFlags_AllowItemOverlap) && (g.HoveredIdPreviousFrame != id && g.HoveredIdPreviousFrame != 0))
-        hovered = false;
-
-    // Mouse
-    if (hovered)
-    {
-        if (!(flags & ImGuiButtonFlags_NoKeyModifiers) || (!g.IO.KeyCtrl && !g.IO.KeyShift && !g.IO.KeyAlt))
-        {
-            //                        | CLICKING        | HOLDING with ImGuiButtonFlags_Repeat
-            // PressedOnClickRelease  |  <on release>*  |  <on repeat> <on repeat> .. (NOT on release)  <-- MOST COMMON! (*) only if both click/release were over bounds
-            // PressedOnClick         |  <on click>     |  <on click> <on repeat> <on repeat> ..
-            // PressedOnRelease       |  <on release>   |  <on repeat> <on repeat> .. (NOT on release)
-            // PressedOnDoubleClick   |  <on dclick>    |  <on dclick> <on repeat> <on repeat> ..
-            // FIXME-NAV: We don't honor those different behaviors.
-            if ((flags & ImGuiButtonFlags_PressedOnClickRelease) && g.IO.MouseClicked[0])
-            {
-                SetActiveID(id, window);
-                if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                    SetFocusID(id, window);
-                FocusWindow(window);
-            }
-            if (((flags & ImGuiButtonFlags_PressedOnClick) && g.IO.MouseClicked[0]) || ((flags & ImGuiButtonFlags_PressedOnDoubleClick) && g.IO.MouseDoubleClicked[0]))
-            {
-                pressed = true;
-                if (flags & ImGuiButtonFlags_NoHoldingActiveID)
-                    ClearActiveID();
-                else
-                    SetActiveID(id, window); // Hold on ID
-                FocusWindow(window);
-            }
-            if ((flags & ImGuiButtonFlags_PressedOnRelease) && g.IO.MouseReleased[0])
-            {
-                if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
-                    pressed = true;
-                ClearActiveID();
-            }
-
-            // 'Repeat' mode acts when held regardless of _PressedOn flags (see table above).
-            // Relies on repeat logic of IsMouseClicked() but we may as well do it ourselves if we end up exposing finer RepeatDelay/RepeatRate settings.
-            if ((flags & ImGuiButtonFlags_Repeat) && g.ActiveId == id && g.IO.MouseDownDuration[0] > 0.0f && IsMouseClicked(0, true))
-                pressed = true;
-        }
-
-        if (pressed)
-            g.NavDisableHighlight = true;
-    }
-
-    // Gamepad/Keyboard navigation
-    // We report navigated item as hovered but we don't set g.HoveredId to not interfere with mouse.
-    if (g.NavId == id && !g.NavDisableHighlight && g.NavDisableMouseHover && (g.ActiveId == 0 || g.ActiveId == id || g.ActiveId == window->MoveId))
-        hovered = true;
-
-    if (g.NavActivateDownId == id)
-    {
-        bool nav_activated_by_code = (g.NavActivateId == id);
-        bool nav_activated_by_inputs = IsNavInputPressed(ImGuiNavInput_Activate, (flags & ImGuiButtonFlags_Repeat) ? ImGuiInputReadMode_Repeat : ImGuiInputReadMode_Pressed);
-        if (nav_activated_by_code || nav_activated_by_inputs)
-            pressed = true;
-        if (nav_activated_by_code || nav_activated_by_inputs || g.ActiveId == id)
-        {
-            // Set active id so it can be queried by user via IsItemActive(), equivalent of holding the mouse button.
-            g.NavActivateId = id; // This is so SetActiveId assign a Nav source
-            SetActiveID(id, window);
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                SetFocusID(id, window);
-            g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right) | (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        }
-    }
-
-    bool held = false;
-    if (g.ActiveId == id)
-    {
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
-        {
-            if (g.ActiveIdIsJustActivated)
-                g.ActiveIdClickOffset = g.IO.MousePos - bb.Min;
-            if (g.IO.MouseDown[0])
-            {
-                held = true;
-            }
-            else
-            {
-                if (hovered && (flags & ImGuiButtonFlags_PressedOnClickRelease))
-                    if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
-                        if (!g.DragDropActive)
-                            pressed = true;
-                ClearActiveID();
-            }
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                g.NavDisableHighlight = true;
-        }
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-        {
-            if (g.NavActivateDownId != id)
-                ClearActiveID();
-        }
-    }
-
-    if (out_hovered) *out_hovered = hovered;
-    if (out_held) *out_held = held;
-
-    return pressed;
-}
-
-bool ImGui::ButtonEx(const char* label, const ImVec2& size_arg, ImGuiButtonFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    ImVec2 pos = window->DC.CursorPos;
-    if ((flags & ImGuiButtonFlags_AlignTextBaseLine) && style.FramePadding.y < window->DC.CurrentLineTextBaseOffset) // Try to vertically align buttons that are smaller/have no padding so that text baseline matches (bit hacky, since it shouldn't be a flag)
-        pos.y += window->DC.CurrentLineTextBaseOffset - style.FramePadding.y;
-    ImVec2 size = CalcItemSize(size_arg, label_size.x + style.FramePadding.x * 2.0f, label_size.y + style.FramePadding.y * 2.0f);
-
-    const ImRect bb(pos, pos + size);
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
-        flags |= ImGuiButtonFlags_Repeat;
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
-    if (pressed)
-        MarkItemEdited(id);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, style.FrameRounding);
-    RenderTextClipped(bb.Min + style.FramePadding, bb.Max - style.FramePadding, label, NULL, &label_size, style.ButtonTextAlign, &bb);
-
-    // Automatically close popups
-    //if (pressed && !(flags & ImGuiButtonFlags_DontClosePopups) && (window->Flags & ImGuiWindowFlags_Popup))
-    //    CloseCurrentPopup();
-
-    return pressed;
-}
-
-bool ImGui::Button(const char* label, const ImVec2& size_arg)
-{
-    return ButtonEx(label, size_arg, 0);
-}
-
-// Small buttons fits within text without additional vertical spacing.
-bool ImGui::SmallButton(const char* label)
-{
-    ImGuiContext& g = *GImGui;
-    float backup_padding_y = g.Style.FramePadding.y;
-    g.Style.FramePadding.y = 0.0f;
-    bool pressed = ButtonEx(label, ImVec2(0,0), ImGuiButtonFlags_AlignTextBaseLine);
-    g.Style.FramePadding.y = backup_padding_y;
-    return pressed;
-}
-
-bool ImGui::ArrowButtonEx(const char* str_id, ImGuiDir dir, ImVec2 size, ImGuiButtonFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiID id = window->GetID(str_id);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const float default_size = GetFrameHeight();
-    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
-        flags |= ImGuiButtonFlags_Repeat;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, g.Style.FrameRounding);
-    RenderArrow(bb.Min + ImVec2(ImMax(0.0f, size.x - g.FontSize - g.Style.FramePadding.x), ImMax(0.0f, size.y - g.FontSize - g.Style.FramePadding.y)), dir);
-
-    return pressed;
-}
-
-bool ImGui::ArrowButton(const char* str_id, ImGuiDir dir)
-{
-    float sz = GetFrameHeight();
-    return ArrowButtonEx(str_id, dir, ImVec2(sz, sz), 0);
-}
-
-// Tip: use ImGui::PushID()/PopID() to push indices or pointers in the ID stack.
-// Then you can keep 'str_id' empty or the same for all your buttons (instead of creating a string based on a non-string id)
-bool ImGui::InvisibleButton(const char* str_id, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    // Cannot use zero-size for InvisibleButton(). Unlike Button() there is not way to fallback using the label size.
-    IM_ASSERT(size_arg.x != 0.0f && size_arg.y != 0.0f);
-
-    const ImGuiID id = window->GetID(str_id);
-    ImVec2 size = CalcItemSize(size_arg, 0.0f, 0.0f);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    ItemSize(bb);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    return pressed;
-}
-
-// Button to close a window
-bool ImGui::CloseButton(ImGuiID id, const ImVec2& pos, float radius)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    // We intentionally allow interaction when clipped so that a mechanical Alt,Right,Validate sequence close a window.
-    // (this isn't the regular behavior of buttons, but it doesn't affect the user much because navigation tends to keep items visible).
-    const ImRect bb(pos - ImVec2(radius,radius), pos + ImVec2(radius,radius));
-    bool is_clipped = !ItemAdd(bb, id);
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-    if (is_clipped)
-        return pressed;
-
-    // Render
-    ImVec2 center = bb.GetCenter();
-    if (hovered)
-        window->DrawList->AddCircleFilled(center, ImMax(2.0f, radius), GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : ImGuiCol_ButtonHovered), 9);
-
-    float cross_extent = (radius * 0.7071f) - 1.0f;
-    ImU32 cross_col = GetColorU32(ImGuiCol_Text);
-    center -= ImVec2(0.5f, 0.5f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent,+cross_extent), center + ImVec2(-cross_extent,-cross_extent), cross_col, 1.0f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent,-cross_extent), center + ImVec2(-cross_extent,+cross_extent), cross_col, 1.0f);
-
-    return pressed;
-}
-
-bool ImGui::CollapseButton(ImGuiID id, const ImVec2& pos)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    ImRect bb(pos, pos + ImVec2(g.FontSize, g.FontSize) + g.Style.FramePadding * 2.0f);
-    ItemAdd(bb, id);
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_None);
-
-    ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    if (hovered || held)
-        window->DrawList->AddCircleFilled(bb.GetCenter() + ImVec2(0.0f, -0.5f), g.FontSize * 0.5f + 1.0f, col, 9);
-    RenderArrow(bb.Min + g.Style.FramePadding, window->Collapsed ? ImGuiDir_Right : ImGuiDir_Down, 1.0f);
-
-    // Switch to moving the window after mouse is moved beyond the initial drag threshold
-    if (IsItemActive() && IsMouseDragging())
-        StartMouseMovingWindow(window);
-
-    return pressed;
-}
-
-void ImGui::Image(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, const ImVec4& tint_col, const ImVec4& border_col)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    if (border_col.w > 0.0f)
-        bb.Max += ImVec2(2,2);
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    if (border_col.w > 0.0f)
-    {
-        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(border_col), 0.0f);
-        window->DrawList->AddImage(user_texture_id, bb.Min+ImVec2(1,1), bb.Max-ImVec2(1,1), uv0, uv1, GetColorU32(tint_col));
-    }
-    else
-    {
-        window->DrawList->AddImage(user_texture_id, bb.Min, bb.Max, uv0, uv1, GetColorU32(tint_col));
-    }
-}
-
-// frame_padding < 0: uses FramePadding from style (default)
-// frame_padding = 0: no framing
-// frame_padding > 0: set framing size
-// The color used are the button colors.
-bool ImGui::ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, int frame_padding, const ImVec4& bg_col, const ImVec4& tint_col)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    // Default to using texture ID as ID. User can still push string/integer prefixes.
-    // We could hash the size/uv to create a unique ID but that would prevent the user from animating UV.
-    PushID((void*)user_texture_id);
-    const ImGuiID id = window->GetID("#image");
-    PopID();
-
-    const ImVec2 padding = (frame_padding >= 0) ? ImVec2((float)frame_padding, (float)frame_padding) : style.FramePadding;
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size + padding*2);
-    const ImRect image_bb(window->DC.CursorPos + padding, window->DC.CursorPos + padding + size);
-    ItemSize(bb);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, ImClamp((float)ImMin(padding.x, padding.y), 0.0f, style.FrameRounding));
-    if (bg_col.w > 0.0f)
-        window->DrawList->AddRectFilled(image_bb.Min, image_bb.Max, GetColorU32(bg_col));
-    window->DrawList->AddImage(user_texture_id, image_bb.Min, image_bb.Max, uv0, uv1, GetColorU32(tint_col));
-
-    return pressed;
-}
-
-// Start logging ImGui output to TTY
-void ImGui::LogToTTY(int max_depth)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = stdout;
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-// Start logging ImGui output to given file
-void ImGui::LogToFile(int max_depth, const char* filename)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    if (!filename)
-    {
-        filename = g.IO.LogFilename;
-        if (!filename)
-            return;
-    }
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = ImFileOpen(filename, "ab");
-    if (!g.LogFile)
-    {
-        IM_ASSERT(g.LogFile != NULL); // Consider this an error
-        return;
-    }
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-// Start logging ImGui output to clipboard
-void ImGui::LogToClipboard(int max_depth)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = NULL;
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-void ImGui::LogFinish()
-{
-    ImGuiContext& g = *GImGui;
-    if (!g.LogEnabled)
-        return;
-
-    LogText(IM_NEWLINE);
-    if (g.LogFile != NULL)
-    {
-        if (g.LogFile == stdout)
-            fflush(g.LogFile);
-        else
-            fclose(g.LogFile);
-        g.LogFile = NULL;
-    }
-    if (g.LogClipboard.size() > 1)
-    {
-        SetClipboardText(g.LogClipboard.begin());
-        g.LogClipboard.clear();
-    }
-    g.LogEnabled = false;
-}
-
-// Helper to display logging buttons
-void ImGui::LogButtons()
-{
-    ImGuiContext& g = *GImGui;
-
-    PushID("LogButtons");
-    const bool log_to_tty = Button("Log To TTY"); SameLine();
-    const bool log_to_file = Button("Log To File"); SameLine();
-    const bool log_to_clipboard = Button("Log To Clipboard"); SameLine();
-    PushItemWidth(80.0f);
-    PushAllowKeyboardFocus(false);
-    SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL);
-    PopAllowKeyboardFocus();
-    PopItemWidth();
-    PopID();
-
-    // Start logging at the end of the function so that the buttons don't appear in the log
-    if (log_to_tty)
-        LogToTTY(g.LogAutoExpandMaxDepth);
-    if (log_to_file)
-        LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename);
-    if (log_to_clipboard)
-        LogToClipboard(g.LogAutoExpandMaxDepth);
-}
-
-bool ImGui::TreeNodeBehaviorIsOpen(ImGuiID id, ImGuiTreeNodeFlags flags)
-{
-    if (flags & ImGuiTreeNodeFlags_Leaf)
-        return true;
-
-    // We only write to the tree storage if the user clicks (or explicitly use SetNextTreeNode*** functions)
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    ImGuiStorage* storage = window->DC.StateStorage;
-
-    bool is_open;
-    if (g.NextTreeNodeOpenCond != 0)
-    {
-        if (g.NextTreeNodeOpenCond & ImGuiCond_Always)
-        {
-            is_open = g.NextTreeNodeOpenVal;
-            storage->SetInt(id, is_open);
-        }
-        else
-        {
-            // We treat ImGuiCond_Once and ImGuiCond_FirstUseEver the same because tree node state are not saved persistently.
-            const int stored_value = storage->GetInt(id, -1);
-            if (stored_value == -1)
-            {
-                is_open = g.NextTreeNodeOpenVal;
-                storage->SetInt(id, is_open);
-            }
-            else
-            {
-                is_open = stored_value != 0;
-            }
-        }
-        g.NextTreeNodeOpenCond = 0;
-    }
-    else
-    {
-        is_open = storage->GetInt(id, (flags & ImGuiTreeNodeFlags_DefaultOpen) ? 1 : 0) != 0;
-    }
-
-    // When logging is enabled, we automatically expand tree nodes (but *NOT* collapsing headers.. seems like sensible behavior).
-    // NB- If we are above max depth we still allow manually opened nodes to be logged.
-    if (g.LogEnabled && !(flags & ImGuiTreeNodeFlags_NoAutoOpenOnLog) && window->DC.TreeDepth < g.LogAutoExpandMaxDepth)
-        is_open = true;
-
-    return is_open;
-}
-
-bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* label, const char* label_end)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const bool display_frame = (flags & ImGuiTreeNodeFlags_Framed) != 0;
-    const ImVec2 padding = (display_frame || (flags & ImGuiTreeNodeFlags_FramePadding)) ? style.FramePadding : ImVec2(style.FramePadding.x, 0.0f);
-
-    if (!label_end)
-        label_end = FindRenderedTextEnd(label);
-    const ImVec2 label_size = CalcTextSize(label, label_end, false);
-
-    // We vertically grow up to current line height up the typical widget height.
-    const float text_base_offset_y = ImMax(padding.y, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
-    const float frame_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + style.FramePadding.y*2), label_size.y + padding.y*2);
-    ImRect frame_bb = ImRect(window->DC.CursorPos, ImVec2(window->Pos.x + GetContentRegionMax().x, window->DC.CursorPos.y + frame_height));
-    if (display_frame)
-    {
-        // Framed header expand a little outside the default padding
-        frame_bb.Min.x -= (float)(int)(window->WindowPadding.x*0.5f) - 1;
-        frame_bb.Max.x += (float)(int)(window->WindowPadding.x*0.5f) - 1;
-    }
-
-    const float text_offset_x = (g.FontSize + (display_frame ? padding.x*3 : padding.x*2));   // Collapser arrow width + Spacing
-    const float text_width = g.FontSize + (label_size.x > 0.0f ? label_size.x + padding.x*2 : 0.0f);   // Include collapser
-    ItemSize(ImVec2(text_width, frame_height), text_base_offset_y);
-
-    // For regular tree nodes, we arbitrary allow to click past 2 worth of ItemSpacing
-    // (Ideally we'd want to add a flag for the user to specify if we want the hit test to be done up to the right side of the content or not)
-    const ImRect interact_bb = display_frame ? frame_bb : ImRect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + text_width + style.ItemSpacing.x*2, frame_bb.Max.y);
-    bool is_open = TreeNodeBehaviorIsOpen(id, flags);
-
-    // Store a flag for the current depth to tell if we will allow closing this node when navigating one of its child.
-    // For this purpose we essentially compare if g.NavIdIsAlive went from 0 to 1 between TreeNode() and TreePop().
-    // This is currently only support 32 level deep and we are fine with (1 << Depth) overflowing into a zero.
-    if (is_open && !g.NavIdIsAlive && (flags & ImGuiTreeNodeFlags_NavLeftJumpsBackHere) && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        window->DC.TreeDepthMayJumpToParentOnPop |= (1 << window->DC.TreeDepth);
-
-    bool item_add = ItemAdd(interact_bb, id);
-    window->DC.LastItemStatusFlags |= ImGuiItemStatusFlags_HasDisplayRect;
-    window->DC.LastItemDisplayRect = frame_bb;
-
-    if (!item_add)
-    {
-        if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-            TreePushRawID(id);
-        return is_open;
-    }
-
-    // Flags that affects opening behavior:
-    // - 0(default) ..................... single-click anywhere to open
-    // - OpenOnDoubleClick .............. double-click anywhere to open
-    // - OpenOnArrow .................... single-click on arrow to open
-    // - OpenOnDoubleClick|OpenOnArrow .. single-click on arrow or double-click anywhere to open
-    ImGuiButtonFlags button_flags = ImGuiButtonFlags_NoKeyModifiers | ((flags & ImGuiTreeNodeFlags_AllowItemOverlap) ? ImGuiButtonFlags_AllowItemOverlap : 0);
-    if (!(flags & ImGuiTreeNodeFlags_Leaf))
-        button_flags |= ImGuiButtonFlags_PressedOnDragDropHold;
-    if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
-        button_flags |= ImGuiButtonFlags_PressedOnDoubleClick | ((flags & ImGuiTreeNodeFlags_OpenOnArrow) ? ImGuiButtonFlags_PressedOnClickRelease : 0);
-
-    bool hovered, held, pressed = ButtonBehavior(interact_bb, id, &hovered, &held, button_flags);
-    if (!(flags & ImGuiTreeNodeFlags_Leaf))
-    {
-        bool toggled = false;
-        if (pressed)
-        {
-            toggled = !(flags & (ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick)) || (g.NavActivateId == id);
-            if (flags & ImGuiTreeNodeFlags_OpenOnArrow)
-                toggled |= IsMouseHoveringRect(interact_bb.Min, ImVec2(interact_bb.Min.x + text_offset_x, interact_bb.Max.y)) && (!g.NavDisableMouseHover);
-            if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
-                toggled |= g.IO.MouseDoubleClicked[0];
-            if (g.DragDropActive && is_open) // When using Drag and Drop "hold to open" we keep the node highlighted after opening, but never close it again.
-                toggled = false;
-        }
-
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Left && is_open)
-        {
-            toggled = true;
-            NavMoveRequestCancel();
-        }
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right && !is_open) // If there's something upcoming on the line we may want to give it the priority?
-        {
-            toggled = true;
-            NavMoveRequestCancel();
-        }
-
-        if (toggled)
-        {
-            is_open = !is_open;
-            window->DC.StateStorage->SetInt(id, is_open);
-        }
-    }
-    if (flags & ImGuiTreeNodeFlags_AllowItemOverlap)
-        SetItemAllowOverlap();
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
-    const ImVec2 text_pos = frame_bb.Min + ImVec2(text_offset_x, text_base_offset_y);
-    if (display_frame)
-    {
-        // Framed type
-        RenderFrame(frame_bb.Min, frame_bb.Max, col, true, style.FrameRounding);
-        RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
-        RenderArrow(frame_bb.Min + ImVec2(padding.x, text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 1.0f);
-        if (g.LogEnabled)
-        {
-            // NB: '##' is normally used to hide text (as a library-wide feature), so we need to specify the text range to make sure the ## aren't stripped out here.
-            const char log_prefix[] = "\n##";
-            const char log_suffix[] = "##";
-            LogRenderedText(&text_pos, log_prefix, log_prefix+3);
-            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
-            LogRenderedText(&text_pos, log_suffix+1, log_suffix+3);
-        }
-        else
-        {
-            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
-        }
-    }
-    else
-    {
-        // Unframed typed for tree nodes
-        if (hovered || (flags & ImGuiTreeNodeFlags_Selected))
-        {
-            RenderFrame(frame_bb.Min, frame_bb.Max, col, false);
-            RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
-        }
-
-        if (flags & ImGuiTreeNodeFlags_Bullet)
-            RenderBullet(frame_bb.Min + ImVec2(text_offset_x * 0.5f, g.FontSize*0.50f + text_base_offset_y));
-        else if (!(flags & ImGuiTreeNodeFlags_Leaf))
-            RenderArrow(frame_bb.Min + ImVec2(padding.x, g.FontSize*0.15f + text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 0.70f);
-        if (g.LogEnabled)
-            LogRenderedText(&text_pos, ">");
-        RenderText(text_pos, label, label_end, false);
-    }
-
-    if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        TreePushRawID(id);
-    return is_open;
-}
-
-// CollapsingHeader returns true when opened but do not indent nor push into the ID stack (because of the ImGuiTreeNodeFlags_NoTreePushOnOpen flag).
-// This is basically the same as calling TreeNodeEx(label, ImGuiTreeNodeFlags_CollapsingHeader). You can remove the _NoTreePushOnOpen flag if you want behavior closer to normal TreeNode().
-bool ImGui::CollapsingHeader(const char* label, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags | ImGuiTreeNodeFlags_CollapsingHeader, label);
-}
-
-bool ImGui::CollapsingHeader(const char* label, bool* p_open, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    if (p_open && !*p_open)
-        return false;
-
-    ImGuiID id = window->GetID(label);
-    bool is_open = TreeNodeBehavior(id, flags | ImGuiTreeNodeFlags_CollapsingHeader | (p_open ? ImGuiTreeNodeFlags_AllowItemOverlap : 0), label);
-    if (p_open)
-    {
-        // Create a small overlapping close button // FIXME: We can evolve this into user accessible helpers to add extra buttons on title bars, headers, etc.
-        ImGuiContext& g = *GImGui;
-        ImGuiItemHoveredDataBackup last_item_backup;
-        float button_radius = g.FontSize * 0.5f;
-        ImVec2 button_center = ImVec2(ImMin(window->DC.LastItemRect.Max.x, window->ClipRect.Max.x) - g.Style.FramePadding.x - button_radius, window->DC.LastItemRect.GetCenter().y);
-        if (CloseButton(window->GetID((void*)(intptr_t)(id+1)), button_center, button_radius))
-            *p_open = false;
-        last_item_backup.Restore();
-    }
-
-    return is_open;
-}
-
-bool ImGui::TreeNodeEx(const char* label, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags, label, NULL);
-}
-
-bool ImGui::TreeNodeExV(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    return TreeNodeBehavior(window->GetID(str_id), flags, g.TempBuffer, label_end);
-}
-
-bool ImGui::TreeNodeExV(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    return TreeNodeBehavior(window->GetID(ptr_id), flags, g.TempBuffer, label_end);
-}
-
-bool ImGui::TreeNodeV(const char* str_id, const char* fmt, va_list args)
-{
-    return TreeNodeExV(str_id, 0, fmt, args);
-}
-
-bool ImGui::TreeNodeV(const void* ptr_id, const char* fmt, va_list args)
-{
-    return TreeNodeExV(ptr_id, 0, fmt, args);
-}
-
-bool ImGui::TreeNodeEx(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(str_id, flags, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNodeEx(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(ptr_id, flags, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const char* str_id, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(str_id, 0, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const void* ptr_id, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(ptr_id, 0, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const char* label)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-    return TreeNodeBehavior(window->GetID(label), 0, label, NULL);
-}
-
-void ImGui::TreeAdvanceToLabelPos()
-{
-    ImGuiContext& g = *GImGui;
-    g.CurrentWindow->DC.CursorPos.x += GetTreeNodeToLabelSpacing();
-}
-
-// Horizontal distance preceding label when using TreeNode() or Bullet()
-float ImGui::GetTreeNodeToLabelSpacing()
-{
-    ImGuiContext& g = *GImGui;
-    return g.FontSize + (g.Style.FramePadding.x * 2.0f);
-}
-
-void ImGui::SetNextTreeNodeOpen(bool is_open, ImGuiCond cond)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow->SkipItems)
-        return;
-    g.NextTreeNodeOpenVal = is_open;
-    g.NextTreeNodeOpenCond = cond ? cond : ImGuiCond_Always;
-}
-
 void ImGui::PushID(const char* str_id)
 {
     ImGuiWindow* window = GetCurrentWindowRead();
@@ -8957,4093 +6069,6 @@
     return GImGui->CurrentWindow->GetID(ptr_id);
 }
 
-void ImGui::Bullet()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize, line_height));
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-    {
-        SameLine(0, style.FramePadding.x*2);
-        return;
-    }
-
-    // Render and stay on same line
-    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
-    SameLine(0, style.FramePadding.x*2);
-}
-
-// Text with a little bullet aligned to the typical tree node.
-void ImGui::BulletTextV(const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const char* text_begin = g.TempBuffer;
-    const char* text_end = text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    const ImVec2 label_size = CalcTextSize(text_begin, text_end, false);
-    const float text_base_offset_y = ImMax(0.0f, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
-    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize + (label_size.x > 0.0f ? (label_size.x + style.FramePadding.x*2) : 0.0f), ImMax(line_height, label_size.y)));  // Empty text doesn't add padding
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    // Render
-    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
-    RenderText(bb.Min+ImVec2(g.FontSize + style.FramePadding.x*2, text_base_offset_y), text_begin, text_end, false);
-}
-
-void ImGui::BulletText(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    BulletTextV(fmt, args);
-    va_end(args);
-}
-
-static inline int DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format)
-{
-    if (data_type == ImGuiDataType_S32 || data_type == ImGuiDataType_U32)   // Signedness doesn't matter when pushing the argument
-        return ImFormatString(buf, buf_size, format, *(const ImU32*)data_ptr);
-    if (data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)   // Signedness doesn't matter when pushing the argument
-        return ImFormatString(buf, buf_size, format, *(const ImU64*)data_ptr);
-    if (data_type == ImGuiDataType_Float)
-        return ImFormatString(buf, buf_size, format, *(const float*)data_ptr);
-    if (data_type == ImGuiDataType_Double)
-        return ImFormatString(buf, buf_size, format, *(const double*)data_ptr);
-    IM_ASSERT(0);
-    return 0;
-}
-
-// FIXME: Adding support for clamping on boundaries of the data type would be nice.
-static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg1, const void* arg2)
-{
-    IM_ASSERT(op == '+' || op == '-');
-    switch (data_type)
-    {
-        case ImGuiDataType_S32:
-            if (op == '+')      *(int*)output = *(const int*)arg1 + *(const int*)arg2;
-            else if (op == '-') *(int*)output = *(const int*)arg1 - *(const int*)arg2;
-            return;
-        case ImGuiDataType_U32:
-            if (op == '+')      *(unsigned int*)output = *(const unsigned int*)arg1 + *(const ImU32*)arg2;
-            else if (op == '-') *(unsigned int*)output = *(const unsigned int*)arg1 - *(const ImU32*)arg2;
-            return;
-        case ImGuiDataType_S64:
-            if (op == '+')      *(ImS64*)output = *(const ImS64*)arg1 + *(const ImS64*)arg2;
-            else if (op == '-') *(ImS64*)output = *(const ImS64*)arg1 - *(const ImS64*)arg2;
-            return;
-        case ImGuiDataType_U64:
-            if (op == '+')      *(ImU64*)output = *(const ImU64*)arg1 + *(const ImU64*)arg2;
-            else if (op == '-') *(ImU64*)output = *(const ImU64*)arg1 - *(const ImU64*)arg2;
-            return;
-        case ImGuiDataType_Float:
-            if (op == '+')      *(float*)output = *(const float*)arg1 + *(const float*)arg2;
-            else if (op == '-') *(float*)output = *(const float*)arg1 - *(const float*)arg2;
-            return;
-        case ImGuiDataType_Double:
-            if (op == '+')      *(double*)output = *(const double*)arg1 + *(const double*)arg2;
-            else if (op == '-') *(double*)output = *(const double*)arg1 - *(const double*)arg2;
-            return;
-        case ImGuiDataType_COUNT: break;
-    }
-    IM_ASSERT(0);
-}
-
-struct ImGuiDataTypeInfo
-{
-    size_t      Size;
-    const char* PrintFmt;   // Unused
-    const char* ScanFmt;
-};
-
-static const ImGuiDataTypeInfo GDataTypeInfo[] =
-{
-    { sizeof(int),          "%d",   "%d"    },
-    { sizeof(unsigned int), "%u",   "%u"    },
-#ifdef _MSC_VER
-    { sizeof(ImS64),        "%I64d","%I64d" },
-    { sizeof(ImU64),        "%I64u","%I64u" },
-#else
-    { sizeof(ImS64),        "%lld", "%lld"  },
-    { sizeof(ImU64),        "%llu", "%llu"  },
-#endif
-    { sizeof(float),        "%f",   "%f"    },  // float are promoted to double in va_arg
-    { sizeof(double),       "%f",   "%lf"   },
-};
-IM_STATIC_ASSERT(IM_ARRAYSIZE(GDataTypeInfo) == ImGuiDataType_COUNT);
-
-// User can input math operators (e.g. +100) to edit a numerical values.
-// NB: This is _not_ a full expression evaluator. We should probably add one and replace this dumb mess..
-static bool DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format)
-{
-    while (ImCharIsBlankA(*buf))
-        buf++;
-
-    // We don't support '-' op because it would conflict with inputing negative value.
-    // Instead you can use +-100 to subtract from an existing value
-    char op = buf[0];
-    if (op == '+' || op == '*' || op == '/')
-    {
-        buf++;
-        while (ImCharIsBlankA(*buf))
-            buf++;
-    }
-    else
-    {
-        op = 0;
-    }
-    if (!buf[0])
-        return false;
-
-    // Copy the value in an opaque buffer so we can compare at the end of the function if it changed at all.
-    IM_ASSERT(data_type < ImGuiDataType_COUNT);
-    int data_backup[2];
-    IM_ASSERT(GDataTypeInfo[data_type].Size <= sizeof(data_backup));
-    memcpy(data_backup, data_ptr, GDataTypeInfo[data_type].Size);
-
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].ScanFmt;
-
-    int arg1i = 0;
-    if (data_type == ImGuiDataType_S32)
-    {
-        int* v = (int*)data_ptr;
-        int arg0i = *v;
-        float arg1f = 0.0f;
-        if (op && sscanf(initial_value_buf, format, &arg0i) < 1)
-            return false;
-        // Store operand in a float so we can use fractional value for multipliers (*1.1), but constant always parsed as integer so we can fit big integers (e.g. 2000000003) past float precision
-        if (op == '+')      { if (sscanf(buf, "%d", &arg1i)) *v = (int)(arg0i + arg1i); }                   // Add (use "+-" to subtract)
-        else if (op == '*') { if (sscanf(buf, "%f", &arg1f)) *v = (int)(arg0i * arg1f); }                   // Multiply
-        else if (op == '/') { if (sscanf(buf, "%f", &arg1f) && arg1f != 0.0f) *v = (int)(arg0i / arg1f); }  // Divide
-        else                { if (sscanf(buf, format, &arg1i) == 1) *v = arg1i; }                           // Assign constant
-    }
-    else if (data_type == ImGuiDataType_U32 || data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)
-    {
-        // Assign constant
-        // FIXME: We don't bother handling support for legacy operators since they are a little too crappy. Instead we may implement a proper expression evaluator in the future.
-        sscanf(buf, format, data_ptr);
-    }
-    else if (data_type == ImGuiDataType_Float)
-    {
-        // For floats we have to ignore format with precision (e.g. "%.2f") because sscanf doesn't take them in
-        format = "%f";
-        float* v = (float*)data_ptr;
-        float arg0f = *v, arg1f = 0.0f;
-        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
-            return false;
-        if (sscanf(buf, format, &arg1f) < 1)
-            return false;
-        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
-        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
-        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
-        else                { *v = arg1f; }                            // Assign constant
-    }
-    else if (data_type == ImGuiDataType_Double)
-    {
-        format = "%lf"; // scanf differentiate float/double unlike printf which forces everything to double because of ellipsis
-        double* v = (double*)data_ptr;
-        double arg0f = *v, arg1f = 0.0;
-        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
-            return false;
-        if (sscanf(buf, format, &arg1f) < 1)
-            return false;
-        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
-        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
-        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
-        else                { *v = arg1f; }                            // Assign constant
-    }
-    return memcmp(data_backup, data_ptr, GDataTypeInfo[data_type].Size) != 0;
-}
-
-// Create text input in place of a slider (when CTRL+Clicking on slider)
-// FIXME: Logic is messy and confusing.
-bool ImGui::InputScalarAsWidgetReplacement(const ImRect& bb, ImGuiID id, const char* label, ImGuiDataType data_type, void* data_ptr, const char* format)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-
-    // Our replacement widget will override the focus ID (registered previously to allow for a TAB focus to happen)
-    // On the first frame, g.ScalarAsInputTextId == 0, then on subsequent frames it becomes == id
-    SetActiveID(g.ScalarAsInputTextId, window);
-    g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-    SetHoveredID(0);
-    FocusableItemUnregister(window);
-
-    char fmt_buf[32];
-    char data_buf[32];
-    format = ImParseFormatTrimDecorations(format, fmt_buf, IM_ARRAYSIZE(fmt_buf));
-    DataTypeFormatString(data_buf, IM_ARRAYSIZE(data_buf), data_type, data_ptr, format);
-    ImStrTrimBlanks(data_buf);
-    ImGuiInputTextFlags flags = ImGuiInputTextFlags_AutoSelectAll | ((data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImGuiInputTextFlags_CharsScientific : ImGuiInputTextFlags_CharsDecimal);
-    bool value_changed = InputTextEx(label, data_buf, IM_ARRAYSIZE(data_buf), bb.GetSize(), flags);
-    if (g.ScalarAsInputTextId == 0)     // First frame we started displaying the InputText widget
-    {
-        IM_ASSERT(g.ActiveId == id);    // InputText ID expected to match the Slider ID
-        g.ScalarAsInputTextId = g.ActiveId;
-        SetHoveredID(id);
-    }
-    if (value_changed)
-        return DataTypeApplyOpFromText(data_buf, g.InputTextState.InitialText.Data, data_type, data_ptr, NULL);
-    return false;
-}
-
-// We don't use strchr() because our strings are usually very short and often start with '%'
-const char* ImParseFormatFindStart(const char* fmt)
-{
-    while (char c = fmt[0])
-    {
-        if (c == '%' && fmt[1] != '%')
-            return fmt;
-        else if (c == '%')
-            fmt++;
-        fmt++;
-    }
-    return fmt;
-}
-
-const char* ImParseFormatFindEnd(const char* fmt)
-{
-    // Printf/scanf types modifiers: I/L/h/j/l/t/w/z. Other uppercase letters qualify as types aka end of the format.
-    if (fmt[0] != '%')
-        return fmt;
-    const unsigned int ignored_uppercase_mask = (1 << ('I'-'A')) | (1 << ('L'-'A'));
-    const unsigned int ignored_lowercase_mask = (1 << ('h'-'a')) | (1 << ('j'-'a')) | (1 << ('l'-'a')) | (1 << ('t'-'a')) | (1 << ('w'-'a')) | (1 << ('z'-'a'));
-    for (char c; (c = *fmt) != 0; fmt++)
-    {
-        if (c >= 'A' && c <= 'Z' && ((1 << (c - 'A')) & ignored_uppercase_mask) == 0)
-            return fmt + 1;
-        if (c >= 'a' && c <= 'z' && ((1 << (c - 'a')) & ignored_lowercase_mask) == 0)
-            return fmt + 1;
-    }
-    return fmt;
-}
-
-// Extract the format out of a format string with leading or trailing decorations
-//  fmt = "blah blah"  -> return fmt
-//  fmt = "%.3f"       -> return fmt
-//  fmt = "hello %.3f" -> return fmt + 6
-//  fmt = "%.3f hello" -> return buf written with "%.3f"
-const char* ImParseFormatTrimDecorations(const char* fmt, char* buf, int buf_size)
-{
-    const char* fmt_start = ImParseFormatFindStart(fmt);
-    if (fmt_start[0] != '%')
-        return fmt;
-    const char* fmt_end = ImParseFormatFindEnd(fmt_start);
-    if (fmt_end[0] == 0) // If we only have leading decoration, we don't need to copy the data.
-        return fmt_start;
-    ImStrncpy(buf, fmt_start, ImMin((int)(fmt_end + 1 - fmt_start), buf_size));
-    return buf;
-}
-
-// Parse display precision back from the display format string
-// FIXME: This is still used by some navigation code path to infer a minimum tweak step, but we should aim to rework widgets so it isn't needed.
-int ImParseFormatPrecision(const char* fmt, int default_precision)
-{
-    fmt = ImParseFormatFindStart(fmt);
-    if (fmt[0] != '%')
-        return default_precision;
-    fmt++;
-    while (*fmt >= '0' && *fmt <= '9')
-        fmt++;
-    int precision = INT_MAX;
-    if (*fmt == '.')
-    {
-        fmt = ImAtoi<int>(fmt + 1, &precision);
-        if (precision < 0 || precision > 99)
-            precision = default_precision;
-    }
-    if (*fmt == 'e' || *fmt == 'E') // Maximum precision with scientific notation
-        precision = -1;
-    if ((*fmt == 'g' || *fmt == 'G') && precision == INT_MAX)
-        precision = -1;
-    return (precision == INT_MAX) ? default_precision : precision;
-}
-
-static float GetMinimumStepAtDecimalPrecision(int decimal_precision)
-{
-    static const float min_steps[10] = { 1.0f, 0.1f, 0.01f, 0.001f, 0.0001f, 0.00001f, 0.000001f, 0.0000001f, 0.00000001f, 0.000000001f };
-    if (decimal_precision < 0)
-        return FLT_MIN;
-    return (decimal_precision >= 0 && decimal_precision < 10) ? min_steps[decimal_precision] : ImPow(10.0f, (float)-decimal_precision);
-}
-
-template<typename TYPE, typename SIGNEDTYPE>
-static inline TYPE RoundScalarWithFormat(const char* format, ImGuiDataType data_type, TYPE v)
-{
-    const char* fmt_start = ImParseFormatFindStart(format);
-    if (fmt_start[0] != '%' || fmt_start[1] == '%') // Don't apply if the value is not visible in the format string
-        return v;
-    char v_str[64];
-    ImFormatString(v_str, IM_ARRAYSIZE(v_str), fmt_start, v);
-    const char* p = v_str;
-    while (*p == ' ')
-        p++;
-    if (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double)
-        v = (TYPE)ImAtof(p);
-    else
-        ImAtoi(p, (SIGNEDTYPE*)&v);
-    return v;
-}
-
-template<typename TYPE, typename FLOATTYPE>
-static inline float SliderBehaviorCalcRatioFromValue(ImGuiDataType data_type, TYPE v, TYPE v_min, TYPE v_max, float power, float linear_zero_pos)
-{
-    if (v_min == v_max)
-        return 0.0f;
-
-    const bool is_power = (power != 1.0f) && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double);
-    const TYPE v_clamped = (v_min < v_max) ? ImClamp(v, v_min, v_max) : ImClamp(v, v_max, v_min);
-    if (is_power)
-    {
-        if (v_clamped < 0.0f)
-        {
-            const float f = 1.0f - (float)((v_clamped - v_min) / (ImMin((TYPE)0, v_max) - v_min));
-            return (1.0f - ImPow(f, 1.0f/power)) * linear_zero_pos;
-        }
-        else
-        {
-            const float f = (float)((v_clamped - ImMax((TYPE)0, v_min)) / (v_max - ImMax((TYPE)0, v_min)));
-            return linear_zero_pos + ImPow(f, 1.0f/power) * (1.0f - linear_zero_pos);
-        }
-    }
-
-    // Linear slider
-    return (float)((FLOATTYPE)(v_clamped - v_min) / (FLOATTYPE)(v_max - v_min));
-}
-
-// FIXME: Move some of the code into SliderBehavior(). Current responsability is larger than what the equivalent DragBehaviorT<> does, we also do some rendering, etc.
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
-{
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const bool is_horizontal = (flags & ImGuiSliderFlags_Vertical) == 0;
-    const bool is_decimal = (data_type == ImGuiDataType_Float) || (data_type == ImGuiDataType_Double);
-    const bool is_power = (power != 1.0f) && is_decimal;
-
-    const float grab_padding = 2.0f;
-    const float slider_sz = is_horizontal ? (bb.GetWidth() - grab_padding * 2.0f) : (bb.GetHeight() - grab_padding * 2.0f);
-    float grab_sz = style.GrabMinSize;
-    SIGNEDTYPE v_range = (v_min < v_max ? v_max - v_min : v_min - v_max);
-    if (!is_decimal && v_range >= 0)                                             // v_range < 0 may happen on integer overflows
-        grab_sz = ImMax((float)(slider_sz / (v_range + 1)), style.GrabMinSize);  // For integer sliders: if possible have the grab size represent 1 unit
-    grab_sz = ImMin(grab_sz, slider_sz);
-    const float slider_usable_sz = slider_sz - grab_sz;
-    const float slider_usable_pos_min = (is_horizontal ? bb.Min.x : bb.Min.y) + grab_padding + grab_sz*0.5f;
-    const float slider_usable_pos_max = (is_horizontal ? bb.Max.x : bb.Max.y) - grab_padding - grab_sz*0.5f;
-
-    // For power curve sliders that cross over sign boundary we want the curve to be symmetric around 0.0f
-    float linear_zero_pos;   // 0.0->1.0f
-    if (is_power && v_min * v_max < 0.0f)
-    {
-        // Different sign
-        const FLOATTYPE linear_dist_min_to_0 = ImPow(v_min >= 0 ? (FLOATTYPE)v_min : -(FLOATTYPE)v_min, (FLOATTYPE)1.0f/power);
-        const FLOATTYPE linear_dist_max_to_0 = ImPow(v_max >= 0 ? (FLOATTYPE)v_max : -(FLOATTYPE)v_max, (FLOATTYPE)1.0f/power);
-        linear_zero_pos = (float)(linear_dist_min_to_0 / (linear_dist_min_to_0 + linear_dist_max_to_0));
-    }
-    else
-    {
-        // Same sign
-        linear_zero_pos = v_min < 0.0f ? 1.0f : 0.0f;
-    }
-
-    // Process interacting with the slider
-    bool value_changed = false;
-    if (g.ActiveId == id)
-    {
-        bool set_new_value = false;
-        float clicked_t = 0.0f;
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
-        {
-            if (!g.IO.MouseDown[0])
-            {
-                ClearActiveID();
-            }
-            else
-            {
-                const float mouse_abs_pos = is_horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
-                clicked_t = (slider_usable_sz > 0.0f) ? ImClamp((mouse_abs_pos - slider_usable_pos_min) / slider_usable_sz, 0.0f, 1.0f) : 0.0f;
-                if (!is_horizontal)
-                    clicked_t = 1.0f - clicked_t;
-                set_new_value = true;
-            }
-        }
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-        {
-            const ImVec2 delta2 = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard | ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 0.0f, 0.0f);
-            float delta = is_horizontal ? delta2.x : -delta2.y;
-            if (g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
-            {
-                ClearActiveID();
-            }
-            else if (delta != 0.0f)
-            {
-                clicked_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
-                const int decimal_precision = is_decimal ? ImParseFormatPrecision(format, 3) : 0;
-                if ((decimal_precision > 0) || is_power)
-                {
-                    delta /= 100.0f;    // Gamepad/keyboard tweak speeds in % of slider bounds
-                    if (IsNavInputDown(ImGuiNavInput_TweakSlow))
-                        delta /= 10.0f;
-                }
-                else
-                {
-                    if ((v_range >= -100.0f && v_range <= 100.0f) || IsNavInputDown(ImGuiNavInput_TweakSlow))
-                        delta = ((delta < 0.0f) ? -1.0f : +1.0f) / (float)v_range; // Gamepad/keyboard tweak speeds in integer steps
-                    else
-                        delta /= 100.0f;
-                }
-                if (IsNavInputDown(ImGuiNavInput_TweakFast))
-                    delta *= 10.0f;
-                set_new_value = true;
-                if ((clicked_t >= 1.0f && delta > 0.0f) || (clicked_t <= 0.0f && delta < 0.0f)) // This is to avoid applying the saturation when already past the limits
-                    set_new_value = false;
-                else
-                    clicked_t = ImSaturate(clicked_t + delta);
-            }
-        }
-
-        if (set_new_value)
-        {
-            TYPE v_new;
-            if (is_power)
-            {
-                // Account for power curve scale on both sides of the zero
-                if (clicked_t < linear_zero_pos)
-                {
-                    // Negative: rescale to the negative range before powering
-                    float a = 1.0f - (clicked_t / linear_zero_pos);
-                    a = ImPow(a, power);
-                    v_new = ImLerp(ImMin(v_max, (TYPE)0), v_min, a);
-                }
-                else
-                {
-                    // Positive: rescale to the positive range before powering
-                    float a;
-                    if (ImFabs(linear_zero_pos - 1.0f) > 1.e-6f)
-                        a = (clicked_t - linear_zero_pos) / (1.0f - linear_zero_pos);
-                    else
-                        a = clicked_t;
-                    a = ImPow(a, power);
-                    v_new = ImLerp(ImMax(v_min, (TYPE)0), v_max, a);
-                }
-            }
-            else
-            {
-                // Linear slider
-                if (is_decimal)
-                {
-                    v_new = ImLerp(v_min, v_max, clicked_t);
-                }
-                else
-                {
-                    // For integer values we want the clicking position to match the grab box so we round above
-                    // This code is carefully tuned to work with large values (e.g. high ranges of U64) while preserving this property..
-                    FLOATTYPE v_new_off_f = (v_max - v_min) * clicked_t;
-                    TYPE v_new_off_floor = (TYPE)(v_new_off_f);
-                    TYPE v_new_off_round = (TYPE)(v_new_off_f + (FLOATTYPE)0.5);
-                    if (!is_decimal && v_new_off_floor < v_new_off_round)
-                        v_new = v_min + v_new_off_round;
-                    else
-                        v_new = v_min + v_new_off_floor;
-                }
-            }
-
-            // Round to user desired precision based on format string
-            v_new = RoundScalarWithFormat<TYPE,SIGNEDTYPE>(format, data_type, v_new);
-
-            // Apply result
-            if (*v != v_new)
-            {
-                *v = v_new;
-                value_changed = true;
-            }
-        }
-    }
-
-    // Output grab position so it can be displayed by the caller
-    float grab_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
-    if (!is_horizontal)
-        grab_t = 1.0f - grab_t;
-    const float grab_pos = ImLerp(slider_usable_pos_min, slider_usable_pos_max, grab_t);
-    if (is_horizontal)
-        *out_grab_bb = ImRect(grab_pos - grab_sz*0.5f, bb.Min.y + grab_padding, grab_pos + grab_sz*0.5f, bb.Max.y - grab_padding);
-    else
-        *out_grab_bb = ImRect(bb.Min.x + grab_padding, grab_pos - grab_sz*0.5f, bb.Max.x - grab_padding, grab_pos + grab_sz*0.5f);
-
-    return value_changed;
-}
-
-// For 32-bits and larger types, slider bounds are limited to half the natural type range.
-// So e.g. an integer Slider between INT_MAX-10 and INT_MAX will fail, but an integer Slider between INT_MAX/2-10 and INT_MAX/2 will be ok.
-// It would be possible to lift that limitation with some work but it doesn't seem to be worth it for sliders.
-bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
-{
-    switch (data_type)
-    {
-    case ImGuiDataType_S32:
-        IM_ASSERT(*(const ImS32*)v_min >= IM_S32_MIN/2 && *(const ImS32*)v_max <= IM_S32_MAX/2);
-        return SliderBehaviorT<ImS32, ImS32, float >(bb, id, data_type, (ImS32*)v,  *(const ImS32*)v_min,  *(const ImS32*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_U32:
-        IM_ASSERT(*(const ImU32*)v_min <= IM_U32_MAX/2);
-        return SliderBehaviorT<ImU32, ImS32, float >(bb, id, data_type, (ImU32*)v,  *(const ImU32*)v_min,  *(const ImU32*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_S64:
-        IM_ASSERT(*(const ImS64*)v_min >= IM_S64_MIN/2 && *(const ImS64*)v_max <= IM_S64_MAX/2);
-        return SliderBehaviorT<ImS64, ImS64, double>(bb, id, data_type, (ImS64*)v,  *(const ImS64*)v_min,  *(const ImS64*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_U64:
-        IM_ASSERT(*(const ImU64*)v_min <= IM_U64_MAX/2);
-        return SliderBehaviorT<ImU64, ImS64, double>(bb, id, data_type, (ImU64*)v,  *(const ImU64*)v_min,  *(const ImU64*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_Float:
-        IM_ASSERT(*(const float*)v_min >= -FLT_MAX/2.0f && *(const float*)v_max <= FLT_MAX/2.0f);
-        return SliderBehaviorT<float, float, float >(bb, id, data_type, (float*)v,  *(const float*)v_min,  *(const float*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_Double:
-        IM_ASSERT(*(const double*)v_min >= -DBL_MAX/2.0f && *(const double*)v_max <= DBL_MAX/2.0f);
-        return SliderBehaviorT<double,double,double>(bb, id, data_type, (double*)v, *(const double*)v_min, *(const double*)v_max, format, power, flags, out_grab_bb);
-    case ImGuiDataType_COUNT: break;
-    }
-    IM_ASSERT(0);
-    return false;
-}
-
-// FIXME-LEGACY: Prior to 1.61 our DragInt() function internally used floats and because of this the compile-time default value for format was "%.0f".
-// Even though we changed the compile-time default, we expect users to have carried %f around, which would break the display of DragInt() calls.
-// To honor backward compatibility we are rewriting the format string, unless IMGUI_DISABLE_OBSOLETE_FUNCTIONS is enabled. What could possibly go wrong?!
-static const char* PatchFormatStringFloatToInt(const char* fmt)
-{
-    if (fmt[0] == '%' && fmt[1] == '.' && fmt[2] == '0' && fmt[3] == 'f' && fmt[4] == 0) // Fast legacy path for "%.0f" which is expected to be the most common case.
-        return "%d";
-    const char* fmt_start = ImParseFormatFindStart(fmt);    // Find % (if any, and ignore %%)
-    const char* fmt_end = ImParseFormatFindEnd(fmt_start);  // Find end of format specifier, which itself is an exercise of confidence/recklessness (because snprintf is dependent on libc or user).
-    if (fmt_end > fmt_start && fmt_end[-1] == 'f')
-    {
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-        if (fmt_start == fmt && fmt_end[0] == 0)
-            return "%d";
-        ImGuiContext& g = *GImGui;
-        ImFormatString(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), "%.*s%%d%s", (int)(fmt_start - fmt), fmt, fmt_end); // Honor leading and trailing decorations, but lose alignment/precision.
-        return g.TempBuffer;
-#else
-        IM_ASSERT(0 && "DragInt(): Invalid format string!"); // Old versions used a default parameter of "%.0f", please replace with e.g. "%d"
-#endif
-    }
-    return fmt;
-}
-
-bool ImGui::SliderScalar(const char* label, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
-    if (!ItemAdd(total_bb, id, &frame_bb))
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        return false;
-    }
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    // Tabbing or CTRL-clicking on Slider turns it into an input box
-    bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, id);
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if (tab_focus_requested || (hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        if (tab_focus_requested || g.IO.KeyCtrl || g.NavInputId == id)
-        {
-            start_text_input = true;
-            g.ScalarAsInputTextId = 0;
-        }
-    }
-    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
-        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
-
-    ItemSize(total_bb, style.FramePadding.y);
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
-
-    // Slider behavior
-    ImRect grab_bb;
-    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_None, &grab_bb);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Render grab
-    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.5f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalar(label, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
-}
-
-bool ImGui::VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(frame_bb, id))
-        return false;
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if ((hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || g.NavInputId == id)
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right);
-    }
-
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
-
-    // Slider behavior
-    ImRect grab_bb;
-    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_Vertical, &grab_bb);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Render grab
-    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    // For the vertical slider we allow centered text to overlap the frame padding
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.0f));
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::SliderAngle(const char* label, float* v_rad, float v_degrees_min, float v_degrees_max)
-{
-    float v_deg = (*v_rad) * 360.0f / (2*IM_PI);
-    bool value_changed = SliderFloat(label, &v_deg, v_degrees_min, v_degrees_max, "%.0f deg", 1.0f);
-    *v_rad = v_deg * (2*IM_PI) / 360.0f;
-    return value_changed;
-}
-
-bool ImGui::SliderInt(const char* label, int* v, int v_min, int v_max, const char* format)
-{
-    return SliderScalar(label, ImGuiDataType_S32, v, &v_min, &v_max, format);
-}
-
-bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* format, float power)
-{
-    return VSliderScalar(label, size, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
-}
-
-bool ImGui::VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format)
-{
-    return VSliderScalar(label, size, ImGuiDataType_S32, v, &v_min, &v_max, format);
-}
-
-// Add multiple sliders on 1 line for compact edition of multiple components
-bool ImGui::SliderScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= SliderScalar("##v", data_type, v, v_min, v_max, format, power);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 2, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 3, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 4, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 2, &v_min, &v_max, format);
-}
-
-bool ImGui::SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 3, &v_min, &v_max, format);
-}
-
-bool ImGui::SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 4, &v_min, &v_max, format);
-}
-
-// This is called by DragBehavior() when the widget is active (held by mouse or being manipulated with Nav controls)
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power)
-{
-    ImGuiContext& g = *GImGui;
-
-    // Default tweak speed
-    bool has_min_max = (v_min != v_max) && (v_max - v_max < FLT_MAX);
-    if (v_speed == 0.0f && has_min_max)
-        v_speed = (float)((v_max - v_min) * g.DragSpeedDefaultRatio);
-
-    // Inputs accumulates into g.DragCurrentAccum, which is flushed into the current value as soon as it makes a difference with our precision settings
-    float adjust_delta = 0.0f;
-    if (g.ActiveIdSource == ImGuiInputSource_Mouse && IsMousePosValid() && g.IO.MouseDragMaxDistanceSqr[0] > 1.0f*1.0f)
-    {
-        adjust_delta = g.IO.MouseDelta.x;
-        if (g.IO.KeyAlt)
-            adjust_delta *= 1.0f/100.0f;
-        if (g.IO.KeyShift)
-            adjust_delta *= 10.0f;
-    }
-    else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-    {
-        int decimal_precision = (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImParseFormatPrecision(format, 3) : 0;
-        adjust_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard|ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 1.0f/10.0f, 10.0f).x;
-        v_speed = ImMax(v_speed, GetMinimumStepAtDecimalPrecision(decimal_precision));
-    }
-    adjust_delta *= v_speed;
-
-    // Clear current value on activation
-    // Avoid altering values and clamping when we are _already_ past the limits and heading in the same direction, so e.g. if range is 0..255, current value is 300 and we are pushing to the right side, keep the 300.
-    bool is_just_activated = g.ActiveIdIsJustActivated;
-    bool is_already_past_limits_and_pushing_outward = has_min_max && ((*v >= v_max && adjust_delta > 0.0f) || (*v <= v_min && adjust_delta < 0.0f));
-    if (is_just_activated || is_already_past_limits_and_pushing_outward)
-    {
-        g.DragCurrentAccum = 0.0f;
-        g.DragCurrentAccumDirty = false;
-    }
-    else if (adjust_delta != 0.0f)
-    {
-        g.DragCurrentAccum += adjust_delta;
-        g.DragCurrentAccumDirty = true;
-    }
-
-    if (!g.DragCurrentAccumDirty)
-        return false;
-
-    TYPE v_cur = *v;
-    FLOATTYPE v_old_ref_for_accum_remainder = (FLOATTYPE)0.0f;
-
-    const bool is_power = (power != 1.0f && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) && has_min_max);
-    if (is_power)
-    {
-        // Offset + round to user desired precision, with a curve on the v_min..v_max range to get more precision on one side of the range
-        FLOATTYPE v_old_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
-        FLOATTYPE v_new_norm_curved = v_old_norm_curved + (g.DragCurrentAccum / (v_max - v_min));
-        v_cur = v_min + (TYPE)ImPow(ImSaturate((float)v_new_norm_curved), power) * (v_max - v_min);
-        v_old_ref_for_accum_remainder = v_old_norm_curved;
-    }
-    else
-    {
-        v_cur += (TYPE)g.DragCurrentAccum;
-    }
-
-    // Round to user desired precision based on format string
-    v_cur = RoundScalarWithFormat<TYPE, SIGNEDTYPE>(format, data_type, v_cur);
-
-    // Preserve remainder after rounding has been applied. This also allow slow tweaking of values.
-    g.DragCurrentAccumDirty = false;
-    if (is_power)
-    {
-        FLOATTYPE v_cur_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
-        g.DragCurrentAccum -= (float)(v_cur_norm_curved - v_old_ref_for_accum_remainder);
-    }
-    else
-    {
-        g.DragCurrentAccum -= (float)((SIGNEDTYPE)v_cur - (SIGNEDTYPE)*v);
-    }
-
-    // Lose zero sign for float/double
-    if (v_cur == (TYPE)-0)
-        v_cur = (TYPE)0;
-
-    // Clamp values (handle overflow/wrap-around)
-    if (*v != v_cur && has_min_max)
-    {
-        if (v_cur < v_min || (v_cur > *v && adjust_delta < 0.0f))
-            v_cur = v_min;
-        if (v_cur > v_max || (v_cur < *v && adjust_delta > 0.0f))
-            v_cur = v_max;
-    }
-
-    // Apply result
-    if (*v == v_cur)
-        return false;
-    *v = v_cur;
-    return true;
-}
-
-bool ImGui::DragBehavior(ImGuiID id, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.ActiveId == id)
-    {
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse && !g.IO.MouseDown[0])
-            ClearActiveID();
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav && g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
-            ClearActiveID();
-    }
-    if (g.ActiveId != id)
-        return false;
-
-    switch (data_type)
-    {
-    case ImGuiDataType_S32:    return DragBehaviorT<ImS32, ImS32, float >(data_type, (ImS32*)v,  v_speed, v_min ? *(const ImS32* )v_min : IM_S32_MIN, v_max ? *(const ImS32* )v_max : IM_S32_MAX, format, power);
-    case ImGuiDataType_U32:    return DragBehaviorT<ImU32, ImS32, float >(data_type, (ImU32*)v,  v_speed, v_min ? *(const ImU32* )v_min : IM_U32_MIN, v_max ? *(const ImU32* )v_max : IM_U32_MAX, format, power);
-    case ImGuiDataType_S64:    return DragBehaviorT<ImS64, ImS64, double>(data_type, (ImS64*)v,  v_speed, v_min ? *(const ImS64* )v_min : IM_S64_MIN, v_max ? *(const ImS64* )v_max : IM_S64_MAX, format, power);
-    case ImGuiDataType_U64:    return DragBehaviorT<ImU64, ImS64, double>(data_type, (ImU64*)v,  v_speed, v_min ? *(const ImU64* )v_min : IM_U64_MIN, v_max ? *(const ImU64* )v_max : IM_U64_MAX, format, power);
-    case ImGuiDataType_Float:  return DragBehaviorT<float, float, float >(data_type, (float*)v,  v_speed, v_min ? *(const float* )v_min : -FLT_MAX,   v_max ? *(const float* )v_max : FLT_MAX,    format, power);
-    case ImGuiDataType_Double: return DragBehaviorT<double,double,double>(data_type, (double*)v, v_speed, v_min ? *(const double*)v_min : -DBL_MAX,   v_max ? *(const double*)v_max : DBL_MAX,    format, power);
-    case ImGuiDataType_COUNT:  break;
-    }
-    IM_ASSERT(0);
-    return false;
-}
-
-bool ImGui::DragScalar(const char* label, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    if (power != 1.0f)
-        IM_ASSERT(v_min != NULL && v_max != NULL); // When using a power curve the drag needs to have known bounds
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
-    if (!ItemAdd(total_bb, id, &frame_bb))
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        return false;
-    }
-    const bool hovered = ItemHoverable(frame_bb, id);
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    // Tabbing or CTRL-clicking on Drag turns it into an input box
-    bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, id);
-    if (tab_focus_requested || (hovered && (g.IO.MouseClicked[0] || g.IO.MouseDoubleClicked[0])) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        if (tab_focus_requested || g.IO.KeyCtrl || g.IO.MouseDoubleClicked[0] || g.NavInputId == id)
-        {
-            start_text_input = true;
-            g.ScalarAsInputTextId = 0;
-        }
-    }
-    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
-        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
-
-    // Actual drag behavior
-    ItemSize(total_bb, style.FramePadding.y);
-    const bool value_changed = DragBehavior(id, data_type, v, v_speed, v_min, v_max, format, power);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, style.FrameRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f, 0.5f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::DragScalarN(const char* label, ImGuiDataType data_type, void* v, int components, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= DragScalar("##v", data_type, v, v_speed, v_min, v_max, format, power);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::DragFloat(const char* label, float* v, float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalar(label, ImGuiDataType_Float, v, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat2(const char* label, float v[2], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 2, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat3(const char* label, float v[3], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 3, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat4(const char* label, float v[4], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 4, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloatRange2(const char* label, float* v_current_min, float* v_current_max, float v_speed, float v_min, float v_max, const char* format, const char* format_max, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    PushID(label);
-    BeginGroup();
-    PushMultiItemsWidths(2);
-
-    bool value_changed = DragFloat("##min", v_current_min, v_speed, (v_min >= v_max) ? -FLT_MAX : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format, power);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-    value_changed |= DragFloat("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? FLT_MAX : v_max, format_max ? format_max : format, power);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    PopID();
-    return value_changed;
-}
-
-// NB: v_speed is float to allow adjusting the drag speed with more precision
-bool ImGui::DragInt(const char* label, int* v, float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalar(label, ImGuiDataType_S32, v, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt2(const char* label, int v[2], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 2, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt3(const char* label, int v[3], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 3, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt4(const char* label, int v[4], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 4, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragIntRange2(const char* label, int* v_current_min, int* v_current_max, float v_speed, int v_min, int v_max, const char* format, const char* format_max)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    PushID(label);
-    BeginGroup();
-    PushMultiItemsWidths(2);
-
-    bool value_changed = DragInt("##min", v_current_min, v_speed, (v_min >= v_max) ? INT_MIN : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-    value_changed |= DragInt("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? INT_MAX : v_max, format_max ? format_max : format);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    PopID();
-
-    return value_changed;
-}
-
-void ImGui::PlotEx(ImGuiPlotType plot_type, const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    if (graph_size.x == 0.0f)
-        graph_size.x = CalcItemWidth();
-    if (graph_size.y == 0.0f)
-        graph_size.y = label_size.y + (style.FramePadding.y * 2);
-
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(graph_size.x, graph_size.y));
-    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0));
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, 0, &frame_bb))
-        return;
-    const bool hovered = ItemHoverable(inner_bb, 0);
-
-    // Determine scale from values if not specified
-    if (scale_min == FLT_MAX || scale_max == FLT_MAX)
-    {
-        float v_min = FLT_MAX;
-        float v_max = -FLT_MAX;
-        for (int i = 0; i < values_count; i++)
-        {
-            const float v = values_getter(data, i);
-            v_min = ImMin(v_min, v);
-            v_max = ImMax(v_max, v);
-        }
-        if (scale_min == FLT_MAX)
-            scale_min = v_min;
-        if (scale_max == FLT_MAX)
-            scale_max = v_max;
-    }
-
-    RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-
-    if (values_count > 0)
-    {
-        int res_w = ImMin((int)graph_size.x, values_count) + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
-        int item_count = values_count + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
-
-        // Tooltip on hover
-        int v_hovered = -1;
-        if (hovered)
-        {
-            const float t = ImClamp((g.IO.MousePos.x - inner_bb.Min.x) / (inner_bb.Max.x - inner_bb.Min.x), 0.0f, 0.9999f);
-            const int v_idx = (int)(t * item_count);
-            IM_ASSERT(v_idx >= 0 && v_idx < values_count);
-
-            const float v0 = values_getter(data, (v_idx + values_offset) % values_count);
-            const float v1 = values_getter(data, (v_idx + 1 + values_offset) % values_count);
-            if (plot_type == ImGuiPlotType_Lines)
-                SetTooltip("%d: %8.4g\n%d: %8.4g", v_idx, v0, v_idx+1, v1);
-            else if (plot_type == ImGuiPlotType_Histogram)
-                SetTooltip("%d: %8.4g", v_idx, v0);
-            v_hovered = v_idx;
-        }
-
-        const float t_step = 1.0f / (float)res_w;
-        const float inv_scale = (scale_min == scale_max) ? 0.0f : (1.0f / (scale_max - scale_min));
-
-        float v0 = values_getter(data, (0 + values_offset) % values_count);
-        float t0 = 0.0f;
-        ImVec2 tp0 = ImVec2( t0, 1.0f - ImSaturate((v0 - scale_min) * inv_scale) );                       // Point in the normalized space of our target rectangle
-        float histogram_zero_line_t = (scale_min * scale_max < 0.0f) ? (-scale_min * inv_scale) : (scale_min < 0.0f ? 0.0f : 1.0f);   // Where does the zero line stands
-
-        const ImU32 col_base = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLines : ImGuiCol_PlotHistogram);
-        const ImU32 col_hovered = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLinesHovered : ImGuiCol_PlotHistogramHovered);
-
-        for (int n = 0; n < res_w; n++)
-        {
-            const float t1 = t0 + t_step;
-            const int v1_idx = (int)(t0 * item_count + 0.5f);
-            IM_ASSERT(v1_idx >= 0 && v1_idx < values_count);
-            const float v1 = values_getter(data, (v1_idx + values_offset + 1) % values_count);
-            const ImVec2 tp1 = ImVec2( t1, 1.0f - ImSaturate((v1 - scale_min) * inv_scale) );
-
-            // NB: Draw calls are merged together by the DrawList system. Still, we should render our batch are lower level to save a bit of CPU.
-            ImVec2 pos0 = ImLerp(inner_bb.Min, inner_bb.Max, tp0);
-            ImVec2 pos1 = ImLerp(inner_bb.Min, inner_bb.Max, (plot_type == ImGuiPlotType_Lines) ? tp1 : ImVec2(tp1.x, histogram_zero_line_t));
-            if (plot_type == ImGuiPlotType_Lines)
-            {
-                window->DrawList->AddLine(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
-            }
-            else if (plot_type == ImGuiPlotType_Histogram)
-            {
-                if (pos1.x >= pos0.x + 2.0f)
-                    pos1.x -= 1.0f;
-                window->DrawList->AddRectFilled(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
-            }
-
-            t0 = t1;
-            tp0 = tp1;
-        }
-    }
-
-    // Text overlay
-    if (overlay_text)
-        RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, overlay_text, NULL, NULL, ImVec2(0.5f,0.0f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
-}
-
-struct ImGuiPlotArrayGetterData
-{
-    const float* Values;
-    int Stride;
-
-    ImGuiPlotArrayGetterData(const float* values, int stride) { Values = values; Stride = stride; }
-};
-
-static float Plot_ArrayGetter(void* data, int idx)
-{
-    ImGuiPlotArrayGetterData* plot_data = (ImGuiPlotArrayGetterData*)data;
-    const float v = *(const float*)(const void*)((const unsigned char*)plot_data->Values + (size_t)idx * plot_data->Stride);
-    return v;
-}
-
-void ImGui::PlotLines(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
-{
-    ImGuiPlotArrayGetterData data(values, stride);
-    PlotEx(ImGuiPlotType_Lines, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotLines(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    PlotEx(ImGuiPlotType_Lines, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotHistogram(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
-{
-    ImGuiPlotArrayGetterData data(values, stride);
-    PlotEx(ImGuiPlotType_Histogram, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotHistogram(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    PlotEx(ImGuiPlotType_Histogram, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-// size_arg (for each axis) < 0.0f: align to end, 0.0f: auto, > 0.0f: specified size
-void ImGui::ProgressBar(float fraction, const ImVec2& size_arg, const char* overlay)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    ImVec2 pos = window->DC.CursorPos;
-    ImRect bb(pos, pos + CalcItemSize(size_arg, CalcItemWidth(), g.FontSize + style.FramePadding.y*2.0f));
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    // Render
-    fraction = ImSaturate(fraction);
-    RenderFrame(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-    bb.Expand(ImVec2(-style.FrameBorderSize, -style.FrameBorderSize));
-    const ImVec2 fill_br = ImVec2(ImLerp(bb.Min.x, bb.Max.x, fraction), bb.Max.y);
-    RenderRectFilledRangeH(window->DrawList, bb, GetColorU32(ImGuiCol_PlotHistogram), 0.0f, fraction, style.FrameRounding);
-
-    // Default displaying the fraction as percentage string, but user can override it
-    char overlay_buf[32];
-    if (!overlay)
-    {
-        ImFormatString(overlay_buf, IM_ARRAYSIZE(overlay_buf), "%.0f%%", fraction*100+0.01f);
-        overlay = overlay_buf;
-    }
-
-    ImVec2 overlay_size = CalcTextSize(overlay, NULL);
-    if (overlay_size.x > 0.0f)
-        RenderTextClipped(ImVec2(ImClamp(fill_br.x + style.ItemSpacing.x, bb.Min.x, bb.Max.x - overlay_size.x - style.ItemInnerSpacing.x), bb.Min.y), bb.Max, overlay, NULL, &overlay_size, ImVec2(0.0f,0.5f), &bb);
-}
-
-bool ImGui::Checkbox(const char* label, bool* v)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2, label_size.y + style.FramePadding.y*2)); // We want a square shape to we use Y twice
-    ItemSize(check_bb, style.FramePadding.y);
-
-    ImRect total_bb = check_bb;
-    if (label_size.x > 0)
-        SameLine(0, style.ItemInnerSpacing.x);
-    const ImRect text_bb(window->DC.CursorPos + ImVec2(0,style.FramePadding.y), window->DC.CursorPos + ImVec2(0,style.FramePadding.y) + label_size);
-    if (label_size.x > 0)
-    {
-        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
-        total_bb = ImRect(ImMin(check_bb.Min, text_bb.Min), ImMax(check_bb.Max, text_bb.Max));
-    }
-
-    if (!ItemAdd(total_bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
-    if (pressed)
-    {
-        *v = !(*v);
-        MarkItemEdited(id);
-    }
-
-    RenderNavHighlight(total_bb, id);
-    RenderFrame(check_bb.Min, check_bb.Max, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), true, style.FrameRounding);
-    if (*v)
-    {
-        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
-        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
-        RenderCheckMark(check_bb.Min + ImVec2(pad,pad), GetColorU32(ImGuiCol_CheckMark), check_bb.GetWidth() - pad*2.0f);
-    }
-
-    if (g.LogEnabled)
-        LogRenderedText(&text_bb.Min, *v ? "[x]" : "[ ]");
-    if (label_size.x > 0.0f)
-        RenderText(text_bb.Min, label);
-
-    return pressed;
-}
-
-bool ImGui::CheckboxFlags(const char* label, unsigned int* flags, unsigned int flags_value)
-{
-    bool v = ((*flags & flags_value) == flags_value);
-    bool pressed = Checkbox(label, &v);
-    if (pressed)
-    {
-        if (v)
-            *flags |= flags_value;
-        else
-            *flags &= ~flags_value;
-    }
-
-    return pressed;
-}
-
-bool ImGui::RadioButton(const char* label, bool active)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2-1, label_size.y + style.FramePadding.y*2-1));
-    ItemSize(check_bb, style.FramePadding.y);
-
-    ImRect total_bb = check_bb;
-    if (label_size.x > 0)
-        SameLine(0, style.ItemInnerSpacing.x);
-    const ImRect text_bb(window->DC.CursorPos + ImVec2(0, style.FramePadding.y), window->DC.CursorPos + ImVec2(0, style.FramePadding.y) + label_size);
-    if (label_size.x > 0)
-    {
-        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
-        total_bb.Add(text_bb);
-    }
-
-    if (!ItemAdd(total_bb, id))
-        return false;
-
-    ImVec2 center = check_bb.GetCenter();
-    center.x = (float)(int)center.x + 0.5f;
-    center.y = (float)(int)center.y + 0.5f;
-    const float radius = check_bb.GetHeight() * 0.5f;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
-    if (pressed)
-        MarkItemEdited(id);
-
-    RenderNavHighlight(total_bb, id);
-    window->DrawList->AddCircleFilled(center, radius, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), 16);
-    if (active)
-    {
-        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
-        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
-        window->DrawList->AddCircleFilled(center, radius-pad, GetColorU32(ImGuiCol_CheckMark), 16);
-    }
-
-    if (style.FrameBorderSize > 0.0f)
-    {
-        window->DrawList->AddCircle(center+ImVec2(1,1), radius, GetColorU32(ImGuiCol_BorderShadow), 16, style.FrameBorderSize);
-        window->DrawList->AddCircle(center, radius, GetColorU32(ImGuiCol_Border), 16, style.FrameBorderSize);
-    }
-
-    if (g.LogEnabled)
-        LogRenderedText(&text_bb.Min, active ? "(x)" : "( )");
-    if (label_size.x > 0.0f)
-        RenderText(text_bb.Min, label);
-
-    return pressed;
-}
-
-bool ImGui::RadioButton(const char* label, int* v, int v_button)
-{
-    const bool pressed = RadioButton(label, *v == v_button);
-    if (pressed)
-        *v = v_button;
-    return pressed;
-}
-
-static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end)
-{
-    int line_count = 0;
-    const char* s = text_begin;
-    while (char c = *s++) // We are only matching for \n so we can ignore UTF-8 decoding
-        if (c == '\n')
-            line_count++;
-    s--;
-    if (s[0] != '\n' && s[0] != '\r')
-        line_count++;
-    *out_text_end = s;
-    return line_count;
-}
-
-static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining, ImVec2* out_offset, bool stop_on_new_line)
-{
-    ImFont* font = GImGui->Font;
-    const float line_height = GImGui->FontSize;
-    const float scale = line_height / font->FontSize;
-
-    ImVec2 text_size = ImVec2(0,0);
-    float line_width = 0.0f;
-
-    const ImWchar* s = text_begin;
-    while (s < text_end)
-    {
-        unsigned int c = (unsigned int)(*s++);
-        if (c == '\n')
-        {
-            text_size.x = ImMax(text_size.x, line_width);
-            text_size.y += line_height;
-            line_width = 0.0f;
-            if (stop_on_new_line)
-                break;
-            continue;
-        }
-        if (c == '\r')
-            continue;
-
-        const float char_width = font->GetCharAdvance((unsigned short)c) * scale;
-        line_width += char_width;
-    }
-
-    if (text_size.x < line_width)
-        text_size.x = line_width;
-
-    if (out_offset)
-        *out_offset = ImVec2(line_width, text_size.y + line_height);  // offset allow for the possibility of sitting after a trailing \n
-
-    if (line_width > 0 || text_size.y == 0.0f)                        // whereas size.y will ignore the trailing \n
-        text_size.y += line_height;
-
-    if (remaining)
-        *remaining = s;
-
-    return text_size;
-}
-
-// Wrapper for stb_textedit.h to edit text (our wrapper is for: statically sized buffer, single-line, wchar characters. InputText converts between UTF-8 and wchar)
-namespace ImGuiStb
-{
-
-static int     STB_TEXTEDIT_STRINGLEN(const STB_TEXTEDIT_STRING* obj)                             { return obj->CurLenW; }
-static ImWchar STB_TEXTEDIT_GETCHAR(const STB_TEXTEDIT_STRING* obj, int idx)                      { return obj->TextW[idx]; }
-static float   STB_TEXTEDIT_GETWIDTH(STB_TEXTEDIT_STRING* obj, int line_start_idx, int char_idx)  { ImWchar c = obj->TextW[line_start_idx+char_idx]; if (c == '\n') return STB_TEXTEDIT_GETWIDTH_NEWLINE; return GImGui->Font->GetCharAdvance(c) * (GImGui->FontSize / GImGui->Font->FontSize); }
-static int     STB_TEXTEDIT_KEYTOTEXT(int key)                                                    { return key >= 0x10000 ? 0 : key; }
-static ImWchar STB_TEXTEDIT_NEWLINE = '\n';
-static void    STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, STB_TEXTEDIT_STRING* obj, int line_start_idx)
-{
-    const ImWchar* text = obj->TextW.Data;
-    const ImWchar* text_remaining = NULL;
-    const ImVec2 size = InputTextCalcTextSizeW(text + line_start_idx, text + obj->CurLenW, &text_remaining, NULL, true);
-    r->x0 = 0.0f;
-    r->x1 = size.x;
-    r->baseline_y_delta = size.y;
-    r->ymin = 0.0f;
-    r->ymax = size.y;
-    r->num_chars = (int)(text_remaining - (text + line_start_idx));
-}
-
-static bool is_separator(unsigned int c)                                        { return ImCharIsBlankW(c) || c==',' || c==';' || c=='(' || c==')' || c=='{' || c=='}' || c=='[' || c==']' || c=='|'; }
-static int  is_word_boundary_from_right(STB_TEXTEDIT_STRING* obj, int idx)      { return idx > 0 ? (is_separator( obj->TextW[idx-1] ) && !is_separator( obj->TextW[idx] ) ) : 1; }
-static int  STB_TEXTEDIT_MOVEWORDLEFT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)   { idx--; while (idx >= 0 && !is_word_boundary_from_right(obj, idx)) idx--; return idx < 0 ? 0 : idx; }
-#ifdef __APPLE__    // FIXME: Move setting to IO structure
-static int  is_word_boundary_from_left(STB_TEXTEDIT_STRING* obj, int idx)       { return idx > 0 ? (!is_separator( obj->TextW[idx-1] ) && is_separator( obj->TextW[idx] ) ) : 1; }
-static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_left(obj, idx)) idx++; return idx > len ? len : idx; }
-#else
-static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_right(obj, idx)) idx++; return idx > len ? len : idx; }
-#endif
-#define STB_TEXTEDIT_MOVEWORDLEFT   STB_TEXTEDIT_MOVEWORDLEFT_IMPL    // They need to be #define for stb_textedit.h
-#define STB_TEXTEDIT_MOVEWORDRIGHT  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL
-
-static void STB_TEXTEDIT_DELETECHARS(STB_TEXTEDIT_STRING* obj, int pos, int n)
-{
-    ImWchar* dst = obj->TextW.Data + pos;
-
-    // We maintain our buffer length in both UTF-8 and wchar formats
-    obj->CurLenA -= ImTextCountUtf8BytesFromStr(dst, dst + n);
-    obj->CurLenW -= n;
-
-    // Offset remaining text
-    const ImWchar* src = obj->TextW.Data + pos + n;
-    while (ImWchar c = *src++)
-        *dst++ = c;
-    *dst = '\0';
-}
-
-static bool STB_TEXTEDIT_INSERTCHARS(STB_TEXTEDIT_STRING* obj, int pos, const ImWchar* new_text, int new_text_len)
-{
-    const bool is_resizable = (obj->UserFlags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int text_len = obj->CurLenW;
-    IM_ASSERT(pos <= text_len);
-
-    const int new_text_len_utf8 = ImTextCountUtf8BytesFromStr(new_text, new_text + new_text_len);
-    if (!is_resizable && (new_text_len_utf8 + obj->CurLenA + 1 > obj->BufCapacityA))
-        return false;
-
-    // Grow internal buffer if needed
-    if (new_text_len + text_len + 1 > obj->TextW.Size)
-    {
-        if (!is_resizable)
-            return false;
-        IM_ASSERT(text_len < obj->TextW.Size);
-        obj->TextW.resize(text_len + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1);
-    }
-
-    ImWchar* text = obj->TextW.Data;
-    if (pos != text_len)
-        memmove(text + pos + new_text_len, text + pos, (size_t)(text_len - pos) * sizeof(ImWchar));
-    memcpy(text + pos, new_text, (size_t)new_text_len * sizeof(ImWchar));
-
-    obj->CurLenW += new_text_len;
-    obj->CurLenA += new_text_len_utf8;
-    obj->TextW[obj->CurLenW] = '\0';
-
-    return true;
-}
-
-// We don't use an enum so we can build even with conflicting symbols (if another user of stb_textedit.h leak their STB_TEXTEDIT_K_* symbols)
-#define STB_TEXTEDIT_K_LEFT         0x10000 // keyboard input to move cursor left
-#define STB_TEXTEDIT_K_RIGHT        0x10001 // keyboard input to move cursor right
-#define STB_TEXTEDIT_K_UP           0x10002 // keyboard input to move cursor up
-#define STB_TEXTEDIT_K_DOWN         0x10003 // keyboard input to move cursor down
-#define STB_TEXTEDIT_K_LINESTART    0x10004 // keyboard input to move cursor to start of line
-#define STB_TEXTEDIT_K_LINEEND      0x10005 // keyboard input to move cursor to end of line
-#define STB_TEXTEDIT_K_TEXTSTART    0x10006 // keyboard input to move cursor to start of text
-#define STB_TEXTEDIT_K_TEXTEND      0x10007 // keyboard input to move cursor to end of text
-#define STB_TEXTEDIT_K_DELETE       0x10008 // keyboard input to delete selection or character under cursor
-#define STB_TEXTEDIT_K_BACKSPACE    0x10009 // keyboard input to delete selection or character left of cursor
-#define STB_TEXTEDIT_K_UNDO         0x1000A // keyboard input to perform undo
-#define STB_TEXTEDIT_K_REDO         0x1000B // keyboard input to perform redo
-#define STB_TEXTEDIT_K_WORDLEFT     0x1000C // keyboard input to move cursor left one word
-#define STB_TEXTEDIT_K_WORDRIGHT    0x1000D // keyboard input to move cursor right one word
-#define STB_TEXTEDIT_K_SHIFT        0x20000
-
-#define STB_TEXTEDIT_IMPLEMENTATION
-#include "stb_textedit.h"
-
-}
-
-void ImGuiInputTextState::OnKeyPressed(int key)
-{
-    stb_textedit_key(this, &StbState, key);
-    CursorFollow = true;
-    CursorAnimReset();
-}
-
-ImGuiInputTextCallbackData::ImGuiInputTextCallbackData()
-{
-    memset(this, 0, sizeof(*this));
-}
-
-// Public API to manipulate UTF-8 text
-// We expose UTF-8 to the user (unlike the STB_TEXTEDIT_* functions which are manipulating wchar)
-// FIXME: The existence of this rarely exercised code path is a bit of a nuisance.
-void ImGuiInputTextCallbackData::DeleteChars(int pos, int bytes_count)
-{
-    IM_ASSERT(pos + bytes_count <= BufTextLen);
-    char* dst = Buf + pos;
-    const char* src = Buf + pos + bytes_count;
-    while (char c = *src++)
-        *dst++ = c;
-    *dst = '\0';
-
-    if (CursorPos + bytes_count >= pos)
-        CursorPos -= bytes_count;
-    else if (CursorPos >= pos)
-        CursorPos = pos;
-    SelectionStart = SelectionEnd = CursorPos;
-    BufDirty = true;
-    BufTextLen -= bytes_count;
-}
-
-void ImGuiInputTextCallbackData::InsertChars(int pos, const char* new_text, const char* new_text_end)
-{
-    const bool is_resizable = (Flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int new_text_len = new_text_end ? (int)(new_text_end - new_text) : (int)strlen(new_text);
-    if (new_text_len + BufTextLen >= BufSize)
-    {
-        if (!is_resizable)
-            return;
-
-        // Contrary to STB_TEXTEDIT_INSERTCHARS() this is working in the UTF8 buffer, hence the midly similar code (until we remove the U16 buffer alltogether!)
-        ImGuiContext& g = *GImGui;
-        ImGuiInputTextState* edit_state = &g.InputTextState;
-        IM_ASSERT(edit_state->ID != 0 && g.ActiveId == edit_state->ID);
-        IM_ASSERT(Buf == edit_state->TempBuffer.Data);
-        int new_buf_size = BufTextLen + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1;
-        edit_state->TempBuffer.reserve(new_buf_size + 1);
-        Buf = edit_state->TempBuffer.Data;
-        BufSize = edit_state->BufCapacityA = new_buf_size;
-    }
-
-    if (BufTextLen != pos)
-        memmove(Buf + pos + new_text_len, Buf + pos, (size_t)(BufTextLen - pos));
-    memcpy(Buf + pos, new_text, (size_t)new_text_len * sizeof(char));
-    Buf[BufTextLen + new_text_len] = '\0';
-
-    if (CursorPos >= pos)
-        CursorPos += new_text_len;
-    SelectionStart = SelectionEnd = CursorPos;
-    BufDirty = true;
-    BufTextLen += new_text_len;
-}
-
-// Return false to discard a character.
-static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    unsigned int c = *p_char;
-
-    if (c < 128 && c != ' ' && !isprint((int)(c & 0xFF)))
-    {
-        bool pass = false;
-        pass |= (c == '\n' && (flags & ImGuiInputTextFlags_Multiline));
-        pass |= (c == '\t' && (flags & ImGuiInputTextFlags_AllowTabInput));
-        if (!pass)
-            return false;
-    }
-
-    if (c >= 0xE000 && c <= 0xF8FF) // Filter private Unicode range. I don't imagine anybody would want to input them. GLFW on OSX seems to send private characters for special keys like arrow keys.
-        return false;
-
-    if (flags & (ImGuiInputTextFlags_CharsDecimal | ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase | ImGuiInputTextFlags_CharsNoBlank | ImGuiInputTextFlags_CharsScientific))
-    {
-        if (flags & ImGuiInputTextFlags_CharsDecimal)
-            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsScientific)
-            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/') && (c != 'e') && (c != 'E'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsHexadecimal)
-            if (!(c >= '0' && c <= '9') && !(c >= 'a' && c <= 'f') && !(c >= 'A' && c <= 'F'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsUppercase)
-            if (c >= 'a' && c <= 'z')
-                *p_char = (c += (unsigned int)('A'-'a'));
-
-        if (flags & ImGuiInputTextFlags_CharsNoBlank)
-            if (ImCharIsBlankW(c))
-                return false;
-    }
-
-    if (flags & ImGuiInputTextFlags_CallbackCharFilter)
-    {
-        ImGuiInputTextCallbackData callback_data;
-        memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
-        callback_data.EventFlag = ImGuiInputTextFlags_CallbackCharFilter;
-        callback_data.EventChar = (ImWchar)c;
-        callback_data.Flags = flags;
-        callback_data.UserData = user_data;
-        if (callback(&callback_data) != 0)
-            return false;
-        *p_char = callback_data.EventChar;
-        if (!callback_data.EventChar)
-            return false;
-    }
-
-    return true;
-}
-
-// Edit a string of text
-// - buf_size account for the zero-terminator, so a buf_size of 6 can hold "Hello" but not "Hello!".
-//   This is so we can easily call InputText() on static arrays using ARRAYSIZE() and to match 
-//   Note that in std::string world, capacity() would omit 1 byte used by the zero-terminator.
-// - When active, hold on a privately held copy of the text (and apply back to 'buf'). So changing 'buf' while the InputText is active has no effect.
-// - If you want to use ImGui::InputText() with std::string, see misc/stl/imgui_stl.h
-// (FIXME: Rather messy function partly because we are doing UTF8 > u16 > UTF8 conversions on the go to more easily handle stb_textedit calls. Ideally we should stay in UTF-8 all the time. See https://github.com/nothings/stb/issues/188)
-bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2& size_arg, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* callback_user_data)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackHistory) && (flags & ImGuiInputTextFlags_Multiline)));        // Can't use both together (they both use up/down keys)
-    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackCompletion) && (flags & ImGuiInputTextFlags_AllowTabInput))); // Can't use both together (they both use tab key)
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiIO& io = g.IO;
-    const ImGuiStyle& style = g.Style;
-
-    const bool is_multiline = (flags & ImGuiInputTextFlags_Multiline) != 0;
-    const bool is_editable = (flags & ImGuiInputTextFlags_ReadOnly) == 0;
-    const bool is_password = (flags & ImGuiInputTextFlags_Password) != 0;
-    const bool is_undoable = (flags & ImGuiInputTextFlags_NoUndoRedo) == 0;
-    const bool is_resizable = (flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    if (is_resizable)
-        IM_ASSERT(callback != NULL); // Must provide a callback if you set the ImGuiInputTextFlags_CallbackResize flag!
-
-    if (is_multiline) // Open group before calling GetID() because groups tracks id created within their scope, 
-        BeginGroup();
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), (is_multiline ? GetTextLineHeight() * 8.0f : label_size.y) + style.FramePadding.y*2.0f); // Arbitrary default of 8 lines high for multi-line
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? (style.ItemInnerSpacing.x + label_size.x) : 0.0f, 0.0f));
-
-    ImGuiWindow* draw_window = window;
-    if (is_multiline)
-    {
-        ItemAdd(total_bb, id, &frame_bb);
-        if (!BeginChildFrame(id, frame_bb.GetSize()))
-        {
-            EndChildFrame();
-            EndGroup();
-            return false;
-        }
-        draw_window = GetCurrentWindow();
-        draw_window->DC.NavLayerActiveMaskNext |= draw_window->DC.NavLayerCurrentMask; // This is to ensure that EndChild() will display a navigation highlight
-        size.x -= draw_window->ScrollbarSizes.x;
-    }
-    else
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        if (!ItemAdd(total_bb, id, &frame_bb))
-            return false;
-    }
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if (hovered)
-        g.MouseCursor = ImGuiMouseCursor_TextInput;
-
-    // Password pushes a temporary font with only a fallback glyph
-    if (is_password)
-    {
-        const ImFontGlyph* glyph = g.Font->FindGlyph('*');
-        ImFont* password_font = &g.InputTextPasswordFont;
-        password_font->FontSize = g.Font->FontSize;
-        password_font->Scale = g.Font->Scale;
-        password_font->DisplayOffset = g.Font->DisplayOffset;
-        password_font->Ascent = g.Font->Ascent;
-        password_font->Descent = g.Font->Descent;
-        password_font->ContainerAtlas = g.Font->ContainerAtlas;
-        password_font->FallbackGlyph = glyph;
-        password_font->FallbackAdvanceX = glyph->AdvanceX;
-        IM_ASSERT(password_font->Glyphs.empty() && password_font->IndexAdvanceX.empty() && password_font->IndexLookup.empty());
-        PushFont(password_font);
-    }
-
-    // NB: we are only allowed to access 'edit_state' if we are the active widget.
-    ImGuiInputTextState& edit_state = g.InputTextState;
-
-    const bool focus_requested = FocusableItemRegister(window, id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0);    // Using completion callback disable keyboard tabbing
-    const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent);
-    const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code;
-
-    const bool user_clicked = hovered && io.MouseClicked[0];
-    const bool user_scrolled = is_multiline && g.ActiveId == 0 && edit_state.ID == id && g.ActiveIdPreviousFrame == draw_window->GetIDNoKeepAlive("#SCROLLY");
-    const bool user_nav_input_start = (g.ActiveId != id) && ((g.NavInputId == id) || (g.NavActivateId == id && g.NavInputSource == ImGuiInputSource_NavKeyboard));
-
-    bool clear_active_id = false;
-
-    bool select_all = (g.ActiveId != id) && ((flags & ImGuiInputTextFlags_AutoSelectAll) != 0 || user_nav_input_start) && (!is_multiline);
-    if (focus_requested || user_clicked || user_scrolled || user_nav_input_start)
-    {
-        if (g.ActiveId != id)
-        {
-            // Start edition
-            // Take a copy of the initial buffer value (both in original UTF-8 format and converted to wchar)
-            // From the moment we focused we are ignoring the content of 'buf' (unless we are in read-only mode)
-            const int prev_len_w = edit_state.CurLenW;
-            const int init_buf_len = (int)strlen(buf);
-            edit_state.TextW.resize(buf_size+1);             // wchar count <= UTF-8 count. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
-            edit_state.InitialText.resize(init_buf_len + 1); // UTF-8. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
-            memcpy(edit_state.InitialText.Data, buf, init_buf_len + 1);
-            const char* buf_end = NULL;
-            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, buf_size, buf, NULL, &buf_end);
-            edit_state.CurLenA = (int)(buf_end - buf); // We can't get the result from ImStrncpy() above because it is not UTF-8 aware. Here we'll cut off malformed UTF-8.
-            edit_state.CursorAnimReset();
-
-            // Preserve cursor position and undo/redo stack if we come back to same widget
-            // FIXME: We should probably compare the whole buffer to be on the safety side. Comparing buf (utf8) and edit_state.Text (wchar).
-            const bool recycle_state = (edit_state.ID == id) && (prev_len_w == edit_state.CurLenW);
-            if (recycle_state)
-            {
-                // Recycle existing cursor/selection/undo stack but clamp position
-                // Note a single mouse click will override the cursor/position immediately by calling stb_textedit_click handler.
-                edit_state.CursorClamp();
-            }
-            else
-            {
-                edit_state.ID = id;
-                edit_state.ScrollX = 0.0f;
-                stb_textedit_initialize_state(&edit_state.StbState, !is_multiline);
-                if (!is_multiline && focus_requested_by_code)
-                    select_all = true;
-            }
-            if (flags & ImGuiInputTextFlags_AlwaysInsertMode)
-                edit_state.StbState.insert_mode = true;
-            if (!is_multiline && (focus_requested_by_tab || (user_clicked && io.KeyCtrl)))
-                select_all = true;
-        }
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        if (!is_multiline && !(flags & ImGuiInputTextFlags_CallbackHistory))
-            g.ActiveIdAllowNavDirFlags |= ((1 << ImGuiDir_Up) | (1 << ImGuiDir_Down));
-    }
-    else if (io.MouseClicked[0])
-    {
-        // Release focus when we click outside
-        clear_active_id = true;
-    }
-
-    bool value_changed = false;
-    bool enter_pressed = false;
-    int backup_current_text_length = 0;
-
-    if (g.ActiveId == id)
-    {
-        if (!is_editable && !g.ActiveIdIsJustActivated)
-        {
-            // When read-only we always use the live data passed to the function
-            edit_state.TextW.resize(buf_size+1);
-            const char* buf_end = NULL;
-            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, buf, NULL, &buf_end);
-            edit_state.CurLenA = (int)(buf_end - buf);
-            edit_state.CursorClamp();
-        }
-
-        backup_current_text_length = edit_state.CurLenA;
-        edit_state.BufCapacityA = buf_size;
-        edit_state.UserFlags = flags;
-        edit_state.UserCallback = callback;
-        edit_state.UserCallbackData = callback_user_data;
-
-        // Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.
-        // Down the line we should have a cleaner library-wide concept of Selected vs Active.
-        g.ActiveIdAllowOverlap = !io.MouseDown[0];
-        g.WantTextInputNextFrame = 1;
-
-        // Edit in progress
-        const float mouse_x = (io.MousePos.x - frame_bb.Min.x - style.FramePadding.x) + edit_state.ScrollX;
-        const float mouse_y = (is_multiline ? (io.MousePos.y - draw_window->DC.CursorPos.y - style.FramePadding.y) : (g.FontSize*0.5f));
-
-        const bool is_osx = io.ConfigMacOSXBehaviors;
-        if (select_all || (hovered && !is_osx && io.MouseDoubleClicked[0]))
-        {
-            edit_state.SelectAll();
-            edit_state.SelectedAllMouseLock = true;
-        }
-        else if (hovered && is_osx && io.MouseDoubleClicked[0])
-        {
-            // Double-click select a word only, OS X style (by simulating keystrokes)
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT);
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDRIGHT | STB_TEXTEDIT_K_SHIFT);
-        }
-        else if (io.MouseClicked[0] && !edit_state.SelectedAllMouseLock)
-        {
-            if (hovered)
-            {
-                stb_textedit_click(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
-                edit_state.CursorAnimReset();
-            }
-        }
-        else if (io.MouseDown[0] && !edit_state.SelectedAllMouseLock && (io.MouseDelta.x != 0.0f || io.MouseDelta.y != 0.0f))
-        {
-            stb_textedit_drag(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
-            edit_state.CursorAnimReset();
-            edit_state.CursorFollow = true;
-        }
-        if (edit_state.SelectedAllMouseLock && !io.MouseDown[0])
-            edit_state.SelectedAllMouseLock = false;
-
-        if (io.InputCharacters[0])
-        {
-            // Process text input (before we check for Return because using some IME will effectively send a Return?)
-            // We ignore CTRL inputs, but need to allow ALT+CTRL as some keyboards (e.g. German) use AltGR (which _is_ Alt+Ctrl) to input certain characters.
-            bool ignore_inputs = (io.KeyCtrl && !io.KeyAlt) || (is_osx && io.KeySuper);
-            if (!ignore_inputs && is_editable && !user_nav_input_start)
-                for (int n = 0; n < IM_ARRAYSIZE(io.InputCharacters) && io.InputCharacters[n]; n++)
-                {
-                    // Insert character if they pass filtering
-                    unsigned int c = (unsigned int)io.InputCharacters[n];
-                    if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                        edit_state.OnKeyPressed((int)c);
-                }
-
-            // Consume characters
-            memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters));
-        }
-    }
-
-    bool cancel_edit = false;
-    if (g.ActiveId == id && !g.ActiveIdIsJustActivated && !clear_active_id)
-    {
-        // Handle key-presses
-        const int k_mask = (io.KeyShift ? STB_TEXTEDIT_K_SHIFT : 0);
-        const bool is_osx = io.ConfigMacOSXBehaviors;
-        const bool is_shortcut_key = (is_osx ? (io.KeySuper && !io.KeyCtrl) : (io.KeyCtrl && !io.KeySuper)) && !io.KeyAlt && !io.KeyShift; // OS X style: Shortcuts using Cmd/Super instead of Ctrl
-        const bool is_osx_shift_shortcut = is_osx && io.KeySuper && io.KeyShift && !io.KeyCtrl && !io.KeyAlt;
-        const bool is_wordmove_key_down = is_osx ? io.KeyAlt : io.KeyCtrl;                     // OS X style: Text editing cursor movement using Alt instead of Ctrl
-        const bool is_startend_key_down = is_osx && io.KeySuper && !io.KeyCtrl && !io.KeyAlt;  // OS X style: Line/Text Start and End using Cmd+Arrows instead of Home/End
-        const bool is_ctrl_key_only = io.KeyCtrl && !io.KeyShift && !io.KeyAlt && !io.KeySuper;
-        const bool is_shift_key_only = io.KeyShift && !io.KeyCtrl && !io.KeyAlt && !io.KeySuper;
-
-        const bool is_cut   = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_X)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Delete))) && is_editable && !is_password && (!is_multiline || edit_state.HasSelection());
-        const bool is_copy  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_C)) || (is_ctrl_key_only  && IsKeyPressedMap(ImGuiKey_Insert))) && !is_password && (!is_multiline || edit_state.HasSelection());
-        const bool is_paste = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_V)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Insert))) && is_editable;
-        const bool is_undo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Z)) && is_editable && is_undoable);
-        const bool is_redo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Y)) || (is_osx_shift_shortcut && IsKeyPressedMap(ImGuiKey_Z))) && is_editable && is_undoable;
-
-        if (IsKeyPressedMap(ImGuiKey_LeftArrow))                        { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINESTART : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDLEFT : STB_TEXTEDIT_K_LEFT) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_RightArrow))                  { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINEEND : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDRIGHT : STB_TEXTEDIT_K_RIGHT) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_UpArrow) && is_multiline)     { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMax(draw_window->Scroll.y - g.FontSize, 0.0f)); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTSTART : STB_TEXTEDIT_K_UP) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_DownArrow) && is_multiline)   { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMin(draw_window->Scroll.y + g.FontSize, GetScrollMaxY())); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTEND : STB_TEXTEDIT_K_DOWN) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Home))                        { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_End))                         { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Delete) && is_editable)       { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Backspace) && is_editable)
-        {
-            if (!edit_state.HasSelection())
-            {
-                if (is_wordmove_key_down) edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT|STB_TEXTEDIT_K_SHIFT);
-                else if (is_osx && io.KeySuper && !io.KeyAlt && !io.KeyCtrl) edit_state.OnKeyPressed(STB_TEXTEDIT_K_LINESTART|STB_TEXTEDIT_K_SHIFT);
-            }
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_BACKSPACE | k_mask);
-        }
-        else if (IsKeyPressedMap(ImGuiKey_Enter))
-        {
-            bool ctrl_enter_for_new_line = (flags & ImGuiInputTextFlags_CtrlEnterForNewLine) != 0;
-            if (!is_multiline || (ctrl_enter_for_new_line && !io.KeyCtrl) || (!ctrl_enter_for_new_line && io.KeyCtrl))
-            {
-                enter_pressed = clear_active_id = true;
-            }
-            else if (is_editable)
-            {
-                unsigned int c = '\n'; // Insert new line
-                if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                    edit_state.OnKeyPressed((int)c);
-            }
-        }
-        else if ((flags & ImGuiInputTextFlags_AllowTabInput) && IsKeyPressedMap(ImGuiKey_Tab) && !io.KeyCtrl && !io.KeyShift && !io.KeyAlt && is_editable)
-        {
-            unsigned int c = '\t'; // Insert TAB
-            if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                edit_state.OnKeyPressed((int)c);
-        }
-        else if (IsKeyPressedMap(ImGuiKey_Escape))
-        {
-            clear_active_id = cancel_edit = true;
-        }
-        else if (is_undo || is_redo)
-        {
-            edit_state.OnKeyPressed(is_undo ? STB_TEXTEDIT_K_UNDO : STB_TEXTEDIT_K_REDO);
-            edit_state.ClearSelection();
-        }
-        else if (is_shortcut_key && IsKeyPressedMap(ImGuiKey_A))
-        {
-            edit_state.SelectAll();
-            edit_state.CursorFollow = true;
-        }
-        else if (is_cut || is_copy)
-        {
-            // Cut, Copy
-            if (io.SetClipboardTextFn)
-            {
-                const int ib = edit_state.HasSelection() ? ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end) : 0;
-                const int ie = edit_state.HasSelection() ? ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end) : edit_state.CurLenW;
-                edit_state.TempBuffer.resize((ie-ib) * 4 + 1);
-                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data+ib, edit_state.TextW.Data+ie);
-                SetClipboardText(edit_state.TempBuffer.Data);
-            }
-            if (is_cut)
-            {
-                if (!edit_state.HasSelection())
-                    edit_state.SelectAll();
-                edit_state.CursorFollow = true;
-                stb_textedit_cut(&edit_state, &edit_state.StbState);
-            }
-        }
-        else if (is_paste)
-        {
-            if (const char* clipboard = GetClipboardText())
-            {
-                // Filter pasted buffer
-                const int clipboard_len = (int)strlen(clipboard);
-                ImWchar* clipboard_filtered = (ImWchar*)ImGui::MemAlloc((clipboard_len+1) * sizeof(ImWchar));
-                int clipboard_filtered_len = 0;
-                for (const char* s = clipboard; *s; )
-                {
-                    unsigned int c;
-                    s += ImTextCharFromUtf8(&c, s, NULL);
-                    if (c == 0)
-                        break;
-                    if (c >= 0x10000 || !InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                        continue;
-                    clipboard_filtered[clipboard_filtered_len++] = (ImWchar)c;
-                }
-                clipboard_filtered[clipboard_filtered_len] = 0;
-                if (clipboard_filtered_len > 0) // If everything was filtered, ignore the pasting operation
-                {
-                    stb_textedit_paste(&edit_state, &edit_state.StbState, clipboard_filtered, clipboard_filtered_len);
-                    edit_state.CursorFollow = true;
-                }
-                ImGui::MemFree(clipboard_filtered);
-            }
-        }
-    }
-
-    if (g.ActiveId == id)
-    {
-        const char* apply_new_text = NULL;
-        int apply_new_text_length = 0;
-        if (cancel_edit)
-        {
-            // Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
-            if (is_editable && strcmp(buf, edit_state.InitialText.Data) != 0)
-            {
-                apply_new_text = edit_state.InitialText.Data;
-                apply_new_text_length = edit_state.InitialText.Size - 1;
-            }
-        }
-
-        // When using 'ImGuiInputTextFlags_EnterReturnsTrue' as a special case we reapply the live buffer back to the input buffer before clearing ActiveId, even though strictly speaking it wasn't modified on this frame.
-        // If we didn't do that, code like InputInt() with ImGuiInputTextFlags_EnterReturnsTrue would fail. Also this allows the user to use InputText() with ImGuiInputTextFlags_EnterReturnsTrue without maintaining any user-side storage.
-        bool apply_edit_back_to_user_buffer = !cancel_edit || (enter_pressed && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
-        if (apply_edit_back_to_user_buffer)
-        {
-            // Apply new value immediately - copy modified buffer back
-            // Note that as soon as the input box is active, the in-widget value gets priority over any underlying modification of the input buffer
-            // FIXME: We actually always render 'buf' when calling DrawList->AddText, making the comment above incorrect.
-            // FIXME-OPT: CPU waste to do this every time the widget is active, should mark dirty state from the stb_textedit callbacks.
-            if (is_editable)
-            {
-                edit_state.TempBuffer.resize(edit_state.TextW.Size * 4 + 1);
-                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data, NULL);
-            }
-
-            // User callback
-            if ((flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_CallbackHistory | ImGuiInputTextFlags_CallbackAlways)) != 0)
-            {
-                IM_ASSERT(callback != NULL);
-
-                // The reason we specify the usage semantic (Completion/History) is that Completion needs to disable keyboard TABBING at the moment.
-                ImGuiInputTextFlags event_flag = 0;
-                ImGuiKey event_key = ImGuiKey_COUNT;
-                if ((flags & ImGuiInputTextFlags_CallbackCompletion) != 0 && IsKeyPressedMap(ImGuiKey_Tab))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackCompletion;
-                    event_key = ImGuiKey_Tab;
-                }
-                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_UpArrow))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackHistory;
-                    event_key = ImGuiKey_UpArrow;
-                }
-                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_DownArrow))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackHistory;
-                    event_key = ImGuiKey_DownArrow;
-                }
-                else if (flags & ImGuiInputTextFlags_CallbackAlways)
-                    event_flag = ImGuiInputTextFlags_CallbackAlways;
-
-                if (event_flag)
-                {
-                    ImGuiInputTextCallbackData callback_data;
-                    memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
-                    callback_data.EventFlag = event_flag;
-                    callback_data.Flags = flags;
-                    callback_data.UserData = callback_user_data;
-
-                    callback_data.EventKey = event_key;
-                    callback_data.Buf = edit_state.TempBuffer.Data;
-                    callback_data.BufTextLen = edit_state.CurLenA;
-                    callback_data.BufSize = edit_state.BufCapacityA;
-                    callback_data.BufDirty = false;
-
-                    // We have to convert from wchar-positions to UTF-8-positions, which can be pretty slow (an incentive to ditch the ImWchar buffer, see https://github.com/nothings/stb/issues/188)
-                    ImWchar* text = edit_state.TextW.Data;
-                    const int utf8_cursor_pos = callback_data.CursorPos = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.cursor);
-                    const int utf8_selection_start = callback_data.SelectionStart = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_start);
-                    const int utf8_selection_end = callback_data.SelectionEnd = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_end);
-
-                    // Call user code
-                    callback(&callback_data);
-
-                    // Read back what user may have modified
-                    IM_ASSERT(callback_data.Buf == edit_state.TempBuffer.Data);  // Invalid to modify those fields
-                    IM_ASSERT(callback_data.BufSize == edit_state.BufCapacityA);
-                    IM_ASSERT(callback_data.Flags == flags);
-                    if (callback_data.CursorPos != utf8_cursor_pos)            { edit_state.StbState.cursor = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.CursorPos); edit_state.CursorFollow = true; }
-                    if (callback_data.SelectionStart != utf8_selection_start)  { edit_state.StbState.select_start = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionStart); }
-                    if (callback_data.SelectionEnd != utf8_selection_end)      { edit_state.StbState.select_end = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionEnd); }
-                    if (callback_data.BufDirty)
-                    {
-                        IM_ASSERT(callback_data.BufTextLen == (int)strlen(callback_data.Buf)); // You need to maintain BufTextLen if you change the text!
-                        if (callback_data.BufTextLen > backup_current_text_length && is_resizable)
-                            edit_state.TextW.resize(edit_state.TextW.Size + (callback_data.BufTextLen - backup_current_text_length));
-                        edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, callback_data.Buf, NULL);
-                        edit_state.CurLenA = callback_data.BufTextLen;  // Assume correct length and valid UTF-8 from user, saves us an extra strlen()
-                        edit_state.CursorAnimReset();
-                    }
-                }
-            }
-
-            // Will copy result string if modified
-            if (is_editable && strcmp(edit_state.TempBuffer.Data, buf) != 0)
-            {
-                apply_new_text = edit_state.TempBuffer.Data;
-                apply_new_text_length = edit_state.CurLenA;
-            }
-        }
-
-        // Copy result to user buffer
-        if (apply_new_text)
-        {
-            IM_ASSERT(apply_new_text_length >= 0);
-            if (backup_current_text_length != apply_new_text_length && is_resizable)
-            {
-                ImGuiInputTextCallbackData callback_data;
-                callback_data.EventFlag = ImGuiInputTextFlags_CallbackResize;
-                callback_data.Flags = flags;
-                callback_data.Buf = buf;
-                callback_data.BufTextLen = apply_new_text_length;
-                callback_data.BufSize = ImMax(buf_size, apply_new_text_length + 1);
-                callback_data.UserData = callback_user_data;
-                callback(&callback_data);
-                buf = callback_data.Buf;
-                buf_size = callback_data.BufSize;
-                apply_new_text_length = ImMin(callback_data.BufTextLen, buf_size - 1);
-                IM_ASSERT(apply_new_text_length <= buf_size);
-            }
-
-            // If the underlying buffer resize was denied or not carried to the next frame, apply_new_text_length+1 may be >= buf_size.
-            ImStrncpy(buf, edit_state.TempBuffer.Data, ImMin(apply_new_text_length + 1, buf_size));
-            value_changed = true;
-        }
-
-        // Clear temporary user storage
-        edit_state.UserFlags = 0;
-        edit_state.UserCallback = NULL;
-        edit_state.UserCallbackData = NULL;
-    }
-
-    // Release active ID at the end of the function (so e.g. pressing Return still does a final application of the value)
-    if (clear_active_id && g.ActiveId == id)
-        ClearActiveID();
-
-    // Render
-    // Select which buffer we are going to display. When ImGuiInputTextFlags_NoLiveEdit is set 'buf' might still be the old value. We set buf to NULL to prevent accidental usage from now on.
-    const char* buf_display = (g.ActiveId == id && is_editable) ? edit_state.TempBuffer.Data : buf; buf = NULL;
-
-    // Set upper limit of single-line InputTextEx() at 2 million characters strings. The current pathological worst case is a long line
-    // without any carriage return, which would makes ImFont::RenderText() reserve too many vertices and probably crash. Avoid it altogether.
-    // Note that we only use this limit on single-line InputText(), so a pathologically large line on a InputTextMultiline() would still crash.
-    const int buf_display_max_length = 2 * 1024 * 1024;
-
-    if (!is_multiline)
-    {
-        RenderNavHighlight(frame_bb, id);
-        RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-    }
-
-    const ImVec4 clip_rect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + size.x, frame_bb.Min.y + size.y); // Not using frame_bb.Max because we have adjusted size
-    ImVec2 render_pos = is_multiline ? draw_window->DC.CursorPos : frame_bb.Min + style.FramePadding;
-    ImVec2 text_size(0.f, 0.f);
-    const bool is_currently_scrolling = (edit_state.ID == id && is_multiline && g.ActiveId == draw_window->GetIDNoKeepAlive("#SCROLLY"));
-    if (g.ActiveId == id || is_currently_scrolling)
-    {
-        edit_state.CursorAnim += io.DeltaTime;
-
-        // This is going to be messy. We need to:
-        // - Display the text (this alone can be more easily clipped)
-        // - Handle scrolling, highlight selection, display cursor (those all requires some form of 1d->2d cursor position calculation)
-        // - Measure text height (for scrollbar)
-        // We are attempting to do most of that in **one main pass** to minimize the computation cost (non-negligible for large amount of text) + 2nd pass for selection rendering (we could merge them by an extra refactoring effort)
-        // FIXME: This should occur on buf_display but we'd need to maintain cursor/select_start/select_end for UTF-8.
-        const ImWchar* text_begin = edit_state.TextW.Data;
-        ImVec2 cursor_offset, select_start_offset;
-
-        {
-            // Count lines + find lines numbers straddling 'cursor' and 'select_start' position.
-            const ImWchar* searches_input_ptr[2];
-            searches_input_ptr[0] = text_begin + edit_state.StbState.cursor;
-            searches_input_ptr[1] = NULL;
-            int searches_remaining = 1;
-            int searches_result_line_number[2] = { -1, -999 };
-            if (edit_state.StbState.select_start != edit_state.StbState.select_end)
-            {
-                searches_input_ptr[1] = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
-                searches_result_line_number[1] = -1;
-                searches_remaining++;
-            }
-
-            // Iterate all lines to find our line numbers
-            // In multi-line mode, we never exit the loop until all lines are counted, so add one extra to the searches_remaining counter.
-            searches_remaining += is_multiline ? 1 : 0;
-            int line_count = 0;
-            for (const ImWchar* s = text_begin; *s != 0; s++)
-                if (*s == '\n')
-                {
-                    line_count++;
-                    if (searches_result_line_number[0] == -1 && s >= searches_input_ptr[0]) { searches_result_line_number[0] = line_count; if (--searches_remaining <= 0) break; }
-                    if (searches_result_line_number[1] == -1 && s >= searches_input_ptr[1]) { searches_result_line_number[1] = line_count; if (--searches_remaining <= 0) break; }
-                }
-            line_count++;
-            if (searches_result_line_number[0] == -1) searches_result_line_number[0] = line_count;
-            if (searches_result_line_number[1] == -1) searches_result_line_number[1] = line_count;
-
-            // Calculate 2d position by finding the beginning of the line and measuring distance
-            cursor_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[0], text_begin), searches_input_ptr[0]).x;
-            cursor_offset.y = searches_result_line_number[0] * g.FontSize;
-            if (searches_result_line_number[1] >= 0)
-            {
-                select_start_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[1], text_begin), searches_input_ptr[1]).x;
-                select_start_offset.y = searches_result_line_number[1] * g.FontSize;
-            }
-
-            // Store text height (note that we haven't calculated text width at all, see GitHub issues #383, #1224)
-            if (is_multiline)
-                text_size = ImVec2(size.x, line_count * g.FontSize);
-        }
-
-        // Scroll
-        if (edit_state.CursorFollow)
-        {
-            // Horizontal scroll in chunks of quarter width
-            if (!(flags & ImGuiInputTextFlags_NoHorizontalScroll))
-            {
-                const float scroll_increment_x = size.x * 0.25f;
-                if (cursor_offset.x < edit_state.ScrollX)
-                    edit_state.ScrollX = (float)(int)ImMax(0.0f, cursor_offset.x - scroll_increment_x);
-                else if (cursor_offset.x - size.x >= edit_state.ScrollX)
-                    edit_state.ScrollX = (float)(int)(cursor_offset.x - size.x + scroll_increment_x);
-            }
-            else
-            {
-                edit_state.ScrollX = 0.0f;
-            }
-
-            // Vertical scroll
-            if (is_multiline)
-            {
-                float scroll_y = draw_window->Scroll.y;
-                if (cursor_offset.y - g.FontSize < scroll_y)
-                    scroll_y = ImMax(0.0f, cursor_offset.y - g.FontSize);
-                else if (cursor_offset.y - size.y >= scroll_y)
-                    scroll_y = cursor_offset.y - size.y;
-                draw_window->DC.CursorPos.y += (draw_window->Scroll.y - scroll_y);   // To avoid a frame of lag
-                draw_window->Scroll.y = scroll_y;
-                render_pos.y = draw_window->DC.CursorPos.y;
-            }
-        }
-        edit_state.CursorFollow = false;
-        const ImVec2 render_scroll = ImVec2(edit_state.ScrollX, 0.0f);
-
-        // Draw selection
-        if (edit_state.StbState.select_start != edit_state.StbState.select_end)
-        {
-            const ImWchar* text_selected_begin = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
-            const ImWchar* text_selected_end = text_begin + ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end);
-
-            float bg_offy_up = is_multiline ? 0.0f : -1.0f;    // FIXME: those offsets should be part of the style? they don't play so well with multi-line selection.
-            float bg_offy_dn = is_multiline ? 0.0f : 2.0f;
-            ImU32 bg_color = GetColorU32(ImGuiCol_TextSelectedBg);
-            ImVec2 rect_pos = render_pos + select_start_offset - render_scroll;
-            for (const ImWchar* p = text_selected_begin; p < text_selected_end; )
-            {
-                if (rect_pos.y > clip_rect.w + g.FontSize)
-                    break;
-                if (rect_pos.y < clip_rect.y)
-                {
-                    while (p < text_selected_end)
-                        if (*p++ == '\n')
-                            break;
-                }
-                else
-                {
-                    ImVec2 rect_size = InputTextCalcTextSizeW(p, text_selected_end, &p, NULL, true);
-                    if (rect_size.x <= 0.0f) rect_size.x = (float)(int)(g.Font->GetCharAdvance((unsigned short)' ') * 0.50f); // So we can see selected empty lines
-                    ImRect rect(rect_pos + ImVec2(0.0f, bg_offy_up - g.FontSize), rect_pos +ImVec2(rect_size.x, bg_offy_dn));
-                    rect.ClipWith(clip_rect);
-                    if (rect.Overlaps(clip_rect))
-                        draw_window->DrawList->AddRectFilled(rect.Min, rect.Max, bg_color);
-                }
-                rect_pos.x = render_pos.x - render_scroll.x;
-                rect_pos.y += g.FontSize;
-            }
-        }
-
-        const int buf_display_len = edit_state.CurLenA;
-        if (is_multiline || buf_display_len < buf_display_max_length)
-            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos - render_scroll, GetColorU32(ImGuiCol_Text), buf_display, buf_display + buf_display_len, 0.0f, is_multiline ? NULL : &clip_rect);
-
-        // Draw blinking cursor
-        bool cursor_is_visible = (!g.IO.ConfigCursorBlink) || (g.InputTextState.CursorAnim <= 0.0f) || ImFmod(g.InputTextState.CursorAnim, 1.20f) <= 0.80f;
-        ImVec2 cursor_screen_pos = render_pos + cursor_offset - render_scroll;
-        ImRect cursor_screen_rect(cursor_screen_pos.x, cursor_screen_pos.y-g.FontSize+0.5f, cursor_screen_pos.x+1.0f, cursor_screen_pos.y-1.5f);
-        if (cursor_is_visible && cursor_screen_rect.Overlaps(clip_rect))
-            draw_window->DrawList->AddLine(cursor_screen_rect.Min, cursor_screen_rect.GetBL(), GetColorU32(ImGuiCol_Text));
-
-        // Notify OS of text input position for advanced IME (-1 x offset so that Windows IME can cover our cursor. Bit of an extra nicety.)
-        if (is_editable)
-            g.PlatformImePos = ImVec2(cursor_screen_pos.x - 1, cursor_screen_pos.y - g.FontSize);
-    }
-    else
-    {
-        // Render text only
-        const char* buf_end = NULL;
-        if (is_multiline)
-            text_size = ImVec2(size.x, InputTextCalcTextLenAndLineCount(buf_display, &buf_end) * g.FontSize); // We don't need width
-        else
-            buf_end = buf_display + strlen(buf_display);
-        if (is_multiline || (buf_end - buf_display) < buf_display_max_length)
-            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos, GetColorU32(ImGuiCol_Text), buf_display, buf_end, 0.0f, is_multiline ? NULL : &clip_rect);
-    }
-
-    if (is_multiline)
-    {
-        Dummy(text_size + ImVec2(0.0f, g.FontSize)); // Always add room to scroll an extra line
-        EndChildFrame();
-        EndGroup();
-    }
-
-    if (is_password)
-        PopFont();
-
-    // Log as text
-    if (g.LogEnabled && !is_password)
-        LogRenderedText(&render_pos, buf_display, NULL);
-
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    if (value_changed)
-        MarkItemEdited(id);
-
-    if ((flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0)
-        return enter_pressed;
-    else
-        return value_changed;
-}
-
-bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    IM_ASSERT(!(flags & ImGuiInputTextFlags_Multiline)); // call InputTextMultiline()
-    return InputTextEx(label, buf, (int)buf_size, ImVec2(0,0), flags, callback, user_data);
-}
-
-bool ImGui::InputTextMultiline(const char* label, char* buf, size_t buf_size, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    return InputTextEx(label, buf, (int)buf_size, size, flags | ImGuiInputTextFlags_Multiline, callback, user_data);
-}
-
-// NB: format here must be a simple "%xx" format string with no prefix/suffix (unlike the Drag/Slider functions "format" argument)
-bool ImGui::InputScalar(const char* label, ImGuiDataType data_type, void* data_ptr, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-
-    char buf[64];
-    DataTypeFormatString(buf, IM_ARRAYSIZE(buf), data_type, data_ptr, format);
-
-    bool value_changed = false;
-    if ((extra_flags & (ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsScientific)) == 0)
-        extra_flags |= ImGuiInputTextFlags_CharsDecimal;
-    extra_flags |= ImGuiInputTextFlags_AutoSelectAll;
-
-    if (step != NULL)
-    {
-        const float button_size = GetFrameHeight();
-
-        BeginGroup(); // The only purpose of the group here is to allow the caller to query item data e.g. IsItemActive()
-        PushID(label);
-        PushItemWidth(ImMax(1.0f, CalcItemWidth() - (button_size + style.ItemInnerSpacing.x) * 2));
-        if (InputText("", buf, IM_ARRAYSIZE(buf), extra_flags)) // PushId(label) + "" gives us the expected ID from outside point of view
-            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
-        PopItemWidth();
-
-        // Step buttons
-        SameLine(0, style.ItemInnerSpacing.x);
-        if (ButtonEx("-", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
-        {
-            DataTypeApplyOp(data_type, '-', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
-            value_changed = true;
-        }
-        SameLine(0, style.ItemInnerSpacing.x);
-        if (ButtonEx("+", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
-        {
-            DataTypeApplyOp(data_type, '+', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
-            value_changed = true;
-        }
-        SameLine(0, style.ItemInnerSpacing.x);
-        TextUnformatted(label, FindRenderedTextEnd(label));
-
-        PopID();
-        EndGroup();
-    }
-    else
-    {
-        if (InputText(label, buf, IM_ARRAYSIZE(buf), extra_flags))
-            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
-    }
-
-    return value_changed;
-}
-
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    extra_flags |= ImGuiInputTextFlags_CharsScientific;
-    return InputScalar(label, ImGuiDataType_Float, (void*)v, (void*)(step>0.0f ? &step : NULL), (void*)(step_fast>0.0f ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputDouble(const char* label, double* v, double step, double step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    extra_flags |= ImGuiInputTextFlags_CharsScientific;
-    return InputScalar(label, ImGuiDataType_Double, (void*)v, (void*)(step>0.0 ? &step : NULL), (void*)(step_fast>0.0 ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputInt(const char* label, int* v, int step, int step_fast, ImGuiInputTextFlags extra_flags)
-{
-    // Hexadecimal input provided as a convenience but the flag name is awkward. Typically you'd use InputText() to parse your own data, if you want to handle prefixes.
-    const char* format = (extra_flags & ImGuiInputTextFlags_CharsHexadecimal) ? "%08X" : "%d";
-    return InputScalar(label, ImGuiDataType_S32, (void*)v, (void*)(step>0 ? &step : NULL), (void*)(step_fast>0 ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= InputScalar("##v", data_type, v, step, step_fast, format, extra_flags);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
-}
-
-// Prefer using "const char* format" directly, which is more flexible and consistent with other API.
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputFloat(label, v, step, step_fast, format, extra_flags);
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
-}
-#endif // IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-
-bool ImGui::InputInt2(const char* label, int v[2], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 2, NULL, NULL, "%d", extra_flags);
-}
-
-bool ImGui::InputInt3(const char* label, int v[3], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 3, NULL, NULL, "%d", extra_flags);
-}
-
-bool ImGui::InputInt4(const char* label, int v[4], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 4, NULL, NULL, "%d", extra_flags);
-}
-
-static float CalcMaxPopupHeightFromItemCount(int items_count)
-{
-    ImGuiContext& g = *GImGui;
-    if (items_count <= 0)
-        return FLT_MAX;
-    return (g.FontSize + g.Style.ItemSpacing.y) * items_count - g.Style.ItemSpacing.y + (g.Style.WindowPadding.y * 2);
-}
-
-bool ImGui::BeginCombo(const char* label, const char* preview_value, ImGuiComboFlags flags)
-{
-    // Always consume the SetNextWindowSizeConstraint() call in our early return paths
-    ImGuiContext& g = *GImGui;
-    ImGuiCond backup_next_window_size_constraint = g.NextWindowData.SizeConstraintCond;
-    g.NextWindowData.SizeConstraintCond = 0;
-
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    IM_ASSERT((flags & (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)) != (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)); // Can't use both flags together
-
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    const float arrow_size = (flags & ImGuiComboFlags_NoArrowButton) ? 0.0f : GetFrameHeight();
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const float w = (flags & ImGuiComboFlags_NoPreview) ? arrow_size : CalcItemWidth();
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, id, &frame_bb))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(frame_bb, id, &hovered, &held);
-    bool popup_open = IsPopupOpen(id);
-
-    const ImRect value_bb(frame_bb.Min, frame_bb.Max - ImVec2(arrow_size, 0.0f));
-    const ImU32 frame_col = GetColorU32(hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    if (!(flags & ImGuiComboFlags_NoPreview))
-        window->DrawList->AddRectFilled(frame_bb.Min, ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Max.y), frame_col, style.FrameRounding, ImDrawCornerFlags_Left);
-    if (!(flags & ImGuiComboFlags_NoArrowButton))
-    {
-        window->DrawList->AddRectFilled(ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Min.y), frame_bb.Max, GetColorU32((popup_open || hovered) ? ImGuiCol_ButtonHovered : ImGuiCol_Button), style.FrameRounding, (w <= arrow_size) ? ImDrawCornerFlags_All : ImDrawCornerFlags_Right);
-        RenderArrow(ImVec2(frame_bb.Max.x - arrow_size + style.FramePadding.y, frame_bb.Min.y + style.FramePadding.y), ImGuiDir_Down);
-    }
-    RenderFrameBorder(frame_bb.Min, frame_bb.Max, style.FrameRounding);
-    if (preview_value != NULL && !(flags & ImGuiComboFlags_NoPreview))
-        RenderTextClipped(frame_bb.Min + style.FramePadding, value_bb.Max, preview_value, NULL, NULL, ImVec2(0.0f,0.0f));
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    if ((pressed || g.NavActivateId == id) && !popup_open)
-    {
-        if (window->DC.NavLayerCurrent == 0)
-            window->NavLastIds[0] = id;
-        OpenPopupEx(id);
-        popup_open = true;
-    }
-
-    if (!popup_open)
-        return false;
-
-    if (backup_next_window_size_constraint)
-    {
-        g.NextWindowData.SizeConstraintCond = backup_next_window_size_constraint;
-        g.NextWindowData.SizeConstraintRect.Min.x = ImMax(g.NextWindowData.SizeConstraintRect.Min.x, w);
-    }
-    else
-    {
-        if ((flags & ImGuiComboFlags_HeightMask_) == 0)
-            flags |= ImGuiComboFlags_HeightRegular;
-        IM_ASSERT(ImIsPowerOfTwo(flags & ImGuiComboFlags_HeightMask_));    // Only one
-        int popup_max_height_in_items = -1;
-        if (flags & ImGuiComboFlags_HeightRegular)     popup_max_height_in_items = 8;
-        else if (flags & ImGuiComboFlags_HeightSmall)  popup_max_height_in_items = 4;
-        else if (flags & ImGuiComboFlags_HeightLarge)  popup_max_height_in_items = 20;
-        SetNextWindowSizeConstraints(ImVec2(w, 0.0f), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
-    }
-
-    char name[16];
-    ImFormatString(name, IM_ARRAYSIZE(name), "##Combo_%02d", g.CurrentPopupStack.Size); // Recycle windows based on depth
-
-    // Peak into expected window size so we can position it
-    if (ImGuiWindow* popup_window = FindWindowByName(name))
-        if (popup_window->WasActive)
-        {
-            ImVec2 size_expected = CalcWindowExpectedSize(popup_window);
-            if (flags & ImGuiComboFlags_PopupAlignLeft)
-                popup_window->AutoPosLastDirection = ImGuiDir_Left;
-            ImRect r_outer = GetWindowAllowedExtentRect(popup_window);
-            ImVec2 pos = FindBestWindowPosForPopupEx(frame_bb.GetBL(), size_expected, &popup_window->AutoPosLastDirection, r_outer, frame_bb, ImGuiPopupPositionPolicy_ComboBox);
-            SetNextWindowPos(pos);
-        }
-
-    // Horizontally align ourselves with the framed text
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_Popup | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoSavedSettings;
-    PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(style.FramePadding.x, style.WindowPadding.y));
-    bool ret = Begin(name, NULL, window_flags);
-    PopStyleVar();
-    if (!ret)
-    {
-        EndPopup();
-        IM_ASSERT(0);   // This should never happen as we tested for IsPopupOpen() above
-        return false;
-    }
-    return true;
-}
-
-void ImGui::EndCombo()
-{
-    EndPopup();
-}
-
-// Getter for the old Combo() API: const char*[]
-static bool Items_ArrayGetter(void* data, int idx, const char** out_text)
-{
-    const char* const* items = (const char* const*)data;
-    if (out_text)
-        *out_text = items[idx];
-    return true;
-}
-
-// Getter for the old Combo() API: "item1\0item2\0item3\0"
-static bool Items_SingleStringGetter(void* data, int idx, const char** out_text)
-{
-    // FIXME-OPT: we could pre-compute the indices to fasten this. But only 1 active combo means the waste is limited.
-    const char* items_separated_by_zeros = (const char*)data;
-    int items_count = 0;
-    const char* p = items_separated_by_zeros;
-    while (*p)
-    {
-        if (idx == items_count)
-            break;
-        p += strlen(p) + 1;
-        items_count++;
-    }
-    if (!*p)
-        return false;
-    if (out_text)
-        *out_text = p;
-    return true;
-}
-
-// Old API, prefer using BeginCombo() nowadays if you can.
-bool ImGui::Combo(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int popup_max_height_in_items)
-{
-    ImGuiContext& g = *GImGui;
-
-    // Call the getter to obtain the preview string which is a parameter to BeginCombo()
-    const char* preview_value = NULL;
-    if (*current_item >= 0 && *current_item < items_count)
-        items_getter(data, *current_item, &preview_value);
-
-    // The old Combo() API exposed "popup_max_height_in_items". The new more general BeginCombo() API doesn't have/need it, but we emulate it here.
-    if (popup_max_height_in_items != -1 && !g.NextWindowData.SizeConstraintCond)
-        SetNextWindowSizeConstraints(ImVec2(0,0), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
-
-    if (!BeginCombo(label, preview_value, ImGuiComboFlags_None))
-        return false;
-
-    // Display items
-    // FIXME-OPT: Use clipper (but we need to disable it on the appearing frame to make sure our call to SetItemDefaultFocus() is processed)
-    bool value_changed = false;
-    for (int i = 0; i < items_count; i++)
-    {
-        PushID((void*)(intptr_t)i);
-        const bool item_selected = (i == *current_item);
-        const char* item_text;
-        if (!items_getter(data, i, &item_text))
-            item_text = "*Unknown item*";
-        if (Selectable(item_text, item_selected))
-        {
-            value_changed = true;
-            *current_item = i;
-        }
-        if (item_selected)
-            SetItemDefaultFocus();
-        PopID();
-    }
-
-    EndCombo();
-    return value_changed;
-}
-
-// Combo box helper allowing to pass an array of strings.
-bool ImGui::Combo(const char* label, int* current_item, const char* const items[], int items_count, int height_in_items)
-{
-    const bool value_changed = Combo(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_in_items);
-    return value_changed;
-}
-
-// Combo box helper allowing to pass all items in a single string literal holding multiple zero-terminated items "item1\0item2\0" 
-bool ImGui::Combo(const char* label, int* current_item, const char* items_separated_by_zeros, int height_in_items)
-{
-    int items_count = 0;
-    const char* p = items_separated_by_zeros;       // FIXME-OPT: Avoid computing this, or at least only when combo is open
-    while (*p)
-    {
-        p += strlen(p) + 1;
-        items_count++;
-    }
-    bool value_changed = Combo(label, current_item, Items_SingleStringGetter, (void*)items_separated_by_zeros, items_count, height_in_items);
-    return value_changed;
-}
-
-// Tip: pass an empty label (e.g. "##dummy") then you can use the space to draw other text or image.
-// But you need to make sure the ID is unique, e.g. enclose calls in PushID/PopID or use ##unique_id.
-bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet) // FIXME-OPT: Avoid if vertically clipped.
-        PopClipRect();
-
-    ImGuiID id = window->GetID(label);
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-    ImVec2 size(size_arg.x != 0.0f ? size_arg.x : label_size.x, size_arg.y != 0.0f ? size_arg.y : label_size.y);
-    ImVec2 pos = window->DC.CursorPos;
-    pos.y += window->DC.CurrentLineTextBaseOffset;
-    ImRect bb_inner(pos, pos + size);
-    ItemSize(bb_inner);
-
-    // Fill horizontal space.
-    ImVec2 window_padding = window->WindowPadding;
-    float max_x = (flags & ImGuiSelectableFlags_SpanAllColumns) ? GetWindowContentRegionMax().x : GetContentRegionMax().x;
-    float w_draw = ImMax(label_size.x, window->Pos.x + max_x - window_padding.x - window->DC.CursorPos.x);
-    ImVec2 size_draw((size_arg.x != 0 && !(flags & ImGuiSelectableFlags_DrawFillAvailWidth)) ? size_arg.x : w_draw, size_arg.y != 0.0f ? size_arg.y : size.y);
-    ImRect bb(pos, pos + size_draw);
-    if (size_arg.x == 0.0f || (flags & ImGuiSelectableFlags_DrawFillAvailWidth))
-        bb.Max.x += window_padding.x;
-
-    // Selectables are tightly packed together, we extend the box to cover spacing between selectable.
-    float spacing_L = (float)(int)(style.ItemSpacing.x * 0.5f);
-    float spacing_U = (float)(int)(style.ItemSpacing.y * 0.5f);
-    float spacing_R = style.ItemSpacing.x - spacing_L;
-    float spacing_D = style.ItemSpacing.y - spacing_U;
-    bb.Min.x -= spacing_L;
-    bb.Min.y -= spacing_U;
-    bb.Max.x += spacing_R;
-    bb.Max.y += spacing_D;
-    if (!ItemAdd(bb, (flags & ImGuiSelectableFlags_Disabled) ? 0 : id))
-    {
-        if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
-            PushColumnClipRect();
-        return false;
-    }
-
-    // We use NoHoldingActiveID on menus so user can click and _hold_ on a menu then drag to browse child entries
-    ImGuiButtonFlags button_flags = 0;
-    if (flags & ImGuiSelectableFlags_NoHoldingActiveID) button_flags |= ImGuiButtonFlags_NoHoldingActiveID;
-    if (flags & ImGuiSelectableFlags_PressedOnClick) button_flags |= ImGuiButtonFlags_PressedOnClick;
-    if (flags & ImGuiSelectableFlags_PressedOnRelease) button_flags |= ImGuiButtonFlags_PressedOnRelease;
-    if (flags & ImGuiSelectableFlags_Disabled) button_flags |= ImGuiButtonFlags_Disabled;
-    if (flags & ImGuiSelectableFlags_AllowDoubleClick) button_flags |= ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnDoubleClick;
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, button_flags);
-    if (flags & ImGuiSelectableFlags_Disabled)
-        selected = false;
-
-    // Hovering selectable with mouse updates NavId accordingly so navigation can be resumed with gamepad/keyboard (this doesn't happen on most widgets)
-    if (pressed || hovered)
-        if (!g.NavDisableMouseHover && g.NavWindow == window && g.NavLayer == window->DC.NavLayerCurrent)
-        {
-            g.NavDisableHighlight = true;
-            SetNavID(id, window->DC.NavLayerCurrent);
-        }
-    if (pressed)
-        MarkItemEdited(id);
-
-    // Render
-    if (hovered || selected)
-    {
-        const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
-        RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
-        RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_TypeThin | ImGuiNavHighlightFlags_NoRounding);
-    }
-
-    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
-    {
-        PushColumnClipRect();
-        bb.Max.x -= (GetContentRegionMax().x - max_x);
-    }
-
-    if (flags & ImGuiSelectableFlags_Disabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-    RenderTextClipped(bb_inner.Min, bb.Max, label, NULL, &label_size, ImVec2(0.0f,0.0f));
-    if (flags & ImGuiSelectableFlags_Disabled) PopStyleColor();
-
-    // Automatically close popups
-    if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_DontClosePopups) && !(window->DC.ItemFlags & ImGuiItemFlags_SelectableDontClosePopup))
-        CloseCurrentPopup();
-    return pressed;
-}
-
-bool ImGui::Selectable(const char* label, bool* p_selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
-{
-    if (Selectable(label, *p_selected, flags, size_arg))
-    {
-        *p_selected = !*p_selected;
-        return true;
-    }
-    return false;
-}
-
-// FIXME: Rename to BeginListBox()
-// Helper to calculate the size of a listbox and display a label on the right.
-// Tip: To have a list filling the entire window width, PushItemWidth(-1) and pass an empty label "##empty"
-bool ImGui::ListBoxHeader(const char* label, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    const ImGuiStyle& style = GetStyle();
-    const ImGuiID id = GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
-    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), GetTextLineHeightWithSpacing() * 7.4f + style.ItemSpacing.y);
-    ImVec2 frame_size = ImVec2(size.x, ImMax(size.y, label_size.y));
-    ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + frame_size);
-    ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-    window->DC.LastItemRect = bb; // Forward storage for ListBoxFooter.. dodgy.
-
-    BeginGroup();
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    BeginChildFrame(id, frame_bb.GetSize());
-    return true;
-}
-
-// FIXME: Rename to BeginListBox()
-bool ImGui::ListBoxHeader(const char* label, int items_count, int height_in_items)
-{
-    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
-    // We don't add +0.40f if items_count <= height_in_items. It is slightly dodgy, because it means a dynamic list of items will make the widget resize occasionally when it crosses that size.
-    // I am expecting that someone will come and complain about this behavior in a remote future, then we can advise on a better solution.
-    if (height_in_items < 0)
-        height_in_items = ImMin(items_count, 7);
-    float height_in_items_f = height_in_items < items_count ? (height_in_items + 0.40f) : (height_in_items + 0.00f);
-
-    // We include ItemSpacing.y so that a list sized for the exact number of items doesn't make a scrollbar appears. We could also enforce that by passing a flag to BeginChild().
-    ImVec2 size;
-    size.x = 0.0f;
-    size.y = GetTextLineHeightWithSpacing() * height_in_items_f + GetStyle().ItemSpacing.y;
-    return ListBoxHeader(label, size);
-}
-
-// FIXME: Rename to EndListBox()
-void ImGui::ListBoxFooter()
-{
-    ImGuiWindow* parent_window = GetCurrentWindow()->ParentWindow;
-    const ImRect bb = parent_window->DC.LastItemRect;
-    const ImGuiStyle& style = GetStyle();
-
-    EndChildFrame();
-
-    // Redeclare item size so that it includes the label (we have stored the full size in LastItemRect)
-    // We call SameLine() to restore DC.CurrentLine* data
-    SameLine();
-    parent_window->DC.CursorPos = bb.Min;
-    ItemSize(bb, style.FramePadding.y);
-    EndGroup();
-}
-
-bool ImGui::ListBox(const char* label, int* current_item, const char* const items[], int items_count, int height_items)
-{
-    const bool value_changed = ListBox(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_items);
-    return value_changed;
-}
-
-bool ImGui::ListBox(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int height_in_items)
-{
-    if (!ListBoxHeader(label, items_count, height_in_items))
-        return false;
-
-    // Assume all items have even height (= 1 line of text). If you need items of different or variable sizes you can create a custom version of ListBox() in your code without using the clipper.
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    ImGuiListClipper clipper(items_count, GetTextLineHeightWithSpacing()); // We know exactly our line height here so we pass it as a minor optimization, but generally you don't need to.
-    while (clipper.Step())
-        for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++)
-        {
-            const bool item_selected = (i == *current_item);
-            const char* item_text;
-            if (!items_getter(data, i, &item_text))
-                item_text = "*Unknown item*";
-
-            PushID(i);
-            if (Selectable(item_text, item_selected))
-            {
-                *current_item = i;
-                value_changed = true;
-            }
-            if (item_selected)
-                SetItemDefaultFocus();
-            PopID();
-        }
-    ListBoxFooter();
-    if (value_changed)
-        MarkItemEdited(g.CurrentWindow->DC.LastItemId);
-
-    return value_changed;
-}
-
-bool ImGui::MenuItem(const char* label, const char* shortcut, bool selected, bool enabled)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    ImGuiStyle& style = g.Style;
-    ImVec2 pos = window->DC.CursorPos;
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    ImGuiSelectableFlags flags = ImGuiSelectableFlags_PressedOnRelease | (enabled ? 0 : ImGuiSelectableFlags_Disabled);
-    bool pressed;
-    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
-    {
-        // Mimic the exact layout spacing of BeginMenu() to allow MenuItem() inside a menu bar, which is a little misleading but may be useful
-        // Note that in this situation we render neither the shortcut neither the selected tick mark
-        float w = label_size.x;
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
-        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
-        pressed = Selectable(label, false, flags, ImVec2(w, 0.0f));
-        PopStyleVar();
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
-    }
-    else
-    {
-        ImVec2 shortcut_size = shortcut ? CalcTextSize(shortcut, NULL) : ImVec2(0.0f, 0.0f);
-        float w = window->MenuColumns.DeclColumns(label_size.x, shortcut_size.x, (float)(int)(g.FontSize * 1.20f)); // Feedback for next frame
-        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
-        pressed = Selectable(label, false, flags | ImGuiSelectableFlags_DrawFillAvailWidth, ImVec2(w, 0.0f));
-        if (shortcut_size.x > 0.0f)
-        {
-            PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-            RenderText(pos + ImVec2(window->MenuColumns.Pos[1] + extra_w, 0.0f), shortcut, NULL, false);
-            PopStyleColor();
-        }
-        if (selected)
-            RenderCheckMark(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.40f, g.FontSize * 0.134f * 0.5f), GetColorU32(enabled ? ImGuiCol_Text : ImGuiCol_TextDisabled), g.FontSize  * 0.866f);
-    }
-    return pressed;
-}
-
-bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected, bool enabled)
-{
-    if (MenuItem(label, shortcut, p_selected ? *p_selected : false, enabled))
-    {
-        if (p_selected)
-            *p_selected = !*p_selected;
-        return true;
-    }
-    return false;
-}
-
-// For the main menu bar, which cannot be moved, we honor g.Style.DisplaySafeAreaPadding to ensure text can be visible on a TV set.
-bool ImGui::BeginMainMenuBar()
-{
-    ImGuiContext& g = *GImGui;
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(g.Style.DisplaySafeAreaPadding.x, ImMax(g.Style.DisplaySafeAreaPadding.y - g.Style.FramePadding.y, 0.0f));
-    SetNextWindowPos(ImVec2(0.0f, 0.0f));
-    SetNextWindowSize(ImVec2(g.IO.DisplaySize.x, g.NextWindowData.MenuBarOffsetMinVal.y + g.FontBaseSize + g.Style.FramePadding.y));
-    PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
-    PushStyleVar(ImGuiStyleVar_WindowMinSize, ImVec2(0,0));
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_MenuBar;
-    bool is_open = Begin("##MainMenuBar", NULL, window_flags) && BeginMenuBar();
-    PopStyleVar(2);
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(0.0f, 0.0f);
-    if (!is_open)
-    {
-        End();
-        return false;
-    }
-    return true;
-}
-
-void ImGui::EndMainMenuBar()
-{
-    EndMenuBar();
-
-    // When the user has left the menu layer (typically: closed menus through activation of an item), we restore focus to the previous window
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow == g.NavWindow && g.NavLayer == 0)
-        FocusFrontMostActiveWindowIgnoringOne(g.NavWindow);
-
-    End();
-}
-
-bool ImGui::BeginMenuBar()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-    if (!(window->Flags & ImGuiWindowFlags_MenuBar))
-        return false;
-
-    IM_ASSERT(!window->DC.MenuBarAppending);
-    BeginGroup(); // Backup position on layer 0
-    PushID("##menubar");
-
-    // We don't clip with current window clipping rectangle as it is already set to the area below. However we clip with window full rect.
-    // We remove 1 worth of rounding to Max.x to that text in long menus and small windows don't tend to display over the lower-right rounded area, which looks particularly glitchy.
-    ImRect bar_rect = window->MenuBarRect();
-    ImRect clip_rect(ImFloor(bar_rect.Min.x + 0.5f), ImFloor(bar_rect.Min.y + window->WindowBorderSize + 0.5f), ImFloor(ImMax(bar_rect.Min.x, bar_rect.Max.x - window->WindowRounding) + 0.5f), ImFloor(bar_rect.Max.y + 0.5f));
-    clip_rect.ClipWith(window->OuterRectClipped);
-    PushClipRect(clip_rect.Min, clip_rect.Max, false);
-
-    window->DC.CursorPos = ImVec2(bar_rect.Min.x + window->DC.MenuBarOffset.x, bar_rect.Min.y + window->DC.MenuBarOffset.y);
-    window->DC.LayoutType = ImGuiLayoutType_Horizontal;
-    window->DC.NavLayerCurrent++;
-    window->DC.NavLayerCurrentMask <<= 1;
-    window->DC.MenuBarAppending = true;
-    AlignTextToFramePadding();
-    return true;
-}
-
-void ImGui::EndMenuBar()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-    ImGuiContext& g = *GImGui;
-
-    // Nav: When a move request within one of our child menu failed, capture the request to navigate among our siblings.
-    if (NavMoveRequestButNoResultYet() && (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right) && (g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
-    {
-        ImGuiWindow* nav_earliest_child = g.NavWindow;
-        while (nav_earliest_child->ParentWindow && (nav_earliest_child->ParentWindow->Flags & ImGuiWindowFlags_ChildMenu))
-            nav_earliest_child = nav_earliest_child->ParentWindow;
-        if (nav_earliest_child->ParentWindow == window && nav_earliest_child->DC.ParentLayoutType == ImGuiLayoutType_Horizontal && g.NavMoveRequestForward == ImGuiNavForward_None)
-        {
-            // To do so we claim focus back, restore NavId and then process the movement request for yet another frame.
-            // This involve a one-frame delay which isn't very problematic in this situation. We could remove it by scoring in advance for multiple window (probably not worth the hassle/cost)
-            IM_ASSERT(window->DC.NavLayerActiveMaskNext & 0x02); // Sanity check
-            FocusWindow(window);
-            SetNavIDWithRectRel(window->NavLastIds[1], 1, window->NavRectRel[1]);
-            g.NavLayer = 1;
-            g.NavDisableHighlight = true; // Hide highlight for the current frame so we don't see the intermediary selection.
-            g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
-            NavMoveRequestCancel();
-        }
-    }
-
-    IM_ASSERT(window->Flags & ImGuiWindowFlags_MenuBar);
-    IM_ASSERT(window->DC.MenuBarAppending);
-    PopClipRect();
-    PopID();
-    window->DC.MenuBarOffset.x = window->DC.CursorPos.x - window->MenuBarRect().Min.x; // Save horizontal position so next append can reuse it. This is kinda equivalent to a per-layer CursorPos.
-    window->DC.GroupStack.back().AdvanceCursor = false;
-    EndGroup(); // Restore position on layer 0
-    window->DC.LayoutType = ImGuiLayoutType_Vertical;
-    window->DC.NavLayerCurrent--;
-    window->DC.NavLayerCurrentMask >>= 1;
-    window->DC.MenuBarAppending = false;
-}
-
-bool ImGui::BeginMenu(const char* label, bool enabled)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    bool pressed;
-    bool menu_is_open = IsPopupOpen(id);
-    bool menuset_is_open = !(window->Flags & ImGuiWindowFlags_Popup) && (g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].OpenParentId == window->IDStack.back());
-    ImGuiWindow* backed_nav_window = g.NavWindow;
-    if (menuset_is_open)
-        g.NavWindow = window;  // Odd hack to allow hovering across menus of a same menu-set (otherwise we wouldn't be able to hover parent)
-
-    // The reference position stored in popup_pos will be used by Begin() to find a suitable position for the child menu (using FindBestWindowPosForPopup).
-    ImVec2 popup_pos, pos = window->DC.CursorPos;
-    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
-    {
-        // Menu inside an horizontal menu bar
-        // Selectable extend their highlight by half ItemSpacing in each direction.
-        // For ChildMenu, the popup position will be overwritten by the call to FindBestWindowPosForPopup() in Begin()
-        popup_pos = ImVec2(pos.x - window->WindowPadding.x, pos.y - style.FramePadding.y + window->MenuBarHeight());
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
-        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
-        float w = label_size.x;
-        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
-        PopStyleVar();
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
-    }
-    else
-    {
-        // Menu inside a menu
-        popup_pos = ImVec2(pos.x, pos.y - style.WindowPadding.y);
-        float w = window->MenuColumns.DeclColumns(label_size.x, 0.0f, (float)(int)(g.FontSize * 1.20f)); // Feedback to next frame
-        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
-        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | ImGuiSelectableFlags_DrawFillAvailWidth | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
-        if (!enabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-        RenderArrow(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.30f, 0.0f), ImGuiDir_Right);
-        if (!enabled) PopStyleColor();
-    }
-
-    const bool hovered = enabled && ItemHoverable(window->DC.LastItemRect, id);
-    if (menuset_is_open)
-        g.NavWindow = backed_nav_window;
-
-    bool want_open = false, want_close = false;
-    if (window->DC.LayoutType == ImGuiLayoutType_Vertical) // (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
-    {
-        // Implement http://bjk5.com/post/44698559168/breaking-down-amazons-mega-dropdown to avoid using timers, so menus feels more reactive.
-        bool moving_within_opened_triangle = false;
-        if (g.HoveredWindow == window && g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].ParentWindow == window && !(window->Flags & ImGuiWindowFlags_MenuBar))
-        {
-            if (ImGuiWindow* next_window = g.OpenPopupStack[g.CurrentPopupStack.Size].Window)
-            {
-                ImRect next_window_rect = next_window->Rect();
-                ImVec2 ta = g.IO.MousePos - g.IO.MouseDelta;
-                ImVec2 tb = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetTL() : next_window_rect.GetTR();
-                ImVec2 tc = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetBL() : next_window_rect.GetBR();
-                float extra = ImClamp(ImFabs(ta.x - tb.x) * 0.30f, 5.0f, 30.0f); // add a bit of extra slack.
-                ta.x += (window->Pos.x < next_window->Pos.x) ? -0.5f : +0.5f;   // to avoid numerical issues
-                tb.y = ta.y + ImMax((tb.y - extra) - ta.y, -100.0f);            // triangle is maximum 200 high to limit the slope and the bias toward large sub-menus // FIXME: Multiply by fb_scale?
-                tc.y = ta.y + ImMin((tc.y + extra) - ta.y, +100.0f);
-                moving_within_opened_triangle = ImTriangleContainsPoint(ta, tb, tc, g.IO.MousePos);
-                //window->DrawList->PushClipRectFullScreen(); window->DrawList->AddTriangleFilled(ta, tb, tc, moving_within_opened_triangle ? IM_COL32(0,128,0,128) : IM_COL32(128,0,0,128)); window->DrawList->PopClipRect(); // Debug
-            }
-        }
-
-        want_close = (menu_is_open && !hovered && g.HoveredWindow == window && g.HoveredIdPreviousFrame != 0 && g.HoveredIdPreviousFrame != id && !moving_within_opened_triangle);
-        want_open = (!menu_is_open && hovered && !moving_within_opened_triangle) || (!menu_is_open && hovered && pressed);
-
-        if (g.NavActivateId == id)
-        {
-            want_close = menu_is_open;
-            want_open = !menu_is_open;
-        }
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right) // Nav-Right to open
-        {
-            want_open = true;
-            NavMoveRequestCancel();
-        }
-    }
-    else
-    {
-        // Menu bar
-        if (menu_is_open && pressed && menuset_is_open) // Click an open menu again to close it
-        {
-            want_close = true;
-            want_open = menu_is_open = false;
-        }
-        else if (pressed || (hovered && menuset_is_open && !menu_is_open)) // First click to open, then hover to open others
-        {
-            want_open = true;
-        }
-        else if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Down) // Nav-Down to open
-        {
-            want_open = true;
-            NavMoveRequestCancel();
-        }
-    }
-
-    if (!enabled) // explicitly close if an open menu becomes disabled, facilitate users code a lot in pattern such as 'if (BeginMenu("options", has_object)) { ..use object.. }'
-        want_close = true;
-    if (want_close && IsPopupOpen(id))
-        ClosePopupToLevel(g.CurrentPopupStack.Size);
-
-    if (!menu_is_open && want_open && g.OpenPopupStack.Size > g.CurrentPopupStack.Size)
-    {
-        // Don't recycle same menu level in the same frame, first close the other menu and yield for a frame.
-        OpenPopup(label);
-        return false;
-    }
-
-    menu_is_open |= want_open;
-    if (want_open)
-        OpenPopup(label);
-
-    if (menu_is_open)
-    {
-        // Sub-menus are ChildWindow so that mouse can be hovering across them (otherwise top-most popup menu would steal focus and not allow hovering on parent menu)
-        SetNextWindowPos(popup_pos, ImGuiCond_Always);
-        ImGuiWindowFlags flags = ImGuiWindowFlags_ChildMenu | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoNavFocus;
-        if (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
-            flags |= ImGuiWindowFlags_ChildWindow;
-        menu_is_open = BeginPopupEx(id, flags); // menu_is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-    }
-
-    return menu_is_open;
-}
-
-void ImGui::EndMenu()
-{
-    // Nav: When a left move request _within our child menu_ failed, close the menu.
-    // A menu doesn't close itself because EndMenuBar() wants the catch the last Left<>Right inputs.
-    // However, it means that with the current code, a BeginMenu() from outside another menu or a menu-bar won't be closable with the Left direction.
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    if (g.NavWindow && g.NavWindow->ParentWindow == window && g.NavMoveDir == ImGuiDir_Left && NavMoveRequestButNoResultYet() && window->DC.LayoutType == ImGuiLayoutType_Vertical)
-    {
-        ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-        NavMoveRequestCancel();
-    }
-
-    EndPopup();
-}
-
-// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-void ImGui::ColorTooltip(const char* text, const float* col, ImGuiColorEditFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-
-    int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
-    BeginTooltipEx(0, true);
-
-    const char* text_end = text ? FindRenderedTextEnd(text, NULL) : text;
-    if (text_end > text)
-    {
-        TextUnformatted(text, text_end);
-        Separator();
-    }
-
-    ImVec2 sz(g.FontSize * 3 + g.Style.FramePadding.y * 2, g.FontSize * 3 + g.Style.FramePadding.y * 2);
-    ColorButton("##preview", ImVec4(col[0], col[1], col[2], col[3]), (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf)) | ImGuiColorEditFlags_NoTooltip, sz);
-    SameLine();
-    if (flags & ImGuiColorEditFlags_NoAlpha)
-        Text("#%02X%02X%02X\nR: %d, G: %d, B: %d\n(%.3f, %.3f, %.3f)", cr, cg, cb, cr, cg, cb, col[0], col[1], col[2]);
-    else
-        Text("#%02X%02X%02X%02X\nR:%d, G:%d, B:%d, A:%d\n(%.3f, %.3f, %.3f, %.3f)", cr, cg, cb, ca, cr, cg, cb, ca, col[0], col[1], col[2], col[3]);
-    EndTooltip();
-}
-
-static inline ImU32 ImAlphaBlendColor(ImU32 col_a, ImU32 col_b)
-{
-    float t = ((col_b >> IM_COL32_A_SHIFT) & 0xFF) / 255.f;
-    int r = ImLerp((int)(col_a >> IM_COL32_R_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_R_SHIFT) & 0xFF, t);
-    int g = ImLerp((int)(col_a >> IM_COL32_G_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_G_SHIFT) & 0xFF, t);
-    int b = ImLerp((int)(col_a >> IM_COL32_B_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_B_SHIFT) & 0xFF, t);
-    return IM_COL32(r, g, b, 0xFF);
-}
-
-// NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Caller currently responsible for avoiding that.
-// I spent a non reasonable amount of time trying to getting this right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and offsets, and eventually gave up... probably more reasonable to disable rounding alltogether.
-void ImGui::RenderColorRectWithAlphaCheckerboard(ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, int rounding_corners_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF)
-    {
-        ImU32 col_bg1 = GetColorU32(ImAlphaBlendColor(IM_COL32(204,204,204,255), col));
-        ImU32 col_bg2 = GetColorU32(ImAlphaBlendColor(IM_COL32(128,128,128,255), col));
-        window->DrawList->AddRectFilled(p_min, p_max, col_bg1, rounding, rounding_corners_flags);
-
-        int yi = 0;
-        for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++)
-        {
-            float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y);
-            if (y2 <= y1)
-                continue;
-            for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f)
-            {
-                float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x);
-                if (x2 <= x1)
-                    continue;
-                int rounding_corners_flags_cell = 0;
-                if (y1 <= p_min.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopRight; }
-                if (y2 >= p_max.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotRight; }
-                rounding_corners_flags_cell &= rounding_corners_flags;
-                window->DrawList->AddRectFilled(ImVec2(x1,y1), ImVec2(x2,y2), col_bg2, rounding_corners_flags_cell ? rounding : 0.0f, rounding_corners_flags_cell);
-            }
-        }
-    }
-    else
-    {
-        window->DrawList->AddRectFilled(p_min, p_max, col, rounding, rounding_corners_flags);
-    }
-}
-
-void ImGui::SetColorEditOptions(ImGuiColorEditFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    if ((flags & ImGuiColorEditFlags__InputsMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__InputsMask;
-    if ((flags & ImGuiColorEditFlags__DataTypeMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__DataTypeMask;
-    if ((flags & ImGuiColorEditFlags__PickerMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__PickerMask;
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__InputsMask)));   // Check only 1 option is selected
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__DataTypeMask))); // Check only 1 option is selected
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask)));   // Check only 1 option is selected
-    g.ColorEditOptions = flags;
-}
-
-// A little colored square. Return true when clicked.
-// FIXME: May want to display/ignore the alpha component in the color display? Yet show it in the tooltip.
-// 'desc_id' is not called 'label' because we don't display it next to the button, but only in the tooltip.
-bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFlags flags, ImVec2 size)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiID id = window->GetID(desc_id);
-    float default_size = GetFrameHeight();
-    if (size.x == 0.0f)
-        size.x = default_size;
-    if (size.y == 0.0f)
-        size.y = default_size;
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    if (flags & ImGuiColorEditFlags_NoAlpha)
-        flags &= ~(ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf);
-
-    ImVec4 col_without_alpha(col.x, col.y, col.z, 1.0f);
-    float grid_step = ImMin(size.x, size.y) / 2.99f;
-    float rounding = ImMin(g.Style.FrameRounding, grid_step * 0.5f);
-    ImRect bb_inner = bb;
-    float off = -0.75f; // The border (using Col_FrameBg) tends to look off when color is near-opaque and rounding is enabled. This offset seemed like a good middle ground to reduce those artifacts.
-    bb_inner.Expand(off);
-    if ((flags & ImGuiColorEditFlags_AlphaPreviewHalf) && col.w < 1.0f)
-    {
-        float mid_x = (float)(int)((bb_inner.Min.x + bb_inner.Max.x) * 0.5f + 0.5f);
-        RenderColorRectWithAlphaCheckerboard(ImVec2(bb_inner.Min.x + grid_step, bb_inner.Min.y), bb_inner.Max, GetColorU32(col), grid_step, ImVec2(-grid_step + off, off), rounding, ImDrawCornerFlags_TopRight| ImDrawCornerFlags_BotRight);
-        window->DrawList->AddRectFilled(bb_inner.Min, ImVec2(mid_x, bb_inner.Max.y), GetColorU32(col_without_alpha), rounding, ImDrawCornerFlags_TopLeft|ImDrawCornerFlags_BotLeft);
-    }
-    else
-    {
-        // Because GetColorU32() multiplies by the global style Alpha and we don't want to display a checkerboard if the source code had no alpha
-        ImVec4 col_source = (flags & ImGuiColorEditFlags_AlphaPreview) ? col : col_without_alpha;
-        if (col_source.w < 1.0f)
-            RenderColorRectWithAlphaCheckerboard(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), grid_step, ImVec2(off, off), rounding);
-        else
-            window->DrawList->AddRectFilled(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), rounding, ImDrawCornerFlags_All);
-    }
-    RenderNavHighlight(bb, id);
-    if (g.Style.FrameBorderSize > 0.0f)
-        RenderFrameBorder(bb.Min, bb.Max, rounding);
-    else
-        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), rounding); // Color button are often in need of some sort of border
-
-    // Drag and Drop Source
-    // NB: The ActiveId test is merely an optional micro-optimization, BeginDragDropSource() does the same test.
-    if (g.ActiveId == id && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropSource())
-    {
-        if (flags & ImGuiColorEditFlags_NoAlpha)
-            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F, &col, sizeof(float) * 3, ImGuiCond_Once);
-        else
-            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F, &col, sizeof(float) * 4, ImGuiCond_Once);
-        ColorButton(desc_id, col, flags);
-        SameLine();
-        TextUnformatted("Color");
-        EndDragDropSource();
-    }
-
-    // Tooltip
-    if (!(flags & ImGuiColorEditFlags_NoTooltip) && hovered)
-        ColorTooltip(desc_id, &col.x, flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf));
-
-    if (pressed)
-        MarkItemEdited(id);
-
-    return pressed;
-}
-
-bool ImGui::ColorEdit3(const char* label, float col[3], ImGuiColorEditFlags flags)
-{
-    return ColorEdit4(label, col, flags | ImGuiColorEditFlags_NoAlpha);
-}
-
-void ImGui::ColorEditOptionsPopup(const float* col, ImGuiColorEditFlags flags)
-{
-    bool allow_opt_inputs = !(flags & ImGuiColorEditFlags__InputsMask);
-    bool allow_opt_datatype = !(flags & ImGuiColorEditFlags__DataTypeMask);
-    if ((!allow_opt_inputs && !allow_opt_datatype) || !BeginPopup("context"))
-        return;
-    ImGuiContext& g = *GImGui;
-    ImGuiColorEditFlags opts = g.ColorEditOptions;
-    if (allow_opt_inputs)
-    {
-        if (RadioButton("RGB", (opts & ImGuiColorEditFlags_RGB) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_RGB;
-        if (RadioButton("HSV", (opts & ImGuiColorEditFlags_HSV) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HSV;
-        if (RadioButton("HEX", (opts & ImGuiColorEditFlags_HEX) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HEX;
-    }
-    if (allow_opt_datatype)
-    {
-        if (allow_opt_inputs) Separator();
-        if (RadioButton("0..255",     (opts & ImGuiColorEditFlags_Uint8) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Uint8;
-        if (RadioButton("0.00..1.00", (opts & ImGuiColorEditFlags_Float) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Float;
-    }
-
-    if (allow_opt_inputs || allow_opt_datatype)
-        Separator();
-    if (Button("Copy as..", ImVec2(-1,0)))
-        OpenPopup("Copy");
-    if (BeginPopup("Copy"))
-    {
-        int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
-        char buf[64];
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%.3ff, %.3ff, %.3ff, %.3ff)", col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%d,%d,%d,%d)", cr, cg, cb, ca);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        if (flags & ImGuiColorEditFlags_NoAlpha)
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X", cr, cg, cb);
-        else
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X%02X", cr, cg, cb, ca);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        EndPopup();
-    }
-
-    g.ColorEditOptions = opts;
-    EndPopup();
-}
-
-void ImGui::ColorPickerOptionsPopup(const float* ref_col, ImGuiColorEditFlags flags)
-{
-    bool allow_opt_picker = !(flags & ImGuiColorEditFlags__PickerMask);
-    bool allow_opt_alpha_bar = !(flags & ImGuiColorEditFlags_NoAlpha) && !(flags & ImGuiColorEditFlags_AlphaBar);
-    if ((!allow_opt_picker && !allow_opt_alpha_bar) || !ImGui::BeginPopup("context"))
-        return;
-    ImGuiContext& g = *GImGui;
-    if (allow_opt_picker)
-    {
-        ImVec2 picker_size(g.FontSize * 8, ImMax(g.FontSize * 8 - (ImGui::GetFrameHeight() + g.Style.ItemInnerSpacing.x), 1.0f)); // FIXME: Picker size copied from main picker function
-        ImGui::PushItemWidth(picker_size.x);
-        for (int picker_type = 0; picker_type < 2; picker_type++)
-        {
-            // Draw small/thumbnail version of each picker type (over an invisible button for selection)
-            if (picker_type > 0) ImGui::Separator();
-            ImGui::PushID(picker_type);
-            ImGuiColorEditFlags picker_flags = ImGuiColorEditFlags_NoInputs|ImGuiColorEditFlags_NoOptions|ImGuiColorEditFlags_NoLabel|ImGuiColorEditFlags_NoSidePreview|(flags & ImGuiColorEditFlags_NoAlpha);
-            if (picker_type == 0) picker_flags |= ImGuiColorEditFlags_PickerHueBar;
-            if (picker_type == 1) picker_flags |= ImGuiColorEditFlags_PickerHueWheel;
-            ImVec2 backup_pos = ImGui::GetCursorScreenPos();
-            if (ImGui::Selectable("##selectable", false, 0, picker_size)) // By default, Selectable() is closing popup
-                g.ColorEditOptions = (g.ColorEditOptions & ~ImGuiColorEditFlags__PickerMask) | (picker_flags & ImGuiColorEditFlags__PickerMask);
-            ImGui::SetCursorScreenPos(backup_pos);
-            ImVec4 dummy_ref_col;
-            memcpy(&dummy_ref_col.x, ref_col, sizeof(float) * (picker_flags & ImGuiColorEditFlags_NoAlpha ? 3 : 4));
-            ImGui::ColorPicker4("##dummypicker", &dummy_ref_col.x, picker_flags);
-            ImGui::PopID();
-        }
-        ImGui::PopItemWidth();
-    }
-    if (allow_opt_alpha_bar)
-    {
-        if (allow_opt_picker) ImGui::Separator();
-        ImGui::CheckboxFlags("Alpha Bar", (unsigned int*)&g.ColorEditOptions, ImGuiColorEditFlags_AlphaBar);
-    }
-    ImGui::EndPopup();
-}
-
-// Edit colors components (each component in 0.0f..1.0f range).
-// See enum ImGuiColorEditFlags_ for available options. e.g. Only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-// With typical options: Left-click on colored square to open color picker. Right-click to open option menu. CTRL-Click over input fields to edit them and TAB to go to next item.
-bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float square_sz = GetFrameHeight();
-    const float w_extra = (flags & ImGuiColorEditFlags_NoSmallPreview) ? 0.0f : (square_sz + style.ItemInnerSpacing.x);
-    const float w_items_all = CalcItemWidth() - w_extra;
-    const char* label_display_end = FindRenderedTextEnd(label);
-
-    BeginGroup();
-    PushID(label);
-
-    // If we're not showing any slider there's no point in doing any HSV conversions
-    const ImGuiColorEditFlags flags_untouched = flags;
-    if (flags & ImGuiColorEditFlags_NoInputs)
-        flags = (flags & (~ImGuiColorEditFlags__InputsMask)) | ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_NoOptions;
-
-    // Context menu: display and modify options (before defaults are applied)
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-        ColorEditOptionsPopup(col, flags);
-
-    // Read stored options
-    if (!(flags & ImGuiColorEditFlags__InputsMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__InputsMask);
-    if (!(flags & ImGuiColorEditFlags__DataTypeMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__DataTypeMask);
-    if (!(flags & ImGuiColorEditFlags__PickerMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__PickerMask);
-    flags |= (g.ColorEditOptions & ~(ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask));
-
-    const bool alpha = (flags & ImGuiColorEditFlags_NoAlpha) == 0;
-    const bool hdr = (flags & ImGuiColorEditFlags_HDR) != 0;
-    const int components = alpha ? 4 : 3;
-
-    // Convert to the formats we need
-    float f[4] = { col[0], col[1], col[2], alpha ? col[3] : 1.0f };
-    if (flags & ImGuiColorEditFlags_HSV)
-        ColorConvertRGBtoHSV(f[0], f[1], f[2], f[0], f[1], f[2]);
-    int i[4] = { IM_F32_TO_INT8_UNBOUND(f[0]), IM_F32_TO_INT8_UNBOUND(f[1]), IM_F32_TO_INT8_UNBOUND(f[2]), IM_F32_TO_INT8_UNBOUND(f[3]) };
-
-    bool value_changed = false;
-    bool value_changed_as_float = false;
-
-    if ((flags & (ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_HSV)) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        // RGB/HSV 0..255 Sliders
-        const float w_item_one  = ImMax(1.0f, (float)(int)((w_items_all - (style.ItemInnerSpacing.x) * (components-1)) / (float)components));
-        const float w_item_last = ImMax(1.0f, (float)(int)(w_items_all - (w_item_one + style.ItemInnerSpacing.x) * (components-1)));
-
-        const bool hide_prefix = (w_item_one <= CalcTextSize((flags & ImGuiColorEditFlags_Float) ? "M:0.000" : "M:000").x);
-        const char* ids[4] = { "##X", "##Y", "##Z", "##W" };
-        const char* fmt_table_int[3][4] =
-        {
-            {   "%3d",   "%3d",   "%3d",   "%3d" }, // Short display
-            { "R:%3d", "G:%3d", "B:%3d", "A:%3d" }, // Long display for RGBA
-            { "H:%3d", "S:%3d", "V:%3d", "A:%3d" }  // Long display for HSVA
-        };
-        const char* fmt_table_float[3][4] =
-        {
-            {   "%0.3f",   "%0.3f",   "%0.3f",   "%0.3f" }, // Short display
-            { "R:%0.3f", "G:%0.3f", "B:%0.3f", "A:%0.3f" }, // Long display for RGBA
-            { "H:%0.3f", "S:%0.3f", "V:%0.3f", "A:%0.3f" }  // Long display for HSVA
-        };
-        const int fmt_idx = hide_prefix ? 0 : (flags & ImGuiColorEditFlags_HSV) ? 2 : 1;
-
-        PushItemWidth(w_item_one);
-        for (int n = 0; n < components; n++)
-        {
-            if (n > 0)
-                SameLine(0, style.ItemInnerSpacing.x);
-            if (n + 1 == components)
-                PushItemWidth(w_item_last);
-            if (flags & ImGuiColorEditFlags_Float)
-                value_changed = value_changed_as_float = value_changed | DragFloat(ids[n], &f[n], 1.0f/255.0f, 0.0f, hdr ? 0.0f : 1.0f, fmt_table_float[fmt_idx][n]);
-            else
-                value_changed |= DragInt(ids[n], &i[n], 1.0f, 0, hdr ? 0 : 255, fmt_table_int[fmt_idx][n]);
-            if (!(flags & ImGuiColorEditFlags_NoOptions))
-                OpenPopupOnItemClick("context");
-        }
-        PopItemWidth();
-        PopItemWidth();
-    }
-    else if ((flags & ImGuiColorEditFlags_HEX) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        // RGB Hexadecimal Input
-        char buf[64];
-        if (alpha)
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255), ImClamp(i[3],0,255));
-        else
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255));
-        PushItemWidth(w_items_all);
-        if (InputText("##Text", buf, IM_ARRAYSIZE(buf), ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase))
-        {
-            value_changed = true;
-            char* p = buf;
-            while (*p == '#' || ImCharIsBlankA(*p))
-                p++;
-            i[0] = i[1] = i[2] = i[3] = 0;
-            if (alpha)
-                sscanf(p, "%02X%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2], (unsigned int*)&i[3]); // Treat at unsigned (%X is unsigned)
-            else
-                sscanf(p, "%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2]);
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-        PopItemWidth();
-    }
-
-    ImGuiWindow* picker_active_window = NULL;
-    if (!(flags & ImGuiColorEditFlags_NoSmallPreview))
-    {
-        if (!(flags & ImGuiColorEditFlags_NoInputs))
-            SameLine(0, style.ItemInnerSpacing.x);
-
-        const ImVec4 col_v4(col[0], col[1], col[2], alpha ? col[3] : 1.0f);
-        if (ColorButton("##ColorButton", col_v4, flags))
-        {
-            if (!(flags & ImGuiColorEditFlags_NoPicker))
-            {
-                // Store current color and open a picker
-                g.ColorPickerRef = col_v4;
-                OpenPopup("picker");
-                SetNextWindowPos(window->DC.LastItemRect.GetBL() + ImVec2(-1,style.ItemSpacing.y));
-            }
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-
-        if (BeginPopup("picker"))
-        {
-            picker_active_window = g.CurrentWindow;
-            if (label != label_display_end)
-            {
-                TextUnformatted(label, label_display_end);
-                Separator();
-            }
-            ImGuiColorEditFlags picker_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaBar;
-            ImGuiColorEditFlags picker_flags = (flags_untouched & picker_flags_to_forward) | ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags_NoLabel | ImGuiColorEditFlags_AlphaPreviewHalf;
-            PushItemWidth(square_sz * 12.0f); // Use 256 + bar sizes?
-            value_changed |= ColorPicker4("##picker", col, picker_flags, &g.ColorPickerRef.x);
-            PopItemWidth();
-            EndPopup();
-        }
-    }
-
-    if (label != label_display_end && !(flags & ImGuiColorEditFlags_NoLabel))
-    {
-        SameLine(0, style.ItemInnerSpacing.x);
-        TextUnformatted(label, label_display_end);
-    }
-
-    // Convert back
-    if (picker_active_window == NULL)
-    {
-        if (!value_changed_as_float)
-            for (int n = 0; n < 4; n++)
-                f[n] = i[n] / 255.0f;
-        if (flags & ImGuiColorEditFlags_HSV)
-            ColorConvertHSVtoRGB(f[0], f[1], f[2], f[0], f[1], f[2]);
-        if (value_changed)
-        {
-            col[0] = f[0];
-            col[1] = f[1];
-            col[2] = f[2];
-            if (alpha)
-                col[3] = f[3];
-        }
-    }
-
-    PopID();
-    EndGroup();
-
-    // Drag and Drop Target
-    // NB: The flag test is merely an optional micro-optimization, BeginDragDropTarget() does the same test.
-    if ((window->DC.LastItemStatusFlags & ImGuiItemStatusFlags_HoveredRect) && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropTarget())
-    {
-        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F))
-        {
-            memcpy((float*)col, payload->Data, sizeof(float) * 3);
-            value_changed = true;
-        }
-        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F))
-        {
-            memcpy((float*)col, payload->Data, sizeof(float) * components);
-            value_changed = true;
-        }
-        EndDragDropTarget();
-    }
-
-    // When picker is being actively used, use its active id so IsItemActive() will function on ColorEdit4().
-    if (picker_active_window && g.ActiveId != 0 && g.ActiveIdWindow == picker_active_window)
-        window->DC.LastItemId = g.ActiveId;
-
-    if (value_changed)
-        MarkItemEdited(window->DC.LastItemId);
-
-    return value_changed;
-}
-
-bool ImGui::ColorPicker3(const char* label, float col[3], ImGuiColorEditFlags flags)
-{
-    float col4[4] = { col[0], col[1], col[2], 1.0f };
-    if (!ColorPicker4(label, col4, flags | ImGuiColorEditFlags_NoAlpha))
-        return false;
-    col[0] = col4[0]; col[1] = col4[1]; col[2] = col4[2];
-    return true;
-}
-
-static void RenderArrowsForVerticalBar(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, float bar_w)
-{
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x + 1,         pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Right, IM_COL32_BLACK);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x,             pos.y), half_sz,                              ImGuiDir_Right, IM_COL32_WHITE);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x - 1, pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Left,  IM_COL32_BLACK);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x,     pos.y), half_sz,                              ImGuiDir_Left,  IM_COL32_WHITE);
-}
-
-// ColorPicker
-// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-// FIXME: we adjust the big color square height based on item width, which may cause a flickering feedback loop (if automatic height makes a vertical scrollbar appears, affecting automatic width..)
-bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags flags, const float* ref_col)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    ImDrawList* draw_list = window->DrawList;
-
-    ImGuiStyle& style = g.Style;
-    ImGuiIO& io = g.IO;
-
-    PushID(label);
-    BeginGroup();
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-        flags |= ImGuiColorEditFlags_NoSmallPreview;
-
-    // Context menu: display and store options.
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-
-    // Read stored options
-    if (!(flags & ImGuiColorEditFlags__PickerMask))
-        flags |= ((g.ColorEditOptions & ImGuiColorEditFlags__PickerMask) ? g.ColorEditOptions : ImGuiColorEditFlags__OptionsDefault) & ImGuiColorEditFlags__PickerMask;
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask))); // Check that only 1 is selected
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags_AlphaBar);
-
-    // Setup
-    int components = (flags & ImGuiColorEditFlags_NoAlpha) ? 3 : 4;
-    bool alpha_bar = (flags & ImGuiColorEditFlags_AlphaBar) && !(flags & ImGuiColorEditFlags_NoAlpha);
-    ImVec2 picker_pos = window->DC.CursorPos;
-    float square_sz = GetFrameHeight();
-    float bars_width = square_sz; // Arbitrary smallish width of Hue/Alpha picking bars
-    float sv_picker_size = ImMax(bars_width * 1, CalcItemWidth() - (alpha_bar ? 2 : 1) * (bars_width + style.ItemInnerSpacing.x)); // Saturation/Value picking box
-    float bar0_pos_x = picker_pos.x + sv_picker_size + style.ItemInnerSpacing.x;
-    float bar1_pos_x = bar0_pos_x + bars_width + style.ItemInnerSpacing.x;
-    float bars_triangles_half_sz = (float)(int)(bars_width * 0.20f);
-
-    float backup_initial_col[4];
-    memcpy(backup_initial_col, col, components * sizeof(float));
-
-    float wheel_thickness = sv_picker_size * 0.08f;
-    float wheel_r_outer = sv_picker_size * 0.50f;
-    float wheel_r_inner = wheel_r_outer - wheel_thickness;
-    ImVec2 wheel_center(picker_pos.x + (sv_picker_size + bars_width)*0.5f, picker_pos.y + sv_picker_size*0.5f);
-
-    // Note: the triangle is displayed rotated with triangle_pa pointing to Hue, but most coordinates stays unrotated for logic.
-    float triangle_r = wheel_r_inner - (int)(sv_picker_size * 0.027f);
-    ImVec2 triangle_pa = ImVec2(triangle_r, 0.0f); // Hue point.
-    ImVec2 triangle_pb = ImVec2(triangle_r * -0.5f, triangle_r * -0.866025f); // Black point.
-    ImVec2 triangle_pc = ImVec2(triangle_r * -0.5f, triangle_r * +0.866025f); // White point.
-
-    float H,S,V;
-    ColorConvertRGBtoHSV(col[0], col[1], col[2], H, S, V);
-
-    bool value_changed = false, value_changed_h = false, value_changed_sv = false;
-
-    PushItemFlag(ImGuiItemFlags_NoNav, true);
-    if (flags & ImGuiColorEditFlags_PickerHueWheel)
-    {
-        // Hue wheel + SV triangle logic
-        InvisibleButton("hsv", ImVec2(sv_picker_size + style.ItemInnerSpacing.x + bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            ImVec2 initial_off = g.IO.MouseClickedPos[0] - wheel_center;
-            ImVec2 current_off = g.IO.MousePos - wheel_center;
-            float initial_dist2 = ImLengthSqr(initial_off);
-            if (initial_dist2 >= (wheel_r_inner-1)*(wheel_r_inner-1) && initial_dist2 <= (wheel_r_outer+1)*(wheel_r_outer+1))
-            {
-                // Interactive with Hue wheel
-                H = ImAtan2(current_off.y, current_off.x) / IM_PI*0.5f;
-                if (H < 0.0f)
-                    H += 1.0f;
-                value_changed = value_changed_h = true;
-            }
-            float cos_hue_angle = ImCos(-H * 2.0f * IM_PI);
-            float sin_hue_angle = ImSin(-H * 2.0f * IM_PI);
-            if (ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, ImRotate(initial_off, cos_hue_angle, sin_hue_angle)))
-            {
-                // Interacting with SV triangle
-                ImVec2 current_off_unrotated = ImRotate(current_off, cos_hue_angle, sin_hue_angle);
-                if (!ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated))
-                    current_off_unrotated = ImTriangleClosestPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated);
-                float uu, vv, ww;
-                ImTriangleBarycentricCoords(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated, uu, vv, ww);
-                V = ImClamp(1.0f - vv, 0.0001f, 1.0f);
-                S = ImClamp(uu / V, 0.0001f, 1.0f);
-                value_changed = value_changed_sv = true;
-            }
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-    }
-    else if (flags & ImGuiColorEditFlags_PickerHueBar)
-    {
-        // SV rectangle logic
-        InvisibleButton("sv", ImVec2(sv_picker_size, sv_picker_size));
-        if (IsItemActive())
-        {
-            S = ImSaturate((io.MousePos.x - picker_pos.x) / (sv_picker_size-1));
-            V = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = value_changed_sv = true;
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-
-        // Hue bar logic
-        SetCursorScreenPos(ImVec2(bar0_pos_x, picker_pos.y));
-        InvisibleButton("hue", ImVec2(bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            H = ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = value_changed_h = true;
-        }
-    }
-
-    // Alpha bar logic
-    if (alpha_bar)
-    {
-        SetCursorScreenPos(ImVec2(bar1_pos_x, picker_pos.y));
-        InvisibleButton("alpha", ImVec2(bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            col[3] = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = true;
-        }
-    }
-    PopItemFlag(); // ImGuiItemFlags_NoNav
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-    {
-        SameLine(0, style.ItemInnerSpacing.x);
-        BeginGroup();
-    }
-
-    if (!(flags & ImGuiColorEditFlags_NoLabel))
-    {
-        const char* label_display_end = FindRenderedTextEnd(label);
-        if (label != label_display_end)
-        {
-            if ((flags & ImGuiColorEditFlags_NoSidePreview))
-                SameLine(0, style.ItemInnerSpacing.x);
-            TextUnformatted(label, label_display_end);
-        }
-    }
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-    {
-        PushItemFlag(ImGuiItemFlags_NoNavDefaultFocus, true);
-        ImVec4 col_v4(col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
-        if ((flags & ImGuiColorEditFlags_NoLabel))
-            Text("Current");
-        ColorButton("##current", col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2));
-        if (ref_col != NULL)
-        {
-            Text("Original");
-            ImVec4 ref_col_v4(ref_col[0], ref_col[1], ref_col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : ref_col[3]);
-            if (ColorButton("##original", ref_col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2)))
-            {
-                memcpy(col, ref_col, components * sizeof(float));
-                value_changed = true;
-            }
-        }
-        PopItemFlag();
-        EndGroup();
-    }
-
-    // Convert back color to RGB
-    if (value_changed_h || value_changed_sv)
-        ColorConvertHSVtoRGB(H >= 1.0f ? H - 10 * 1e-6f : H, S > 0.0f ? S : 10*1e-6f, V > 0.0f ? V : 1e-6f, col[0], col[1], col[2]);
-
-    // R,G,B and H,S,V slider color editor
-    bool value_changed_fix_hue_wrap = false;
-    if ((flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        PushItemWidth((alpha_bar ? bar1_pos_x : bar0_pos_x) + bars_width - picker_pos.x);
-        ImGuiColorEditFlags sub_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoOptions | ImGuiColorEditFlags_NoSmallPreview | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf;
-        ImGuiColorEditFlags sub_flags = (flags & sub_flags_to_forward) | ImGuiColorEditFlags_NoPicker;
-        if (flags & ImGuiColorEditFlags_RGB || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            if (ColorEdit4("##rgb", col, sub_flags | ImGuiColorEditFlags_RGB))
-            {
-                // FIXME: Hackily differenciating using the DragInt (ActiveId != 0 && !ActiveIdAllowOverlap) vs. using the InputText or DropTarget.
-                // For the later we don't want to run the hue-wrap canceling code. If you are well versed in HSV picker please provide your input! (See #2050)
-                value_changed_fix_hue_wrap = (g.ActiveId != 0 && !g.ActiveIdAllowOverlap);
-                value_changed = true;
-            }
-        if (flags & ImGuiColorEditFlags_HSV || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            value_changed |= ColorEdit4("##hsv", col, sub_flags | ImGuiColorEditFlags_HSV);
-        if (flags & ImGuiColorEditFlags_HEX || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            value_changed |= ColorEdit4("##hex", col, sub_flags | ImGuiColorEditFlags_HEX);
-        PopItemWidth();
-    }
-
-    // Try to cancel hue wrap (after ColorEdit4 call), if any
-    if (value_changed_fix_hue_wrap)
-    {
-        float new_H, new_S, new_V;
-        ColorConvertRGBtoHSV(col[0], col[1], col[2], new_H, new_S, new_V);
-        if (new_H <= 0 && H > 0)
-        {
-            if (new_V <= 0 && V != new_V)
-                ColorConvertHSVtoRGB(H, S, new_V <= 0 ? V * 0.5f : new_V, col[0], col[1], col[2]);
-            else if (new_S <= 0)
-                ColorConvertHSVtoRGB(H, new_S <= 0 ? S * 0.5f : new_S, new_V, col[0], col[1], col[2]);
-        }
-    }
-
-    ImVec4 hue_color_f(1, 1, 1, 1); ColorConvertHSVtoRGB(H, 1, 1, hue_color_f.x, hue_color_f.y, hue_color_f.z);
-    ImU32 hue_color32 = ColorConvertFloat4ToU32(hue_color_f);
-    ImU32 col32_no_alpha = ColorConvertFloat4ToU32(ImVec4(col[0], col[1], col[2], 1.0f));
-
-    const ImU32 hue_colors[6+1] = { IM_COL32(255,0,0,255), IM_COL32(255,255,0,255), IM_COL32(0,255,0,255), IM_COL32(0,255,255,255), IM_COL32(0,0,255,255), IM_COL32(255,0,255,255), IM_COL32(255,0,0,255) };
-    ImVec2 sv_cursor_pos;
-
-    if (flags & ImGuiColorEditFlags_PickerHueWheel)
-    {
-        // Render Hue Wheel
-        const float aeps = 1.5f / wheel_r_outer; // Half a pixel arc length in radians (2pi cancels out).
-        const int segment_per_arc = ImMax(4, (int)wheel_r_outer / 12);
-        for (int n = 0; n < 6; n++)
-        {
-            const float a0 = (n)     /6.0f * 2.0f * IM_PI - aeps;
-            const float a1 = (n+1.0f)/6.0f * 2.0f * IM_PI + aeps;
-            const int vert_start_idx = draw_list->VtxBuffer.Size;
-            draw_list->PathArcTo(wheel_center, (wheel_r_inner + wheel_r_outer)*0.5f, a0, a1, segment_per_arc);
-            draw_list->PathStroke(IM_COL32_WHITE, false, wheel_thickness);
-            const int vert_end_idx = draw_list->VtxBuffer.Size;
-
-            // Paint colors over existing vertices
-            ImVec2 gradient_p0(wheel_center.x + ImCos(a0) * wheel_r_inner, wheel_center.y + ImSin(a0) * wheel_r_inner);
-            ImVec2 gradient_p1(wheel_center.x + ImCos(a1) * wheel_r_inner, wheel_center.y + ImSin(a1) * wheel_r_inner);
-            ShadeVertsLinearColorGradientKeepAlpha(draw_list, vert_start_idx, vert_end_idx, gradient_p0, gradient_p1, hue_colors[n], hue_colors[n+1]);
-        }
-
-        // Render Cursor + preview on Hue Wheel
-        float cos_hue_angle = ImCos(H * 2.0f * IM_PI);
-        float sin_hue_angle = ImSin(H * 2.0f * IM_PI);
-        ImVec2 hue_cursor_pos(wheel_center.x + cos_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f, wheel_center.y + sin_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f);
-        float hue_cursor_rad = value_changed_h ? wheel_thickness * 0.65f : wheel_thickness * 0.55f;
-        int hue_cursor_segments = ImClamp((int)(hue_cursor_rad / 1.4f), 9, 32);
-        draw_list->AddCircleFilled(hue_cursor_pos, hue_cursor_rad, hue_color32, hue_cursor_segments);
-        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad+1, IM_COL32(128,128,128,255), hue_cursor_segments);
-        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad, IM_COL32_WHITE, hue_cursor_segments);
-
-        // Render SV triangle (rotated according to hue)
-        ImVec2 tra = wheel_center + ImRotate(triangle_pa, cos_hue_angle, sin_hue_angle);
-        ImVec2 trb = wheel_center + ImRotate(triangle_pb, cos_hue_angle, sin_hue_angle);
-        ImVec2 trc = wheel_center + ImRotate(triangle_pc, cos_hue_angle, sin_hue_angle);
-        ImVec2 uv_white = GetFontTexUvWhitePixel();
-        draw_list->PrimReserve(6, 6);
-        draw_list->PrimVtx(tra, uv_white, hue_color32);
-        draw_list->PrimVtx(trb, uv_white, hue_color32);
-        draw_list->PrimVtx(trc, uv_white, IM_COL32_WHITE);
-        draw_list->PrimVtx(tra, uv_white, IM_COL32_BLACK_TRANS);
-        draw_list->PrimVtx(trb, uv_white, IM_COL32_BLACK);
-        draw_list->PrimVtx(trc, uv_white, IM_COL32_BLACK_TRANS);
-        draw_list->AddTriangle(tra, trb, trc, IM_COL32(128,128,128,255), 1.5f);
-        sv_cursor_pos = ImLerp(ImLerp(trc, tra, ImSaturate(S)), trb, ImSaturate(1 - V));
-    }
-    else if (flags & ImGuiColorEditFlags_PickerHueBar)
-    {
-        // Render SV Square
-        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_WHITE, hue_color32, hue_color32, IM_COL32_WHITE);
-        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_BLACK_TRANS, IM_COL32_BLACK_TRANS, IM_COL32_BLACK, IM_COL32_BLACK);
-        RenderFrameBorder(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), 0.0f);
-        sv_cursor_pos.x = ImClamp((float)(int)(picker_pos.x + ImSaturate(S)     * sv_picker_size + 0.5f), picker_pos.x + 2, picker_pos.x + sv_picker_size - 2); // Sneakily prevent the circle to stick out too much
-        sv_cursor_pos.y = ImClamp((float)(int)(picker_pos.y + ImSaturate(1 - V) * sv_picker_size + 0.5f), picker_pos.y + 2, picker_pos.y + sv_picker_size - 2);
-
-        // Render Hue Bar
-        for (int i = 0; i < 6; ++i)
-            draw_list->AddRectFilledMultiColor(ImVec2(bar0_pos_x, picker_pos.y + i * (sv_picker_size / 6)), ImVec2(bar0_pos_x + bars_width, picker_pos.y + (i + 1) * (sv_picker_size / 6)), hue_colors[i], hue_colors[i], hue_colors[i + 1], hue_colors[i + 1]);
-        float bar0_line_y = (float)(int)(picker_pos.y + H * sv_picker_size + 0.5f);
-        RenderFrameBorder(ImVec2(bar0_pos_x, picker_pos.y), ImVec2(bar0_pos_x + bars_width, picker_pos.y + sv_picker_size), 0.0f);
-        RenderArrowsForVerticalBar(draw_list, ImVec2(bar0_pos_x - 1, bar0_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
-    }
-
-    // Render cursor/preview circle (clamp S/V within 0..1 range because floating points colors may lead HSV values to be out of range)
-    float sv_cursor_rad = value_changed_sv ? 10.0f : 6.0f;
-    draw_list->AddCircleFilled(sv_cursor_pos, sv_cursor_rad, col32_no_alpha, 12);
-    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad+1, IM_COL32(128,128,128,255), 12);
-    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad, IM_COL32_WHITE, 12);
-
-    // Render alpha bar
-    if (alpha_bar)
-    {
-        float alpha = ImSaturate(col[3]);
-        ImRect bar1_bb(bar1_pos_x, picker_pos.y, bar1_pos_x + bars_width, picker_pos.y + sv_picker_size);
-        RenderColorRectWithAlphaCheckerboard(bar1_bb.Min, bar1_bb.Max, IM_COL32(0,0,0,0), bar1_bb.GetWidth() / 2.0f, ImVec2(0.0f, 0.0f));
-        draw_list->AddRectFilledMultiColor(bar1_bb.Min, bar1_bb.Max, col32_no_alpha, col32_no_alpha, col32_no_alpha & ~IM_COL32_A_MASK, col32_no_alpha & ~IM_COL32_A_MASK);
-        float bar1_line_y = (float)(int)(picker_pos.y + (1.0f - alpha) * sv_picker_size + 0.5f);
-        RenderFrameBorder(bar1_bb.Min, bar1_bb.Max, 0.0f);
-        RenderArrowsForVerticalBar(draw_list, ImVec2(bar1_pos_x - 1, bar1_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
-    }
-
-    EndGroup();
-
-    if (value_changed && memcmp(backup_initial_col, col, components * sizeof(float)) == 0)
-        value_changed = false;
-    if (value_changed)
-        MarkItemEdited(window->DC.LastItemId);
-
-    PopID();
-
-    return value_changed;
-}
-
 // Horizontal/vertical separating line
 void ImGui::Separator()
 {
@@ -13082,7 +6107,7 @@
     window->DrawList->AddLine(bb.Min, ImVec2(bb.Max.x,bb.Min.y), GetColorU32(ImGuiCol_Separator));
 
     if (g.LogEnabled)
-            LogRenderedText(NULL, IM_NEWLINE "--------------------------------");
+        LogRenderedText(NULL, IM_NEWLINE "--------------------------------");
 
     if (window->DC.ColumnsSet)
     {
@@ -13309,6 +6334,1457 @@
     window->DC.LayoutType = backup_layout_type;
 }
 
+void ImGui::Indent(float indent_w)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    window->DC.Indent.x += (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
+    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
+}
+
+void ImGui::Unindent(float indent_w)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    window->DC.Indent.x -= (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
+    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
+}
+
+//-----------------------------------------------------------------------------
+// TOOLTIPS
+//-----------------------------------------------------------------------------
+
+void ImGui::BeginTooltip()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.DragDropWithinSourceOrTarget)
+    {
+        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
+        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
+        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
+        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
+        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
+        SetNextWindowPos(tooltip_pos);
+        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
+        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
+        BeginTooltipEx(0, true);
+    }
+    else
+    {
+        BeginTooltipEx(0, false);
+    }
+}
+
+// Not exposed publicly as BeginTooltip() because bool parameters are evil. Let's see if other needs arise first.
+void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, bool override_previous_tooltip)
+{
+    ImGuiContext& g = *GImGui;
+    char window_name[16];
+    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
+    if (override_previous_tooltip)
+        if (ImGuiWindow* window = FindWindowByName(window_name))
+            if (window->Active)
+            {
+                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
+                window->Hidden = true;
+                window->HiddenFramesRegular = 1;
+                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
+            }
+    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoInputs|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoNav;
+    Begin(window_name, NULL, flags | extra_flags);
+}
+
+void ImGui::EndTooltip()
+{
+    IM_ASSERT(GetCurrentWindowRead()->Flags & ImGuiWindowFlags_Tooltip);   // Mismatched BeginTooltip()/EndTooltip() calls
+    End();
+}
+
+void ImGui::SetTooltipV(const char* fmt, va_list args)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.DragDropWithinSourceOrTarget)
+        BeginTooltip();
+    else
+        BeginTooltipEx(0, true);
+    TextV(fmt, args);
+    EndTooltip();
+}
+
+void ImGui::SetTooltip(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    SetTooltipV(fmt, args);
+    va_end(args);
+}
+
+//-----------------------------------------------------------------------------
+// POPUPS
+//-----------------------------------------------------------------------------
+
+bool ImGui::IsPopupOpen(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == id;
+}
+
+bool ImGui::IsPopupOpen(const char* str_id)
+{
+    ImGuiContext& g = *GImGui;
+    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == g.CurrentWindow->GetID(str_id);
+}
+
+ImGuiWindow* ImGui::GetFrontMostPopupModal()
+{
+    ImGuiContext& g = *GImGui;
+    for (int n = g.OpenPopupStack.Size-1; n >= 0; n--)
+        if (ImGuiWindow* popup = g.OpenPopupStack.Data[n].Window)
+            if (popup->Flags & ImGuiWindowFlags_Modal)
+                return popup;
+    return NULL;
+}
+
+void ImGui::OpenPopup(const char* str_id)
+{
+    ImGuiContext& g = *GImGui;
+    OpenPopupEx(g.CurrentWindow->GetID(str_id));
+}
+
+// Mark popup as open (toggle toward open state).
+// Popups are closed when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
+// Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
+// One open popup per level of the popup hierarchy (NB: when assigning we reset the Window member of ImGuiPopupRef to NULL)
+void ImGui::OpenPopupEx(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* parent_window = g.CurrentWindow;
+    int current_stack_size = g.CurrentPopupStack.Size;
+    ImGuiPopupRef popup_ref; // Tagged as new ref as Window will be set back to NULL if we write this into OpenPopupStack.
+    popup_ref.PopupId = id;
+    popup_ref.Window = NULL;
+    popup_ref.ParentWindow = parent_window;
+    popup_ref.OpenFrameCount = g.FrameCount;
+    popup_ref.OpenParentId = parent_window->IDStack.back();
+    popup_ref.OpenMousePos = g.IO.MousePos;
+    popup_ref.OpenPopupPos = NavCalcPreferredRefPos();
+
+    //printf("[%05d] OpenPopupEx(0x%08X)\n", g.FrameCount, id);
+    if (g.OpenPopupStack.Size < current_stack_size + 1)
+    {
+        g.OpenPopupStack.push_back(popup_ref);
+    }
+    else
+    {
+        // Gently handle the user mistakenly calling OpenPopup() every frame. It is a programming mistake! However, if we were to run the regular code path, the ui
+        // would become completely unusable because the popup will always be in hidden-while-calculating-size state _while_ claiming focus. Which would be a very confusing
+        // situation for the programmer. Instead, we silently allow the popup to proceed, it will keep reappearing and the programming error will be more obvious to understand.
+        if (g.OpenPopupStack[current_stack_size].PopupId == id && g.OpenPopupStack[current_stack_size].OpenFrameCount == g.FrameCount - 1)
+        {
+            g.OpenPopupStack[current_stack_size].OpenFrameCount = popup_ref.OpenFrameCount;
+        }
+        else
+        {
+            // Close child popups if any, then flag popup for open/reopen
+            g.OpenPopupStack.resize(current_stack_size + 1);
+            g.OpenPopupStack[current_stack_size] = popup_ref;
+        }
+
+        // When reopening a popup we first refocus its parent, otherwise if its parent is itself a popup it would get closed by ClosePopupsOverWindow().
+        // This is equivalent to what ClosePopupToLevel() does.
+        //if (g.OpenPopupStack[current_stack_size].PopupId == id)
+        //    FocusWindow(parent_window);
+    }
+}
+
+bool ImGui::OpenPopupOnItemClick(const char* str_id, int mouse_button)
+{
+    ImGuiWindow* window = GImGui->CurrentWindow;
+    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+    {
+        ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
+        IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
+        OpenPopupEx(id);
+        return true;
+    }
+    return false;
+}
+
+void ImGui::ClosePopupsOverWindow(ImGuiWindow* ref_window)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.OpenPopupStack.empty())
+        return;
+
+    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
+    // Don't close our own child popup windows.
+    int n = 0;
+    if (ref_window)
+    {
+        for (n = 0; n < g.OpenPopupStack.Size; n++)
+        {
+            ImGuiPopupRef& popup = g.OpenPopupStack[n];
+            if (!popup.Window)
+                continue;
+            IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
+            if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
+                continue;
+
+            // Trim the stack if popups are not direct descendant of the reference window (which is often the NavWindow)
+            bool has_focus = false;
+            for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
+                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
+            if (!has_focus)
+                break;
+        }
+    }
+    if (n < g.OpenPopupStack.Size) // This test is not required but it allows to set a convenient breakpoint on the block below
+        ClosePopupToLevel(n);
+}
+
+void ImGui::ClosePopupToLevel(int remaining)
+{
+    IM_ASSERT(remaining >= 0);
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* focus_window = (remaining > 0) ? g.OpenPopupStack[remaining-1].Window : g.OpenPopupStack[0].ParentWindow;
+    if (g.NavLayer == 0)
+        focus_window = NavRestoreLastChildNavWindow(focus_window);
+    FocusWindow(focus_window);
+    focus_window->DC.NavHideHighlightOneFrame = true;
+    g.OpenPopupStack.resize(remaining);
+}
+
+void ImGui::ClosePopup(ImGuiID id)
+{
+    if (!IsPopupOpen(id))
+        return;
+    ImGuiContext& g = *GImGui;
+    ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+}
+
+// Close the popup we have begin-ed into.
+void ImGui::CloseCurrentPopup()
+{
+    ImGuiContext& g = *GImGui;
+    int popup_idx = g.CurrentPopupStack.Size - 1;
+    if (popup_idx < 0 || popup_idx >= g.OpenPopupStack.Size || g.CurrentPopupStack[popup_idx].PopupId != g.OpenPopupStack[popup_idx].PopupId)
+        return;
+    while (popup_idx > 0 && g.OpenPopupStack[popup_idx].Window && (g.OpenPopupStack[popup_idx].Window->Flags & ImGuiWindowFlags_ChildMenu))
+        popup_idx--;
+    ClosePopupToLevel(popup_idx);
+}
+
+bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (!IsPopupOpen(id))
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+
+    char name[20];
+    if (extra_flags & ImGuiWindowFlags_ChildMenu)
+        ImFormatString(name, IM_ARRAYSIZE(name), "##Menu_%02d", g.CurrentPopupStack.Size);    // Recycle windows based on depth
+    else
+        ImFormatString(name, IM_ARRAYSIZE(name), "##Popup_%08x", id); // Not recycling, so we can close/open during the same frame
+
+    bool is_open = Begin(name, NULL, extra_flags | ImGuiWindowFlags_Popup);
+    if (!is_open) // NB: Begin can return false when the popup is completely clipped (e.g. zero size display)
+        EndPopup();
+
+    return is_open;
+}
+
+bool ImGui::BeginPopup(const char* str_id, ImGuiWindowFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.OpenPopupStack.Size <= g.CurrentPopupStack.Size) // Early out for performance
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+    return BeginPopupEx(g.CurrentWindow->GetID(str_id), flags|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    const ImGuiID id = window->GetID(name);
+    if (!IsPopupOpen(id))
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+
+    // Center modal windows by default
+    // FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
+    if (g.NextWindowData.PosCond == 0)
+        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
+
+    bool is_open = Begin(name, p_open, flags | ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
+    if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
+    {
+        EndPopup();
+        if (is_open)
+            ClosePopup(id);
+        return false;
+    }
+    return is_open;
+}
+
+void ImGui::EndPopup()
+{
+    ImGuiContext& g = *GImGui; (void)g;
+    IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup);  // Mismatched BeginPopup()/EndPopup() calls
+    IM_ASSERT(g.CurrentPopupStack.Size > 0);
+
+    // Make all menus and popups wrap around for now, may need to expose that policy.
+    NavMoveRequestTryWrapping(g.CurrentWindow, ImGuiNavMoveFlags_LoopY);
+
+    End();
+}
+
+// This is a helper to handle the simplest case of associating one named popup to one given widget.
+// You may want to handle this on user side if you have specific needs (e.g. tweaking IsItemHovered() parameters).
+// You can pass a NULL str_id to use the identifier of the last item.
+bool ImGui::BeginPopupContextItem(const char* str_id, int mouse_button)
+{
+    ImGuiWindow* window = GImGui->CurrentWindow;
+    ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
+    IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
+    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+        OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupContextWindow(const char* str_id, int mouse_button, bool also_over_items)
+{
+    if (!str_id)
+        str_id = "window_context";
+    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
+    if (IsMouseReleased(mouse_button) && IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+        if (also_over_items || !IsAnyItemHovered())
+            OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupContextVoid(const char* str_id, int mouse_button)
+{
+    if (!str_id)
+        str_id = "void_context";
+    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
+    if (IsMouseReleased(mouse_button) && !IsWindowHovered(ImGuiHoveredFlags_AnyWindow))
+        OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+ImRect ImGui::GetWindowAllowedExtentRect(ImGuiWindow*)
+{
+    ImVec2 padding = GImGui->Style.DisplaySafeAreaPadding;
+    ImRect r_screen = GetViewportRect();
+    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
+    return r_screen;
+}
+
+// r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
+// r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
+ImVec2 ImGui::FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy)
+{
+    ImVec2 base_pos_clamped = ImClamp(ref_pos, r_outer.Min, r_outer.Max - size);
+    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
+    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
+
+    // Combo Box policy (we want a connecting edge)
+    if (policy == ImGuiPopupPositionPolicy_ComboBox)
+    {
+        const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Down, ImGuiDir_Right, ImGuiDir_Left, ImGuiDir_Up };
+        for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
+        {
+            const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+            if (n != -1 && dir == *last_dir) // Already tried this direction?
+                continue;
+            ImVec2 pos;
+            if (dir == ImGuiDir_Down)  pos = ImVec2(r_avoid.Min.x, r_avoid.Max.y);          // Below, Toward Right (default)
+            if (dir == ImGuiDir_Right) pos = ImVec2(r_avoid.Min.x, r_avoid.Min.y - size.y); // Above, Toward Right
+            if (dir == ImGuiDir_Left)  pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Max.y); // Below, Toward Left
+            if (dir == ImGuiDir_Up)    pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Min.y - size.y); // Above, Toward Left
+            if (!r_outer.Contains(ImRect(pos, pos + size)))
+                continue;
+            *last_dir = dir;
+            return pos;
+        }
+    }
+
+    // Default popup policy
+    const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
+    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
+    {
+        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+        if (n != -1 && dir == *last_dir) // Already tried this direction?
+            continue;
+        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
+        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
+        if (avail_w < size.x || avail_h < size.y)
+            continue;
+        ImVec2 pos;
+        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
+        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
+        *last_dir = dir;
+        return pos;
+    }
+
+    // Fallback, try to keep within display
+    *last_dir = ImGuiDir_None;
+    ImVec2 pos = ref_pos;
+    pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
+    pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
+    return pos;
+}
+
+ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+
+    ImRect r_outer = GetWindowAllowedExtentRect(window);
+    if (window->Flags & ImGuiWindowFlags_ChildMenu)
+    {
+        // Child menus typically request _any_ position within the parent menu item, and then our FindBestWindowPosForPopup() function will move the new menu outside the parent bounds.
+        // This is how we end up with child menus appearing (most-commonly) on the right of the parent menu.
+        IM_ASSERT(g.CurrentWindow == window);
+        ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.Size - 2];
+        float horizontal_overlap = g.Style.ItemSpacing.x;       // We want some overlap to convey the relative depth of each menu (currently the amount of overlap is hard-coded to style.ItemSpacing.x).
+        ImRect r_avoid;
+        if (parent_window->DC.MenuBarAppending)
+            r_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
+        else
+            r_avoid = ImRect(parent_window->Pos.x + horizontal_overlap, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - horizontal_overlap - parent_window->ScrollbarSizes.x, FLT_MAX);
+        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+    }
+    if (window->Flags & ImGuiWindowFlags_Popup)
+    {
+        ImRect r_avoid = ImRect(window->Pos.x - 1, window->Pos.y - 1, window->Pos.x + 1, window->Pos.y + 1);
+        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+    }
+    if (window->Flags & ImGuiWindowFlags_Tooltip)
+    {
+        // Position tooltip (always follows mouse)
+        float sc = g.Style.MouseCursorScale;
+        ImVec2 ref_pos = NavCalcPreferredRefPos();
+        ImRect r_avoid;
+        if (!g.NavDisableHighlight && g.NavDisableMouseHover && !(g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos))
+            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 16, ref_pos.y + 8);
+        else
+            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24 * sc, ref_pos.y + 24 * sc); // FIXME: Hard-coded based on mouse cursor shape expectation. Exact dimension not very important.
+        ImVec2 pos = FindBestWindowPosForPopupEx(ref_pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+        if (window->AutoPosLastDirection == ImGuiDir_None)
+            pos = ref_pos + ImVec2(2, 2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
+        return pos;
+    }
+    IM_ASSERT(0);
+    return window->Pos;
+}
+
+//-----------------------------------------------------------------------------
+// NAVIGATION
+//-----------------------------------------------------------------------------
+
+static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
+{
+    if (ImFabs(dx) > ImFabs(dy))
+        return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
+    return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
+}
+
+static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
+{
+    if (a1 < b0)
+        return a1 - b0;
+    if (b1 < a0)
+        return a0 - b1;
+    return 0.0f;
+}
+
+static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
+{
+    if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
+    {
+        r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
+        r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
+    }
+    else
+    {
+        r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
+        r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
+    }
+}
+
+// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
+static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    if (g.NavLayer != window->DC.NavLayerCurrent)
+        return false;
+
+    const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
+    g.NavScoringCount++;
+
+    // When entering through a NavFlattened border, we consider child window items as fully clipped for scoring
+    if (window->ParentWindow == g.NavWindow)
+    {
+        IM_ASSERT((window->Flags | g.NavWindow->Flags) & ImGuiWindowFlags_NavFlattened);
+        if (!window->ClipRect.Contains(cand))
+            return false;
+        cand.ClipWithFull(window->ClipRect); // This allows the scored item to not overlap other candidates in the parent window
+    }
+
+    // We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
+    // For example, this ensure that items in one column are not reached when moving vertically from items in another column.
+    NavClampRectToVisibleAreaForMoveDir(g.NavMoveClipDir, cand, window->ClipRect);
+
+    // Compute distance between boxes
+    // FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
+    float dbx = NavScoreItemDistInterval(cand.Min.x, cand.Max.x, curr.Min.x, curr.Max.x);
+    float dby = NavScoreItemDistInterval(ImLerp(cand.Min.y, cand.Max.y, 0.2f), ImLerp(cand.Min.y, cand.Max.y, 0.8f), ImLerp(curr.Min.y, curr.Max.y, 0.2f), ImLerp(curr.Min.y, curr.Max.y, 0.8f)); // Scale down on Y to keep using box-distance for vertically touching items
+    if (dby != 0.0f && dbx != 0.0f)
+       dbx = (dbx/1000.0f) + ((dbx > 0.0f) ? +1.0f : -1.0f);
+    float dist_box = ImFabs(dbx) + ImFabs(dby);
+
+    // Compute distance between centers (this is off by a factor of 2, but we only compare center distances with each other so it doesn't matter)
+    float dcx = (cand.Min.x + cand.Max.x) - (curr.Min.x + curr.Max.x);
+    float dcy = (cand.Min.y + cand.Max.y) - (curr.Min.y + curr.Max.y);
+    float dist_center = ImFabs(dcx) + ImFabs(dcy); // L1 metric (need this for our connectedness guarantee)
+
+    // Determine which quadrant of 'curr' our candidate item 'cand' lies in based on distance
+    ImGuiDir quadrant;
+    float dax = 0.0f, day = 0.0f, dist_axial = 0.0f;
+    if (dbx != 0.0f || dby != 0.0f)
+    {
+        // For non-overlapping boxes, use distance between boxes
+        dax = dbx;
+        day = dby;
+        dist_axial = dist_box;
+        quadrant = NavScoreItemGetQuadrant(dbx, dby);
+    }
+    else if (dcx != 0.0f || dcy != 0.0f)
+    {
+        // For overlapping boxes with different centers, use distance between centers
+        dax = dcx;
+        day = dcy;
+        dist_axial = dist_center;
+        quadrant = NavScoreItemGetQuadrant(dcx, dcy);
+    }
+    else
+    {
+        // Degenerate case: two overlapping buttons with same center, break ties arbitrarily (note that LastItemId here is really the _previous_ item order, but it doesn't matter)
+        quadrant = (window->DC.LastItemId < g.NavId) ? ImGuiDir_Left : ImGuiDir_Right;
+    }
+
+#if IMGUI_DEBUG_NAV_SCORING
+    char buf[128];
+    if (ImGui::IsMouseHoveringRect(cand.Min, cand.Max))
+    {
+        ImFormatString(buf, IM_ARRAYSIZE(buf), "dbox (%.2f,%.2f->%.4f)\ndcen (%.2f,%.2f->%.4f)\nd (%.2f,%.2f->%.4f)\nnav %c, quadrant %c", dbx, dby, dist_box, dcx, dcy, dist_center, dax, day, dist_axial, "WENS"[g.NavMoveDir], "WENS"[quadrant]);
+        ImDrawList* draw_list = ImGui::GetOverlayDrawList();
+        draw_list->AddRect(curr.Min, curr.Max, IM_COL32(255,200,0,100));
+        draw_list->AddRect(cand.Min, cand.Max, IM_COL32(255,255,0,200));
+        draw_list->AddRectFilled(cand.Max-ImVec2(4,4), cand.Max+ImGui::CalcTextSize(buf)+ImVec2(4,4), IM_COL32(40,0,0,150));
+        draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Max, ~0U, buf);
+    }
+    else if (g.IO.KeyCtrl) // Hold to preview score in matching quadrant. Press C to rotate.
+    {
+        if (IsKeyPressedMap(ImGuiKey_C)) { g.NavMoveDirLast = (ImGuiDir)((g.NavMoveDirLast + 1) & 3); g.IO.KeysDownDuration[g.IO.KeyMap[ImGuiKey_C]] = 0.01f; }
+        if (quadrant == g.NavMoveDir)
+        {
+            ImFormatString(buf, IM_ARRAYSIZE(buf), "%.0f/%.0f", dist_box, dist_center);
+            ImDrawList* draw_list = ImGui::GetOverlayDrawList();
+            draw_list->AddRectFilled(cand.Min, cand.Max, IM_COL32(255, 0, 0, 200));
+            draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Min, IM_COL32(255, 255, 255, 255), buf);
+        }
+    }
+ #endif
+
+    // Is it in the quadrant we're interesting in moving to?
+    bool new_best = false;
+    if (quadrant == g.NavMoveDir)
+    {
+        // Does it beat the current best candidate?
+        if (dist_box < result->DistBox)
+        {
+            result->DistBox = dist_box;
+            result->DistCenter = dist_center;
+            return true;
+        }
+        if (dist_box == result->DistBox)
+        {
+            // Try using distance between center points to break ties
+            if (dist_center < result->DistCenter)
+            {
+                result->DistCenter = dist_center;
+                new_best = true;
+            }
+            else if (dist_center == result->DistCenter)
+            {
+                // Still tied! we need to be extra-careful to make sure everything gets linked properly. We consistently break ties by symbolically moving "later" items
+                // (with higher index) to the right/downwards by an infinitesimal amount since we the current "best" button already (so it must have a lower index),
+                // this is fairly easy. This rule ensures that all buttons with dx==dy==0 will end up being linked in order of appearance along the x axis.
+                if (((g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down) ? dby : dbx) < 0.0f) // moving bj to the right/down decreases distance
+                    new_best = true;
+            }
+        }
+    }
+
+    // Axial check: if 'curr' has no link at all in some direction and 'cand' lies roughly in that direction, add a tentative link. This will only be kept if no "real" matches
+    // are found, so it only augments the graph produced by the above method using extra links. (important, since it doesn't guarantee strong connectedness)
+    // This is just to avoid buttons having no links in a particular direction when there's a suitable neighbor. you get good graphs without this too.
+    // 2017/09/29: FIXME: This now currently only enabled inside menu bars, ideally we'd disable it everywhere. Menus in particular need to catch failure. For general navigation it feels awkward.
+    // Disabling it may lead to disconnected graphs when nodes are very spaced out on different axis. Perhaps consider offering this as an option?
+    if (result->DistBox == FLT_MAX && dist_axial < result->DistAxial)  // Check axial match
+        if (g.NavLayer == 1 && !(g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
+            if ((g.NavMoveDir == ImGuiDir_Left && dax < 0.0f) || (g.NavMoveDir == ImGuiDir_Right && dax > 0.0f) || (g.NavMoveDir == ImGuiDir_Up && day < 0.0f) || (g.NavMoveDir == ImGuiDir_Down && day > 0.0f))
+            {
+                result->DistAxial = dist_axial;
+                new_best = true;
+            }
+
+    return new_best;
+}
+
+// We get there when either NavId == id, or when g.NavAnyRequest is set (which is updated by NavUpdateAnyRequestFlag above)
+static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    //if (!g.IO.NavActive)  // [2017/10/06] Removed this possibly redundant test but I am not sure of all the side-effects yet. Some of the feature here will need to work regardless of using a _NoNavInputs flag.
+    //    return;
+
+    const ImGuiItemFlags item_flags = window->DC.ItemFlags;
+    const ImRect nav_bb_rel(nav_bb.Min - window->Pos, nav_bb.Max - window->Pos);
+
+    // Process Init Request
+    if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
+    {
+        // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
+        {
+            g.NavInitResultId = id;
+            g.NavInitResultRectRel = nav_bb_rel;
+        }
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
+        {
+            g.NavInitRequest = false; // Found a match, clear request
+            NavUpdateAnyRequestFlag();
+        }
+    }
+
+    // Process Move Request (scoring for navigation)
+    // FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
+    if ((g.NavId != id || (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AllowCurrentNavId)) && !(item_flags & ImGuiItemFlags_NoNav))
+    {
+        ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
+#if IMGUI_DEBUG_NAV_SCORING
+        // [DEBUG] Score all items in NavWindow at all times
+        if (!g.NavMoveRequest)
+            g.NavMoveDir = g.NavMoveDirLast;
+        bool new_best = NavScoreItem(result, nav_bb) && g.NavMoveRequest;
+#else
+        bool new_best = g.NavMoveRequest && NavScoreItem(result, nav_bb);
+#endif
+        if (new_best)
+        {
+            result->ID = id;
+            result->Window = window;
+            result->RectRel = nav_bb_rel;
+        }
+
+        const float VISIBLE_RATIO = 0.70f;
+        if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
+            if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
+                if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
+                {
+                    result = &g.NavMoveResultLocalVisibleSet;
+                    result->ID = id;
+                    result->Window = window;
+                    result->RectRel = nav_bb_rel;
+                }
+    }
+
+    // Update window-relative bounding box of navigated item
+    if (g.NavId == id)
+    {
+        g.NavWindow = window;                                           // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
+        g.NavLayer = window->DC.NavLayerCurrent;
+        g.NavIdIsAlive = true;
+        g.NavIdTabCounter = window->FocusIdxTabCounter;
+        window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel;    // Store item bounding box (relative to window position)
+    }
+}
+
+bool ImGui::NavMoveRequestButNoResultYet()
+{
+    ImGuiContext& g = *GImGui;
+    return g.NavMoveRequest && g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0;
+}
+
+void ImGui::NavMoveRequestCancel()
+{
+    ImGuiContext& g = *GImGui;
+    g.NavMoveRequest = false;
+    NavUpdateAnyRequestFlag();
+}
+
+void ImGui::NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, const ImRect& bb_rel, ImGuiNavMoveFlags move_flags)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_None);
+    ImGui::NavMoveRequestCancel();
+    g.NavMoveDir = move_dir;
+    g.NavMoveClipDir = clip_dir;
+    g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
+    g.NavMoveRequestFlags = move_flags;
+    g.NavWindow->NavRectRel[g.NavLayer] = bb_rel;
+}
+
+void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavWindow != window || !NavMoveRequestButNoResultYet() || g.NavMoveRequestForward != ImGuiNavForward_None || g.NavLayer != 0)
+        return;
+    IM_ASSERT(move_flags != 0); // No points calling this with no wrapping
+    ImRect bb_rel = window->NavRectRel[0];
+
+    ImGuiDir clip_dir = g.NavMoveDir;
+    if (g.NavMoveDir == ImGuiDir_Left && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
+    {
+        bb_rel.Min.x = bb_rel.Max.x = ImMax(window->SizeFull.x, window->SizeContents.x) - window->Scroll.x;
+        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(-bb_rel.GetHeight()); clip_dir = ImGuiDir_Up; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Right && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
+    {
+        bb_rel.Min.x = bb_rel.Max.x = -window->Scroll.x;
+        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(+bb_rel.GetHeight()); clip_dir = ImGuiDir_Down; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Up && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
+    {
+        bb_rel.Min.y = bb_rel.Max.y = ImMax(window->SizeFull.y, window->SizeContents.y) - window->Scroll.y;
+        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(-bb_rel.GetWidth()); clip_dir = ImGuiDir_Left; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Down && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
+    {
+        bb_rel.Min.y = bb_rel.Max.y = -window->Scroll.y;
+        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(+bb_rel.GetWidth()); clip_dir = ImGuiDir_Right; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+}
+
+static void ImGui::NavSaveLastChildNavWindow(ImGuiWindow* nav_window)
+{
+    ImGuiWindow* parent_window = nav_window;
+    while (parent_window && (parent_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (parent_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
+        parent_window = parent_window->ParentWindow;
+    if (parent_window && parent_window != nav_window)
+        parent_window->NavLastChildNavWindow = nav_window;
+}
+
+// Call when we are expected to land on Layer 0 after FocusWindow()
+static ImGuiWindow* ImGui::NavRestoreLastChildNavWindow(ImGuiWindow* window)
+{
+    return window->NavLastChildNavWindow ? window->NavLastChildNavWindow : window;
+}
+
+static void NavRestoreLayer(int layer)
+{
+    ImGuiContext& g = *GImGui;
+    g.NavLayer = layer;
+    if (layer == 0)
+        g.NavWindow = ImGui::NavRestoreLastChildNavWindow(g.NavWindow);
+    if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
+        ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
+    else
+        ImGui::NavInitWindow(g.NavWindow, true);
+}
+
+static inline void ImGui::NavUpdateAnyRequestFlag()
+{
+    ImGuiContext& g = *GImGui;
+    g.NavAnyRequest = g.NavMoveRequest || g.NavInitRequest || (IMGUI_DEBUG_NAV_SCORING && g.NavWindow != NULL);
+    if (g.NavAnyRequest)
+        IM_ASSERT(g.NavWindow != NULL);
+}
+
+// This needs to be called before we submit any widget (aka in or before Begin)
+void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(window == g.NavWindow);
+    bool init_for_nav = false;
+    if (!(window->Flags & ImGuiWindowFlags_NoNavInputs))
+        if (!(window->Flags & ImGuiWindowFlags_ChildWindow) || (window->Flags & ImGuiWindowFlags_Popup) || (window->NavLastIds[0] == 0) || force_reinit)
+            init_for_nav = true;
+    if (init_for_nav)
+    {
+        SetNavID(0, g.NavLayer);
+        g.NavInitRequest = true;
+        g.NavInitRequestFromMove = false;
+        g.NavInitResultId = 0;
+        g.NavInitResultRectRel = ImRect();
+        NavUpdateAnyRequestFlag();
+    }
+    else
+    {
+        g.NavId = window->NavLastIds[0];
+    }
+}
+
+static ImVec2 ImGui::NavCalcPreferredRefPos()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow)
+        return ImFloor(g.IO.MousePos);
+
+    // When navigation is active and mouse is disabled, decide on an arbitrary position around the bottom left of the currently navigated item
+    const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
+    ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x*4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
+    ImRect visible_rect = GetViewportRect();
+    return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
+}
+
+float ImGui::GetNavInputAmount(ImGuiNavInput n, ImGuiInputReadMode mode)
+{
+    ImGuiContext& g = *GImGui;
+    if (mode == ImGuiInputReadMode_Down)
+        return g.IO.NavInputs[n];                         // Instant, read analog input (0.0f..1.0f, as provided by user)
+
+    const float t = g.IO.NavInputsDownDuration[n];
+    if (t < 0.0f && mode == ImGuiInputReadMode_Released)  // Return 1.0f when just released, no repeat, ignore analog input.
+        return (g.IO.NavInputsDownDurationPrev[n] >= 0.0f ? 1.0f : 0.0f);
+    if (t < 0.0f)
+        return 0.0f;
+    if (mode == ImGuiInputReadMode_Pressed)               // Return 1.0f when just pressed, no repeat, ignore analog input.
+        return (t == 0.0f) ? 1.0f : 0.0f;
+    if (mode == ImGuiInputReadMode_Repeat)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
+    if (mode == ImGuiInputReadMode_RepeatSlow)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 1.00f, g.IO.KeyRepeatRate * 2.00f);
+    if (mode == ImGuiInputReadMode_RepeatFast)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.30f);
+    return 0.0f;
+}
+
+ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor, float fast_factor)
+{
+    ImVec2 delta(0.0f, 0.0f);
+    if (dir_sources & ImGuiNavDirSourceFlags_Keyboard)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_KeyRight_, mode)   - GetNavInputAmount(ImGuiNavInput_KeyLeft_,   mode), GetNavInputAmount(ImGuiNavInput_KeyDown_,   mode) - GetNavInputAmount(ImGuiNavInput_KeyUp_,   mode));
+    if (dir_sources & ImGuiNavDirSourceFlags_PadDPad)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_DpadRight, mode)   - GetNavInputAmount(ImGuiNavInput_DpadLeft,   mode), GetNavInputAmount(ImGuiNavInput_DpadDown,   mode) - GetNavInputAmount(ImGuiNavInput_DpadUp,   mode));
+    if (dir_sources & ImGuiNavDirSourceFlags_PadLStick)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_LStickRight, mode) - GetNavInputAmount(ImGuiNavInput_LStickLeft, mode), GetNavInputAmount(ImGuiNavInput_LStickDown, mode) - GetNavInputAmount(ImGuiNavInput_LStickUp, mode));
+    if (slow_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakSlow))
+        delta *= slow_factor;
+    if (fast_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakFast))
+        delta *= fast_factor;
+    return delta;
+}
+
+// Scroll to keep newly navigated item fully into view
+// NB: We modify rect_rel by the amount we scrolled for, so it is immediately updated.
+static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item_rect)
+{
+    ImRect window_rect(window->InnerMainRect.Min - ImVec2(1, 1), window->InnerMainRect.Max + ImVec2(1, 1));
+    //g.OverlayDrawList.AddRect(window_rect.Min, window_rect.Max, IM_COL32_WHITE); // [DEBUG]
+    if (window_rect.Contains(item_rect))
+        return;
+
+    ImGuiContext& g = *GImGui;
+    if (window->ScrollbarX && item_rect.Min.x < window_rect.Min.x)
+    {
+        window->ScrollTarget.x = item_rect.Min.x - window->Pos.x + window->Scroll.x - g.Style.ItemSpacing.x;
+        window->ScrollTargetCenterRatio.x = 0.0f;
+    }
+    else if (window->ScrollbarX && item_rect.Max.x >= window_rect.Max.x)
+    {
+        window->ScrollTarget.x = item_rect.Max.x - window->Pos.x + window->Scroll.x + g.Style.ItemSpacing.x;
+        window->ScrollTargetCenterRatio.x = 1.0f;
+    }
+    if (item_rect.Min.y < window_rect.Min.y)
+    {
+        window->ScrollTarget.y = item_rect.Min.y - window->Pos.y + window->Scroll.y - g.Style.ItemSpacing.y;
+        window->ScrollTargetCenterRatio.y = 0.0f;
+    }
+    else if (item_rect.Max.y >= window_rect.Max.y)
+    {
+        window->ScrollTarget.y = item_rect.Max.y - window->Pos.y + window->Scroll.y + g.Style.ItemSpacing.y;
+        window->ScrollTargetCenterRatio.y = 1.0f;
+    }
+}
+
+static void ImGui::NavUpdate()
+{
+    ImGuiContext& g = *GImGui;
+    g.IO.WantSetMousePos = false;
+#if 0
+    if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
+#endif
+
+    // Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
+    bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
+    bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
+    if (nav_gamepad_active)
+        if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
+            g.NavInputSource = ImGuiInputSource_NavGamepad;
+
+    // Update Keyboard->Nav inputs mapping
+    if (nav_keyboard_active)
+    {
+        #define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
+        NAV_MAP_KEY(ImGuiKey_Space,     ImGuiNavInput_Activate );
+        NAV_MAP_KEY(ImGuiKey_Enter,     ImGuiNavInput_Input    );
+        NAV_MAP_KEY(ImGuiKey_Escape,    ImGuiNavInput_Cancel   );
+        NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
+        NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
+        NAV_MAP_KEY(ImGuiKey_UpArrow,   ImGuiNavInput_KeyUp_   );
+        NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
+        if (g.IO.KeyCtrl)   g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
+        if (g.IO.KeyShift)  g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
+        if (g.IO.KeyAlt)    g.IO.NavInputs[ImGuiNavInput_KeyMenu_]  = 1.0f;
+        #undef NAV_MAP_KEY
+    }
+    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
+    for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
+        g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
+
+    // Process navigation init request (select first/default focus)
+    if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
+    {
+        // Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
+        IM_ASSERT(g.NavWindow);
+        if (g.NavInitRequestFromMove)
+            SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
+        else
+            SetNavID(g.NavInitResultId, g.NavLayer);
+        g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
+    }
+    g.NavInitRequest = false;
+    g.NavInitRequestFromMove = false;
+    g.NavInitResultId = 0;
+    g.NavJustMovedToId = 0;
+
+    // Process navigation move request
+    if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
+        NavUpdateMoveResult();
+
+    // When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
+    if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
+    {
+        IM_ASSERT(g.NavMoveRequest);
+        if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
+            g.NavDisableHighlight = false;
+        g.NavMoveRequestForward = ImGuiNavForward_None;
+    }
+
+    // Apply application mouse position movement, after we had a chance to process move request result.
+    if (g.NavMousePosDirty && g.NavIdIsAlive)
+    {
+        // Set mouse position given our knowledge of the navigated item position from last frame
+        if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
+        {
+            if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
+            {
+                g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
+                g.IO.WantSetMousePos = true;
+            }
+        }
+        g.NavMousePosDirty = false;
+    }
+    g.NavIdIsAlive = false;
+    g.NavJustTabbedId = 0;
+    IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
+
+    // Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
+    if (g.NavWindow)
+        NavSaveLastChildNavWindow(g.NavWindow);
+    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
+        g.NavWindow->NavLastChildNavWindow = NULL;
+
+    // Update CTRL+TAB and Windowing features (hold Square to move/resize/etc.)
+    NavUpdateWindowing();
+
+    // Set output flags for user application
+    g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
+    g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
+
+    // Process NavCancel input (to close a popup, get back to parent, clear focus)
+    if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
+    {
+        if (g.ActiveId != 0)
+        {
+            ClearActiveID();
+        }
+        else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
+        {
+            // Exit child window
+            ImGuiWindow* child_window = g.NavWindow;
+            ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
+            IM_ASSERT(child_window->ChildId != 0);
+            FocusWindow(parent_window);
+            SetNavID(child_window->ChildId, 0);
+            g.NavIdIsAlive = false;
+            if (g.NavDisableMouseHover)
+                g.NavMousePosDirty = true;
+        }
+        else if (g.OpenPopupStack.Size > 0)
+        {
+            // Close open popup/menu
+            if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
+                ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+        }
+        else if (g.NavLayer != 0)
+        {
+            // Leave the "menu" layer
+            NavRestoreLayer(0);
+        }
+        else
+        {
+            // Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
+            if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
+                g.NavWindow->NavLastIds[0] = 0;
+            g.NavId = 0;
+        }
+    }
+
+    // Process manual activation request
+    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
+    if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+    {
+        bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
+        bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
+        if (g.ActiveId == 0 && activate_pressed)
+            g.NavActivateId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
+            g.NavActivateDownId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
+            g.NavActivatePressedId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
+            g.NavInputId = g.NavId;
+    }
+    if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+        g.NavDisableHighlight = true;
+    if (g.NavActivateId != 0)
+        IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
+    g.NavMoveRequest = false;
+
+    // Process programmatic activation request
+    if (g.NavNextActivateId != 0)
+        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
+    g.NavNextActivateId = 0;
+
+    // Initiate directional inputs request
+    const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
+    if (g.NavMoveRequestForward == ImGuiNavForward_None)
+    {
+        g.NavMoveDir = ImGuiDir_None;
+        g.NavMoveRequestFlags = 0;
+        if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+        {
+            if ((allowed_dir_flags & (1<<ImGuiDir_Left))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Up))    && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp,   ImGuiNavInput_KeyUp_,   ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Down))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
+        }
+        g.NavMoveClipDir = g.NavMoveDir;
+    }
+    else
+    {
+        // Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
+        // (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
+        IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
+        IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
+        g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
+    }
+
+    // Update PageUp/PageDown scroll
+    float nav_scoring_rect_offset_y = 0.0f;
+    if (nav_keyboard_active)
+        nav_scoring_rect_offset_y = NavUpdatePageUpPageDown(allowed_dir_flags);
+
+    // If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
+    if (g.NavMoveDir != ImGuiDir_None)
+    {
+        g.NavMoveRequest = true;
+        g.NavMoveDirLast = g.NavMoveDir;
+    }
+    if (g.NavMoveRequest && g.NavId == 0)
+    {
+        g.NavInitRequest = g.NavInitRequestFromMove = true;
+        g.NavInitResultId = 0;
+        g.NavDisableHighlight = false;
+    }
+    NavUpdateAnyRequestFlag();
+
+    // Scrolling
+    if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
+    {
+        // *Fallback* manual-scroll with Nav directional keys when window has no navigable item
+        ImGuiWindow* window = g.NavWindow;
+        const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
+        if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
+        {
+            if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
+                SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
+            if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
+                SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
+        }
+
+        // *Normal* Manual scroll with NavScrollXXX keys
+        // Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
+        ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
+        if (scroll_dir.x != 0.0f && window->ScrollbarX)
+        {
+            SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
+            g.NavMoveFromClampedRefRect = true;
+        }
+        if (scroll_dir.y != 0.0f)
+        {
+            SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
+            g.NavMoveFromClampedRefRect = true;
+        }
+    }
+
+    // Reset search results
+    g.NavMoveResultLocal.Clear();
+    g.NavMoveResultLocalVisibleSet.Clear();
+    g.NavMoveResultOther.Clear();
+
+    // When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
+    if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
+    {
+        ImGuiWindow* window = g.NavWindow;
+        ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
+        if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
+        {
+            float pad = window->CalcFontSize() * 0.5f;
+            window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
+            window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
+            g.NavId = 0;
+        }
+        g.NavMoveFromClampedRefRect = false;
+    }
+
+    // For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
+    ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
+    g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
+    g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
+    g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
+    g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
+    IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
+    //g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
+    g.NavScoringCount = 0;
+#if IMGUI_DEBUG_NAV_RECTS
+    if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
+    if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
+#endif
+}
+
+static void ImGui::NavUpdateMoveResult()
+{
+    // Select which result to use
+    ImGuiContext& g = *GImGui;
+    ImGuiNavMoveResult* result = (g.NavMoveResultLocal.ID != 0) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
+
+    // PageUp/PageDown behavior first jumps to the bottom/top mostly visible item, _otherwise_ use the result from the previous/next page.
+    if (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet)
+        if (g.NavMoveResultLocalVisibleSet.ID != 0 && g.NavMoveResultLocalVisibleSet.ID != g.NavId)
+            result = &g.NavMoveResultLocalVisibleSet;
+
+    // Maybe entering a flattened child from the outside? In this case solve the tie using the regular scoring rules.
+    if (result != &g.NavMoveResultOther && g.NavMoveResultOther.ID != 0 && g.NavMoveResultOther.Window->ParentWindow == g.NavWindow)
+        if ((g.NavMoveResultOther.DistBox < result->DistBox) || (g.NavMoveResultOther.DistBox == result->DistBox && g.NavMoveResultOther.DistCenter < result->DistCenter))
+            result = &g.NavMoveResultOther;
+    IM_ASSERT(g.NavWindow && result->Window);
+
+    // Scroll to keep newly navigated item fully into view.
+    if (g.NavLayer == 0)
+    {
+        ImRect rect_abs = ImRect(result->RectRel.Min + result->Window->Pos, result->RectRel.Max + result->Window->Pos);
+        NavScrollToBringItemIntoView(result->Window, rect_abs);
+
+        // Estimate upcoming scroll so we can offset our result position so mouse position can be applied immediately after in NavUpdate()
+        ImVec2 next_scroll = CalcNextScrollFromScrollTargetAndClamp(result->Window, false);
+        ImVec2 delta_scroll = result->Window->Scroll - next_scroll;
+        result->RectRel.Translate(delta_scroll);
+
+        // Also scroll parent window to keep us into view if necessary (we could/should technically recurse back the whole the parent hierarchy).
+        if (result->Window->Flags & ImGuiWindowFlags_ChildWindow)
+            NavScrollToBringItemIntoView(result->Window->ParentWindow, ImRect(rect_abs.Min + delta_scroll, rect_abs.Max + delta_scroll));
+    }
+
+    // Apply result from previous frame navigation directional move request
+    ClearActiveID();
+    g.NavWindow = result->Window;
+    SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
+    g.NavJustMovedToId = result->ID;
+    g.NavMoveFromClampedRefRect = false;
+}
+
+static float ImGui::NavUpdatePageUpPageDown(int allowed_dir_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavMoveDir == ImGuiDir_None && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget && g.NavLayer == 0)
+    {
+        ImGuiWindow* window = g.NavWindow;
+        bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && (allowed_dir_flags & (1 << ImGuiDir_Up));
+        bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && (allowed_dir_flags & (1 << ImGuiDir_Down));
+        if ((page_up_held && !page_down_held) || (page_down_held && !page_up_held))
+        {
+            if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
+            {
+                // Fallback manual-scroll when window has no navigable item
+                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
+                    SetWindowScrollY(window, window->Scroll.y - window->InnerClipRect.GetHeight());
+                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
+                    SetWindowScrollY(window, window->Scroll.y + window->InnerClipRect.GetHeight());
+            }
+            else
+            {
+                const ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
+                const float page_offset_y = ImMax(0.0f, window->InnerClipRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
+                float nav_scoring_rect_offset_y = 0.0f;
+                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
+                {
+                    nav_scoring_rect_offset_y = -page_offset_y;
+                    g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
+                    g.NavMoveClipDir = ImGuiDir_Up;
+                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
+                }
+                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
+                {
+                    nav_scoring_rect_offset_y = +page_offset_y;
+                    g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
+                    g.NavMoveClipDir = ImGuiDir_Down;
+                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
+                }
+                return nav_scoring_rect_offset_y;
+            }
+        }
+    }
+    return 0.0f;
+}
+
+static int FindWindowIndex(ImGuiWindow* window) // FIXME-OPT O(N)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = g.Windows.Size-1; i >= 0; i--)
+        if (g.Windows[i] == window)
+            return i;
+    return -1;
+}
+
+static ImGuiWindow* FindWindowNavFocusable(int i_start, int i_stop, int dir) // FIXME-OPT O(N)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = i_start; i >= 0 && i < g.Windows.Size && i != i_stop; i += dir)
+        if (ImGui::IsWindowNavFocusable(g.Windows[i]))
+            return g.Windows[i];
+    return NULL;
+}
+
+static void NavUpdateWindowingHighlightWindow(int focus_change_dir)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavWindowingTarget);
+    if (g.NavWindowingTarget->Flags & ImGuiWindowFlags_Modal)
+        return;
+
+    const int i_current = FindWindowIndex(g.NavWindowingTarget);
+    ImGuiWindow* window_target = FindWindowNavFocusable(i_current + focus_change_dir, -INT_MAX, focus_change_dir);
+    if (!window_target)
+        window_target = FindWindowNavFocusable((focus_change_dir < 0) ? (g.Windows.Size - 1) : 0, i_current, focus_change_dir);
+    if (window_target) // Don't reset windowing target if there's a single window in the list
+        g.NavWindowingTarget = g.NavWindowingTargetAnim = window_target;
+    g.NavWindowingToggleLayer = false;
+}
+
+// Window management mode (hold to: change focus/move/resize, tap to: toggle menu layer)
+static void ImGui::NavUpdateWindowing()
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* apply_focus_window = NULL;
+    bool apply_toggle_layer = false;
+
+    ImGuiWindow* modal_window = GetFrontMostPopupModal();
+    if (modal_window != NULL)
+    {
+        g.NavWindowingTarget = NULL;
+        return;
+    }
+
+    // Fade out
+    if (g.NavWindowingTargetAnim && g.NavWindowingTarget == NULL)
+    {
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha - g.IO.DeltaTime * 10.0f, 0.0f);
+        if (g.DimBgRatio <= 0.0f && g.NavWindowingHighlightAlpha <= 0.0f)
+            g.NavWindowingTargetAnim = NULL;
+    }
+
+    // Start CTRL-TAB or Square+L/R window selection
+    bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
+    bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
+    if (start_windowing_with_gamepad || start_windowing_with_keyboard)
+        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.Windows.Size - 1, -INT_MAX, -1))
+        {
+            g.NavWindowingTarget = g.NavWindowingTargetAnim = window;
+            g.NavWindowingTimer = g.NavWindowingHighlightAlpha = 0.0f;
+            g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
+            g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
+        }
+
+    // Gamepad update
+    g.NavWindowingTimer += g.IO.DeltaTime;
+    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavGamepad)
+    {
+        // Highlight only appears after a brief time holding the button, so that a fast tap on PadMenu (to toggle NavLayer) doesn't add visual noise
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f));
+
+        // Select window to focus
+        const int focus_change_dir = (int)IsNavInputPressed(ImGuiNavInput_FocusPrev, ImGuiInputReadMode_RepeatSlow) - (int)IsNavInputPressed(ImGuiNavInput_FocusNext, ImGuiInputReadMode_RepeatSlow);
+        if (focus_change_dir != 0)
+        {
+            NavUpdateWindowingHighlightWindow(focus_change_dir);
+            g.NavWindowingHighlightAlpha = 1.0f;
+        }
+
+        // Single press toggles NavLayer, long press with L/R apply actual focus on release (until then the window was merely rendered front-most)
+        if (!IsNavInputDown(ImGuiNavInput_Menu))
+        {
+            g.NavWindowingToggleLayer &= (g.NavWindowingHighlightAlpha < 1.0f); // Once button was held long enough we don't consider it a tap-to-toggle-layer press anymore.
+            if (g.NavWindowingToggleLayer && g.NavWindow)
+                apply_toggle_layer = true;
+            else if (!g.NavWindowingToggleLayer)
+                apply_focus_window = g.NavWindowingTarget;
+            g.NavWindowingTarget = NULL;
+        }
+    }
+
+    // Keyboard: Focus
+    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavKeyboard)
+    {
+        // Visuals only appears after a brief time after pressing TAB the first time, so that a fast CTRL+TAB doesn't add visual noise
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f)); // 1.0f
+        if (IsKeyPressedMap(ImGuiKey_Tab, true))
+            NavUpdateWindowingHighlightWindow(g.IO.KeyShift ? +1 : -1);
+        if (!g.IO.KeyCtrl)
+            apply_focus_window = g.NavWindowingTarget;
+    }
+
+    // Keyboard: Press and Release ALT to toggle menu layer
+    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
+    if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && IsNavInputPressed(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))
+        if (IsMousePosValid(&g.IO.MousePos) == IsMousePosValid(&g.IO.MousePosPrev))
+            apply_toggle_layer = true;
+
+    // Move window
+    if (g.NavWindowingTarget && !(g.NavWindowingTarget->Flags & ImGuiWindowFlags_NoMove))
+    {
+        ImVec2 move_delta;
+        if (g.NavInputSource == ImGuiInputSource_NavKeyboard && !g.IO.KeyShift)
+            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard, ImGuiInputReadMode_Down);
+        if (g.NavInputSource == ImGuiInputSource_NavGamepad)
+            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down);
+        if (move_delta.x != 0.0f || move_delta.y != 0.0f)
+        {
+            const float NAV_MOVE_SPEED = 800.0f;
+            const float move_speed = ImFloor(NAV_MOVE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); // FIXME: Doesn't code variable framerate very well
+            g.NavWindowingTarget->RootWindow->Pos += move_delta * move_speed;
+            g.NavDisableMouseHover = true;
+            MarkIniSettingsDirty(g.NavWindowingTarget);
+        }
+    }
+
+    // Apply final focus
+    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
+    {
+        g.NavDisableHighlight = false;
+        g.NavDisableMouseHover = true;
+        apply_focus_window = NavRestoreLastChildNavWindow(apply_focus_window);
+        ClosePopupsOverWindow(apply_focus_window);
+        FocusWindow(apply_focus_window);
+        if (apply_focus_window->NavLastIds[0] == 0)
+            NavInitWindow(apply_focus_window, false);
+
+        // If the window only has a menu layer, select it directly
+        if (apply_focus_window->DC.NavLayerActiveMask == (1 << 1))
+            g.NavLayer = 1;
+    }
+    if (apply_focus_window)
+        g.NavWindowingTarget = NULL;
+
+    // Apply menu/layer toggle
+    if (apply_toggle_layer && g.NavWindow)
+    {
+        // Move to parent menu if necessary
+        ImGuiWindow* new_nav_window = g.NavWindow;
+        while ((new_nav_window->DC.NavLayerActiveMask & (1 << 1)) == 0 && (new_nav_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (new_nav_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
+            new_nav_window = new_nav_window->ParentWindow;
+        if (new_nav_window != g.NavWindow)
+        {
+            ImGuiWindow* old_nav_window = g.NavWindow;
+            FocusWindow(new_nav_window);
+            new_nav_window->NavLastChildNavWindow = old_nav_window;
+        }
+        g.NavDisableHighlight = false;
+        g.NavDisableMouseHover = true;
+        NavRestoreLayer((g.NavWindow->DC.NavLayerActiveMask & (1 << 1)) ? (g.NavLayer ^ 1) : 0);
+    }
+}
+
+// Window has already passed the IsWindowNavFocusable()
+static const char* GetFallbackWindowNameForWindowingList(ImGuiWindow* window)
+{
+    if (window->Flags & ImGuiWindowFlags_Popup)
+        return "(Popup)";
+    if ((window->Flags & ImGuiWindowFlags_MenuBar) && strcmp(window->Name, "##MainMenuBar") == 0)
+        return "(Main menu bar)";
+    return "(Untitled)";
+}
+
+// Overlay displayed when using CTRL+TAB. Called by EndFrame().
+void ImGui::NavUpdateWindowingList()
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavWindowingTarget != NULL);
+
+    if (g.NavWindowingTimer < NAV_WINDOWING_LIST_APPEAR_DELAY)
+        return;
+
+    if (g.NavWindowingList == NULL)
+        g.NavWindowingList = FindWindowByName("###NavWindowingList");
+    SetNextWindowSizeConstraints(ImVec2(g.IO.DisplaySize.x * 0.20f, g.IO.DisplaySize.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
+    SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
+    PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
+    Begin("###NavWindowingList", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings);
+    for (int n = g.Windows.Size - 1; n >= 0; n--)
+    {
+        ImGuiWindow* window = g.Windows[n];
+        if (!IsWindowNavFocusable(window))
+            continue;
+        const char* label = window->Name;
+        if (label == FindRenderedTextEnd(label))
+            label = GetFallbackWindowNameForWindowingList(window);
+        Selectable(label, g.NavWindowingTarget == window);
+    }
+    End();
+    PopStyleVar();
+}
+
+//-----------------------------------------------------------------------------
+// COLUMNS
+//-----------------------------------------------------------------------------
+
 void ImGui::NextColumn()
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -13627,94 +8103,6 @@
         BeginColumns(id, columns_count, flags);
 }
 
-void ImGui::Indent(float indent_w)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    window->DC.Indent.x += (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
-    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
-}
-
-void ImGui::Unindent(float indent_w)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    window->DC.Indent.x -= (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
-    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
-}
-
-void ImGui::TreePush(const char* str_id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    PushID(str_id ? str_id : "#TreePush");
-}
-
-void ImGui::TreePush(const void* ptr_id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    PushID(ptr_id ? ptr_id : (const void*)"#TreePush");
-}
-
-void ImGui::TreePushRawID(ImGuiID id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    window->IDStack.push_back(id);
-}
-
-void ImGui::TreePop()
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    Unindent();
-
-    window->DC.TreeDepth--;
-    if (g.NavMoveDir == ImGuiDir_Left && g.NavWindow == window && NavMoveRequestButNoResultYet())
-        if (g.NavIdIsAlive && (window->DC.TreeDepthMayJumpToParentOnPop & (1 << window->DC.TreeDepth)))
-        {
-            SetNavID(window->IDStack.back(), g.NavLayer);
-            NavMoveRequestCancel();
-        }
-    window->DC.TreeDepthMayJumpToParentOnPop &= (1 << window->DC.TreeDepth) - 1;
-
-    IM_ASSERT(window->IDStack.Size > 1); // There should always be 1 element in the IDStack (pushed during window creation). If this triggers you called TreePop/PopID too much.
-    PopID();
-}
-
-void ImGui::Value(const char* prefix, bool b)
-{
-    Text("%s: %s", prefix, (b ? "true" : "false"));
-}
-
-void ImGui::Value(const char* prefix, int v)
-{
-    Text("%s: %d", prefix, v);
-}
-
-void ImGui::Value(const char* prefix, unsigned int v)
-{
-    Text("%s: %d", prefix, v);
-}
-
-void ImGui::Value(const char* prefix, float v, const char* float_format)
-{
-    if (float_format)
-    {
-        char fmt[64];
-        ImFormatString(fmt, IM_ARRAYSIZE(fmt), "%%s: %s", float_format);
-        Text(fmt, prefix, v);
-    }
-    else
-    {
-        Text("%s: %.3f", prefix, v);
-    }
-}
-
 //-----------------------------------------------------------------------------
 // DRAG AND DROP
 //-----------------------------------------------------------------------------
@@ -14003,6 +8391,397 @@
 }
 
 //-----------------------------------------------------------------------------
+// LOGGING
+//-----------------------------------------------------------------------------
+
+// Pass text data straight to log (without being displayed)
+void ImGui::LogText(const char* fmt, ...)
+{
+    ImGuiContext& g = *GImGui;
+    if (!g.LogEnabled)
+        return;
+
+    va_list args;
+    va_start(args, fmt);
+    if (g.LogFile)
+        vfprintf(g.LogFile, fmt, args);
+    else
+        g.LogClipboard.appendfv(fmt, args);
+    va_end(args);
+}
+
+// Internal version that takes a position to decide on newline placement and pad items according to their depth.
+// We split text into individual lines to add current tree level padding
+void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    if (!text_end)
+        text_end = FindRenderedTextEnd(text, text_end);
+
+    const bool log_new_line = ref_pos && (ref_pos->y > window->DC.LogLinePosY + 1);
+    if (ref_pos)
+        window->DC.LogLinePosY = ref_pos->y;
+
+    const char* text_remaining = text;
+    if (g.LogStartDepth > window->DC.TreeDepth)  // Re-adjust padding if we have popped out of our starting depth
+        g.LogStartDepth = window->DC.TreeDepth;
+    const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth);
+    for (;;)
+    {
+        // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry.
+        const char* line_end = text_remaining;
+        while (line_end < text_end)
+            if (*line_end == '\n')
+                break;
+            else
+                line_end++;
+        if (line_end >= text_end)
+            line_end = NULL;
+
+        const bool is_first_line = (text == text_remaining);
+        bool is_last_line = false;
+        if (line_end == NULL)
+        {
+            is_last_line = true;
+            line_end = text_end;
+        }
+        if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
+        {
+            const int char_count = (int)(line_end - text_remaining);
+            if (log_new_line || !is_first_line)
+                LogText(IM_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining);
+            else
+                LogText(" %.*s", char_count, text_remaining);
+        }
+
+        if (is_last_line)
+            break;
+        text_remaining = line_end + 1;
+    }
+}
+
+// Start logging ImGui output to TTY
+void ImGui::LogToTTY(int max_depth)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = stdout;
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+// Start logging ImGui output to given file
+void ImGui::LogToFile(int max_depth, const char* filename)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    if (!filename)
+    {
+        filename = g.IO.LogFilename;
+        if (!filename)
+            return;
+    }
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = ImFileOpen(filename, "ab");
+    if (!g.LogFile)
+    {
+        IM_ASSERT(g.LogFile != NULL); // Consider this an error
+        return;
+    }
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+// Start logging ImGui output to clipboard
+void ImGui::LogToClipboard(int max_depth)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = NULL;
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+void ImGui::LogFinish()
+{
+    ImGuiContext& g = *GImGui;
+    if (!g.LogEnabled)
+        return;
+
+    LogText(IM_NEWLINE);
+    if (g.LogFile != NULL)
+    {
+        if (g.LogFile == stdout)
+            fflush(g.LogFile);
+        else
+            fclose(g.LogFile);
+        g.LogFile = NULL;
+    }
+    if (g.LogClipboard.size() > 1)
+    {
+        SetClipboardText(g.LogClipboard.begin());
+        g.LogClipboard.clear();
+    }
+    g.LogEnabled = false;
+}
+
+// Helper to display logging buttons
+void ImGui::LogButtons()
+{
+    ImGuiContext& g = *GImGui;
+
+    PushID("LogButtons");
+    const bool log_to_tty = Button("Log To TTY"); SameLine();
+    const bool log_to_file = Button("Log To File"); SameLine();
+    const bool log_to_clipboard = Button("Log To Clipboard"); SameLine();
+    PushItemWidth(80.0f);
+    PushAllowKeyboardFocus(false);
+    SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL);
+    PopAllowKeyboardFocus();
+    PopItemWidth();
+    PopID();
+
+    // Start logging at the end of the function so that the buttons don't appear in the log
+    if (log_to_tty)
+        LogToTTY(g.LogAutoExpandMaxDepth);
+    if (log_to_file)
+        LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename);
+    if (log_to_clipboard)
+        LogToClipboard(g.LogAutoExpandMaxDepth);
+}
+
+//-----------------------------------------------------------------------------
+// SETTINGS
+//-----------------------------------------------------------------------------
+
+void ImGui::MarkIniSettingsDirty()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.SettingsDirtyTimer <= 0.0f)
+        g.SettingsDirtyTimer = g.IO.IniSavingRate;
+}
+
+void ImGui::MarkIniSettingsDirty(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+    if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings))
+        if (g.SettingsDirtyTimer <= 0.0f)
+            g.SettingsDirtyTimer = g.IO.IniSavingRate;
+}
+
+static ImGuiWindowSettings* CreateNewWindowSettings(const char* name)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsWindows.push_back(ImGuiWindowSettings());
+    ImGuiWindowSettings* settings = &g.SettingsWindows.back();
+    settings->Name = ImStrdup(name);
+    settings->ID = ImHash(name, 0);
+    return settings;
+}
+
+ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = 0; i != g.SettingsWindows.Size; i++)
+        if (g.SettingsWindows[i].ID == id)
+            return &g.SettingsWindows[i];
+    return NULL;
+}
+
+void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
+{
+    size_t file_data_size = 0;
+    char* file_data = (char*)ImFileLoadToMemory(ini_filename, "rb", &file_data_size);
+    if (!file_data)
+        return;
+    LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
+    ImGui::MemFree(file_data);
+}
+
+ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
+{
+    ImGuiContext& g = *GImGui;
+    const ImGuiID type_hash = ImHash(type_name, 0, 0);
+    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
+        if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
+            return &g.SettingsHandlers[handler_n];
+    return NULL;
+}
+
+// Zero-tolerance, no error reporting, cheap .ini parsing
+void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.Initialized);
+    IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
+
+    // For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
+    // For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
+    if (ini_size == 0)
+        ini_size = strlen(ini_data);
+    char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
+    char* buf_end = buf + ini_size;
+    memcpy(buf, ini_data, ini_size);
+    buf[ini_size] = 0;
+
+    void* entry_data = NULL;
+    ImGuiSettingsHandler* entry_handler = NULL;
+
+    char* line_end = NULL;
+    for (char* line = buf; line < buf_end; line = line_end + 1)
+    {
+        // Skip new lines markers, then find end of the line
+        while (*line == '\n' || *line == '\r')
+            line++;
+        line_end = line;
+        while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
+            line_end++;
+        line_end[0] = 0;
+
+        if (line[0] == '[' && line_end > line && line_end[-1] == ']')
+        {
+            // Parse "[Type][Name]". Note that 'Name' can itself contains [] characters, which is acceptable with the current format and parsing code.
+            line_end[-1] = 0;
+            const char* name_end = line_end - 1;
+            const char* type_start = line + 1;
+            char* type_end = (char*)(intptr_t)ImStrchrRange(type_start, name_end, ']');
+            const char* name_start = type_end ? ImStrchrRange(type_end + 1, name_end, '[') : NULL;
+            if (!type_end || !name_start)
+            {
+                name_start = type_start; // Import legacy entries that have no type
+                type_start = "Window";
+            }
+            else
+            {
+                *type_end = 0; // Overwrite first ']'
+                name_start++;  // Skip second '['
+            }
+            entry_handler = FindSettingsHandler(type_start);
+            entry_data = entry_handler ? entry_handler->ReadOpenFn(&g, entry_handler, name_start) : NULL;
+        }
+        else if (entry_handler != NULL && entry_data != NULL)
+        {
+            // Let type handler parse the line
+            entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
+        }
+    }
+    ImGui::MemFree(buf);
+    g.SettingsLoaded = true;
+}
+
+void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsDirtyTimer = 0.0f;
+    if (!ini_filename)
+        return;
+
+    size_t ini_data_size = 0;
+    const char* ini_data = SaveIniSettingsToMemory(&ini_data_size);
+    FILE* f = ImFileOpen(ini_filename, "wt");
+    if (!f)
+        return;
+    fwrite(ini_data, sizeof(char), ini_data_size, f);
+    fclose(f);
+}
+
+// Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer
+const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsDirtyTimer = 0.0f;
+    g.SettingsIniData.Buf.resize(0);
+    g.SettingsIniData.Buf.push_back(0);
+    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
+    {
+        ImGuiSettingsHandler* handler = &g.SettingsHandlers[handler_n];
+        handler->WriteAllFn(&g, handler, &g.SettingsIniData);
+    }
+    if (out_size)
+        *out_size = (size_t)g.SettingsIniData.size();
+    return g.SettingsIniData.c_str();
+}
+
+static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
+{
+    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHash(name, 0));
+    if (!settings)
+        settings = CreateNewWindowSettings(name);
+    return (void*)settings;
+}
+
+static void SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
+{
+    ImGuiWindowSettings* settings = (ImGuiWindowSettings*)entry;
+    float x, y;
+    int i;
+    if (sscanf(line, "Pos=%f,%f", &x, &y) == 2)         settings->Pos = ImVec2(x, y);
+    else if (sscanf(line, "Size=%f,%f", &x, &y) == 2)   settings->Size = ImMax(ImVec2(x, y), GImGui->Style.WindowMinSize);
+    else if (sscanf(line, "Collapsed=%d", &i) == 1)     settings->Collapsed = (i != 0);
+}
+
+static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
+{
+    // Gather data from windows that were active during this session
+    ImGuiContext& g = *imgui_ctx;
+    for (int i = 0; i != g.Windows.Size; i++)
+    {
+        ImGuiWindow* window = g.Windows[i];
+        if (window->Flags & ImGuiWindowFlags_NoSavedSettings)
+            continue;
+
+        ImGuiWindowSettings* settings = (window->SettingsIdx != -1) ? &g.SettingsWindows[window->SettingsIdx] : ImGui::FindWindowSettings(window->ID);
+        if (!settings)
+        {
+            settings = CreateNewWindowSettings(window->Name);
+            window->SettingsIdx = g.SettingsWindows.index_from_pointer(settings);
+        }
+        IM_ASSERT(settings->ID == window->ID);
+        settings->Pos = window->Pos;
+        settings->Size = window->SizeFull;
+        settings->Collapsed = window->Collapsed;
+    }
+
+    // Write a buffer
+    // If a window wasn't opened in this session we preserve its settings
+    buf->reserve(buf->size() + g.SettingsWindows.Size * 96); // ballpark reserve
+    for (int i = 0; i != g.SettingsWindows.Size; i++)
+    {
+        const ImGuiWindowSettings* settings = &g.SettingsWindows[i];
+        if (settings->Pos.x == FLT_MAX)
+            continue;
+        const char* name = settings->Name;
+        if (const char* p = strstr(name, "###"))  // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID()
+            name = p;
+        buf->appendf("[%s][%s]\n", handler->TypeName, name);
+        buf->appendf("Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
+        buf->appendf("Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
+        buf->appendf("Collapsed=%d\n", settings->Collapsed);
+        buf->appendf("\n");
+    }
+}
+
+//-----------------------------------------------------------------------------
 // PLATFORM DEPENDENT HELPERS
 //-----------------------------------------------------------------------------
 
@@ -14119,7 +8898,7 @@
 #endif
 
 //-----------------------------------------------------------------------------
-// HELP, METRICS
+// METRICS/DEBUG WINDOW
 //-----------------------------------------------------------------------------
 
 void ImGui::ShowMetricsWindow(bool* p_open)
diff --git a/imgui.h b/imgui.h
index 52caf45..97f79a8 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (headers)
 
 // See imgui.cpp file for documentation.
@@ -23,8 +23,8 @@
 
 // Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY00 then bounced up to XYY01 when release tagging happens)
-#define IMGUI_VERSION               "1.63"
-#define IMGUI_VERSION_NUM           16301
+#define IMGUI_VERSION               "1.64"
+#define IMGUI_VERSION_NUM           16401
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert))
 
 // Define attributes of all API symbols declarations (e.g. for DLL under Windows)
diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index 49ef8bc..1702474 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (demo code)
 
 // Message to the person tempted to delete this file when integrating ImGui into their code base:

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj b/examples/example_win32_directx11/example_win32_directx11.vcxproj
index 9aa0986..166602a 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx11.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
index ab1e3fb..1df6a0c 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_dx11.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj b/examples/example_win32_directx12/example_win32_directx12.vcxproj
index c82f000..38c8335 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx12.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
index 43fdeba..28a2557 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj b/examples/example_win32_directx9/example_win32_directx9.vcxproj
index ebc8a92..08f21c8 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj
@@ -143,6 +143,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx9.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
index 2ac28d1..914cd26 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_dx9.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/imgui.cpp b/imgui.cpp
index 0b3ea0f..28b986a 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (main code and documentation)
 
 // Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp for demo code.
@@ -19,32 +19,58 @@
 
 /*
 
- Index
- - MISSION STATEMENT
- - END-USER GUIDE
- - PROGRAMMER GUIDE (read me!)
-   - Read first
-   - How to update to a newer version of Dear ImGui
-   - Getting started with integrating Dear ImGui in your code/engine
-   - Using gamepad/keyboard navigation controls [BETA]
- - API BREAKING CHANGES (read me when you update!)
- - ISSUES & TODO LIST
- - FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
-   - How can I tell whether to dispatch mouse/keyboard to imgui or to my application?
-   - How can I display an image? What is ImTextureID, how does it works?
-   - How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.
-   - How can I use my own math types instead of ImVec2/ImVec4? 
-   - How can I load a different font than the default?
-   - How can I easily use icons in my application?
-   - How can I load multiple fonts?
-   - How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
-   - How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
-   - I integrated Dear ImGui in my engine and the text or lines are blurry..
-   - I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
-   - How can I help?
- - ISSUES & TODO-LIST
- - CODE
+Index of this file:
 
+DOCUMENTATION
+- MISSION STATEMENT
+- END-USER GUIDE
+- PROGRAMMER GUIDE (read me!)
+  - Read first
+  - How to update to a newer version of Dear ImGui
+  - Getting started with integrating Dear ImGui in your code/engine
+  - Using gamepad/keyboard navigation controls [BETA]
+- API BREAKING CHANGES (read me when you update!)
+- FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
+  - How can I tell whether to dispatch mouse/keyboard to imgui or to my application?
+  - How can I display an image? What is ImTextureID, how does it works?
+  - How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.
+  - How can I use my own math types instead of ImVec2/ImVec4? 
+  - How can I load a different font than the default?
+  - How can I easily use icons in my application?
+  - How can I load multiple fonts?
+  - How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
+  - How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
+  - I integrated Dear ImGui in my engine and the text or lines are blurry..
+  - I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
+  - How can I help?
+
+CODE
+- Forward Declarations
+- Context and Memory Allocators
+- User facing structures (ImGuiStyle, ImGuiIO)
+- Helper/Utilities (ImXXX functions, Color functions)
+- ImGuiStorage
+- ImGuiTextFilter
+- ImGuiTextBuffer
+- ImGuiListClipper
+- Main Code (most of the code! lots of stuff, needs tidying up)
+- Tooltips
+- Popups
+- Navigation
+- Columns
+- Drag and Drop
+- Logging
+- Settings
+- Platform Dependent Helpers
+- Metrics/Debug window
+
+*/
+
+//-----------------------------------------------------------------------------
+// Documentation
+//-----------------------------------------------------------------------------
+
+/*
 
  MISSION STATEMENT
  =================
@@ -472,11 +498,6 @@
  - 2014/08/28 (1.09) - changed the behavior of IO.PixelCenterOffset following various rendering fixes
 
 
- ISSUES & TODO-LIST
- ==================
- See TODO.txt
-
-
  FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
  ======================================
 
@@ -824,7 +845,6 @@
 // Visual Studio warnings
 #ifdef _MSC_VER
 #pragma warning (disable: 4127) // condition expression is constant
-#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
 #pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
 #endif
 
@@ -852,24 +872,6 @@
 #endif
 #endif
 
-static const ImS32  IM_S32_MIN = INT_MIN;    // (-2147483647 - 1), (0x80000000);
-static const ImS32  IM_S32_MAX = INT_MAX;    // (2147483647), (0x7FFFFFFF)
-static const ImU32  IM_U32_MIN = 0;
-static const ImU32  IM_U32_MAX = UINT_MAX;   // (0xFFFFFFFF)
-#ifdef LLONG_MIN
-static const ImS64  IM_S64_MIN = LLONG_MIN;  // (-9223372036854775807ll - 1ll);
-static const ImS64  IM_S64_MAX = LLONG_MAX;  // (9223372036854775807ll);
-#else
-static const ImS64  IM_S64_MIN = -9223372036854775807LL - 1;
-static const ImS64  IM_S64_MAX = 9223372036854775807LL;
-#endif
-static const ImU64  IM_U64_MIN = 0;
-#ifdef ULLONG_MAX
-static const ImU64  IM_U64_MAX = ULLONG_MAX; // (0xFFFFFFFFFFFFFFFFull);
-#else
-static const ImU64  IM_U64_MAX = (2ULL * 9223372036854775807LL + 1);
-#endif
-
 // When using CTRL+TAB (or Gamepad Square+L/R) we delay the visual a little in order to reduce visual noise doing a fast switch.
 static const float NAV_WINDOWING_HIGHLIGHT_DELAY   = 0.20f; // Time before the highlight and screen dimming starts fading in
 static const float NAV_WINDOWING_LIST_APPEAR_DELAY = 0.15f; // Time before the window list starts to appear
@@ -884,7 +886,6 @@
 static void             SetWindowCollapsed(ImGuiWindow* window, bool collapsed, ImGuiCond cond);
 static void             FindHoveredWindow();
 static ImGuiWindow*     CreateNewWindow(const char* name, ImVec2 size, ImGuiWindowFlags flags);
-static ImGuiWindowSettings* CreateNewWindowSettings(const char* name);
 static void             CheckStacksSize(ImGuiWindow* window, bool write);
 static ImVec2           CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window, bool snap_on_edges);
 
@@ -894,13 +895,15 @@
 
 static ImRect           GetViewportRect();
 
-static bool             InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data);
-static int              InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end);
-static ImVec2           InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL, ImVec2* out_offset = NULL, bool stop_on_new_line = false);
+// Settings
+static void*            SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name);
+static void             SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line);
+static void             SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf);
 
-static inline int       DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format);
-static void             DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg_1, const void* arg_2);
-static bool             DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format);
+// Platform Dependents default implementation for IO functions
+static const char*      GetClipboardTextFn_DefaultImpl(void* user_data);
+static void             SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
+static void             ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
 
 namespace ImGui
 {
@@ -909,29 +912,20 @@
 static void             NavUpdate();
 static void             NavUpdateWindowing();
 static void             NavUpdateWindowingList();
+static void             NavUpdateMoveResult();
+static float            NavUpdatePageUpPageDown(int allowed_dir_flags);
+static inline void      NavUpdateAnyRequestFlag();
 static void             NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id);
+static ImVec2           NavCalcPreferredRefPos();
+static void             NavSaveLastChildNavWindow(ImGuiWindow* nav_window);
+static ImGuiWindow*     NavRestoreLastChildNavWindow(ImGuiWindow* window);
 
 static void             UpdateMouseInputs();
 static void             UpdateMouseWheel();
 static void             UpdateManualResize(ImGuiWindow* window, const ImVec2& size_auto_fit, int* border_held, int resize_grip_count, ImU32 resize_grip_col[4]);
-
-// Template widget behaviors
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool             DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power);
-
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool             SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb);
 }
 
 //-----------------------------------------------------------------------------
-// Platform dependent default implementations
-//-----------------------------------------------------------------------------
-
-static const char*      GetClipboardTextFn_DefaultImpl(void* user_data);
-static void             SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
-static void             ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
-
-//-----------------------------------------------------------------------------
 // Context and Memory Allocators
 //-----------------------------------------------------------------------------
 
@@ -961,7 +955,7 @@
 static void*    GImAllocatorUserData = NULL;
 
 //-----------------------------------------------------------------------------
-// User facing structures
+// User facing main structures
 //-----------------------------------------------------------------------------
 
 ImGuiStyle::ImGuiStyle()
@@ -1106,7 +1100,7 @@
 }
 
 //-----------------------------------------------------------------------------
-// HELPERS
+// HELPERS/UTILITIES
 //-----------------------------------------------------------------------------
 
 ImVec2 ImLineClosestPoint(const ImVec2& a, const ImVec2& b, const ImVec2& p)
@@ -1245,19 +1239,6 @@
     buf[p - p_start] = 0;                   // Zero terminate
 }
 
-template<typename TYPE>
-static const char* ImAtoi(const char* src, TYPE* output)
-{
-    int negative = 0;
-    if (*src == '-') { negative = 1; src++; }
-    if (*src == '+') { src++; }
-    TYPE v = 0;
-    while (*src >= '0' && *src <= '9')
-        v = (v * 10) + (*src++ - '0');
-    *output = negative ? -v : v;
-    return src;
-}
-
 // A) MSVC version appears to return -1 on overflow, whereas glibc appears to return total count (which may be >= buf_size).
 // Ideally we would test for only one of those limits at runtime depending on the behavior the vsnprintf(), but trying to deduct it at compile time sounds like a pandora can of worm.
 // B) When buf==NULL vsnprintf() will return the output size.
@@ -1338,7 +1319,7 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImText* helpers
+// HELPERS/UTILITIES (ImText* helpers)
 //-----------------------------------------------------------------------------
 
 // Convert UTF-8 to 32-bits character, process single character input.
@@ -1520,109 +1501,6 @@
     return bytes_count;
 }
 
-ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
-{
-    float s = 1.0f/255.0f;
-    return ImVec4(
-        ((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
-}
-
-ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
-{
-    ImU32 out;
-    out  = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
-    return out;
-}
-
-ImU32 ImGui::GetColorU32(ImGuiCol idx, float alpha_mul)
-{
-    ImGuiStyle& style = GImGui->Style;
-    ImVec4 c = style.Colors[idx];
-    c.w *= style.Alpha * alpha_mul;
-    return ColorConvertFloat4ToU32(c);
-}
-
-ImU32 ImGui::GetColorU32(const ImVec4& col)
-{
-    ImGuiStyle& style = GImGui->Style;
-    ImVec4 c = col;
-    c.w *= style.Alpha;
-    return ColorConvertFloat4ToU32(c);
-}
-
-const ImVec4& ImGui::GetStyleColorVec4(ImGuiCol idx)
-{
-    ImGuiStyle& style = GImGui->Style;
-    return style.Colors[idx];
-}
-
-ImU32 ImGui::GetColorU32(ImU32 col)
-{
-    float style_alpha = GImGui->Style.Alpha;
-    if (style_alpha >= 1.0f)
-        return col;
-    ImU32 a = (col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT;
-    a = (ImU32)(a * style_alpha); // We don't need to clamp 0..255 because Style.Alpha is in 0..1 range.
-    return (col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
-}
-
-// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
-// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
-void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
-{
-    float K = 0.f;
-    if (g < b)
-    {
-        ImSwap(g, b);
-        K = -1.f;
-    }
-    if (r < g)
-    {
-        ImSwap(r, g);
-        K = -2.f / 6.f - K;
-    }
-
-    const float chroma = r - (g < b ? g : b);
-    out_h = ImFabs(K + (g - b) / (6.f * chroma + 1e-20f));
-    out_s = chroma / (r + 1e-20f);
-    out_v = r;
-}
-
-// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
-// also http://en.wikipedia.org/wiki/HSL_and_HSV
-void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
-{
-    if (s == 0.0f)
-    {
-        // gray
-        out_r = out_g = out_b = v;
-        return;
-    }
-
-    h = ImFmod(h, 1.0f) / (60.0f/360.0f);
-    int   i = (int)h;
-    float f = h - (float)i;
-    float p = v * (1.0f - s);
-    float q = v * (1.0f - s * f);
-    float t = v * (1.0f - s * (1.0f - f));
-
-    switch (i)
-    {
-    case 0: out_r = v; out_g = t; out_b = p; break;
-    case 1: out_r = q; out_g = v; out_b = p; break;
-    case 2: out_r = p; out_g = v; out_b = t; break;
-    case 3: out_r = p; out_g = q; out_b = v; break;
-    case 4: out_r = t; out_g = p; out_b = v; break;
-    case 5: default: out_r = v; out_g = p; out_b = q; break;
-    }
-}
-
 FILE* ImFileOpen(const char* filename, const char* mode)
 {
 #if defined(_WIN32) && !defined(__CYGWIN__)
@@ -1682,6 +1560,113 @@
 }
 
 //-----------------------------------------------------------------------------
+// COLOR FUNCTIONS
+//-----------------------------------------------------------------------------
+
+ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
+{
+    float s = 1.0f/255.0f;
+    return ImVec4(
+        ((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
+}
+
+ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
+{
+    ImU32 out;
+    out  = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
+    return out;
+}
+
+// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
+// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
+void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
+{
+    float K = 0.f;
+    if (g < b)
+    {
+        ImSwap(g, b);
+        K = -1.f;
+    }
+    if (r < g)
+    {
+        ImSwap(r, g);
+        K = -2.f / 6.f - K;
+    }
+
+    const float chroma = r - (g < b ? g : b);
+    out_h = ImFabs(K + (g - b) / (6.f * chroma + 1e-20f));
+    out_s = chroma / (r + 1e-20f);
+    out_v = r;
+}
+
+// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
+// also http://en.wikipedia.org/wiki/HSL_and_HSV
+void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
+{
+    if (s == 0.0f)
+    {
+        // gray
+        out_r = out_g = out_b = v;
+        return;
+    }
+
+    h = ImFmod(h, 1.0f) / (60.0f/360.0f);
+    int   i = (int)h;
+    float f = h - (float)i;
+    float p = v * (1.0f - s);
+    float q = v * (1.0f - s * f);
+    float t = v * (1.0f - s * (1.0f - f));
+
+    switch (i)
+    {
+    case 0: out_r = v; out_g = t; out_b = p; break;
+    case 1: out_r = q; out_g = v; out_b = p; break;
+    case 2: out_r = p; out_g = v; out_b = t; break;
+    case 3: out_r = p; out_g = q; out_b = v; break;
+    case 4: out_r = t; out_g = p; out_b = v; break;
+    case 5: default: out_r = v; out_g = p; out_b = q; break;
+    }
+}
+
+ImU32 ImGui::GetColorU32(ImGuiCol idx, float alpha_mul)
+{
+    ImGuiStyle& style = GImGui->Style;
+    ImVec4 c = style.Colors[idx];
+    c.w *= style.Alpha * alpha_mul;
+    return ColorConvertFloat4ToU32(c);
+}
+
+ImU32 ImGui::GetColorU32(const ImVec4& col)
+{
+    ImGuiStyle& style = GImGui->Style;
+    ImVec4 c = col;
+    c.w *= style.Alpha;
+    return ColorConvertFloat4ToU32(c);
+}
+
+const ImVec4& ImGui::GetStyleColorVec4(ImGuiCol idx)
+{
+    ImGuiStyle& style = GImGui->Style;
+    return style.Colors[idx];
+}
+
+ImU32 ImGui::GetColorU32(ImU32 col)
+{
+    float style_alpha = GImGui->Style.Alpha;
+    if (style_alpha >= 1.0f)
+        return col;
+    ImU32 a = (col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT;
+    a = (ImU32)(a * style_alpha); // We don't need to clamp 0..255 because Style.Alpha is in 0..1 range.
+    return (col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
+}
+
+//-----------------------------------------------------------------------------
 // ImGuiStorage
 // Helper: Key->value storage
 //-----------------------------------------------------------------------------
@@ -1983,51 +1968,6 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImGuiSimpleColumns (internal use only)
-//-----------------------------------------------------------------------------
-
-ImGuiMenuColumns::ImGuiMenuColumns()
-{
-    Count = 0;
-    Spacing = Width = NextWidth = 0.0f;
-    memset(Pos, 0, sizeof(Pos));
-    memset(NextWidths, 0, sizeof(NextWidths));
-}
-
-void ImGuiMenuColumns::Update(int count, float spacing, bool clear)
-{
-    IM_ASSERT(Count <= IM_ARRAYSIZE(Pos));
-    Count = count;
-    Width = NextWidth = 0.0f;
-    Spacing = spacing;
-    if (clear) memset(NextWidths, 0, sizeof(NextWidths));
-    for (int i = 0; i < Count; i++)
-    {
-        if (i > 0 && NextWidths[i] > 0.0f)
-            Width += Spacing;
-        Pos[i] = (float)(int)Width;
-        Width += NextWidths[i];
-        NextWidths[i] = 0.0f;
-    }
-}
-
-float ImGuiMenuColumns::DeclColumns(float w0, float w1, float w2) // not using va_arg because they promote float to double
-{
-    NextWidth = 0.0f;
-    NextWidths[0] = ImMax(NextWidths[0], w0);
-    NextWidths[1] = ImMax(NextWidths[1], w1);
-    NextWidths[2] = ImMax(NextWidths[2], w2);
-    for (int i = 0; i < 3; i++)
-        NextWidth += NextWidths[i] + ((i > 0 && NextWidths[i] > 0.0f) ? Spacing : 0.0f);
-    return ImMax(Width, NextWidth);
-}
-
-float ImGuiMenuColumns::CalcExtraSpace(float avail_w)
-{
-    return ImMax(0.0f, avail_w - Width);
-}
-
-//-----------------------------------------------------------------------------
 // ImGuiListClipper
 //-----------------------------------------------------------------------------
 
@@ -2112,9 +2052,11 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImGuiWindow
+// MAIN CODE
+// (this category is still too large and badly ordered, needs some tidying up)
 //-----------------------------------------------------------------------------
 
+// ImGuiWindow is mostly a dumb struct. It merely has a constructor and a few helper methods
 ImGuiWindow::ImGuiWindow(ImGuiContext* context, const char* name)
     : DrawListInst(&context->DrawListSharedData)
 {
@@ -2222,10 +2164,6 @@
     return id;
 }
 
-//-----------------------------------------------------------------------------
-// Internal API exposed in imgui_internal.h
-//-----------------------------------------------------------------------------
-
 static void SetCurrentWindow(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -2393,285 +2331,6 @@
     ItemSize(bb.GetSize(), text_offset_y);
 }
 
-static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
-{
-    if (ImFabs(dx) > ImFabs(dy))
-        return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
-    return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
-}
-
-static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
-{
-    if (a1 < b0)
-        return a1 - b0;
-    if (b1 < a0)
-        return a0 - b1;
-    return 0.0f;
-}
-
-static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
-{
-    if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
-    {
-        r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
-        r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
-    }
-    else
-    {
-        r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
-        r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
-    }
-}
-
-// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
-static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    if (g.NavLayer != window->DC.NavLayerCurrent)
-        return false;
-
-    const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
-    g.NavScoringCount++;
-
-    // When entering through a NavFlattened border, we consider child window items as fully clipped for scoring
-    if (window->ParentWindow == g.NavWindow)
-    {
-        IM_ASSERT((window->Flags | g.NavWindow->Flags) & ImGuiWindowFlags_NavFlattened);
-        if (!window->ClipRect.Contains(cand))
-            return false;
-        cand.ClipWithFull(window->ClipRect); // This allows the scored item to not overlap other candidates in the parent window
-    }
-
-    // We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
-    // For example, this ensure that items in one column are not reached when moving vertically from items in another column.
-    NavClampRectToVisibleAreaForMoveDir(g.NavMoveClipDir, cand, window->ClipRect);
-
-    // Compute distance between boxes
-    // FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
-    float dbx = NavScoreItemDistInterval(cand.Min.x, cand.Max.x, curr.Min.x, curr.Max.x);
-    float dby = NavScoreItemDistInterval(ImLerp(cand.Min.y, cand.Max.y, 0.2f), ImLerp(cand.Min.y, cand.Max.y, 0.8f), ImLerp(curr.Min.y, curr.Max.y, 0.2f), ImLerp(curr.Min.y, curr.Max.y, 0.8f)); // Scale down on Y to keep using box-distance for vertically touching items
-    if (dby != 0.0f && dbx != 0.0f)
-       dbx = (dbx/1000.0f) + ((dbx > 0.0f) ? +1.0f : -1.0f);
-    float dist_box = ImFabs(dbx) + ImFabs(dby);
-
-    // Compute distance between centers (this is off by a factor of 2, but we only compare center distances with each other so it doesn't matter)
-    float dcx = (cand.Min.x + cand.Max.x) - (curr.Min.x + curr.Max.x);
-    float dcy = (cand.Min.y + cand.Max.y) - (curr.Min.y + curr.Max.y);
-    float dist_center = ImFabs(dcx) + ImFabs(dcy); // L1 metric (need this for our connectedness guarantee)
-
-    // Determine which quadrant of 'curr' our candidate item 'cand' lies in based on distance
-    ImGuiDir quadrant;
-    float dax = 0.0f, day = 0.0f, dist_axial = 0.0f;
-    if (dbx != 0.0f || dby != 0.0f)
-    {
-        // For non-overlapping boxes, use distance between boxes
-        dax = dbx;
-        day = dby;
-        dist_axial = dist_box;
-        quadrant = NavScoreItemGetQuadrant(dbx, dby);
-    }
-    else if (dcx != 0.0f || dcy != 0.0f)
-    {
-        // For overlapping boxes with different centers, use distance between centers
-        dax = dcx;
-        day = dcy;
-        dist_axial = dist_center;
-        quadrant = NavScoreItemGetQuadrant(dcx, dcy);
-    }
-    else
-    {
-        // Degenerate case: two overlapping buttons with same center, break ties arbitrarily (note that LastItemId here is really the _previous_ item order, but it doesn't matter)
-        quadrant = (window->DC.LastItemId < g.NavId) ? ImGuiDir_Left : ImGuiDir_Right;
-    }
-
-#if IMGUI_DEBUG_NAV_SCORING
-    char buf[128];
-    if (ImGui::IsMouseHoveringRect(cand.Min, cand.Max))
-    {
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "dbox (%.2f,%.2f->%.4f)\ndcen (%.2f,%.2f->%.4f)\nd (%.2f,%.2f->%.4f)\nnav %c, quadrant %c", dbx, dby, dist_box, dcx, dcy, dist_center, dax, day, dist_axial, "WENS"[g.NavMoveDir], "WENS"[quadrant]);
-        ImDrawList* draw_list = ImGui::GetOverlayDrawList();
-        draw_list->AddRect(curr.Min, curr.Max, IM_COL32(255,200,0,100));
-        draw_list->AddRect(cand.Min, cand.Max, IM_COL32(255,255,0,200));
-        draw_list->AddRectFilled(cand.Max-ImVec2(4,4), cand.Max+ImGui::CalcTextSize(buf)+ImVec2(4,4), IM_COL32(40,0,0,150));
-        draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Max, ~0U, buf);
-    }
-    else if (g.IO.KeyCtrl) // Hold to preview score in matching quadrant. Press C to rotate.
-    {
-        if (IsKeyPressedMap(ImGuiKey_C)) { g.NavMoveDirLast = (ImGuiDir)((g.NavMoveDirLast + 1) & 3); g.IO.KeysDownDuration[g.IO.KeyMap[ImGuiKey_C]] = 0.01f; }
-        if (quadrant == g.NavMoveDir)
-        {
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "%.0f/%.0f", dist_box, dist_center);
-            ImDrawList* draw_list = ImGui::GetOverlayDrawList();
-            draw_list->AddRectFilled(cand.Min, cand.Max, IM_COL32(255, 0, 0, 200));
-            draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Min, IM_COL32(255, 255, 255, 255), buf);
-        }
-    }
- #endif
-
-    // Is it in the quadrant we're interesting in moving to?
-    bool new_best = false;
-    if (quadrant == g.NavMoveDir)
-    {
-        // Does it beat the current best candidate?
-        if (dist_box < result->DistBox)
-        {
-            result->DistBox = dist_box;
-            result->DistCenter = dist_center;
-            return true;
-        }
-        if (dist_box == result->DistBox)
-        {
-            // Try using distance between center points to break ties
-            if (dist_center < result->DistCenter)
-            {
-                result->DistCenter = dist_center;
-                new_best = true;
-            }
-            else if (dist_center == result->DistCenter)
-            {
-                // Still tied! we need to be extra-careful to make sure everything gets linked properly. We consistently break ties by symbolically moving "later" items
-                // (with higher index) to the right/downwards by an infinitesimal amount since we the current "best" button already (so it must have a lower index),
-                // this is fairly easy. This rule ensures that all buttons with dx==dy==0 will end up being linked in order of appearance along the x axis.
-                if (((g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down) ? dby : dbx) < 0.0f) // moving bj to the right/down decreases distance
-                    new_best = true;
-            }
-        }
-    }
-
-    // Axial check: if 'curr' has no link at all in some direction and 'cand' lies roughly in that direction, add a tentative link. This will only be kept if no "real" matches
-    // are found, so it only augments the graph produced by the above method using extra links. (important, since it doesn't guarantee strong connectedness)
-    // This is just to avoid buttons having no links in a particular direction when there's a suitable neighbor. you get good graphs without this too.
-    // 2017/09/29: FIXME: This now currently only enabled inside menu bars, ideally we'd disable it everywhere. Menus in particular need to catch failure. For general navigation it feels awkward.
-    // Disabling it may lead to disconnected graphs when nodes are very spaced out on different axis. Perhaps consider offering this as an option?
-    if (result->DistBox == FLT_MAX && dist_axial < result->DistAxial)  // Check axial match
-        if (g.NavLayer == 1 && !(g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
-            if ((g.NavMoveDir == ImGuiDir_Left && dax < 0.0f) || (g.NavMoveDir == ImGuiDir_Right && dax > 0.0f) || (g.NavMoveDir == ImGuiDir_Up && day < 0.0f) || (g.NavMoveDir == ImGuiDir_Down && day > 0.0f))
-            {
-                result->DistAxial = dist_axial;
-                new_best = true;
-            }
-
-    return new_best;
-}
-
-static void NavSaveLastChildNavWindow(ImGuiWindow* child_window)
-{
-    ImGuiWindow* parent_window = child_window;
-    while (parent_window && (parent_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (parent_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
-        parent_window = parent_window->ParentWindow;
-    if (parent_window && parent_window != child_window)
-        parent_window->NavLastChildNavWindow = child_window;
-}
-
-// Call when we are expected to land on Layer 0 after FocusWindow()
-static ImGuiWindow* NavRestoreLastChildNavWindow(ImGuiWindow* window)
-{
-    return window->NavLastChildNavWindow ? window->NavLastChildNavWindow : window;
-}
-
-static void NavRestoreLayer(int layer)
-{
-    ImGuiContext& g = *GImGui;
-    g.NavLayer = layer;
-    if (layer == 0)
-        g.NavWindow = NavRestoreLastChildNavWindow(g.NavWindow);
-    if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
-        ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
-    else
-        ImGui::NavInitWindow(g.NavWindow, true);
-}
-
-static inline void NavUpdateAnyRequestFlag()
-{
-    ImGuiContext& g = *GImGui;
-    g.NavAnyRequest = g.NavMoveRequest || g.NavInitRequest || (IMGUI_DEBUG_NAV_SCORING && g.NavWindow != NULL);
-    if (g.NavAnyRequest)
-        IM_ASSERT(g.NavWindow != NULL);
-}
-
-bool ImGui::NavMoveRequestButNoResultYet()
-{
-    ImGuiContext& g = *GImGui;
-    return g.NavMoveRequest && g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0;
-}
-
-void ImGui::NavMoveRequestCancel()
-{
-    ImGuiContext& g = *GImGui;
-    g.NavMoveRequest = false;
-    NavUpdateAnyRequestFlag();
-}
-
-// We get there when either NavId == id, or when g.NavAnyRequest is set (which is updated by NavUpdateAnyRequestFlag above)
-static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    //if (!g.IO.NavActive)  // [2017/10/06] Removed this possibly redundant test but I am not sure of all the side-effects yet. Some of the feature here will need to work regardless of using a _NoNavInputs flag.
-    //    return;
-
-    const ImGuiItemFlags item_flags = window->DC.ItemFlags;
-    const ImRect nav_bb_rel(nav_bb.Min - window->Pos, nav_bb.Max - window->Pos);
-
-    // Process Init Request
-    if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
-    {
-        // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
-        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
-        {
-            g.NavInitResultId = id;
-            g.NavInitResultRectRel = nav_bb_rel;
-        }
-        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
-        {
-            g.NavInitRequest = false; // Found a match, clear request
-            NavUpdateAnyRequestFlag();
-        }
-    }
-
-    // Process Move Request (scoring for navigation)
-    // FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
-    if ((g.NavId != id || (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AllowCurrentNavId)) && !(item_flags & ImGuiItemFlags_NoNav))
-    {
-        ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
-#if IMGUI_DEBUG_NAV_SCORING
-        // [DEBUG] Score all items in NavWindow at all times
-        if (!g.NavMoveRequest)
-            g.NavMoveDir = g.NavMoveDirLast;
-        bool new_best = NavScoreItem(result, nav_bb) && g.NavMoveRequest;
-#else
-        bool new_best = g.NavMoveRequest && NavScoreItem(result, nav_bb);
-#endif
-        if (new_best)
-        {
-            result->ID = id;
-            result->Window = window;
-            result->RectRel = nav_bb_rel;
-        }
-
-        const float VISIBLE_RATIO = 0.70f;
-        if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
-            if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
-                if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
-                {
-                    result = &g.NavMoveResultLocalVisibleSet;
-                    result->ID = id;
-                    result->Window = window;
-                    result->RectRel = nav_bb_rel;
-                }
-    }
-
-    // Update window-relative bounding box of navigated item
-    if (g.NavId == id)
-    {
-        g.NavWindow = window;                                           // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
-        g.NavLayer = window->DC.NavLayerCurrent;
-        g.NavIdIsAlive = true;
-        g.NavIdTabCounter = window->FocusIdxTabCounter;
-        window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel;    // Store item bounding box (relative to window position)
-    }
-}
-
 // Declare item bounding box for clipping and interaction.
 // Note that the size can be different than the one provided to ItemSize(). Typically, widgets that spread over available surface
 // declare their minimum size requirement to ItemSize() and then use a larger region for drawing/interaction, which is passed to ItemAdd().
@@ -2972,662 +2631,6 @@
     return &GImGui->DrawListSharedData;
 }
 
-// This needs to be called before we submit any widget (aka in or before Begin)
-void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(window == g.NavWindow);
-    bool init_for_nav = false;
-    if (!(window->Flags & ImGuiWindowFlags_NoNavInputs))
-        if (!(window->Flags & ImGuiWindowFlags_ChildWindow) || (window->Flags & ImGuiWindowFlags_Popup) || (window->NavLastIds[0] == 0) || force_reinit)
-            init_for_nav = true;
-    if (init_for_nav)
-    {
-        SetNavID(0, g.NavLayer);
-        g.NavInitRequest = true;
-        g.NavInitRequestFromMove = false;
-        g.NavInitResultId = 0;
-        g.NavInitResultRectRel = ImRect();
-        NavUpdateAnyRequestFlag();
-    }
-    else
-    {
-        g.NavId = window->NavLastIds[0];
-    }
-}
-
-static ImVec2 NavCalcPreferredRefPos()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow)
-        return ImFloor(g.IO.MousePos);
-
-    // When navigation is active and mouse is disabled, decide on an arbitrary position around the bottom left of the currently navigated item
-    const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
-    ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x*4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
-    ImRect visible_rect = GetViewportRect();
-    return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
-}
-
-static int FindWindowIndex(ImGuiWindow* window) // FIXME-OPT O(N)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = g.Windows.Size-1; i >= 0; i--)
-        if (g.Windows[i] == window)
-            return i;
-    return -1;
-}
-
-static ImGuiWindow* FindWindowNavFocusable(int i_start, int i_stop, int dir) // FIXME-OPT O(N)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = i_start; i >= 0 && i < g.Windows.Size && i != i_stop; i += dir)
-        if (ImGui::IsWindowNavFocusable(g.Windows[i]))
-            return g.Windows[i];
-    return NULL;
-}
-
-float ImGui::GetNavInputAmount(ImGuiNavInput n, ImGuiInputReadMode mode)
-{
-    ImGuiContext& g = *GImGui;
-    if (mode == ImGuiInputReadMode_Down)
-        return g.IO.NavInputs[n];                         // Instant, read analog input (0.0f..1.0f, as provided by user)
-
-    const float t = g.IO.NavInputsDownDuration[n];
-    if (t < 0.0f && mode == ImGuiInputReadMode_Released)  // Return 1.0f when just released, no repeat, ignore analog input.
-        return (g.IO.NavInputsDownDurationPrev[n] >= 0.0f ? 1.0f : 0.0f);
-    if (t < 0.0f)
-        return 0.0f;
-    if (mode == ImGuiInputReadMode_Pressed)               // Return 1.0f when just pressed, no repeat, ignore analog input.
-        return (t == 0.0f) ? 1.0f : 0.0f;
-    if (mode == ImGuiInputReadMode_Repeat)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
-    if (mode == ImGuiInputReadMode_RepeatSlow)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 1.00f, g.IO.KeyRepeatRate * 2.00f);
-    if (mode == ImGuiInputReadMode_RepeatFast)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.30f);
-    return 0.0f;
-}
-
-ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor, float fast_factor)
-{
-    ImVec2 delta(0.0f, 0.0f);
-    if (dir_sources & ImGuiNavDirSourceFlags_Keyboard)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_KeyRight_, mode)   - GetNavInputAmount(ImGuiNavInput_KeyLeft_,   mode), GetNavInputAmount(ImGuiNavInput_KeyDown_,   mode) - GetNavInputAmount(ImGuiNavInput_KeyUp_,   mode));
-    if (dir_sources & ImGuiNavDirSourceFlags_PadDPad)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_DpadRight, mode)   - GetNavInputAmount(ImGuiNavInput_DpadLeft,   mode), GetNavInputAmount(ImGuiNavInput_DpadDown,   mode) - GetNavInputAmount(ImGuiNavInput_DpadUp,   mode));
-    if (dir_sources & ImGuiNavDirSourceFlags_PadLStick)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_LStickRight, mode) - GetNavInputAmount(ImGuiNavInput_LStickLeft, mode), GetNavInputAmount(ImGuiNavInput_LStickDown, mode) - GetNavInputAmount(ImGuiNavInput_LStickUp, mode));
-    if (slow_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakSlow))
-        delta *= slow_factor;
-    if (fast_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakFast))
-        delta *= fast_factor;
-    return delta;
-}
-
-static void NavUpdateWindowingHighlightWindow(int focus_change_dir)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavWindowingTarget);
-    if (g.NavWindowingTarget->Flags & ImGuiWindowFlags_Modal)
-        return;
-
-    const int i_current = FindWindowIndex(g.NavWindowingTarget);
-    ImGuiWindow* window_target = FindWindowNavFocusable(i_current + focus_change_dir, -INT_MAX, focus_change_dir);
-    if (!window_target)
-        window_target = FindWindowNavFocusable((focus_change_dir < 0) ? (g.Windows.Size - 1) : 0, i_current, focus_change_dir);
-    if (window_target) // Don't reset windowing target if there's a single window in the list
-        g.NavWindowingTarget = g.NavWindowingTargetAnim = window_target;
-    g.NavWindowingToggleLayer = false;
-}
-
-// Window management mode (hold to: change focus/move/resize, tap to: toggle menu layer)
-static void ImGui::NavUpdateWindowing()
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* apply_focus_window = NULL;
-    bool apply_toggle_layer = false;
-
-    ImGuiWindow* modal_window = GetFrontMostPopupModal();
-    if (modal_window != NULL)
-    {
-        g.NavWindowingTarget = NULL;
-        return;
-    }
-
-    // Fade out
-    if (g.NavWindowingTargetAnim && g.NavWindowingTarget == NULL)
-    {
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha - g.IO.DeltaTime * 10.0f, 0.0f);
-        if (g.DimBgRatio <= 0.0f && g.NavWindowingHighlightAlpha <= 0.0f)
-            g.NavWindowingTargetAnim = NULL;
-    }
-
-    // Start CTRL-TAB or Square+L/R window selection
-    bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
-    bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
-    if (start_windowing_with_gamepad || start_windowing_with_keyboard)
-        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.Windows.Size - 1, -INT_MAX, -1))
-        {
-            g.NavWindowingTarget = g.NavWindowingTargetAnim = window;
-            g.NavWindowingTimer = g.NavWindowingHighlightAlpha = 0.0f;
-            g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
-            g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
-        }
-
-    // Gamepad update
-    g.NavWindowingTimer += g.IO.DeltaTime;
-    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavGamepad)
-    {
-        // Highlight only appears after a brief time holding the button, so that a fast tap on PadMenu (to toggle NavLayer) doesn't add visual noise
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f));
-
-        // Select window to focus
-        const int focus_change_dir = (int)IsNavInputPressed(ImGuiNavInput_FocusPrev, ImGuiInputReadMode_RepeatSlow) - (int)IsNavInputPressed(ImGuiNavInput_FocusNext, ImGuiInputReadMode_RepeatSlow);
-        if (focus_change_dir != 0)
-        {
-            NavUpdateWindowingHighlightWindow(focus_change_dir);
-            g.NavWindowingHighlightAlpha = 1.0f;
-        }
-
-        // Single press toggles NavLayer, long press with L/R apply actual focus on release (until then the window was merely rendered front-most)
-        if (!IsNavInputDown(ImGuiNavInput_Menu))
-        {
-            g.NavWindowingToggleLayer &= (g.NavWindowingHighlightAlpha < 1.0f); // Once button was held long enough we don't consider it a tap-to-toggle-layer press anymore.
-            if (g.NavWindowingToggleLayer && g.NavWindow)
-                apply_toggle_layer = true;
-            else if (!g.NavWindowingToggleLayer)
-                apply_focus_window = g.NavWindowingTarget;
-            g.NavWindowingTarget = NULL;
-        }
-    }
-
-    // Keyboard: Focus
-    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavKeyboard)
-    {
-        // Visuals only appears after a brief time after pressing TAB the first time, so that a fast CTRL+TAB doesn't add visual noise
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f)); // 1.0f
-        if (IsKeyPressedMap(ImGuiKey_Tab, true))
-            NavUpdateWindowingHighlightWindow(g.IO.KeyShift ? +1 : -1);
-        if (!g.IO.KeyCtrl)
-            apply_focus_window = g.NavWindowingTarget;
-    }
-
-    // Keyboard: Press and Release ALT to toggle menu layer
-    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
-    if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && IsNavInputPressed(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))
-        if (IsMousePosValid(&g.IO.MousePos) == IsMousePosValid(&g.IO.MousePosPrev))
-            apply_toggle_layer = true;
-
-    // Move window
-    if (g.NavWindowingTarget && !(g.NavWindowingTarget->Flags & ImGuiWindowFlags_NoMove))
-    {
-        ImVec2 move_delta;
-        if (g.NavInputSource == ImGuiInputSource_NavKeyboard && !g.IO.KeyShift)
-            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard, ImGuiInputReadMode_Down);
-        if (g.NavInputSource == ImGuiInputSource_NavGamepad)
-            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down);
-        if (move_delta.x != 0.0f || move_delta.y != 0.0f)
-        {
-            const float NAV_MOVE_SPEED = 800.0f;
-            const float move_speed = ImFloor(NAV_MOVE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); // FIXME: Doesn't code variable framerate very well
-            g.NavWindowingTarget->RootWindow->Pos += move_delta * move_speed;
-            g.NavDisableMouseHover = true;
-            MarkIniSettingsDirty(g.NavWindowingTarget);
-        }
-    }
-
-    // Apply final focus
-    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
-    {
-        g.NavDisableHighlight = false;
-        g.NavDisableMouseHover = true;
-        apply_focus_window = NavRestoreLastChildNavWindow(apply_focus_window);
-        ClosePopupsOverWindow(apply_focus_window);
-        FocusWindow(apply_focus_window);
-        if (apply_focus_window->NavLastIds[0] == 0)
-            NavInitWindow(apply_focus_window, false);
-
-        // If the window only has a menu layer, select it directly
-        if (apply_focus_window->DC.NavLayerActiveMask == (1 << 1))
-            g.NavLayer = 1;
-    }
-    if (apply_focus_window)
-        g.NavWindowingTarget = NULL;
-
-    // Apply menu/layer toggle
-    if (apply_toggle_layer && g.NavWindow)
-    {
-        // Move to parent menu if necessary
-        ImGuiWindow* new_nav_window = g.NavWindow;
-        while ((new_nav_window->DC.NavLayerActiveMask & (1 << 1)) == 0 && (new_nav_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (new_nav_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
-            new_nav_window = new_nav_window->ParentWindow;
-
-        if (new_nav_window != g.NavWindow)
-        {
-            ImGuiWindow* old_nav_window = g.NavWindow;
-            FocusWindow(new_nav_window);
-            new_nav_window->NavLastChildNavWindow = old_nav_window;
-        }
-        g.NavDisableHighlight = false;
-        g.NavDisableMouseHover = true;
-        NavRestoreLayer((g.NavWindow->DC.NavLayerActiveMask & (1 << 1)) ? (g.NavLayer ^ 1) : 0);
-    }
-}
-
-// Window has already passed the IsWindowNavFocusable()
-static const char* GetFallbackWindowNameForWindowingList(ImGuiWindow* window)
-{
-    if (window->Flags & ImGuiWindowFlags_Popup)
-        return "(Popup)";
-    if ((window->Flags & ImGuiWindowFlags_MenuBar) && strcmp(window->Name, "##MainMenuBar") == 0)
-        return "(Main menu bar)";
-    return "(Untitled)";
-}
-
-// Overlay displayed when using CTRL+TAB. Called by EndFrame().
-void ImGui::NavUpdateWindowingList()
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavWindowingTarget != NULL);
-
-    if (g.NavWindowingTimer < NAV_WINDOWING_LIST_APPEAR_DELAY)
-        return;
-
-    if (g.NavWindowingList == NULL)
-        g.NavWindowingList = FindWindowByName("###NavWindowingList");
-    SetNextWindowSizeConstraints(ImVec2(g.IO.DisplaySize.x * 0.20f, g.IO.DisplaySize.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
-    SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
-    PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
-    Begin("###NavWindowingList", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings);
-    for (int n = g.Windows.Size - 1; n >= 0; n--)
-    {
-        ImGuiWindow* window = g.Windows[n];
-        if (!IsWindowNavFocusable(window))
-            continue;
-        const char* label = window->Name;
-        if (label == FindRenderedTextEnd(label))
-            label = GetFallbackWindowNameForWindowingList(window);
-        Selectable(label, g.NavWindowingTarget == window);
-    }
-    End();
-    PopStyleVar();
-}
-
-// Scroll to keep newly navigated item fully into view
-// NB: We modify rect_rel by the amount we scrolled for, so it is immediately updated.
-static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item_rect)
-{
-    ImRect window_rect(window->InnerMainRect.Min - ImVec2(1, 1), window->InnerMainRect.Max + ImVec2(1, 1));
-    //g.OverlayDrawList.AddRect(window_rect.Min, window_rect.Max, IM_COL32_WHITE); // [DEBUG]
-    if (window_rect.Contains(item_rect))
-        return;
-
-    ImGuiContext& g = *GImGui;
-    if (window->ScrollbarX && item_rect.Min.x < window_rect.Min.x)
-    {
-        window->ScrollTarget.x = item_rect.Min.x - window->Pos.x + window->Scroll.x - g.Style.ItemSpacing.x;
-        window->ScrollTargetCenterRatio.x = 0.0f;
-    }
-    else if (window->ScrollbarX && item_rect.Max.x >= window_rect.Max.x)
-    {
-        window->ScrollTarget.x = item_rect.Max.x - window->Pos.x + window->Scroll.x + g.Style.ItemSpacing.x;
-        window->ScrollTargetCenterRatio.x = 1.0f;
-    }
-    if (item_rect.Min.y < window_rect.Min.y)
-    {
-        window->ScrollTarget.y = item_rect.Min.y - window->Pos.y + window->Scroll.y - g.Style.ItemSpacing.y;
-        window->ScrollTargetCenterRatio.y = 0.0f;
-    }
-    else if (item_rect.Max.y >= window_rect.Max.y)
-    {
-        window->ScrollTarget.y = item_rect.Max.y - window->Pos.y + window->Scroll.y + g.Style.ItemSpacing.y;
-        window->ScrollTargetCenterRatio.y = 1.0f;
-    }
-}
-
-static void ImGui::NavUpdate()
-{
-    ImGuiContext& g = *GImGui;
-    g.IO.WantSetMousePos = false;
-
-#if 0
-    if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
-#endif
-
-    bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
-    bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
-
-    // Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
-    if (nav_gamepad_active)
-        if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
-            g.NavInputSource = ImGuiInputSource_NavGamepad;
-
-    // Update Keyboard->Nav inputs mapping
-    if (nav_keyboard_active)
-    {
-        #define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
-        NAV_MAP_KEY(ImGuiKey_Space,     ImGuiNavInput_Activate );
-        NAV_MAP_KEY(ImGuiKey_Enter,     ImGuiNavInput_Input    );
-        NAV_MAP_KEY(ImGuiKey_Escape,    ImGuiNavInput_Cancel   );
-        NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
-        NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
-        NAV_MAP_KEY(ImGuiKey_UpArrow,   ImGuiNavInput_KeyUp_   );
-        NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
-        if (g.IO.KeyCtrl)   g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
-        if (g.IO.KeyShift)  g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
-        if (g.IO.KeyAlt)    g.IO.NavInputs[ImGuiNavInput_KeyMenu_]  = 1.0f;
-        #undef NAV_MAP_KEY
-    }
-
-    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
-    for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
-        g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
-
-    // Process navigation init request (select first/default focus)
-    if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
-    {
-        // Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
-        IM_ASSERT(g.NavWindow);
-        if (g.NavInitRequestFromMove)
-            SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
-        else
-            SetNavID(g.NavInitResultId, g.NavLayer);
-        g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
-    }
-    g.NavInitRequest = false;
-    g.NavInitRequestFromMove = false;
-    g.NavInitResultId = 0;
-    g.NavJustMovedToId = 0;
-
-    // Process navigation move request
-    if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
-    {
-        // Select which result to use
-        ImGuiNavMoveResult* result = (g.NavMoveResultLocal.ID != 0) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
-
-        // PageUp/PageDown behavior first jumps to the bottom/top mostly visible item, _otherwise_ use the result from the previous/next page.
-        if (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet)
-            if (g.NavMoveResultLocalVisibleSet.ID != 0 && g.NavMoveResultLocalVisibleSet.ID != g.NavId)
-                result = &g.NavMoveResultLocalVisibleSet;
-
-        // Maybe entering a flattened child from the outside? In this case solve the tie using the regular scoring rules.
-        if (result != &g.NavMoveResultOther && g.NavMoveResultOther.ID != 0 && g.NavMoveResultOther.Window->ParentWindow == g.NavWindow)
-            if ((g.NavMoveResultOther.DistBox < result->DistBox) || (g.NavMoveResultOther.DistBox == result->DistBox && g.NavMoveResultOther.DistCenter < result->DistCenter))
-                result = &g.NavMoveResultOther;
-        IM_ASSERT(g.NavWindow && result->Window);
-
-        // Scroll to keep newly navigated item fully into view.
-        if (g.NavLayer == 0)
-        {
-            ImRect rect_abs = ImRect(result->RectRel.Min + result->Window->Pos, result->RectRel.Max + result->Window->Pos);
-            NavScrollToBringItemIntoView(result->Window, rect_abs);
-
-            // Estimate upcoming scroll so we can offset our result position so mouse position can be applied immediately after in NavUpdate()
-            ImVec2 next_scroll = CalcNextScrollFromScrollTargetAndClamp(result->Window, false);
-            ImVec2 delta_scroll = result->Window->Scroll - next_scroll;
-            result->RectRel.Translate(delta_scroll);
-
-            // Also scroll parent window to keep us into view if necessary (we could/should technically recurse back the whole the parent hierarchy).
-            if (result->Window->Flags & ImGuiWindowFlags_ChildWindow)
-                NavScrollToBringItemIntoView(result->Window->ParentWindow, ImRect(rect_abs.Min + delta_scroll, rect_abs.Max + delta_scroll));
-        }
-
-        // Apply result from previous frame navigation directional move request
-        ClearActiveID();
-        g.NavWindow = result->Window;
-        SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
-        g.NavJustMovedToId = result->ID;
-        g.NavMoveFromClampedRefRect = false;
-    }
-
-    // When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
-    if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
-    {
-        IM_ASSERT(g.NavMoveRequest);
-        if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
-            g.NavDisableHighlight = false;
-        g.NavMoveRequestForward = ImGuiNavForward_None;
-    }
-
-    // Apply application mouse position movement, after we had a chance to process move request result.
-    if (g.NavMousePosDirty && g.NavIdIsAlive)
-    {
-        // Set mouse position given our knowledge of the navigated item position from last frame
-        if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
-        {
-            if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
-            {
-                g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
-                g.IO.WantSetMousePos = true;
-            }
-        }
-        g.NavMousePosDirty = false;
-    }
-    g.NavIdIsAlive = false;
-    g.NavJustTabbedId = 0;
-    IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
-
-    // Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
-    if (g.NavWindow)
-        NavSaveLastChildNavWindow(g.NavWindow);
-    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
-        g.NavWindow->NavLastChildNavWindow = NULL;
-
-    NavUpdateWindowing();
-
-    // Set output flags for user application
-    g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
-    g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
-
-    // Process NavCancel input (to close a popup, get back to parent, clear focus)
-    if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
-    {
-        if (g.ActiveId != 0)
-        {
-            ClearActiveID();
-        }
-        else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
-        {
-            // Exit child window
-            ImGuiWindow* child_window = g.NavWindow;
-            ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
-            IM_ASSERT(child_window->ChildId != 0);
-            FocusWindow(parent_window);
-            SetNavID(child_window->ChildId, 0);
-            g.NavIdIsAlive = false;
-            if (g.NavDisableMouseHover)
-                g.NavMousePosDirty = true;
-        }
-        else if (g.OpenPopupStack.Size > 0)
-        {
-            // Close open popup/menu
-            if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
-                ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-        }
-        else if (g.NavLayer != 0)
-        {
-            // Leave the "menu" layer
-            NavRestoreLayer(0);
-        }
-        else
-        {
-            // Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
-            if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
-                g.NavWindow->NavLastIds[0] = 0;
-            g.NavId = 0;
-        }
-    }
-
-    // Process manual activation request
-    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
-    if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-    {
-        bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
-        bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
-        if (g.ActiveId == 0 && activate_pressed)
-            g.NavActivateId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
-            g.NavActivateDownId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
-            g.NavActivatePressedId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
-            g.NavInputId = g.NavId;
-    }
-    if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-        g.NavDisableHighlight = true;
-    if (g.NavActivateId != 0)
-        IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
-    g.NavMoveRequest = false;
-
-    // Process programmatic activation request
-    if (g.NavNextActivateId != 0)
-        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
-    g.NavNextActivateId = 0;
-
-    // Initiate directional inputs request
-    const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
-    if (g.NavMoveRequestForward == ImGuiNavForward_None)
-    {
-        g.NavMoveDir = ImGuiDir_None;
-        g.NavMoveRequestFlags = 0;
-        if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-        {
-            if ((allowed_dir_flags & (1<<ImGuiDir_Left))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Up))    && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp,   ImGuiNavInput_KeyUp_,   ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Down))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
-        }
-        g.NavMoveClipDir = g.NavMoveDir;
-    }
-    else
-    {
-        // Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
-        // (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
-        IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
-        IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
-        g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
-    }
-
-    // PageUp/PageDown scroll
-    float nav_scoring_rect_offset_y = 0.0f;
-    if (nav_keyboard_active && g.NavMoveDir == ImGuiDir_None && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget && g.NavLayer == 0)
-    {
-        ImGuiWindow* window = g.NavWindow;
-        bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && (allowed_dir_flags & (1 << ImGuiDir_Up));
-        bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && (allowed_dir_flags & (1 << ImGuiDir_Down));
-        if ((page_up_held && !page_down_held) || (page_down_held && !page_up_held))
-        {
-            if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
-            {
-                // Fallback manual-scroll when window has no navigable item
-                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
-                    SetWindowScrollY(window, window->Scroll.y - window->InnerClipRect.GetHeight());
-                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
-                    SetWindowScrollY(window, window->Scroll.y + window->InnerClipRect.GetHeight());
-            }
-            else
-            {
-                const ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
-                const float page_offset_y = ImMax(0.0f, window->InnerClipRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
-                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
-                {
-                    nav_scoring_rect_offset_y = -page_offset_y;
-                    g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
-                    g.NavMoveClipDir = ImGuiDir_Up;
-                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
-                }
-                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
-                {
-                    nav_scoring_rect_offset_y = +page_offset_y;
-                    g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
-                    g.NavMoveClipDir = ImGuiDir_Down;
-                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
-                }
-            }
-        }
-    }
-
-    if (g.NavMoveDir != ImGuiDir_None)
-    {
-        g.NavMoveRequest = true;
-        g.NavMoveDirLast = g.NavMoveDir;
-    }
-
-    // If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
-    if (g.NavMoveRequest && g.NavId == 0)
-    {
-        g.NavInitRequest = g.NavInitRequestFromMove = true;
-        g.NavInitResultId = 0;
-        g.NavDisableHighlight = false;
-    }
-
-    NavUpdateAnyRequestFlag();
-
-    // Scrolling
-    if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
-    {
-        // *Fallback* manual-scroll with Nav directional keys when window has no navigable item
-        ImGuiWindow* window = g.NavWindow;
-        const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
-        if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
-        {
-            if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
-                SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
-            if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
-                SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
-        }
-
-        // *Normal* Manual scroll with NavScrollXXX keys
-        // Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
-        ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
-        if (scroll_dir.x != 0.0f && window->ScrollbarX)
-        {
-            SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
-            g.NavMoveFromClampedRefRect = true;
-        }
-        if (scroll_dir.y != 0.0f)
-        {
-            SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
-            g.NavMoveFromClampedRefRect = true;
-        }
-    }
-
-    // Reset search results
-    g.NavMoveResultLocal.Clear();
-    g.NavMoveResultLocalVisibleSet.Clear();
-    g.NavMoveResultOther.Clear();
-
-    // When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
-    if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
-    {
-        ImGuiWindow* window = g.NavWindow;
-        ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
-        if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
-        {
-            float pad = window->CalcFontSize() * 0.5f;
-            window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
-            window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
-            g.NavId = 0;
-        }
-        g.NavMoveFromClampedRefRect = false;
-    }
-
-    // For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
-    ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
-    g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
-    g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
-    g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
-    g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
-    IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
-    //g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
-    g.NavScoringCount = 0;
-#if IMGUI_DEBUG_NAV_RECTS
-    if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
-    if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
-#endif
-}
-
 void ImGui::StartMouseMovingWindow(ImGuiWindow* window)
 {
     // Set ActiveId even if the _NoMove flag is set. Without it, dragging away from a window with _NoMove would activate hover on other windows.
@@ -4010,65 +3013,6 @@
     Begin("Debug##Default");
 }
 
-static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
-{
-    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHash(name, 0));
-    if (!settings)
-        settings = CreateNewWindowSettings(name);
-    return (void*)settings;
-}
-
-static void SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
-{
-    ImGuiWindowSettings* settings = (ImGuiWindowSettings*)entry;
-    float x, y;
-    int i;
-    if (sscanf(line, "Pos=%f,%f", &x, &y) == 2)         settings->Pos = ImVec2(x, y);
-    else if (sscanf(line, "Size=%f,%f", &x, &y) == 2)   settings->Size = ImMax(ImVec2(x, y), GImGui->Style.WindowMinSize);
-    else if (sscanf(line, "Collapsed=%d", &i) == 1)     settings->Collapsed = (i != 0);
-}
-
-static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
-{
-    // Gather data from windows that were active during this session
-    ImGuiContext& g = *imgui_ctx;
-    for (int i = 0; i != g.Windows.Size; i++)
-    {
-        ImGuiWindow* window = g.Windows[i];
-        if (window->Flags & ImGuiWindowFlags_NoSavedSettings)
-            continue;
-
-        ImGuiWindowSettings* settings = (window->SettingsIdx != -1) ? &g.SettingsWindows[window->SettingsIdx] : ImGui::FindWindowSettings(window->ID);
-        if (!settings)
-        {
-            settings = CreateNewWindowSettings(window->Name);
-            window->SettingsIdx = g.SettingsWindows.index_from_pointer(settings);
-        }
-        IM_ASSERT(settings->ID == window->ID);
-        settings->Pos = window->Pos;
-        settings->Size = window->SizeFull;
-        settings->Collapsed = window->Collapsed;
-    }
-
-    // Write a buffer
-    // If a window wasn't opened in this session we preserve its settings
-    buf->reserve(buf->size() + g.SettingsWindows.Size * 96); // ballpark reserve
-    for (int i = 0; i != g.SettingsWindows.Size; i++)
-    {
-        const ImGuiWindowSettings* settings = &g.SettingsWindows[i];
-        if (settings->Pos.x == FLT_MAX)
-            continue;
-        const char* name = settings->Name;
-        if (const char* p = strstr(name, "###"))  // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID()
-            name = p;
-        buf->appendf("[%s][%s]\n", handler->TypeName, name);
-        buf->appendf("Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
-        buf->appendf("Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
-        buf->appendf("Collapsed=%d\n", settings->Collapsed);
-        buf->appendf("\n");
-    }
-}
-
 void ImGui::Initialize(ImGuiContext* context)
 {
     ImGuiContext& g = *context;
@@ -4143,154 +3087,6 @@
     g.Initialized = false;
 }
 
-ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = 0; i != g.SettingsWindows.Size; i++)
-        if (g.SettingsWindows[i].ID == id)
-            return &g.SettingsWindows[i];
-    return NULL;
-}
-
-static ImGuiWindowSettings* CreateNewWindowSettings(const char* name)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsWindows.push_back(ImGuiWindowSettings());
-    ImGuiWindowSettings* settings = &g.SettingsWindows.back();
-    settings->Name = ImStrdup(name);
-    settings->ID = ImHash(name, 0);
-    return settings;
-}
-
-void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
-{
-    size_t file_data_size = 0;
-    char* file_data = (char*)ImFileLoadToMemory(ini_filename, "rb", &file_data_size);
-    if (!file_data)
-        return;
-    LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
-    ImGui::MemFree(file_data);
-}
-
-ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
-{
-    ImGuiContext& g = *GImGui;
-    const ImGuiID type_hash = ImHash(type_name, 0, 0);
-    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
-        if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
-            return &g.SettingsHandlers[handler_n];
-    return NULL;
-}
-
-// Zero-tolerance, no error reporting, cheap .ini parsing
-void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.Initialized);
-    IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
-
-    // For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
-    // For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
-    if (ini_size == 0)
-        ini_size = strlen(ini_data);
-    char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
-    char* buf_end = buf + ini_size;
-    memcpy(buf, ini_data, ini_size);
-    buf[ini_size] = 0;
-
-    void* entry_data = NULL;
-    ImGuiSettingsHandler* entry_handler = NULL;
-
-    char* line_end = NULL;
-    for (char* line = buf; line < buf_end; line = line_end + 1)
-    {
-        // Skip new lines markers, then find end of the line
-        while (*line == '\n' || *line == '\r')
-            line++;
-        line_end = line;
-        while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
-            line_end++;
-        line_end[0] = 0;
-
-        if (line[0] == '[' && line_end > line && line_end[-1] == ']')
-        {
-            // Parse "[Type][Name]". Note that 'Name' can itself contains [] characters, which is acceptable with the current format and parsing code.
-            line_end[-1] = 0;
-            const char* name_end = line_end - 1;
-            const char* type_start = line + 1;
-            char* type_end = (char*)(intptr_t)ImStrchrRange(type_start, name_end, ']');
-            const char* name_start = type_end ? ImStrchrRange(type_end + 1, name_end, '[') : NULL;
-            if (!type_end || !name_start)
-            {
-                name_start = type_start; // Import legacy entries that have no type
-                type_start = "Window";
-            }
-            else
-            {
-                *type_end = 0; // Overwrite first ']'
-                name_start++;  // Skip second '['
-            }
-            entry_handler = FindSettingsHandler(type_start);
-            entry_data = entry_handler ? entry_handler->ReadOpenFn(&g, entry_handler, name_start) : NULL;
-        }
-        else if (entry_handler != NULL && entry_data != NULL)
-        {
-            // Let type handler parse the line
-            entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
-        }
-    }
-    ImGui::MemFree(buf);
-    g.SettingsLoaded = true;
-}
-
-void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsDirtyTimer = 0.0f;
-    if (!ini_filename)
-        return;
-
-    size_t ini_data_size = 0;
-    const char* ini_data = SaveIniSettingsToMemory(&ini_data_size);
-    FILE* f = ImFileOpen(ini_filename, "wt");
-    if (!f)
-        return;
-    fwrite(ini_data, sizeof(char), ini_data_size, f);
-    fclose(f);
-}
-
-// Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer
-const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsDirtyTimer = 0.0f;
-    g.SettingsIniData.Buf.resize(0);
-    g.SettingsIniData.Buf.push_back(0);
-    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
-    {
-        ImGuiSettingsHandler* handler = &g.SettingsHandlers[handler_n];
-        handler->WriteAllFn(&g, handler, &g.SettingsIniData);
-    }
-    if (out_size)
-        *out_size = (size_t)g.SettingsIniData.size();
-    return g.SettingsIniData.c_str();
-}
-
-void ImGui::MarkIniSettingsDirty()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.SettingsDirtyTimer <= 0.0f)
-        g.SettingsDirtyTimer = g.IO.IniSavingRate;
-}
-
-void ImGui::MarkIniSettingsDirty(ImGuiWindow* window)
-{
-    ImGuiContext& g = *GImGui;
-    if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings))
-        if (g.SettingsDirtyTimer <= 0.0f)
-            g.SettingsDirtyTimer = g.IO.IniSavingRate;
-}
-
 // FIXME: Add a more explicit sort order in the window structure.
 static int IMGUI_CDECL ChildWindowComparer(const void* lhs, const void* rhs)
 {
@@ -4588,74 +3384,6 @@
     return text_display_end;
 }
 
-// Pass text data straight to log (without being displayed)
-void ImGui::LogText(const char* fmt, ...)
-{
-    ImGuiContext& g = *GImGui;
-    if (!g.LogEnabled)
-        return;
-
-    va_list args;
-    va_start(args, fmt);
-    if (g.LogFile)
-        vfprintf(g.LogFile, fmt, args);
-    else
-        g.LogClipboard.appendfv(fmt, args);
-    va_end(args);
-}
-
-// Internal version that takes a position to decide on newline placement and pad items according to their depth.
-// We split text into individual lines to add current tree level padding
-void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    if (!text_end)
-        text_end = ImGui::FindRenderedTextEnd(text, text_end);
-
-    const bool log_new_line = ref_pos && (ref_pos->y > window->DC.LogLinePosY + 1);
-    if (ref_pos)
-        window->DC.LogLinePosY = ref_pos->y;
-
-    const char* text_remaining = text;
-    if (g.LogStartDepth > window->DC.TreeDepth)  // Re-adjust padding if we have popped out of our starting depth
-        g.LogStartDepth = window->DC.TreeDepth;
-    const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth);
-    for (;;)
-    {
-        // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry.
-        const char* line_end = text_remaining;
-        while (line_end < text_end)
-            if (*line_end == '\n')
-                break;
-            else
-                line_end++;
-        if (line_end >= text_end)
-            line_end = NULL;
-
-        const bool is_first_line = (text == text_remaining);
-        bool is_last_line = false;
-        if (line_end == NULL)
-        {
-            is_last_line = true;
-            line_end = text_end;
-        }
-        if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
-        {
-            const int char_count = (int)(line_end - text_remaining);
-            if (log_new_line || !is_first_line)
-                ImGui::LogText(IM_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining);
-            else
-                ImGui::LogText(" %.*s", char_count, text_remaining);
-        }
-
-        if (is_last_line)
-            break;
-        text_remaining = line_end + 1;
-    }
-}
-
 // Internal ImGui functions to render text
 // RenderText***() functions calls ImDrawList::AddText() calls ImBitmapFont::RenderText()
 void ImGui::RenderText(ImVec2 pos, const char* text, const char* text_end, bool hide_text_after_hash)
@@ -5257,376 +3985,6 @@
     return ImRect(0.0f, 0.0f, g.IO.DisplaySize.x, g.IO.DisplaySize.y);
 }
 
-// Not exposed publicly as BeginTooltip() because bool parameters are evil. Let's see if other needs arise first.
-void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, bool override_previous_tooltip)
-{
-    ImGuiContext& g = *GImGui;
-    char window_name[16];
-    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
-    if (override_previous_tooltip)
-        if (ImGuiWindow* window = FindWindowByName(window_name))
-            if (window->Active)
-            {
-                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
-                window->Hidden = true;
-                window->HiddenFramesRegular = 1;
-                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
-            }
-    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoInputs|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoNav;
-    Begin(window_name, NULL, flags | extra_flags);
-}
-
-void ImGui::SetTooltipV(const char* fmt, va_list args)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.DragDropWithinSourceOrTarget)
-        BeginTooltip();
-    else
-        BeginTooltipEx(0, true);
-    TextV(fmt, args);
-    EndTooltip();
-}
-
-void ImGui::SetTooltip(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    SetTooltipV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::BeginTooltip()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.DragDropWithinSourceOrTarget)
-    {
-        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
-        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
-        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
-        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
-        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
-        SetNextWindowPos(tooltip_pos);
-        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
-        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
-        BeginTooltipEx(0, true);
-    }
-    else
-    {
-        BeginTooltipEx(0, false);
-    }
-}
-
-void ImGui::EndTooltip()
-{
-    IM_ASSERT(GetCurrentWindowRead()->Flags & ImGuiWindowFlags_Tooltip);   // Mismatched BeginTooltip()/EndTooltip() calls
-    End();
-}
-
-// Mark popup as open (toggle toward open state).
-// Popups are closed when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
-// Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
-// One open popup per level of the popup hierarchy (NB: when assigning we reset the Window member of ImGuiPopupRef to NULL)
-void ImGui::OpenPopupEx(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* parent_window = g.CurrentWindow;
-    int current_stack_size = g.CurrentPopupStack.Size;
-    ImGuiPopupRef popup_ref; // Tagged as new ref as Window will be set back to NULL if we write this into OpenPopupStack.
-    popup_ref.PopupId = id;
-    popup_ref.Window = NULL;
-    popup_ref.ParentWindow = parent_window;
-    popup_ref.OpenFrameCount = g.FrameCount;
-    popup_ref.OpenParentId = parent_window->IDStack.back();
-    popup_ref.OpenMousePos = g.IO.MousePos;
-    popup_ref.OpenPopupPos = NavCalcPreferredRefPos();
-
-    //printf("[%05d] OpenPopupEx(0x%08X)\n", g.FrameCount, id);
-    if (g.OpenPopupStack.Size < current_stack_size + 1)
-    {
-        g.OpenPopupStack.push_back(popup_ref);
-    }
-    else
-    {
-        // Gently handle the user mistakenly calling OpenPopup() every frame. It is a programming mistake! However, if we were to run the regular code path, the ui
-        // would become completely unusable because the popup will always be in hidden-while-calculating-size state _while_ claiming focus. Which would be a very confusing
-        // situation for the programmer. Instead, we silently allow the popup to proceed, it will keep reappearing and the programming error will be more obvious to understand.
-        if (g.OpenPopupStack[current_stack_size].PopupId == id && g.OpenPopupStack[current_stack_size].OpenFrameCount == g.FrameCount - 1)
-        {
-            g.OpenPopupStack[current_stack_size].OpenFrameCount = popup_ref.OpenFrameCount;
-        }
-        else
-        {
-            // Close child popups if any, then flag popup for open/reopen
-            g.OpenPopupStack.resize(current_stack_size + 1);
-            g.OpenPopupStack[current_stack_size] = popup_ref;
-        }
-
-        // When reopening a popup we first refocus its parent, otherwise if its parent is itself a popup it would get closed by ClosePopupsOverWindow().
-        // This is equivalent to what ClosePopupToLevel() does.
-        //if (g.OpenPopupStack[current_stack_size].PopupId == id)
-        //    FocusWindow(parent_window);
-    }
-}
-
-void ImGui::OpenPopup(const char* str_id)
-{
-    ImGuiContext& g = *GImGui;
-    OpenPopupEx(g.CurrentWindow->GetID(str_id));
-}
-
-void ImGui::ClosePopupsOverWindow(ImGuiWindow* ref_window)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.OpenPopupStack.empty())
-        return;
-
-    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
-    // Don't close our own child popup windows.
-    int n = 0;
-    if (ref_window)
-    {
-        for (n = 0; n < g.OpenPopupStack.Size; n++)
-        {
-            ImGuiPopupRef& popup = g.OpenPopupStack[n];
-            if (!popup.Window)
-                continue;
-            IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
-            if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
-                continue;
-
-            // Trim the stack if popups are not direct descendant of the reference window (which is often the NavWindow)
-            bool has_focus = false;
-            for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
-                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
-            if (!has_focus)
-                break;
-        }
-    }
-    if (n < g.OpenPopupStack.Size) // This test is not required but it allows to set a convenient breakpoint on the block below
-        ClosePopupToLevel(n);
-}
-
-ImGuiWindow* ImGui::GetFrontMostPopupModal()
-{
-    ImGuiContext& g = *GImGui;
-    for (int n = g.OpenPopupStack.Size-1; n >= 0; n--)
-        if (ImGuiWindow* popup = g.OpenPopupStack.Data[n].Window)
-            if (popup->Flags & ImGuiWindowFlags_Modal)
-                return popup;
-    return NULL;
-}
-
-void ImGui::ClosePopupToLevel(int remaining)
-{
-    IM_ASSERT(remaining >= 0);
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* focus_window = (remaining > 0) ? g.OpenPopupStack[remaining-1].Window : g.OpenPopupStack[0].ParentWindow;
-    if (g.NavLayer == 0)
-        focus_window = NavRestoreLastChildNavWindow(focus_window);
-    FocusWindow(focus_window);
-    focus_window->DC.NavHideHighlightOneFrame = true;
-    g.OpenPopupStack.resize(remaining);
-}
-
-void ImGui::ClosePopup(ImGuiID id)
-{
-    if (!IsPopupOpen(id))
-        return;
-    ImGuiContext& g = *GImGui;
-    ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-}
-
-// Close the popup we have begin-ed into.
-void ImGui::CloseCurrentPopup()
-{
-    ImGuiContext& g = *GImGui;
-    int popup_idx = g.CurrentPopupStack.Size - 1;
-    if (popup_idx < 0 || popup_idx >= g.OpenPopupStack.Size || g.CurrentPopupStack[popup_idx].PopupId != g.OpenPopupStack[popup_idx].PopupId)
-        return;
-    while (popup_idx > 0 && g.OpenPopupStack[popup_idx].Window && (g.OpenPopupStack[popup_idx].Window->Flags & ImGuiWindowFlags_ChildMenu))
-        popup_idx--;
-    ClosePopupToLevel(popup_idx);
-}
-
-bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (!IsPopupOpen(id))
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-
-    char name[20];
-    if (extra_flags & ImGuiWindowFlags_ChildMenu)
-        ImFormatString(name, IM_ARRAYSIZE(name), "##Menu_%02d", g.CurrentPopupStack.Size);    // Recycle windows based on depth
-    else
-        ImFormatString(name, IM_ARRAYSIZE(name), "##Popup_%08x", id); // Not recycling, so we can close/open during the same frame
-
-    bool is_open = Begin(name, NULL, extra_flags | ImGuiWindowFlags_Popup);
-    if (!is_open) // NB: Begin can return false when the popup is completely clipped (e.g. zero size display)
-        EndPopup();
-
-    return is_open;
-}
-
-bool ImGui::BeginPopup(const char* str_id, ImGuiWindowFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.OpenPopupStack.Size <= g.CurrentPopupStack.Size) // Early out for performance
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-    return BeginPopupEx(g.CurrentWindow->GetID(str_id), flags|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::IsPopupOpen(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == id;
-}
-
-bool ImGui::IsPopupOpen(const char* str_id)
-{
-    ImGuiContext& g = *GImGui;
-    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == g.CurrentWindow->GetID(str_id);
-}
-
-bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    const ImGuiID id = window->GetID(name);
-    if (!IsPopupOpen(id))
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-
-    // Center modal windows by default
-    // FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
-    if (g.NextWindowData.PosCond == 0)
-        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
-
-    bool is_open = Begin(name, p_open, flags | ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
-    if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-    {
-        EndPopup();
-        if (is_open)
-            ClosePopup(id);
-        return false;
-    }
-
-    return is_open;
-}
-
-void ImGui::NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, const ImRect& bb_rel, ImGuiNavMoveFlags move_flags)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_None);
-    ImGui::NavMoveRequestCancel();
-    g.NavMoveDir = move_dir;
-    g.NavMoveClipDir = clip_dir;
-    g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
-    g.NavMoveRequestFlags = move_flags;
-    g.NavWindow->NavRectRel[g.NavLayer] = bb_rel;
-}
-
-void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.NavWindow != window || !NavMoveRequestButNoResultYet() || g.NavMoveRequestForward != ImGuiNavForward_None || g.NavLayer != 0)
-        return;
-    IM_ASSERT(move_flags != 0); // No points calling this with no wrapping
-    ImRect bb_rel = window->NavRectRel[0];
-
-    ImGuiDir clip_dir = g.NavMoveDir;
-    if (g.NavMoveDir == ImGuiDir_Left && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
-    {
-        bb_rel.Min.x = bb_rel.Max.x = ImMax(window->SizeFull.x, window->SizeContents.x) - window->Scroll.x;
-        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(-bb_rel.GetHeight()); clip_dir = ImGuiDir_Up; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Right && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
-    {
-        bb_rel.Min.x = bb_rel.Max.x = -window->Scroll.x;
-        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(+bb_rel.GetHeight()); clip_dir = ImGuiDir_Down; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Up && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
-    {
-        bb_rel.Min.y = bb_rel.Max.y = ImMax(window->SizeFull.y, window->SizeContents.y) - window->Scroll.y;
-        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(-bb_rel.GetWidth()); clip_dir = ImGuiDir_Left; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Down && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
-    {
-        bb_rel.Min.y = bb_rel.Max.y = -window->Scroll.y;
-        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(+bb_rel.GetWidth()); clip_dir = ImGuiDir_Right; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-}
-
-void ImGui::EndPopup()
-{
-    ImGuiContext& g = *GImGui; (void)g;
-    IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup);  // Mismatched BeginPopup()/EndPopup() calls
-    IM_ASSERT(g.CurrentPopupStack.Size > 0);
-
-    // Make all menus and popups wrap around for now, may need to expose that policy.
-    NavMoveRequestTryWrapping(g.CurrentWindow, ImGuiNavMoveFlags_LoopY);
-
-    End();
-}
-
-bool ImGui::OpenPopupOnItemClick(const char* str_id, int mouse_button)
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-    {
-        ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
-        IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
-        OpenPopupEx(id);
-        return true;
-    }
-    return false;
-}
-
-// This is a helper to handle the simplest case of associating one named popup to one given widget.
-// You may want to handle this on user side if you have specific needs (e.g. tweaking IsItemHovered() parameters).
-// You can pass a NULL str_id to use the identifier of the last item.
-bool ImGui::BeginPopupContextItem(const char* str_id, int mouse_button)
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
-    IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
-    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-        OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::BeginPopupContextWindow(const char* str_id, int mouse_button, bool also_over_items)
-{
-    if (!str_id)
-        str_id = "window_context";
-    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
-    if (IsMouseReleased(mouse_button) && IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-        if (also_over_items || !IsAnyItemHovered())
-            OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::BeginPopupContextVoid(const char* str_id, int mouse_button)
-{
-    if (!str_id)
-        str_id = "void_context";
-    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
-    if (IsMouseReleased(mouse_button) && !IsWindowHovered(ImGuiHoveredFlags_AnyWindow))
-        OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
 static bool ImGui::BeginChildEx(const char* name, ImGuiID id, const ImVec2& size_arg, bool border, ImGuiWindowFlags flags)
 {
     ImGuiContext& g = *GImGui;
@@ -5670,7 +4028,6 @@
         SetActiveID(id+1, child_window); // Steal ActiveId with a dummy id so that key-press won't activate child item
         g.ActiveIdSource = ImGuiInputSource_Nav;
     }
-
     return ret;
 }
 
@@ -5761,112 +4118,6 @@
     IM_ASSERT(p_backup == window->DC.StackSizesBackup + IM_ARRAYSIZE(window->DC.StackSizesBackup));
 }
 
-ImRect ImGui::GetWindowAllowedExtentRect(ImGuiWindow*)
-{
-    ImVec2 padding = GImGui->Style.DisplaySafeAreaPadding;
-    ImRect r_screen = GetViewportRect();
-    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
-    return r_screen;
-}
-
-// r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
-// r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
-ImVec2 ImGui::FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy)
-{
-    ImVec2 base_pos_clamped = ImClamp(ref_pos, r_outer.Min, r_outer.Max - size);
-    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
-    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
-
-    // Combo Box policy (we want a connecting edge)
-    if (policy == ImGuiPopupPositionPolicy_ComboBox)
-    {
-        const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Down, ImGuiDir_Right, ImGuiDir_Left, ImGuiDir_Up };
-        for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
-        {
-            const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
-            if (n != -1 && dir == *last_dir) // Already tried this direction?
-                continue;
-            ImVec2 pos;
-            if (dir == ImGuiDir_Down)  pos = ImVec2(r_avoid.Min.x, r_avoid.Max.y);          // Below, Toward Right (default)
-            if (dir == ImGuiDir_Right) pos = ImVec2(r_avoid.Min.x, r_avoid.Min.y - size.y); // Above, Toward Right
-            if (dir == ImGuiDir_Left)  pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Max.y); // Below, Toward Left
-            if (dir == ImGuiDir_Up)    pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Min.y - size.y); // Above, Toward Left
-            if (!r_outer.Contains(ImRect(pos, pos + size)))
-                continue;
-            *last_dir = dir;
-            return pos;
-        }
-    }
-
-    // Default popup policy
-    const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
-    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
-    {
-        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
-        if (n != -1 && dir == *last_dir) // Already tried this direction?
-            continue;
-        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
-        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
-        if (avail_w < size.x || avail_h < size.y)
-            continue;
-        ImVec2 pos;
-        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
-        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
-        *last_dir = dir;
-        return pos;
-    }
-
-    // Fallback, try to keep within display
-    *last_dir = ImGuiDir_None;
-    ImVec2 pos = ref_pos;
-    pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
-    pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
-    return pos;
-}
-
-ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
-{
-    ImGuiContext& g = *GImGui;
-
-    ImRect r_outer = GetWindowAllowedExtentRect(window);
-    if (window->Flags & ImGuiWindowFlags_ChildMenu)
-    {
-        // Child menus typically request _any_ position within the parent menu item, and then our FindBestWindowPosForPopup() function will move the new menu outside the parent bounds.
-        // This is how we end up with child menus appearing (most-commonly) on the right of the parent menu.
-        IM_ASSERT(g.CurrentWindow == window);
-        ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.Size - 2];
-        float horizontal_overlap = g.Style.ItemSpacing.x;       // We want some overlap to convey the relative depth of each menu (currently the amount of overlap is hard-coded to style.ItemSpacing.x).
-        ImRect r_avoid;
-        if (parent_window->DC.MenuBarAppending)
-            r_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
-        else
-            r_avoid = ImRect(parent_window->Pos.x + horizontal_overlap, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - horizontal_overlap - parent_window->ScrollbarSizes.x, FLT_MAX);
-        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-    }
-    if (window->Flags & ImGuiWindowFlags_Popup)
-    {
-        ImRect r_avoid = ImRect(window->Pos.x - 1, window->Pos.y - 1, window->Pos.x + 1, window->Pos.y + 1);
-        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-    }
-    if (window->Flags & ImGuiWindowFlags_Tooltip)
-    {
-        // Position tooltip (always follows mouse)
-        float sc = g.Style.MouseCursorScale;
-        ImVec2 ref_pos = NavCalcPreferredRefPos();
-        ImRect r_avoid;
-        if (!g.NavDisableHighlight && g.NavDisableMouseHover && !(g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos))
-            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 16, ref_pos.y + 8);
-        else
-            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24 * sc, ref_pos.y + 24 * sc); // FIXME: Hard-coded based on mouse cursor shape expectation. Exact dimension not very important.
-        ImVec2 pos = FindBestWindowPosForPopupEx(ref_pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-        if (window->AutoPosLastDirection == ImGuiDir_None)
-            pos = ref_pos + ImVec2(2, 2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
-        return pos;
-    }
-    IM_ASSERT(0);
-    return window->Pos;
-}
-
 static void SetWindowConditionAllowFlags(ImGuiWindow* window, ImGuiCond flags, bool enabled)
 {
     window->SetWindowPosAllowFlags       = enabled ? (window->SetWindowPosAllowFlags       | flags) : (window->SetWindowPosAllowFlags       & ~flags);
@@ -6843,116 +5094,6 @@
     SetCurrentWindow(g.CurrentWindowStack.empty() ? NULL : g.CurrentWindowStack.back());
 }
 
-// Vertical scrollbar
-// The entire piece of code below is rather confusing because:
-// - We handle absolute seeking (when first clicking outside the grab) and relative manipulation (afterward or when clicking inside the grab)
-// - We store values as normalized ratio and in a form that allows the window content to change while we are holding on a scrollbar
-// - We handle both horizontal and vertical scrollbars, which makes the terminology not ideal.
-void ImGui::Scrollbar(ImGuiLayoutType direction)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    const bool horizontal = (direction == ImGuiLayoutType_Horizontal);
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(horizontal ? "#SCROLLX" : "#SCROLLY");
-
-    // Render background
-    bool other_scrollbar = (horizontal ? window->ScrollbarY : window->ScrollbarX);
-    float other_scrollbar_size_w = other_scrollbar ? style.ScrollbarSize : 0.0f;
-    const ImRect window_rect = window->Rect();
-    const float border_size = window->WindowBorderSize;
-    ImRect bb = horizontal
-        ? ImRect(window->Pos.x + border_size, window_rect.Max.y - style.ScrollbarSize, window_rect.Max.x - other_scrollbar_size_w - border_size, window_rect.Max.y - border_size)
-        : ImRect(window_rect.Max.x - style.ScrollbarSize, window->Pos.y + border_size, window_rect.Max.x - border_size, window_rect.Max.y - other_scrollbar_size_w - border_size);
-    if (!horizontal)
-        bb.Min.y += window->TitleBarHeight() + ((window->Flags & ImGuiWindowFlags_MenuBar) ? window->MenuBarHeight() : 0.0f);
-    if (bb.GetWidth() <= 0.0f || bb.GetHeight() <= 0.0f)
-        return;
-
-    int window_rounding_corners;
-    if (horizontal)
-        window_rounding_corners = ImDrawCornerFlags_BotLeft | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
-    else
-        window_rounding_corners = (((window->Flags & ImGuiWindowFlags_NoTitleBar) && !(window->Flags & ImGuiWindowFlags_MenuBar)) ? ImDrawCornerFlags_TopRight : 0) | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
-    window->DrawList->AddRectFilled(bb.Min, bb.Max, GetColorU32(ImGuiCol_ScrollbarBg), window->WindowRounding, window_rounding_corners);
-    bb.Expand(ImVec2(-ImClamp((float)(int)((bb.Max.x - bb.Min.x - 2.0f) * 0.5f), 0.0f, 3.0f), -ImClamp((float)(int)((bb.Max.y - bb.Min.y - 2.0f) * 0.5f), 0.0f, 3.0f)));
-
-    // V denote the main, longer axis of the scrollbar (= height for a vertical scrollbar)
-    float scrollbar_size_v = horizontal ? bb.GetWidth() : bb.GetHeight();
-    float scroll_v = horizontal ? window->Scroll.x : window->Scroll.y;
-    float win_size_avail_v = (horizontal ? window->SizeFull.x : window->SizeFull.y) - other_scrollbar_size_w;
-    float win_size_contents_v = horizontal ? window->SizeContents.x : window->SizeContents.y;
-
-    // Calculate the height of our grabbable box. It generally represent the amount visible (vs the total scrollable amount)
-    // But we maintain a minimum size in pixel to allow for the user to still aim inside.
-    IM_ASSERT(ImMax(win_size_contents_v, win_size_avail_v) > 0.0f); // Adding this assert to check if the ImMax(XXX,1.0f) is still needed. PLEASE CONTACT ME if this triggers.
-    const float win_size_v = ImMax(ImMax(win_size_contents_v, win_size_avail_v), 1.0f);
-    const float grab_h_pixels = ImClamp(scrollbar_size_v * (win_size_avail_v / win_size_v), style.GrabMinSize, scrollbar_size_v);
-    const float grab_h_norm = grab_h_pixels / scrollbar_size_v;
-
-    // Handle input right away. None of the code of Begin() is relying on scrolling position before calling Scrollbar().
-    bool held = false;
-    bool hovered = false;
-    const bool previously_held = (g.ActiveId == id);
-    ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_NoNavFocus);
-
-    float scroll_max = ImMax(1.0f, win_size_contents_v - win_size_avail_v);
-    float scroll_ratio = ImSaturate(scroll_v / scroll_max);
-    float grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
-    if (held && grab_h_norm < 1.0f)
-    {
-        float scrollbar_pos_v = horizontal ? bb.Min.x : bb.Min.y;
-        float mouse_pos_v = horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
-        float* click_delta_to_grab_center_v = horizontal ? &g.ScrollbarClickDeltaToGrabCenter.x : &g.ScrollbarClickDeltaToGrabCenter.y;
-
-        // Click position in scrollbar normalized space (0.0f->1.0f)
-        const float clicked_v_norm = ImSaturate((mouse_pos_v - scrollbar_pos_v) / scrollbar_size_v);
-        SetHoveredID(id);
-
-        bool seek_absolute = false;
-        if (!previously_held)
-        {
-            // On initial click calculate the distance between mouse and the center of the grab
-            if (clicked_v_norm >= grab_v_norm && clicked_v_norm <= grab_v_norm + grab_h_norm)
-            {
-                *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
-            }
-            else
-            {
-                seek_absolute = true;
-                *click_delta_to_grab_center_v = 0.0f;
-            }
-        }
-
-        // Apply scroll
-        // It is ok to modify Scroll here because we are being called in Begin() after the calculation of SizeContents and before setting up our starting position
-        const float scroll_v_norm = ImSaturate((clicked_v_norm - *click_delta_to_grab_center_v - grab_h_norm*0.5f) / (1.0f - grab_h_norm));
-        scroll_v = (float)(int)(0.5f + scroll_v_norm * scroll_max);//(win_size_contents_v - win_size_v));
-        if (horizontal)
-            window->Scroll.x = scroll_v;
-        else
-            window->Scroll.y = scroll_v;
-
-        // Update values for rendering
-        scroll_ratio = ImSaturate(scroll_v / scroll_max);
-        grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
-
-        // Update distance to grab now that we have seeked and saturated
-        if (seek_absolute)
-            *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
-    }
-
-    // Render
-    const ImU32 grab_col = GetColorU32(held ? ImGuiCol_ScrollbarGrabActive : hovered ? ImGuiCol_ScrollbarGrabHovered : ImGuiCol_ScrollbarGrab);
-    ImRect grab_rect;
-    if (horizontal)
-        grab_rect = ImRect(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm), bb.Min.y, ImMin(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm) + grab_h_pixels, window_rect.Max.x), bb.Max.y);
-    else
-        grab_rect = ImRect(bb.Min.x, ImLerp(bb.Min.y, bb.Max.y, grab_v_norm), bb.Max.x, ImMin(ImLerp(bb.Min.y, bb.Max.y, grab_v_norm) + grab_h_pixels, window_rect.Max.y));
-    window->DrawList->AddRectFilled(grab_rect.Min, grab_rect.Max, grab_col, style.ScrollbarRounding);
-}
-
 void ImGui::BringWindowToFront(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -7871,177 +6012,6 @@
     return window->DC.StateStorage;
 }
 
-void ImGui::TextV(const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const char* text_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    TextUnformatted(g.TempBuffer, text_end);
-}
-
-void ImGui::Text(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextColoredV(const ImVec4& col, const char* fmt, va_list args)
-{
-    PushStyleColor(ImGuiCol_Text, col);
-    TextV(fmt, args);
-    PopStyleColor();
-}
-
-void ImGui::TextColored(const ImVec4& col, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextColoredV(col, fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextDisabledV(const char* fmt, va_list args)
-{
-    PushStyleColor(ImGuiCol_Text, GImGui->Style.Colors[ImGuiCol_TextDisabled]);
-    TextV(fmt, args);
-    PopStyleColor();
-}
-
-void ImGui::TextDisabled(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextDisabledV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextWrappedV(const char* fmt, va_list args)
-{
-    bool need_wrap = (GImGui->CurrentWindow->DC.TextWrapPos < 0.0f);    // Keep existing wrap position is one ia already set
-    if (need_wrap) PushTextWrapPos(0.0f);
-    TextV(fmt, args);
-    if (need_wrap) PopTextWrapPos();
-}
-
-void ImGui::TextWrapped(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextWrappedV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextUnformatted(const char* text, const char* text_end)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(text != NULL);
-    const char* text_begin = text;
-    if (text_end == NULL)
-        text_end = text + strlen(text); // FIXME-OPT
-
-    const ImVec2 text_pos(window->DC.CursorPos.x, window->DC.CursorPos.y + window->DC.CurrentLineTextBaseOffset);
-    const float wrap_pos_x = window->DC.TextWrapPos;
-    const bool wrap_enabled = wrap_pos_x >= 0.0f;
-    if (text_end - text > 2000 && !wrap_enabled)
-    {
-        // Long text!
-        // Perform manual coarse clipping to optimize for long multi-line text
-        // From this point we will only compute the width of lines that are visible. Optimization only available when word-wrapping is disabled.
-        // We also don't vertically center the text within the line full height, which is unlikely to matter because we are likely the biggest and only item on the line.
-        const char* line = text;
-        const float line_height = GetTextLineHeight();
-        const ImRect clip_rect = window->ClipRect;
-        ImVec2 text_size(0,0);
-
-        if (text_pos.y <= clip_rect.Max.y)
-        {
-            ImVec2 pos = text_pos;
-
-            // Lines to skip (can't skip when logging text)
-            if (!g.LogEnabled)
-            {
-                int lines_skippable = (int)((clip_rect.Min.y - text_pos.y) / line_height);
-                if (lines_skippable > 0)
-                {
-                    int lines_skipped = 0;
-                    while (line < text_end && lines_skipped < lines_skippable)
-                    {
-                        const char* line_end = strchr(line, '\n');
-                        if (!line_end)
-                            line_end = text_end;
-                        line = line_end + 1;
-                        lines_skipped++;
-                    }
-                    pos.y += lines_skipped * line_height;
-                }
-            }
-
-            // Lines to render
-            if (line < text_end)
-            {
-                ImRect line_rect(pos, pos + ImVec2(FLT_MAX, line_height));
-                while (line < text_end)
-                {
-                    const char* line_end = strchr(line, '\n');
-                    if (IsClippedEx(line_rect, 0, false))
-                        break;
-
-                    const ImVec2 line_size = CalcTextSize(line, line_end, false);
-                    text_size.x = ImMax(text_size.x, line_size.x);
-                    RenderText(pos, line, line_end, false);
-                    if (!line_end)
-                        line_end = text_end;
-                    line = line_end + 1;
-                    line_rect.Min.y += line_height;
-                    line_rect.Max.y += line_height;
-                    pos.y += line_height;
-                }
-
-                // Count remaining lines
-                int lines_skipped = 0;
-                while (line < text_end)
-                {
-                    const char* line_end = strchr(line, '\n');
-                    if (!line_end)
-                        line_end = text_end;
-                    line = line_end + 1;
-                    lines_skipped++;
-                }
-                pos.y += lines_skipped * line_height;
-            }
-
-            text_size.y += (pos - text_pos).y;
-        }
-
-        ImRect bb(text_pos, text_pos + text_size);
-        ItemSize(bb);
-        ItemAdd(bb, 0);
-    }
-    else
-    {
-        const float wrap_width = wrap_enabled ? CalcWrapWidthForPos(window->DC.CursorPos, wrap_pos_x) : 0.0f;
-        const ImVec2 text_size = CalcTextSize(text_begin, text_end, false, wrap_width);
-
-        // Account of baseline offset
-        ImRect bb(text_pos, text_pos + text_size);
-        ItemSize(text_size);
-        if (!ItemAdd(bb, 0))
-            return;
-
-        // Render (we don't hide text after ## in this end-user function)
-        RenderTextWrapped(bb.Min, text_begin, text_end, wrap_width);
-    }
-}
-
 void ImGui::AlignTextToFramePadding()
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -8053,864 +6023,6 @@
     window->DC.CurrentLineTextBaseOffset = ImMax(window->DC.CurrentLineTextBaseOffset, g.Style.FramePadding.y);
 }
 
-// Add a label+text combo aligned to other label+value widgets
-void ImGui::LabelTextV(const char* label, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect value_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2));
-    const ImRect total_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w + (label_size.x > 0.0f ? style.ItemInnerSpacing.x : 0.0f), style.FramePadding.y*2) + label_size);
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, 0))
-        return;
-
-    // Render
-    const char* value_text_begin = &g.TempBuffer[0];
-    const char* value_text_end = value_text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    RenderTextClipped(value_bb.Min, value_bb.Max, value_text_begin, value_text_end, NULL, ImVec2(0.0f,0.5f));
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(value_bb.Max.x + style.ItemInnerSpacing.x, value_bb.Min.y + style.FramePadding.y), label);
-}
-
-void ImGui::LabelText(const char* label, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    LabelTextV(label, fmt, args);
-    va_end(args);
-}
-
-bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool* out_held, ImGuiButtonFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-
-    if (flags & ImGuiButtonFlags_Disabled)
-    {
-        if (out_hovered) *out_hovered = false;
-        if (out_held) *out_held = false;
-        if (g.ActiveId == id) ClearActiveID();
-        return false;
-    }
-
-    // Default behavior requires click+release on same spot
-    if ((flags & (ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnClick | ImGuiButtonFlags_PressedOnRelease | ImGuiButtonFlags_PressedOnDoubleClick)) == 0)
-        flags |= ImGuiButtonFlags_PressedOnClickRelease;
-
-    ImGuiWindow* backup_hovered_window = g.HoveredWindow;
-    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
-        g.HoveredWindow = window;
-
-    bool pressed = false;
-    bool hovered = ItemHoverable(bb, id);
-
-    // Drag source doesn't report as hovered
-    if (hovered && g.DragDropActive && g.DragDropPayload.SourceId == id && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoDisableHover))
-        hovered = false;
-
-    // Special mode for Drag and Drop where holding button pressed for a long time while dragging another item triggers the button
-    if (g.DragDropActive && (flags & ImGuiButtonFlags_PressedOnDragDropHold) && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoHoldToOpenOthers))
-        if (IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem))
-        {
-            hovered = true;
-            SetHoveredID(id);
-            if (CalcTypematicPressedRepeatAmount(g.HoveredIdTimer + 0.0001f, g.HoveredIdTimer + 0.0001f - g.IO.DeltaTime, 0.01f, 0.70f)) // FIXME: Our formula for CalcTypematicPressedRepeatAmount() is fishy
-            {
-                pressed = true;
-                FocusWindow(window);
-            }
-        }
-
-    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
-        g.HoveredWindow = backup_hovered_window;
-
-    // AllowOverlap mode (rarely used) requires previous frame HoveredId to be null or to match. This allows using patterns where a later submitted widget overlaps a previous one.
-    if (hovered && (flags & ImGuiButtonFlags_AllowItemOverlap) && (g.HoveredIdPreviousFrame != id && g.HoveredIdPreviousFrame != 0))
-        hovered = false;
-
-    // Mouse
-    if (hovered)
-    {
-        if (!(flags & ImGuiButtonFlags_NoKeyModifiers) || (!g.IO.KeyCtrl && !g.IO.KeyShift && !g.IO.KeyAlt))
-        {
-            //                        | CLICKING        | HOLDING with ImGuiButtonFlags_Repeat
-            // PressedOnClickRelease  |  <on release>*  |  <on repeat> <on repeat> .. (NOT on release)  <-- MOST COMMON! (*) only if both click/release were over bounds
-            // PressedOnClick         |  <on click>     |  <on click> <on repeat> <on repeat> ..
-            // PressedOnRelease       |  <on release>   |  <on repeat> <on repeat> .. (NOT on release)
-            // PressedOnDoubleClick   |  <on dclick>    |  <on dclick> <on repeat> <on repeat> ..
-            // FIXME-NAV: We don't honor those different behaviors.
-            if ((flags & ImGuiButtonFlags_PressedOnClickRelease) && g.IO.MouseClicked[0])
-            {
-                SetActiveID(id, window);
-                if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                    SetFocusID(id, window);
-                FocusWindow(window);
-            }
-            if (((flags & ImGuiButtonFlags_PressedOnClick) && g.IO.MouseClicked[0]) || ((flags & ImGuiButtonFlags_PressedOnDoubleClick) && g.IO.MouseDoubleClicked[0]))
-            {
-                pressed = true;
-                if (flags & ImGuiButtonFlags_NoHoldingActiveID)
-                    ClearActiveID();
-                else
-                    SetActiveID(id, window); // Hold on ID
-                FocusWindow(window);
-            }
-            if ((flags & ImGuiButtonFlags_PressedOnRelease) && g.IO.MouseReleased[0])
-            {
-                if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
-                    pressed = true;
-                ClearActiveID();
-            }
-
-            // 'Repeat' mode acts when held regardless of _PressedOn flags (see table above).
-            // Relies on repeat logic of IsMouseClicked() but we may as well do it ourselves if we end up exposing finer RepeatDelay/RepeatRate settings.
-            if ((flags & ImGuiButtonFlags_Repeat) && g.ActiveId == id && g.IO.MouseDownDuration[0] > 0.0f && IsMouseClicked(0, true))
-                pressed = true;
-        }
-
-        if (pressed)
-            g.NavDisableHighlight = true;
-    }
-
-    // Gamepad/Keyboard navigation
-    // We report navigated item as hovered but we don't set g.HoveredId to not interfere with mouse.
-    if (g.NavId == id && !g.NavDisableHighlight && g.NavDisableMouseHover && (g.ActiveId == 0 || g.ActiveId == id || g.ActiveId == window->MoveId))
-        hovered = true;
-
-    if (g.NavActivateDownId == id)
-    {
-        bool nav_activated_by_code = (g.NavActivateId == id);
-        bool nav_activated_by_inputs = IsNavInputPressed(ImGuiNavInput_Activate, (flags & ImGuiButtonFlags_Repeat) ? ImGuiInputReadMode_Repeat : ImGuiInputReadMode_Pressed);
-        if (nav_activated_by_code || nav_activated_by_inputs)
-            pressed = true;
-        if (nav_activated_by_code || nav_activated_by_inputs || g.ActiveId == id)
-        {
-            // Set active id so it can be queried by user via IsItemActive(), equivalent of holding the mouse button.
-            g.NavActivateId = id; // This is so SetActiveId assign a Nav source
-            SetActiveID(id, window);
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                SetFocusID(id, window);
-            g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right) | (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        }
-    }
-
-    bool held = false;
-    if (g.ActiveId == id)
-    {
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
-        {
-            if (g.ActiveIdIsJustActivated)
-                g.ActiveIdClickOffset = g.IO.MousePos - bb.Min;
-            if (g.IO.MouseDown[0])
-            {
-                held = true;
-            }
-            else
-            {
-                if (hovered && (flags & ImGuiButtonFlags_PressedOnClickRelease))
-                    if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
-                        if (!g.DragDropActive)
-                            pressed = true;
-                ClearActiveID();
-            }
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                g.NavDisableHighlight = true;
-        }
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-        {
-            if (g.NavActivateDownId != id)
-                ClearActiveID();
-        }
-    }
-
-    if (out_hovered) *out_hovered = hovered;
-    if (out_held) *out_held = held;
-
-    return pressed;
-}
-
-bool ImGui::ButtonEx(const char* label, const ImVec2& size_arg, ImGuiButtonFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    ImVec2 pos = window->DC.CursorPos;
-    if ((flags & ImGuiButtonFlags_AlignTextBaseLine) && style.FramePadding.y < window->DC.CurrentLineTextBaseOffset) // Try to vertically align buttons that are smaller/have no padding so that text baseline matches (bit hacky, since it shouldn't be a flag)
-        pos.y += window->DC.CurrentLineTextBaseOffset - style.FramePadding.y;
-    ImVec2 size = CalcItemSize(size_arg, label_size.x + style.FramePadding.x * 2.0f, label_size.y + style.FramePadding.y * 2.0f);
-
-    const ImRect bb(pos, pos + size);
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
-        flags |= ImGuiButtonFlags_Repeat;
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
-    if (pressed)
-        MarkItemEdited(id);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, style.FrameRounding);
-    RenderTextClipped(bb.Min + style.FramePadding, bb.Max - style.FramePadding, label, NULL, &label_size, style.ButtonTextAlign, &bb);
-
-    // Automatically close popups
-    //if (pressed && !(flags & ImGuiButtonFlags_DontClosePopups) && (window->Flags & ImGuiWindowFlags_Popup))
-    //    CloseCurrentPopup();
-
-    return pressed;
-}
-
-bool ImGui::Button(const char* label, const ImVec2& size_arg)
-{
-    return ButtonEx(label, size_arg, 0);
-}
-
-// Small buttons fits within text without additional vertical spacing.
-bool ImGui::SmallButton(const char* label)
-{
-    ImGuiContext& g = *GImGui;
-    float backup_padding_y = g.Style.FramePadding.y;
-    g.Style.FramePadding.y = 0.0f;
-    bool pressed = ButtonEx(label, ImVec2(0,0), ImGuiButtonFlags_AlignTextBaseLine);
-    g.Style.FramePadding.y = backup_padding_y;
-    return pressed;
-}
-
-bool ImGui::ArrowButtonEx(const char* str_id, ImGuiDir dir, ImVec2 size, ImGuiButtonFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiID id = window->GetID(str_id);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const float default_size = GetFrameHeight();
-    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
-        flags |= ImGuiButtonFlags_Repeat;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, g.Style.FrameRounding);
-    RenderArrow(bb.Min + ImVec2(ImMax(0.0f, size.x - g.FontSize - g.Style.FramePadding.x), ImMax(0.0f, size.y - g.FontSize - g.Style.FramePadding.y)), dir);
-
-    return pressed;
-}
-
-bool ImGui::ArrowButton(const char* str_id, ImGuiDir dir)
-{
-    float sz = GetFrameHeight();
-    return ArrowButtonEx(str_id, dir, ImVec2(sz, sz), 0);
-}
-
-// Tip: use ImGui::PushID()/PopID() to push indices or pointers in the ID stack.
-// Then you can keep 'str_id' empty or the same for all your buttons (instead of creating a string based on a non-string id)
-bool ImGui::InvisibleButton(const char* str_id, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    // Cannot use zero-size for InvisibleButton(). Unlike Button() there is not way to fallback using the label size.
-    IM_ASSERT(size_arg.x != 0.0f && size_arg.y != 0.0f);
-
-    const ImGuiID id = window->GetID(str_id);
-    ImVec2 size = CalcItemSize(size_arg, 0.0f, 0.0f);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    ItemSize(bb);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    return pressed;
-}
-
-// Button to close a window
-bool ImGui::CloseButton(ImGuiID id, const ImVec2& pos, float radius)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    // We intentionally allow interaction when clipped so that a mechanical Alt,Right,Validate sequence close a window.
-    // (this isn't the regular behavior of buttons, but it doesn't affect the user much because navigation tends to keep items visible).
-    const ImRect bb(pos - ImVec2(radius,radius), pos + ImVec2(radius,radius));
-    bool is_clipped = !ItemAdd(bb, id);
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-    if (is_clipped)
-        return pressed;
-
-    // Render
-    ImVec2 center = bb.GetCenter();
-    if (hovered)
-        window->DrawList->AddCircleFilled(center, ImMax(2.0f, radius), GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : ImGuiCol_ButtonHovered), 9);
-
-    float cross_extent = (radius * 0.7071f) - 1.0f;
-    ImU32 cross_col = GetColorU32(ImGuiCol_Text);
-    center -= ImVec2(0.5f, 0.5f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent,+cross_extent), center + ImVec2(-cross_extent,-cross_extent), cross_col, 1.0f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent,-cross_extent), center + ImVec2(-cross_extent,+cross_extent), cross_col, 1.0f);
-
-    return pressed;
-}
-
-bool ImGui::CollapseButton(ImGuiID id, const ImVec2& pos)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    ImRect bb(pos, pos + ImVec2(g.FontSize, g.FontSize) + g.Style.FramePadding * 2.0f);
-    ItemAdd(bb, id);
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_None);
-
-    ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    if (hovered || held)
-        window->DrawList->AddCircleFilled(bb.GetCenter() + ImVec2(0.0f, -0.5f), g.FontSize * 0.5f + 1.0f, col, 9);
-    RenderArrow(bb.Min + g.Style.FramePadding, window->Collapsed ? ImGuiDir_Right : ImGuiDir_Down, 1.0f);
-
-    // Switch to moving the window after mouse is moved beyond the initial drag threshold
-    if (IsItemActive() && IsMouseDragging())
-        StartMouseMovingWindow(window);
-
-    return pressed;
-}
-
-void ImGui::Image(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, const ImVec4& tint_col, const ImVec4& border_col)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    if (border_col.w > 0.0f)
-        bb.Max += ImVec2(2,2);
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    if (border_col.w > 0.0f)
-    {
-        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(border_col), 0.0f);
-        window->DrawList->AddImage(user_texture_id, bb.Min+ImVec2(1,1), bb.Max-ImVec2(1,1), uv0, uv1, GetColorU32(tint_col));
-    }
-    else
-    {
-        window->DrawList->AddImage(user_texture_id, bb.Min, bb.Max, uv0, uv1, GetColorU32(tint_col));
-    }
-}
-
-// frame_padding < 0: uses FramePadding from style (default)
-// frame_padding = 0: no framing
-// frame_padding > 0: set framing size
-// The color used are the button colors.
-bool ImGui::ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, int frame_padding, const ImVec4& bg_col, const ImVec4& tint_col)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    // Default to using texture ID as ID. User can still push string/integer prefixes.
-    // We could hash the size/uv to create a unique ID but that would prevent the user from animating UV.
-    PushID((void*)user_texture_id);
-    const ImGuiID id = window->GetID("#image");
-    PopID();
-
-    const ImVec2 padding = (frame_padding >= 0) ? ImVec2((float)frame_padding, (float)frame_padding) : style.FramePadding;
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size + padding*2);
-    const ImRect image_bb(window->DC.CursorPos + padding, window->DC.CursorPos + padding + size);
-    ItemSize(bb);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, ImClamp((float)ImMin(padding.x, padding.y), 0.0f, style.FrameRounding));
-    if (bg_col.w > 0.0f)
-        window->DrawList->AddRectFilled(image_bb.Min, image_bb.Max, GetColorU32(bg_col));
-    window->DrawList->AddImage(user_texture_id, image_bb.Min, image_bb.Max, uv0, uv1, GetColorU32(tint_col));
-
-    return pressed;
-}
-
-// Start logging ImGui output to TTY
-void ImGui::LogToTTY(int max_depth)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = stdout;
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-// Start logging ImGui output to given file
-void ImGui::LogToFile(int max_depth, const char* filename)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    if (!filename)
-    {
-        filename = g.IO.LogFilename;
-        if (!filename)
-            return;
-    }
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = ImFileOpen(filename, "ab");
-    if (!g.LogFile)
-    {
-        IM_ASSERT(g.LogFile != NULL); // Consider this an error
-        return;
-    }
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-// Start logging ImGui output to clipboard
-void ImGui::LogToClipboard(int max_depth)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = NULL;
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-void ImGui::LogFinish()
-{
-    ImGuiContext& g = *GImGui;
-    if (!g.LogEnabled)
-        return;
-
-    LogText(IM_NEWLINE);
-    if (g.LogFile != NULL)
-    {
-        if (g.LogFile == stdout)
-            fflush(g.LogFile);
-        else
-            fclose(g.LogFile);
-        g.LogFile = NULL;
-    }
-    if (g.LogClipboard.size() > 1)
-    {
-        SetClipboardText(g.LogClipboard.begin());
-        g.LogClipboard.clear();
-    }
-    g.LogEnabled = false;
-}
-
-// Helper to display logging buttons
-void ImGui::LogButtons()
-{
-    ImGuiContext& g = *GImGui;
-
-    PushID("LogButtons");
-    const bool log_to_tty = Button("Log To TTY"); SameLine();
-    const bool log_to_file = Button("Log To File"); SameLine();
-    const bool log_to_clipboard = Button("Log To Clipboard"); SameLine();
-    PushItemWidth(80.0f);
-    PushAllowKeyboardFocus(false);
-    SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL);
-    PopAllowKeyboardFocus();
-    PopItemWidth();
-    PopID();
-
-    // Start logging at the end of the function so that the buttons don't appear in the log
-    if (log_to_tty)
-        LogToTTY(g.LogAutoExpandMaxDepth);
-    if (log_to_file)
-        LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename);
-    if (log_to_clipboard)
-        LogToClipboard(g.LogAutoExpandMaxDepth);
-}
-
-bool ImGui::TreeNodeBehaviorIsOpen(ImGuiID id, ImGuiTreeNodeFlags flags)
-{
-    if (flags & ImGuiTreeNodeFlags_Leaf)
-        return true;
-
-    // We only write to the tree storage if the user clicks (or explicitly use SetNextTreeNode*** functions)
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    ImGuiStorage* storage = window->DC.StateStorage;
-
-    bool is_open;
-    if (g.NextTreeNodeOpenCond != 0)
-    {
-        if (g.NextTreeNodeOpenCond & ImGuiCond_Always)
-        {
-            is_open = g.NextTreeNodeOpenVal;
-            storage->SetInt(id, is_open);
-        }
-        else
-        {
-            // We treat ImGuiCond_Once and ImGuiCond_FirstUseEver the same because tree node state are not saved persistently.
-            const int stored_value = storage->GetInt(id, -1);
-            if (stored_value == -1)
-            {
-                is_open = g.NextTreeNodeOpenVal;
-                storage->SetInt(id, is_open);
-            }
-            else
-            {
-                is_open = stored_value != 0;
-            }
-        }
-        g.NextTreeNodeOpenCond = 0;
-    }
-    else
-    {
-        is_open = storage->GetInt(id, (flags & ImGuiTreeNodeFlags_DefaultOpen) ? 1 : 0) != 0;
-    }
-
-    // When logging is enabled, we automatically expand tree nodes (but *NOT* collapsing headers.. seems like sensible behavior).
-    // NB- If we are above max depth we still allow manually opened nodes to be logged.
-    if (g.LogEnabled && !(flags & ImGuiTreeNodeFlags_NoAutoOpenOnLog) && window->DC.TreeDepth < g.LogAutoExpandMaxDepth)
-        is_open = true;
-
-    return is_open;
-}
-
-bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* label, const char* label_end)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const bool display_frame = (flags & ImGuiTreeNodeFlags_Framed) != 0;
-    const ImVec2 padding = (display_frame || (flags & ImGuiTreeNodeFlags_FramePadding)) ? style.FramePadding : ImVec2(style.FramePadding.x, 0.0f);
-
-    if (!label_end)
-        label_end = FindRenderedTextEnd(label);
-    const ImVec2 label_size = CalcTextSize(label, label_end, false);
-
-    // We vertically grow up to current line height up the typical widget height.
-    const float text_base_offset_y = ImMax(padding.y, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
-    const float frame_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + style.FramePadding.y*2), label_size.y + padding.y*2);
-    ImRect frame_bb = ImRect(window->DC.CursorPos, ImVec2(window->Pos.x + GetContentRegionMax().x, window->DC.CursorPos.y + frame_height));
-    if (display_frame)
-    {
-        // Framed header expand a little outside the default padding
-        frame_bb.Min.x -= (float)(int)(window->WindowPadding.x*0.5f) - 1;
-        frame_bb.Max.x += (float)(int)(window->WindowPadding.x*0.5f) - 1;
-    }
-
-    const float text_offset_x = (g.FontSize + (display_frame ? padding.x*3 : padding.x*2));   // Collapser arrow width + Spacing
-    const float text_width = g.FontSize + (label_size.x > 0.0f ? label_size.x + padding.x*2 : 0.0f);   // Include collapser
-    ItemSize(ImVec2(text_width, frame_height), text_base_offset_y);
-
-    // For regular tree nodes, we arbitrary allow to click past 2 worth of ItemSpacing
-    // (Ideally we'd want to add a flag for the user to specify if we want the hit test to be done up to the right side of the content or not)
-    const ImRect interact_bb = display_frame ? frame_bb : ImRect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + text_width + style.ItemSpacing.x*2, frame_bb.Max.y);
-    bool is_open = TreeNodeBehaviorIsOpen(id, flags);
-
-    // Store a flag for the current depth to tell if we will allow closing this node when navigating one of its child.
-    // For this purpose we essentially compare if g.NavIdIsAlive went from 0 to 1 between TreeNode() and TreePop().
-    // This is currently only support 32 level deep and we are fine with (1 << Depth) overflowing into a zero.
-    if (is_open && !g.NavIdIsAlive && (flags & ImGuiTreeNodeFlags_NavLeftJumpsBackHere) && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        window->DC.TreeDepthMayJumpToParentOnPop |= (1 << window->DC.TreeDepth);
-
-    bool item_add = ItemAdd(interact_bb, id);
-    window->DC.LastItemStatusFlags |= ImGuiItemStatusFlags_HasDisplayRect;
-    window->DC.LastItemDisplayRect = frame_bb;
-
-    if (!item_add)
-    {
-        if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-            TreePushRawID(id);
-        return is_open;
-    }
-
-    // Flags that affects opening behavior:
-    // - 0(default) ..................... single-click anywhere to open
-    // - OpenOnDoubleClick .............. double-click anywhere to open
-    // - OpenOnArrow .................... single-click on arrow to open
-    // - OpenOnDoubleClick|OpenOnArrow .. single-click on arrow or double-click anywhere to open
-    ImGuiButtonFlags button_flags = ImGuiButtonFlags_NoKeyModifiers | ((flags & ImGuiTreeNodeFlags_AllowItemOverlap) ? ImGuiButtonFlags_AllowItemOverlap : 0);
-    if (!(flags & ImGuiTreeNodeFlags_Leaf))
-        button_flags |= ImGuiButtonFlags_PressedOnDragDropHold;
-    if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
-        button_flags |= ImGuiButtonFlags_PressedOnDoubleClick | ((flags & ImGuiTreeNodeFlags_OpenOnArrow) ? ImGuiButtonFlags_PressedOnClickRelease : 0);
-
-    bool hovered, held, pressed = ButtonBehavior(interact_bb, id, &hovered, &held, button_flags);
-    if (!(flags & ImGuiTreeNodeFlags_Leaf))
-    {
-        bool toggled = false;
-        if (pressed)
-        {
-            toggled = !(flags & (ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick)) || (g.NavActivateId == id);
-            if (flags & ImGuiTreeNodeFlags_OpenOnArrow)
-                toggled |= IsMouseHoveringRect(interact_bb.Min, ImVec2(interact_bb.Min.x + text_offset_x, interact_bb.Max.y)) && (!g.NavDisableMouseHover);
-            if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
-                toggled |= g.IO.MouseDoubleClicked[0];
-            if (g.DragDropActive && is_open) // When using Drag and Drop "hold to open" we keep the node highlighted after opening, but never close it again.
-                toggled = false;
-        }
-
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Left && is_open)
-        {
-            toggled = true;
-            NavMoveRequestCancel();
-        }
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right && !is_open) // If there's something upcoming on the line we may want to give it the priority?
-        {
-            toggled = true;
-            NavMoveRequestCancel();
-        }
-
-        if (toggled)
-        {
-            is_open = !is_open;
-            window->DC.StateStorage->SetInt(id, is_open);
-        }
-    }
-    if (flags & ImGuiTreeNodeFlags_AllowItemOverlap)
-        SetItemAllowOverlap();
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
-    const ImVec2 text_pos = frame_bb.Min + ImVec2(text_offset_x, text_base_offset_y);
-    if (display_frame)
-    {
-        // Framed type
-        RenderFrame(frame_bb.Min, frame_bb.Max, col, true, style.FrameRounding);
-        RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
-        RenderArrow(frame_bb.Min + ImVec2(padding.x, text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 1.0f);
-        if (g.LogEnabled)
-        {
-            // NB: '##' is normally used to hide text (as a library-wide feature), so we need to specify the text range to make sure the ## aren't stripped out here.
-            const char log_prefix[] = "\n##";
-            const char log_suffix[] = "##";
-            LogRenderedText(&text_pos, log_prefix, log_prefix+3);
-            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
-            LogRenderedText(&text_pos, log_suffix+1, log_suffix+3);
-        }
-        else
-        {
-            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
-        }
-    }
-    else
-    {
-        // Unframed typed for tree nodes
-        if (hovered || (flags & ImGuiTreeNodeFlags_Selected))
-        {
-            RenderFrame(frame_bb.Min, frame_bb.Max, col, false);
-            RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
-        }
-
-        if (flags & ImGuiTreeNodeFlags_Bullet)
-            RenderBullet(frame_bb.Min + ImVec2(text_offset_x * 0.5f, g.FontSize*0.50f + text_base_offset_y));
-        else if (!(flags & ImGuiTreeNodeFlags_Leaf))
-            RenderArrow(frame_bb.Min + ImVec2(padding.x, g.FontSize*0.15f + text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 0.70f);
-        if (g.LogEnabled)
-            LogRenderedText(&text_pos, ">");
-        RenderText(text_pos, label, label_end, false);
-    }
-
-    if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        TreePushRawID(id);
-    return is_open;
-}
-
-// CollapsingHeader returns true when opened but do not indent nor push into the ID stack (because of the ImGuiTreeNodeFlags_NoTreePushOnOpen flag).
-// This is basically the same as calling TreeNodeEx(label, ImGuiTreeNodeFlags_CollapsingHeader). You can remove the _NoTreePushOnOpen flag if you want behavior closer to normal TreeNode().
-bool ImGui::CollapsingHeader(const char* label, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags | ImGuiTreeNodeFlags_CollapsingHeader, label);
-}
-
-bool ImGui::CollapsingHeader(const char* label, bool* p_open, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    if (p_open && !*p_open)
-        return false;
-
-    ImGuiID id = window->GetID(label);
-    bool is_open = TreeNodeBehavior(id, flags | ImGuiTreeNodeFlags_CollapsingHeader | (p_open ? ImGuiTreeNodeFlags_AllowItemOverlap : 0), label);
-    if (p_open)
-    {
-        // Create a small overlapping close button // FIXME: We can evolve this into user accessible helpers to add extra buttons on title bars, headers, etc.
-        ImGuiContext& g = *GImGui;
-        ImGuiItemHoveredDataBackup last_item_backup;
-        float button_radius = g.FontSize * 0.5f;
-        ImVec2 button_center = ImVec2(ImMin(window->DC.LastItemRect.Max.x, window->ClipRect.Max.x) - g.Style.FramePadding.x - button_radius, window->DC.LastItemRect.GetCenter().y);
-        if (CloseButton(window->GetID((void*)(intptr_t)(id+1)), button_center, button_radius))
-            *p_open = false;
-        last_item_backup.Restore();
-    }
-
-    return is_open;
-}
-
-bool ImGui::TreeNodeEx(const char* label, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags, label, NULL);
-}
-
-bool ImGui::TreeNodeExV(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    return TreeNodeBehavior(window->GetID(str_id), flags, g.TempBuffer, label_end);
-}
-
-bool ImGui::TreeNodeExV(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    return TreeNodeBehavior(window->GetID(ptr_id), flags, g.TempBuffer, label_end);
-}
-
-bool ImGui::TreeNodeV(const char* str_id, const char* fmt, va_list args)
-{
-    return TreeNodeExV(str_id, 0, fmt, args);
-}
-
-bool ImGui::TreeNodeV(const void* ptr_id, const char* fmt, va_list args)
-{
-    return TreeNodeExV(ptr_id, 0, fmt, args);
-}
-
-bool ImGui::TreeNodeEx(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(str_id, flags, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNodeEx(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(ptr_id, flags, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const char* str_id, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(str_id, 0, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const void* ptr_id, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(ptr_id, 0, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const char* label)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-    return TreeNodeBehavior(window->GetID(label), 0, label, NULL);
-}
-
-void ImGui::TreeAdvanceToLabelPos()
-{
-    ImGuiContext& g = *GImGui;
-    g.CurrentWindow->DC.CursorPos.x += GetTreeNodeToLabelSpacing();
-}
-
-// Horizontal distance preceding label when using TreeNode() or Bullet()
-float ImGui::GetTreeNodeToLabelSpacing()
-{
-    ImGuiContext& g = *GImGui;
-    return g.FontSize + (g.Style.FramePadding.x * 2.0f);
-}
-
-void ImGui::SetNextTreeNodeOpen(bool is_open, ImGuiCond cond)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow->SkipItems)
-        return;
-    g.NextTreeNodeOpenVal = is_open;
-    g.NextTreeNodeOpenCond = cond ? cond : ImGuiCond_Always;
-}
-
 void ImGui::PushID(const char* str_id)
 {
     ImGuiWindow* window = GetCurrentWindowRead();
@@ -8957,4093 +6069,6 @@
     return GImGui->CurrentWindow->GetID(ptr_id);
 }
 
-void ImGui::Bullet()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize, line_height));
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-    {
-        SameLine(0, style.FramePadding.x*2);
-        return;
-    }
-
-    // Render and stay on same line
-    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
-    SameLine(0, style.FramePadding.x*2);
-}
-
-// Text with a little bullet aligned to the typical tree node.
-void ImGui::BulletTextV(const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const char* text_begin = g.TempBuffer;
-    const char* text_end = text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    const ImVec2 label_size = CalcTextSize(text_begin, text_end, false);
-    const float text_base_offset_y = ImMax(0.0f, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
-    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize + (label_size.x > 0.0f ? (label_size.x + style.FramePadding.x*2) : 0.0f), ImMax(line_height, label_size.y)));  // Empty text doesn't add padding
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    // Render
-    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
-    RenderText(bb.Min+ImVec2(g.FontSize + style.FramePadding.x*2, text_base_offset_y), text_begin, text_end, false);
-}
-
-void ImGui::BulletText(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    BulletTextV(fmt, args);
-    va_end(args);
-}
-
-static inline int DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format)
-{
-    if (data_type == ImGuiDataType_S32 || data_type == ImGuiDataType_U32)   // Signedness doesn't matter when pushing the argument
-        return ImFormatString(buf, buf_size, format, *(const ImU32*)data_ptr);
-    if (data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)   // Signedness doesn't matter when pushing the argument
-        return ImFormatString(buf, buf_size, format, *(const ImU64*)data_ptr);
-    if (data_type == ImGuiDataType_Float)
-        return ImFormatString(buf, buf_size, format, *(const float*)data_ptr);
-    if (data_type == ImGuiDataType_Double)
-        return ImFormatString(buf, buf_size, format, *(const double*)data_ptr);
-    IM_ASSERT(0);
-    return 0;
-}
-
-// FIXME: Adding support for clamping on boundaries of the data type would be nice.
-static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg1, const void* arg2)
-{
-    IM_ASSERT(op == '+' || op == '-');
-    switch (data_type)
-    {
-        case ImGuiDataType_S32:
-            if (op == '+')      *(int*)output = *(const int*)arg1 + *(const int*)arg2;
-            else if (op == '-') *(int*)output = *(const int*)arg1 - *(const int*)arg2;
-            return;
-        case ImGuiDataType_U32:
-            if (op == '+')      *(unsigned int*)output = *(const unsigned int*)arg1 + *(const ImU32*)arg2;
-            else if (op == '-') *(unsigned int*)output = *(const unsigned int*)arg1 - *(const ImU32*)arg2;
-            return;
-        case ImGuiDataType_S64:
-            if (op == '+')      *(ImS64*)output = *(const ImS64*)arg1 + *(const ImS64*)arg2;
-            else if (op == '-') *(ImS64*)output = *(const ImS64*)arg1 - *(const ImS64*)arg2;
-            return;
-        case ImGuiDataType_U64:
-            if (op == '+')      *(ImU64*)output = *(const ImU64*)arg1 + *(const ImU64*)arg2;
-            else if (op == '-') *(ImU64*)output = *(const ImU64*)arg1 - *(const ImU64*)arg2;
-            return;
-        case ImGuiDataType_Float:
-            if (op == '+')      *(float*)output = *(const float*)arg1 + *(const float*)arg2;
-            else if (op == '-') *(float*)output = *(const float*)arg1 - *(const float*)arg2;
-            return;
-        case ImGuiDataType_Double:
-            if (op == '+')      *(double*)output = *(const double*)arg1 + *(const double*)arg2;
-            else if (op == '-') *(double*)output = *(const double*)arg1 - *(const double*)arg2;
-            return;
-        case ImGuiDataType_COUNT: break;
-    }
-    IM_ASSERT(0);
-}
-
-struct ImGuiDataTypeInfo
-{
-    size_t      Size;
-    const char* PrintFmt;   // Unused
-    const char* ScanFmt;
-};
-
-static const ImGuiDataTypeInfo GDataTypeInfo[] =
-{
-    { sizeof(int),          "%d",   "%d"    },
-    { sizeof(unsigned int), "%u",   "%u"    },
-#ifdef _MSC_VER
-    { sizeof(ImS64),        "%I64d","%I64d" },
-    { sizeof(ImU64),        "%I64u","%I64u" },
-#else
-    { sizeof(ImS64),        "%lld", "%lld"  },
-    { sizeof(ImU64),        "%llu", "%llu"  },
-#endif
-    { sizeof(float),        "%f",   "%f"    },  // float are promoted to double in va_arg
-    { sizeof(double),       "%f",   "%lf"   },
-};
-IM_STATIC_ASSERT(IM_ARRAYSIZE(GDataTypeInfo) == ImGuiDataType_COUNT);
-
-// User can input math operators (e.g. +100) to edit a numerical values.
-// NB: This is _not_ a full expression evaluator. We should probably add one and replace this dumb mess..
-static bool DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format)
-{
-    while (ImCharIsBlankA(*buf))
-        buf++;
-
-    // We don't support '-' op because it would conflict with inputing negative value.
-    // Instead you can use +-100 to subtract from an existing value
-    char op = buf[0];
-    if (op == '+' || op == '*' || op == '/')
-    {
-        buf++;
-        while (ImCharIsBlankA(*buf))
-            buf++;
-    }
-    else
-    {
-        op = 0;
-    }
-    if (!buf[0])
-        return false;
-
-    // Copy the value in an opaque buffer so we can compare at the end of the function if it changed at all.
-    IM_ASSERT(data_type < ImGuiDataType_COUNT);
-    int data_backup[2];
-    IM_ASSERT(GDataTypeInfo[data_type].Size <= sizeof(data_backup));
-    memcpy(data_backup, data_ptr, GDataTypeInfo[data_type].Size);
-
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].ScanFmt;
-
-    int arg1i = 0;
-    if (data_type == ImGuiDataType_S32)
-    {
-        int* v = (int*)data_ptr;
-        int arg0i = *v;
-        float arg1f = 0.0f;
-        if (op && sscanf(initial_value_buf, format, &arg0i) < 1)
-            return false;
-        // Store operand in a float so we can use fractional value for multipliers (*1.1), but constant always parsed as integer so we can fit big integers (e.g. 2000000003) past float precision
-        if (op == '+')      { if (sscanf(buf, "%d", &arg1i)) *v = (int)(arg0i + arg1i); }                   // Add (use "+-" to subtract)
-        else if (op == '*') { if (sscanf(buf, "%f", &arg1f)) *v = (int)(arg0i * arg1f); }                   // Multiply
-        else if (op == '/') { if (sscanf(buf, "%f", &arg1f) && arg1f != 0.0f) *v = (int)(arg0i / arg1f); }  // Divide
-        else                { if (sscanf(buf, format, &arg1i) == 1) *v = arg1i; }                           // Assign constant
-    }
-    else if (data_type == ImGuiDataType_U32 || data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)
-    {
-        // Assign constant
-        // FIXME: We don't bother handling support for legacy operators since they are a little too crappy. Instead we may implement a proper expression evaluator in the future.
-        sscanf(buf, format, data_ptr);
-    }
-    else if (data_type == ImGuiDataType_Float)
-    {
-        // For floats we have to ignore format with precision (e.g. "%.2f") because sscanf doesn't take them in
-        format = "%f";
-        float* v = (float*)data_ptr;
-        float arg0f = *v, arg1f = 0.0f;
-        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
-            return false;
-        if (sscanf(buf, format, &arg1f) < 1)
-            return false;
-        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
-        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
-        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
-        else                { *v = arg1f; }                            // Assign constant
-    }
-    else if (data_type == ImGuiDataType_Double)
-    {
-        format = "%lf"; // scanf differentiate float/double unlike printf which forces everything to double because of ellipsis
-        double* v = (double*)data_ptr;
-        double arg0f = *v, arg1f = 0.0;
-        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
-            return false;
-        if (sscanf(buf, format, &arg1f) < 1)
-            return false;
-        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
-        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
-        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
-        else                { *v = arg1f; }                            // Assign constant
-    }
-    return memcmp(data_backup, data_ptr, GDataTypeInfo[data_type].Size) != 0;
-}
-
-// Create text input in place of a slider (when CTRL+Clicking on slider)
-// FIXME: Logic is messy and confusing.
-bool ImGui::InputScalarAsWidgetReplacement(const ImRect& bb, ImGuiID id, const char* label, ImGuiDataType data_type, void* data_ptr, const char* format)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-
-    // Our replacement widget will override the focus ID (registered previously to allow for a TAB focus to happen)
-    // On the first frame, g.ScalarAsInputTextId == 0, then on subsequent frames it becomes == id
-    SetActiveID(g.ScalarAsInputTextId, window);
-    g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-    SetHoveredID(0);
-    FocusableItemUnregister(window);
-
-    char fmt_buf[32];
-    char data_buf[32];
-    format = ImParseFormatTrimDecorations(format, fmt_buf, IM_ARRAYSIZE(fmt_buf));
-    DataTypeFormatString(data_buf, IM_ARRAYSIZE(data_buf), data_type, data_ptr, format);
-    ImStrTrimBlanks(data_buf);
-    ImGuiInputTextFlags flags = ImGuiInputTextFlags_AutoSelectAll | ((data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImGuiInputTextFlags_CharsScientific : ImGuiInputTextFlags_CharsDecimal);
-    bool value_changed = InputTextEx(label, data_buf, IM_ARRAYSIZE(data_buf), bb.GetSize(), flags);
-    if (g.ScalarAsInputTextId == 0)     // First frame we started displaying the InputText widget
-    {
-        IM_ASSERT(g.ActiveId == id);    // InputText ID expected to match the Slider ID
-        g.ScalarAsInputTextId = g.ActiveId;
-        SetHoveredID(id);
-    }
-    if (value_changed)
-        return DataTypeApplyOpFromText(data_buf, g.InputTextState.InitialText.Data, data_type, data_ptr, NULL);
-    return false;
-}
-
-// We don't use strchr() because our strings are usually very short and often start with '%'
-const char* ImParseFormatFindStart(const char* fmt)
-{
-    while (char c = fmt[0])
-    {
-        if (c == '%' && fmt[1] != '%')
-            return fmt;
-        else if (c == '%')
-            fmt++;
-        fmt++;
-    }
-    return fmt;
-}
-
-const char* ImParseFormatFindEnd(const char* fmt)
-{
-    // Printf/scanf types modifiers: I/L/h/j/l/t/w/z. Other uppercase letters qualify as types aka end of the format.
-    if (fmt[0] != '%')
-        return fmt;
-    const unsigned int ignored_uppercase_mask = (1 << ('I'-'A')) | (1 << ('L'-'A'));
-    const unsigned int ignored_lowercase_mask = (1 << ('h'-'a')) | (1 << ('j'-'a')) | (1 << ('l'-'a')) | (1 << ('t'-'a')) | (1 << ('w'-'a')) | (1 << ('z'-'a'));
-    for (char c; (c = *fmt) != 0; fmt++)
-    {
-        if (c >= 'A' && c <= 'Z' && ((1 << (c - 'A')) & ignored_uppercase_mask) == 0)
-            return fmt + 1;
-        if (c >= 'a' && c <= 'z' && ((1 << (c - 'a')) & ignored_lowercase_mask) == 0)
-            return fmt + 1;
-    }
-    return fmt;
-}
-
-// Extract the format out of a format string with leading or trailing decorations
-//  fmt = "blah blah"  -> return fmt
-//  fmt = "%.3f"       -> return fmt
-//  fmt = "hello %.3f" -> return fmt + 6
-//  fmt = "%.3f hello" -> return buf written with "%.3f"
-const char* ImParseFormatTrimDecorations(const char* fmt, char* buf, int buf_size)
-{
-    const char* fmt_start = ImParseFormatFindStart(fmt);
-    if (fmt_start[0] != '%')
-        return fmt;
-    const char* fmt_end = ImParseFormatFindEnd(fmt_start);
-    if (fmt_end[0] == 0) // If we only have leading decoration, we don't need to copy the data.
-        return fmt_start;
-    ImStrncpy(buf, fmt_start, ImMin((int)(fmt_end + 1 - fmt_start), buf_size));
-    return buf;
-}
-
-// Parse display precision back from the display format string
-// FIXME: This is still used by some navigation code path to infer a minimum tweak step, but we should aim to rework widgets so it isn't needed.
-int ImParseFormatPrecision(const char* fmt, int default_precision)
-{
-    fmt = ImParseFormatFindStart(fmt);
-    if (fmt[0] != '%')
-        return default_precision;
-    fmt++;
-    while (*fmt >= '0' && *fmt <= '9')
-        fmt++;
-    int precision = INT_MAX;
-    if (*fmt == '.')
-    {
-        fmt = ImAtoi<int>(fmt + 1, &precision);
-        if (precision < 0 || precision > 99)
-            precision = default_precision;
-    }
-    if (*fmt == 'e' || *fmt == 'E') // Maximum precision with scientific notation
-        precision = -1;
-    if ((*fmt == 'g' || *fmt == 'G') && precision == INT_MAX)
-        precision = -1;
-    return (precision == INT_MAX) ? default_precision : precision;
-}
-
-static float GetMinimumStepAtDecimalPrecision(int decimal_precision)
-{
-    static const float min_steps[10] = { 1.0f, 0.1f, 0.01f, 0.001f, 0.0001f, 0.00001f, 0.000001f, 0.0000001f, 0.00000001f, 0.000000001f };
-    if (decimal_precision < 0)
-        return FLT_MIN;
-    return (decimal_precision >= 0 && decimal_precision < 10) ? min_steps[decimal_precision] : ImPow(10.0f, (float)-decimal_precision);
-}
-
-template<typename TYPE, typename SIGNEDTYPE>
-static inline TYPE RoundScalarWithFormat(const char* format, ImGuiDataType data_type, TYPE v)
-{
-    const char* fmt_start = ImParseFormatFindStart(format);
-    if (fmt_start[0] != '%' || fmt_start[1] == '%') // Don't apply if the value is not visible in the format string
-        return v;
-    char v_str[64];
-    ImFormatString(v_str, IM_ARRAYSIZE(v_str), fmt_start, v);
-    const char* p = v_str;
-    while (*p == ' ')
-        p++;
-    if (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double)
-        v = (TYPE)ImAtof(p);
-    else
-        ImAtoi(p, (SIGNEDTYPE*)&v);
-    return v;
-}
-
-template<typename TYPE, typename FLOATTYPE>
-static inline float SliderBehaviorCalcRatioFromValue(ImGuiDataType data_type, TYPE v, TYPE v_min, TYPE v_max, float power, float linear_zero_pos)
-{
-    if (v_min == v_max)
-        return 0.0f;
-
-    const bool is_power = (power != 1.0f) && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double);
-    const TYPE v_clamped = (v_min < v_max) ? ImClamp(v, v_min, v_max) : ImClamp(v, v_max, v_min);
-    if (is_power)
-    {
-        if (v_clamped < 0.0f)
-        {
-            const float f = 1.0f - (float)((v_clamped - v_min) / (ImMin((TYPE)0, v_max) - v_min));
-            return (1.0f - ImPow(f, 1.0f/power)) * linear_zero_pos;
-        }
-        else
-        {
-            const float f = (float)((v_clamped - ImMax((TYPE)0, v_min)) / (v_max - ImMax((TYPE)0, v_min)));
-            return linear_zero_pos + ImPow(f, 1.0f/power) * (1.0f - linear_zero_pos);
-        }
-    }
-
-    // Linear slider
-    return (float)((FLOATTYPE)(v_clamped - v_min) / (FLOATTYPE)(v_max - v_min));
-}
-
-// FIXME: Move some of the code into SliderBehavior(). Current responsability is larger than what the equivalent DragBehaviorT<> does, we also do some rendering, etc.
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
-{
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const bool is_horizontal = (flags & ImGuiSliderFlags_Vertical) == 0;
-    const bool is_decimal = (data_type == ImGuiDataType_Float) || (data_type == ImGuiDataType_Double);
-    const bool is_power = (power != 1.0f) && is_decimal;
-
-    const float grab_padding = 2.0f;
-    const float slider_sz = is_horizontal ? (bb.GetWidth() - grab_padding * 2.0f) : (bb.GetHeight() - grab_padding * 2.0f);
-    float grab_sz = style.GrabMinSize;
-    SIGNEDTYPE v_range = (v_min < v_max ? v_max - v_min : v_min - v_max);
-    if (!is_decimal && v_range >= 0)                                             // v_range < 0 may happen on integer overflows
-        grab_sz = ImMax((float)(slider_sz / (v_range + 1)), style.GrabMinSize);  // For integer sliders: if possible have the grab size represent 1 unit
-    grab_sz = ImMin(grab_sz, slider_sz);
-    const float slider_usable_sz = slider_sz - grab_sz;
-    const float slider_usable_pos_min = (is_horizontal ? bb.Min.x : bb.Min.y) + grab_padding + grab_sz*0.5f;
-    const float slider_usable_pos_max = (is_horizontal ? bb.Max.x : bb.Max.y) - grab_padding - grab_sz*0.5f;
-
-    // For power curve sliders that cross over sign boundary we want the curve to be symmetric around 0.0f
-    float linear_zero_pos;   // 0.0->1.0f
-    if (is_power && v_min * v_max < 0.0f)
-    {
-        // Different sign
-        const FLOATTYPE linear_dist_min_to_0 = ImPow(v_min >= 0 ? (FLOATTYPE)v_min : -(FLOATTYPE)v_min, (FLOATTYPE)1.0f/power);
-        const FLOATTYPE linear_dist_max_to_0 = ImPow(v_max >= 0 ? (FLOATTYPE)v_max : -(FLOATTYPE)v_max, (FLOATTYPE)1.0f/power);
-        linear_zero_pos = (float)(linear_dist_min_to_0 / (linear_dist_min_to_0 + linear_dist_max_to_0));
-    }
-    else
-    {
-        // Same sign
-        linear_zero_pos = v_min < 0.0f ? 1.0f : 0.0f;
-    }
-
-    // Process interacting with the slider
-    bool value_changed = false;
-    if (g.ActiveId == id)
-    {
-        bool set_new_value = false;
-        float clicked_t = 0.0f;
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
-        {
-            if (!g.IO.MouseDown[0])
-            {
-                ClearActiveID();
-            }
-            else
-            {
-                const float mouse_abs_pos = is_horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
-                clicked_t = (slider_usable_sz > 0.0f) ? ImClamp((mouse_abs_pos - slider_usable_pos_min) / slider_usable_sz, 0.0f, 1.0f) : 0.0f;
-                if (!is_horizontal)
-                    clicked_t = 1.0f - clicked_t;
-                set_new_value = true;
-            }
-        }
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-        {
-            const ImVec2 delta2 = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard | ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 0.0f, 0.0f);
-            float delta = is_horizontal ? delta2.x : -delta2.y;
-            if (g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
-            {
-                ClearActiveID();
-            }
-            else if (delta != 0.0f)
-            {
-                clicked_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
-                const int decimal_precision = is_decimal ? ImParseFormatPrecision(format, 3) : 0;
-                if ((decimal_precision > 0) || is_power)
-                {
-                    delta /= 100.0f;    // Gamepad/keyboard tweak speeds in % of slider bounds
-                    if (IsNavInputDown(ImGuiNavInput_TweakSlow))
-                        delta /= 10.0f;
-                }
-                else
-                {
-                    if ((v_range >= -100.0f && v_range <= 100.0f) || IsNavInputDown(ImGuiNavInput_TweakSlow))
-                        delta = ((delta < 0.0f) ? -1.0f : +1.0f) / (float)v_range; // Gamepad/keyboard tweak speeds in integer steps
-                    else
-                        delta /= 100.0f;
-                }
-                if (IsNavInputDown(ImGuiNavInput_TweakFast))
-                    delta *= 10.0f;
-                set_new_value = true;
-                if ((clicked_t >= 1.0f && delta > 0.0f) || (clicked_t <= 0.0f && delta < 0.0f)) // This is to avoid applying the saturation when already past the limits
-                    set_new_value = false;
-                else
-                    clicked_t = ImSaturate(clicked_t + delta);
-            }
-        }
-
-        if (set_new_value)
-        {
-            TYPE v_new;
-            if (is_power)
-            {
-                // Account for power curve scale on both sides of the zero
-                if (clicked_t < linear_zero_pos)
-                {
-                    // Negative: rescale to the negative range before powering
-                    float a = 1.0f - (clicked_t / linear_zero_pos);
-                    a = ImPow(a, power);
-                    v_new = ImLerp(ImMin(v_max, (TYPE)0), v_min, a);
-                }
-                else
-                {
-                    // Positive: rescale to the positive range before powering
-                    float a;
-                    if (ImFabs(linear_zero_pos - 1.0f) > 1.e-6f)
-                        a = (clicked_t - linear_zero_pos) / (1.0f - linear_zero_pos);
-                    else
-                        a = clicked_t;
-                    a = ImPow(a, power);
-                    v_new = ImLerp(ImMax(v_min, (TYPE)0), v_max, a);
-                }
-            }
-            else
-            {
-                // Linear slider
-                if (is_decimal)
-                {
-                    v_new = ImLerp(v_min, v_max, clicked_t);
-                }
-                else
-                {
-                    // For integer values we want the clicking position to match the grab box so we round above
-                    // This code is carefully tuned to work with large values (e.g. high ranges of U64) while preserving this property..
-                    FLOATTYPE v_new_off_f = (v_max - v_min) * clicked_t;
-                    TYPE v_new_off_floor = (TYPE)(v_new_off_f);
-                    TYPE v_new_off_round = (TYPE)(v_new_off_f + (FLOATTYPE)0.5);
-                    if (!is_decimal && v_new_off_floor < v_new_off_round)
-                        v_new = v_min + v_new_off_round;
-                    else
-                        v_new = v_min + v_new_off_floor;
-                }
-            }
-
-            // Round to user desired precision based on format string
-            v_new = RoundScalarWithFormat<TYPE,SIGNEDTYPE>(format, data_type, v_new);
-
-            // Apply result
-            if (*v != v_new)
-            {
-                *v = v_new;
-                value_changed = true;
-            }
-        }
-    }
-
-    // Output grab position so it can be displayed by the caller
-    float grab_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
-    if (!is_horizontal)
-        grab_t = 1.0f - grab_t;
-    const float grab_pos = ImLerp(slider_usable_pos_min, slider_usable_pos_max, grab_t);
-    if (is_horizontal)
-        *out_grab_bb = ImRect(grab_pos - grab_sz*0.5f, bb.Min.y + grab_padding, grab_pos + grab_sz*0.5f, bb.Max.y - grab_padding);
-    else
-        *out_grab_bb = ImRect(bb.Min.x + grab_padding, grab_pos - grab_sz*0.5f, bb.Max.x - grab_padding, grab_pos + grab_sz*0.5f);
-
-    return value_changed;
-}
-
-// For 32-bits and larger types, slider bounds are limited to half the natural type range.
-// So e.g. an integer Slider between INT_MAX-10 and INT_MAX will fail, but an integer Slider between INT_MAX/2-10 and INT_MAX/2 will be ok.
-// It would be possible to lift that limitation with some work but it doesn't seem to be worth it for sliders.
-bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
-{
-    switch (data_type)
-    {
-    case ImGuiDataType_S32:
-        IM_ASSERT(*(const ImS32*)v_min >= IM_S32_MIN/2 && *(const ImS32*)v_max <= IM_S32_MAX/2);
-        return SliderBehaviorT<ImS32, ImS32, float >(bb, id, data_type, (ImS32*)v,  *(const ImS32*)v_min,  *(const ImS32*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_U32:
-        IM_ASSERT(*(const ImU32*)v_min <= IM_U32_MAX/2);
-        return SliderBehaviorT<ImU32, ImS32, float >(bb, id, data_type, (ImU32*)v,  *(const ImU32*)v_min,  *(const ImU32*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_S64:
-        IM_ASSERT(*(const ImS64*)v_min >= IM_S64_MIN/2 && *(const ImS64*)v_max <= IM_S64_MAX/2);
-        return SliderBehaviorT<ImS64, ImS64, double>(bb, id, data_type, (ImS64*)v,  *(const ImS64*)v_min,  *(const ImS64*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_U64:
-        IM_ASSERT(*(const ImU64*)v_min <= IM_U64_MAX/2);
-        return SliderBehaviorT<ImU64, ImS64, double>(bb, id, data_type, (ImU64*)v,  *(const ImU64*)v_min,  *(const ImU64*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_Float:
-        IM_ASSERT(*(const float*)v_min >= -FLT_MAX/2.0f && *(const float*)v_max <= FLT_MAX/2.0f);
-        return SliderBehaviorT<float, float, float >(bb, id, data_type, (float*)v,  *(const float*)v_min,  *(const float*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_Double:
-        IM_ASSERT(*(const double*)v_min >= -DBL_MAX/2.0f && *(const double*)v_max <= DBL_MAX/2.0f);
-        return SliderBehaviorT<double,double,double>(bb, id, data_type, (double*)v, *(const double*)v_min, *(const double*)v_max, format, power, flags, out_grab_bb);
-    case ImGuiDataType_COUNT: break;
-    }
-    IM_ASSERT(0);
-    return false;
-}
-
-// FIXME-LEGACY: Prior to 1.61 our DragInt() function internally used floats and because of this the compile-time default value for format was "%.0f".
-// Even though we changed the compile-time default, we expect users to have carried %f around, which would break the display of DragInt() calls.
-// To honor backward compatibility we are rewriting the format string, unless IMGUI_DISABLE_OBSOLETE_FUNCTIONS is enabled. What could possibly go wrong?!
-static const char* PatchFormatStringFloatToInt(const char* fmt)
-{
-    if (fmt[0] == '%' && fmt[1] == '.' && fmt[2] == '0' && fmt[3] == 'f' && fmt[4] == 0) // Fast legacy path for "%.0f" which is expected to be the most common case.
-        return "%d";
-    const char* fmt_start = ImParseFormatFindStart(fmt);    // Find % (if any, and ignore %%)
-    const char* fmt_end = ImParseFormatFindEnd(fmt_start);  // Find end of format specifier, which itself is an exercise of confidence/recklessness (because snprintf is dependent on libc or user).
-    if (fmt_end > fmt_start && fmt_end[-1] == 'f')
-    {
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-        if (fmt_start == fmt && fmt_end[0] == 0)
-            return "%d";
-        ImGuiContext& g = *GImGui;
-        ImFormatString(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), "%.*s%%d%s", (int)(fmt_start - fmt), fmt, fmt_end); // Honor leading and trailing decorations, but lose alignment/precision.
-        return g.TempBuffer;
-#else
-        IM_ASSERT(0 && "DragInt(): Invalid format string!"); // Old versions used a default parameter of "%.0f", please replace with e.g. "%d"
-#endif
-    }
-    return fmt;
-}
-
-bool ImGui::SliderScalar(const char* label, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
-    if (!ItemAdd(total_bb, id, &frame_bb))
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        return false;
-    }
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    // Tabbing or CTRL-clicking on Slider turns it into an input box
-    bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, id);
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if (tab_focus_requested || (hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        if (tab_focus_requested || g.IO.KeyCtrl || g.NavInputId == id)
-        {
-            start_text_input = true;
-            g.ScalarAsInputTextId = 0;
-        }
-    }
-    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
-        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
-
-    ItemSize(total_bb, style.FramePadding.y);
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
-
-    // Slider behavior
-    ImRect grab_bb;
-    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_None, &grab_bb);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Render grab
-    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.5f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalar(label, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
-}
-
-bool ImGui::VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(frame_bb, id))
-        return false;
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if ((hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || g.NavInputId == id)
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right);
-    }
-
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
-
-    // Slider behavior
-    ImRect grab_bb;
-    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_Vertical, &grab_bb);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Render grab
-    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    // For the vertical slider we allow centered text to overlap the frame padding
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.0f));
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::SliderAngle(const char* label, float* v_rad, float v_degrees_min, float v_degrees_max)
-{
-    float v_deg = (*v_rad) * 360.0f / (2*IM_PI);
-    bool value_changed = SliderFloat(label, &v_deg, v_degrees_min, v_degrees_max, "%.0f deg", 1.0f);
-    *v_rad = v_deg * (2*IM_PI) / 360.0f;
-    return value_changed;
-}
-
-bool ImGui::SliderInt(const char* label, int* v, int v_min, int v_max, const char* format)
-{
-    return SliderScalar(label, ImGuiDataType_S32, v, &v_min, &v_max, format);
-}
-
-bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* format, float power)
-{
-    return VSliderScalar(label, size, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
-}
-
-bool ImGui::VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format)
-{
-    return VSliderScalar(label, size, ImGuiDataType_S32, v, &v_min, &v_max, format);
-}
-
-// Add multiple sliders on 1 line for compact edition of multiple components
-bool ImGui::SliderScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= SliderScalar("##v", data_type, v, v_min, v_max, format, power);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 2, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 3, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 4, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 2, &v_min, &v_max, format);
-}
-
-bool ImGui::SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 3, &v_min, &v_max, format);
-}
-
-bool ImGui::SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 4, &v_min, &v_max, format);
-}
-
-// This is called by DragBehavior() when the widget is active (held by mouse or being manipulated with Nav controls)
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power)
-{
-    ImGuiContext& g = *GImGui;
-
-    // Default tweak speed
-    bool has_min_max = (v_min != v_max) && (v_max - v_max < FLT_MAX);
-    if (v_speed == 0.0f && has_min_max)
-        v_speed = (float)((v_max - v_min) * g.DragSpeedDefaultRatio);
-
-    // Inputs accumulates into g.DragCurrentAccum, which is flushed into the current value as soon as it makes a difference with our precision settings
-    float adjust_delta = 0.0f;
-    if (g.ActiveIdSource == ImGuiInputSource_Mouse && IsMousePosValid() && g.IO.MouseDragMaxDistanceSqr[0] > 1.0f*1.0f)
-    {
-        adjust_delta = g.IO.MouseDelta.x;
-        if (g.IO.KeyAlt)
-            adjust_delta *= 1.0f/100.0f;
-        if (g.IO.KeyShift)
-            adjust_delta *= 10.0f;
-    }
-    else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-    {
-        int decimal_precision = (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImParseFormatPrecision(format, 3) : 0;
-        adjust_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard|ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 1.0f/10.0f, 10.0f).x;
-        v_speed = ImMax(v_speed, GetMinimumStepAtDecimalPrecision(decimal_precision));
-    }
-    adjust_delta *= v_speed;
-
-    // Clear current value on activation
-    // Avoid altering values and clamping when we are _already_ past the limits and heading in the same direction, so e.g. if range is 0..255, current value is 300 and we are pushing to the right side, keep the 300.
-    bool is_just_activated = g.ActiveIdIsJustActivated;
-    bool is_already_past_limits_and_pushing_outward = has_min_max && ((*v >= v_max && adjust_delta > 0.0f) || (*v <= v_min && adjust_delta < 0.0f));
-    if (is_just_activated || is_already_past_limits_and_pushing_outward)
-    {
-        g.DragCurrentAccum = 0.0f;
-        g.DragCurrentAccumDirty = false;
-    }
-    else if (adjust_delta != 0.0f)
-    {
-        g.DragCurrentAccum += adjust_delta;
-        g.DragCurrentAccumDirty = true;
-    }
-
-    if (!g.DragCurrentAccumDirty)
-        return false;
-
-    TYPE v_cur = *v;
-    FLOATTYPE v_old_ref_for_accum_remainder = (FLOATTYPE)0.0f;
-
-    const bool is_power = (power != 1.0f && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) && has_min_max);
-    if (is_power)
-    {
-        // Offset + round to user desired precision, with a curve on the v_min..v_max range to get more precision on one side of the range
-        FLOATTYPE v_old_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
-        FLOATTYPE v_new_norm_curved = v_old_norm_curved + (g.DragCurrentAccum / (v_max - v_min));
-        v_cur = v_min + (TYPE)ImPow(ImSaturate((float)v_new_norm_curved), power) * (v_max - v_min);
-        v_old_ref_for_accum_remainder = v_old_norm_curved;
-    }
-    else
-    {
-        v_cur += (TYPE)g.DragCurrentAccum;
-    }
-
-    // Round to user desired precision based on format string
-    v_cur = RoundScalarWithFormat<TYPE, SIGNEDTYPE>(format, data_type, v_cur);
-
-    // Preserve remainder after rounding has been applied. This also allow slow tweaking of values.
-    g.DragCurrentAccumDirty = false;
-    if (is_power)
-    {
-        FLOATTYPE v_cur_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
-        g.DragCurrentAccum -= (float)(v_cur_norm_curved - v_old_ref_for_accum_remainder);
-    }
-    else
-    {
-        g.DragCurrentAccum -= (float)((SIGNEDTYPE)v_cur - (SIGNEDTYPE)*v);
-    }
-
-    // Lose zero sign for float/double
-    if (v_cur == (TYPE)-0)
-        v_cur = (TYPE)0;
-
-    // Clamp values (handle overflow/wrap-around)
-    if (*v != v_cur && has_min_max)
-    {
-        if (v_cur < v_min || (v_cur > *v && adjust_delta < 0.0f))
-            v_cur = v_min;
-        if (v_cur > v_max || (v_cur < *v && adjust_delta > 0.0f))
-            v_cur = v_max;
-    }
-
-    // Apply result
-    if (*v == v_cur)
-        return false;
-    *v = v_cur;
-    return true;
-}
-
-bool ImGui::DragBehavior(ImGuiID id, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.ActiveId == id)
-    {
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse && !g.IO.MouseDown[0])
-            ClearActiveID();
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav && g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
-            ClearActiveID();
-    }
-    if (g.ActiveId != id)
-        return false;
-
-    switch (data_type)
-    {
-    case ImGuiDataType_S32:    return DragBehaviorT<ImS32, ImS32, float >(data_type, (ImS32*)v,  v_speed, v_min ? *(const ImS32* )v_min : IM_S32_MIN, v_max ? *(const ImS32* )v_max : IM_S32_MAX, format, power);
-    case ImGuiDataType_U32:    return DragBehaviorT<ImU32, ImS32, float >(data_type, (ImU32*)v,  v_speed, v_min ? *(const ImU32* )v_min : IM_U32_MIN, v_max ? *(const ImU32* )v_max : IM_U32_MAX, format, power);
-    case ImGuiDataType_S64:    return DragBehaviorT<ImS64, ImS64, double>(data_type, (ImS64*)v,  v_speed, v_min ? *(const ImS64* )v_min : IM_S64_MIN, v_max ? *(const ImS64* )v_max : IM_S64_MAX, format, power);
-    case ImGuiDataType_U64:    return DragBehaviorT<ImU64, ImS64, double>(data_type, (ImU64*)v,  v_speed, v_min ? *(const ImU64* )v_min : IM_U64_MIN, v_max ? *(const ImU64* )v_max : IM_U64_MAX, format, power);
-    case ImGuiDataType_Float:  return DragBehaviorT<float, float, float >(data_type, (float*)v,  v_speed, v_min ? *(const float* )v_min : -FLT_MAX,   v_max ? *(const float* )v_max : FLT_MAX,    format, power);
-    case ImGuiDataType_Double: return DragBehaviorT<double,double,double>(data_type, (double*)v, v_speed, v_min ? *(const double*)v_min : -DBL_MAX,   v_max ? *(const double*)v_max : DBL_MAX,    format, power);
-    case ImGuiDataType_COUNT:  break;
-    }
-    IM_ASSERT(0);
-    return false;
-}
-
-bool ImGui::DragScalar(const char* label, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    if (power != 1.0f)
-        IM_ASSERT(v_min != NULL && v_max != NULL); // When using a power curve the drag needs to have known bounds
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
-    if (!ItemAdd(total_bb, id, &frame_bb))
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        return false;
-    }
-    const bool hovered = ItemHoverable(frame_bb, id);
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    // Tabbing or CTRL-clicking on Drag turns it into an input box
-    bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, id);
-    if (tab_focus_requested || (hovered && (g.IO.MouseClicked[0] || g.IO.MouseDoubleClicked[0])) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        if (tab_focus_requested || g.IO.KeyCtrl || g.IO.MouseDoubleClicked[0] || g.NavInputId == id)
-        {
-            start_text_input = true;
-            g.ScalarAsInputTextId = 0;
-        }
-    }
-    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
-        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
-
-    // Actual drag behavior
-    ItemSize(total_bb, style.FramePadding.y);
-    const bool value_changed = DragBehavior(id, data_type, v, v_speed, v_min, v_max, format, power);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, style.FrameRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f, 0.5f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::DragScalarN(const char* label, ImGuiDataType data_type, void* v, int components, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= DragScalar("##v", data_type, v, v_speed, v_min, v_max, format, power);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::DragFloat(const char* label, float* v, float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalar(label, ImGuiDataType_Float, v, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat2(const char* label, float v[2], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 2, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat3(const char* label, float v[3], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 3, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat4(const char* label, float v[4], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 4, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloatRange2(const char* label, float* v_current_min, float* v_current_max, float v_speed, float v_min, float v_max, const char* format, const char* format_max, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    PushID(label);
-    BeginGroup();
-    PushMultiItemsWidths(2);
-
-    bool value_changed = DragFloat("##min", v_current_min, v_speed, (v_min >= v_max) ? -FLT_MAX : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format, power);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-    value_changed |= DragFloat("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? FLT_MAX : v_max, format_max ? format_max : format, power);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    PopID();
-    return value_changed;
-}
-
-// NB: v_speed is float to allow adjusting the drag speed with more precision
-bool ImGui::DragInt(const char* label, int* v, float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalar(label, ImGuiDataType_S32, v, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt2(const char* label, int v[2], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 2, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt3(const char* label, int v[3], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 3, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt4(const char* label, int v[4], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 4, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragIntRange2(const char* label, int* v_current_min, int* v_current_max, float v_speed, int v_min, int v_max, const char* format, const char* format_max)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    PushID(label);
-    BeginGroup();
-    PushMultiItemsWidths(2);
-
-    bool value_changed = DragInt("##min", v_current_min, v_speed, (v_min >= v_max) ? INT_MIN : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-    value_changed |= DragInt("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? INT_MAX : v_max, format_max ? format_max : format);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    PopID();
-
-    return value_changed;
-}
-
-void ImGui::PlotEx(ImGuiPlotType plot_type, const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    if (graph_size.x == 0.0f)
-        graph_size.x = CalcItemWidth();
-    if (graph_size.y == 0.0f)
-        graph_size.y = label_size.y + (style.FramePadding.y * 2);
-
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(graph_size.x, graph_size.y));
-    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0));
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, 0, &frame_bb))
-        return;
-    const bool hovered = ItemHoverable(inner_bb, 0);
-
-    // Determine scale from values if not specified
-    if (scale_min == FLT_MAX || scale_max == FLT_MAX)
-    {
-        float v_min = FLT_MAX;
-        float v_max = -FLT_MAX;
-        for (int i = 0; i < values_count; i++)
-        {
-            const float v = values_getter(data, i);
-            v_min = ImMin(v_min, v);
-            v_max = ImMax(v_max, v);
-        }
-        if (scale_min == FLT_MAX)
-            scale_min = v_min;
-        if (scale_max == FLT_MAX)
-            scale_max = v_max;
-    }
-
-    RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-
-    if (values_count > 0)
-    {
-        int res_w = ImMin((int)graph_size.x, values_count) + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
-        int item_count = values_count + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
-
-        // Tooltip on hover
-        int v_hovered = -1;
-        if (hovered)
-        {
-            const float t = ImClamp((g.IO.MousePos.x - inner_bb.Min.x) / (inner_bb.Max.x - inner_bb.Min.x), 0.0f, 0.9999f);
-            const int v_idx = (int)(t * item_count);
-            IM_ASSERT(v_idx >= 0 && v_idx < values_count);
-
-            const float v0 = values_getter(data, (v_idx + values_offset) % values_count);
-            const float v1 = values_getter(data, (v_idx + 1 + values_offset) % values_count);
-            if (plot_type == ImGuiPlotType_Lines)
-                SetTooltip("%d: %8.4g\n%d: %8.4g", v_idx, v0, v_idx+1, v1);
-            else if (plot_type == ImGuiPlotType_Histogram)
-                SetTooltip("%d: %8.4g", v_idx, v0);
-            v_hovered = v_idx;
-        }
-
-        const float t_step = 1.0f / (float)res_w;
-        const float inv_scale = (scale_min == scale_max) ? 0.0f : (1.0f / (scale_max - scale_min));
-
-        float v0 = values_getter(data, (0 + values_offset) % values_count);
-        float t0 = 0.0f;
-        ImVec2 tp0 = ImVec2( t0, 1.0f - ImSaturate((v0 - scale_min) * inv_scale) );                       // Point in the normalized space of our target rectangle
-        float histogram_zero_line_t = (scale_min * scale_max < 0.0f) ? (-scale_min * inv_scale) : (scale_min < 0.0f ? 0.0f : 1.0f);   // Where does the zero line stands
-
-        const ImU32 col_base = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLines : ImGuiCol_PlotHistogram);
-        const ImU32 col_hovered = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLinesHovered : ImGuiCol_PlotHistogramHovered);
-
-        for (int n = 0; n < res_w; n++)
-        {
-            const float t1 = t0 + t_step;
-            const int v1_idx = (int)(t0 * item_count + 0.5f);
-            IM_ASSERT(v1_idx >= 0 && v1_idx < values_count);
-            const float v1 = values_getter(data, (v1_idx + values_offset + 1) % values_count);
-            const ImVec2 tp1 = ImVec2( t1, 1.0f - ImSaturate((v1 - scale_min) * inv_scale) );
-
-            // NB: Draw calls are merged together by the DrawList system. Still, we should render our batch are lower level to save a bit of CPU.
-            ImVec2 pos0 = ImLerp(inner_bb.Min, inner_bb.Max, tp0);
-            ImVec2 pos1 = ImLerp(inner_bb.Min, inner_bb.Max, (plot_type == ImGuiPlotType_Lines) ? tp1 : ImVec2(tp1.x, histogram_zero_line_t));
-            if (plot_type == ImGuiPlotType_Lines)
-            {
-                window->DrawList->AddLine(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
-            }
-            else if (plot_type == ImGuiPlotType_Histogram)
-            {
-                if (pos1.x >= pos0.x + 2.0f)
-                    pos1.x -= 1.0f;
-                window->DrawList->AddRectFilled(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
-            }
-
-            t0 = t1;
-            tp0 = tp1;
-        }
-    }
-
-    // Text overlay
-    if (overlay_text)
-        RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, overlay_text, NULL, NULL, ImVec2(0.5f,0.0f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
-}
-
-struct ImGuiPlotArrayGetterData
-{
-    const float* Values;
-    int Stride;
-
-    ImGuiPlotArrayGetterData(const float* values, int stride) { Values = values; Stride = stride; }
-};
-
-static float Plot_ArrayGetter(void* data, int idx)
-{
-    ImGuiPlotArrayGetterData* plot_data = (ImGuiPlotArrayGetterData*)data;
-    const float v = *(const float*)(const void*)((const unsigned char*)plot_data->Values + (size_t)idx * plot_data->Stride);
-    return v;
-}
-
-void ImGui::PlotLines(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
-{
-    ImGuiPlotArrayGetterData data(values, stride);
-    PlotEx(ImGuiPlotType_Lines, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotLines(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    PlotEx(ImGuiPlotType_Lines, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotHistogram(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
-{
-    ImGuiPlotArrayGetterData data(values, stride);
-    PlotEx(ImGuiPlotType_Histogram, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotHistogram(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    PlotEx(ImGuiPlotType_Histogram, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-// size_arg (for each axis) < 0.0f: align to end, 0.0f: auto, > 0.0f: specified size
-void ImGui::ProgressBar(float fraction, const ImVec2& size_arg, const char* overlay)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    ImVec2 pos = window->DC.CursorPos;
-    ImRect bb(pos, pos + CalcItemSize(size_arg, CalcItemWidth(), g.FontSize + style.FramePadding.y*2.0f));
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    // Render
-    fraction = ImSaturate(fraction);
-    RenderFrame(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-    bb.Expand(ImVec2(-style.FrameBorderSize, -style.FrameBorderSize));
-    const ImVec2 fill_br = ImVec2(ImLerp(bb.Min.x, bb.Max.x, fraction), bb.Max.y);
-    RenderRectFilledRangeH(window->DrawList, bb, GetColorU32(ImGuiCol_PlotHistogram), 0.0f, fraction, style.FrameRounding);
-
-    // Default displaying the fraction as percentage string, but user can override it
-    char overlay_buf[32];
-    if (!overlay)
-    {
-        ImFormatString(overlay_buf, IM_ARRAYSIZE(overlay_buf), "%.0f%%", fraction*100+0.01f);
-        overlay = overlay_buf;
-    }
-
-    ImVec2 overlay_size = CalcTextSize(overlay, NULL);
-    if (overlay_size.x > 0.0f)
-        RenderTextClipped(ImVec2(ImClamp(fill_br.x + style.ItemSpacing.x, bb.Min.x, bb.Max.x - overlay_size.x - style.ItemInnerSpacing.x), bb.Min.y), bb.Max, overlay, NULL, &overlay_size, ImVec2(0.0f,0.5f), &bb);
-}
-
-bool ImGui::Checkbox(const char* label, bool* v)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2, label_size.y + style.FramePadding.y*2)); // We want a square shape to we use Y twice
-    ItemSize(check_bb, style.FramePadding.y);
-
-    ImRect total_bb = check_bb;
-    if (label_size.x > 0)
-        SameLine(0, style.ItemInnerSpacing.x);
-    const ImRect text_bb(window->DC.CursorPos + ImVec2(0,style.FramePadding.y), window->DC.CursorPos + ImVec2(0,style.FramePadding.y) + label_size);
-    if (label_size.x > 0)
-    {
-        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
-        total_bb = ImRect(ImMin(check_bb.Min, text_bb.Min), ImMax(check_bb.Max, text_bb.Max));
-    }
-
-    if (!ItemAdd(total_bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
-    if (pressed)
-    {
-        *v = !(*v);
-        MarkItemEdited(id);
-    }
-
-    RenderNavHighlight(total_bb, id);
-    RenderFrame(check_bb.Min, check_bb.Max, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), true, style.FrameRounding);
-    if (*v)
-    {
-        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
-        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
-        RenderCheckMark(check_bb.Min + ImVec2(pad,pad), GetColorU32(ImGuiCol_CheckMark), check_bb.GetWidth() - pad*2.0f);
-    }
-
-    if (g.LogEnabled)
-        LogRenderedText(&text_bb.Min, *v ? "[x]" : "[ ]");
-    if (label_size.x > 0.0f)
-        RenderText(text_bb.Min, label);
-
-    return pressed;
-}
-
-bool ImGui::CheckboxFlags(const char* label, unsigned int* flags, unsigned int flags_value)
-{
-    bool v = ((*flags & flags_value) == flags_value);
-    bool pressed = Checkbox(label, &v);
-    if (pressed)
-    {
-        if (v)
-            *flags |= flags_value;
-        else
-            *flags &= ~flags_value;
-    }
-
-    return pressed;
-}
-
-bool ImGui::RadioButton(const char* label, bool active)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2-1, label_size.y + style.FramePadding.y*2-1));
-    ItemSize(check_bb, style.FramePadding.y);
-
-    ImRect total_bb = check_bb;
-    if (label_size.x > 0)
-        SameLine(0, style.ItemInnerSpacing.x);
-    const ImRect text_bb(window->DC.CursorPos + ImVec2(0, style.FramePadding.y), window->DC.CursorPos + ImVec2(0, style.FramePadding.y) + label_size);
-    if (label_size.x > 0)
-    {
-        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
-        total_bb.Add(text_bb);
-    }
-
-    if (!ItemAdd(total_bb, id))
-        return false;
-
-    ImVec2 center = check_bb.GetCenter();
-    center.x = (float)(int)center.x + 0.5f;
-    center.y = (float)(int)center.y + 0.5f;
-    const float radius = check_bb.GetHeight() * 0.5f;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
-    if (pressed)
-        MarkItemEdited(id);
-
-    RenderNavHighlight(total_bb, id);
-    window->DrawList->AddCircleFilled(center, radius, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), 16);
-    if (active)
-    {
-        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
-        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
-        window->DrawList->AddCircleFilled(center, radius-pad, GetColorU32(ImGuiCol_CheckMark), 16);
-    }
-
-    if (style.FrameBorderSize > 0.0f)
-    {
-        window->DrawList->AddCircle(center+ImVec2(1,1), radius, GetColorU32(ImGuiCol_BorderShadow), 16, style.FrameBorderSize);
-        window->DrawList->AddCircle(center, radius, GetColorU32(ImGuiCol_Border), 16, style.FrameBorderSize);
-    }
-
-    if (g.LogEnabled)
-        LogRenderedText(&text_bb.Min, active ? "(x)" : "( )");
-    if (label_size.x > 0.0f)
-        RenderText(text_bb.Min, label);
-
-    return pressed;
-}
-
-bool ImGui::RadioButton(const char* label, int* v, int v_button)
-{
-    const bool pressed = RadioButton(label, *v == v_button);
-    if (pressed)
-        *v = v_button;
-    return pressed;
-}
-
-static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end)
-{
-    int line_count = 0;
-    const char* s = text_begin;
-    while (char c = *s++) // We are only matching for \n so we can ignore UTF-8 decoding
-        if (c == '\n')
-            line_count++;
-    s--;
-    if (s[0] != '\n' && s[0] != '\r')
-        line_count++;
-    *out_text_end = s;
-    return line_count;
-}
-
-static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining, ImVec2* out_offset, bool stop_on_new_line)
-{
-    ImFont* font = GImGui->Font;
-    const float line_height = GImGui->FontSize;
-    const float scale = line_height / font->FontSize;
-
-    ImVec2 text_size = ImVec2(0,0);
-    float line_width = 0.0f;
-
-    const ImWchar* s = text_begin;
-    while (s < text_end)
-    {
-        unsigned int c = (unsigned int)(*s++);
-        if (c == '\n')
-        {
-            text_size.x = ImMax(text_size.x, line_width);
-            text_size.y += line_height;
-            line_width = 0.0f;
-            if (stop_on_new_line)
-                break;
-            continue;
-        }
-        if (c == '\r')
-            continue;
-
-        const float char_width = font->GetCharAdvance((unsigned short)c) * scale;
-        line_width += char_width;
-    }
-
-    if (text_size.x < line_width)
-        text_size.x = line_width;
-
-    if (out_offset)
-        *out_offset = ImVec2(line_width, text_size.y + line_height);  // offset allow for the possibility of sitting after a trailing \n
-
-    if (line_width > 0 || text_size.y == 0.0f)                        // whereas size.y will ignore the trailing \n
-        text_size.y += line_height;
-
-    if (remaining)
-        *remaining = s;
-
-    return text_size;
-}
-
-// Wrapper for stb_textedit.h to edit text (our wrapper is for: statically sized buffer, single-line, wchar characters. InputText converts between UTF-8 and wchar)
-namespace ImGuiStb
-{
-
-static int     STB_TEXTEDIT_STRINGLEN(const STB_TEXTEDIT_STRING* obj)                             { return obj->CurLenW; }
-static ImWchar STB_TEXTEDIT_GETCHAR(const STB_TEXTEDIT_STRING* obj, int idx)                      { return obj->TextW[idx]; }
-static float   STB_TEXTEDIT_GETWIDTH(STB_TEXTEDIT_STRING* obj, int line_start_idx, int char_idx)  { ImWchar c = obj->TextW[line_start_idx+char_idx]; if (c == '\n') return STB_TEXTEDIT_GETWIDTH_NEWLINE; return GImGui->Font->GetCharAdvance(c) * (GImGui->FontSize / GImGui->Font->FontSize); }
-static int     STB_TEXTEDIT_KEYTOTEXT(int key)                                                    { return key >= 0x10000 ? 0 : key; }
-static ImWchar STB_TEXTEDIT_NEWLINE = '\n';
-static void    STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, STB_TEXTEDIT_STRING* obj, int line_start_idx)
-{
-    const ImWchar* text = obj->TextW.Data;
-    const ImWchar* text_remaining = NULL;
-    const ImVec2 size = InputTextCalcTextSizeW(text + line_start_idx, text + obj->CurLenW, &text_remaining, NULL, true);
-    r->x0 = 0.0f;
-    r->x1 = size.x;
-    r->baseline_y_delta = size.y;
-    r->ymin = 0.0f;
-    r->ymax = size.y;
-    r->num_chars = (int)(text_remaining - (text + line_start_idx));
-}
-
-static bool is_separator(unsigned int c)                                        { return ImCharIsBlankW(c) || c==',' || c==';' || c=='(' || c==')' || c=='{' || c=='}' || c=='[' || c==']' || c=='|'; }
-static int  is_word_boundary_from_right(STB_TEXTEDIT_STRING* obj, int idx)      { return idx > 0 ? (is_separator( obj->TextW[idx-1] ) && !is_separator( obj->TextW[idx] ) ) : 1; }
-static int  STB_TEXTEDIT_MOVEWORDLEFT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)   { idx--; while (idx >= 0 && !is_word_boundary_from_right(obj, idx)) idx--; return idx < 0 ? 0 : idx; }
-#ifdef __APPLE__    // FIXME: Move setting to IO structure
-static int  is_word_boundary_from_left(STB_TEXTEDIT_STRING* obj, int idx)       { return idx > 0 ? (!is_separator( obj->TextW[idx-1] ) && is_separator( obj->TextW[idx] ) ) : 1; }
-static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_left(obj, idx)) idx++; return idx > len ? len : idx; }
-#else
-static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_right(obj, idx)) idx++; return idx > len ? len : idx; }
-#endif
-#define STB_TEXTEDIT_MOVEWORDLEFT   STB_TEXTEDIT_MOVEWORDLEFT_IMPL    // They need to be #define for stb_textedit.h
-#define STB_TEXTEDIT_MOVEWORDRIGHT  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL
-
-static void STB_TEXTEDIT_DELETECHARS(STB_TEXTEDIT_STRING* obj, int pos, int n)
-{
-    ImWchar* dst = obj->TextW.Data + pos;
-
-    // We maintain our buffer length in both UTF-8 and wchar formats
-    obj->CurLenA -= ImTextCountUtf8BytesFromStr(dst, dst + n);
-    obj->CurLenW -= n;
-
-    // Offset remaining text
-    const ImWchar* src = obj->TextW.Data + pos + n;
-    while (ImWchar c = *src++)
-        *dst++ = c;
-    *dst = '\0';
-}
-
-static bool STB_TEXTEDIT_INSERTCHARS(STB_TEXTEDIT_STRING* obj, int pos, const ImWchar* new_text, int new_text_len)
-{
-    const bool is_resizable = (obj->UserFlags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int text_len = obj->CurLenW;
-    IM_ASSERT(pos <= text_len);
-
-    const int new_text_len_utf8 = ImTextCountUtf8BytesFromStr(new_text, new_text + new_text_len);
-    if (!is_resizable && (new_text_len_utf8 + obj->CurLenA + 1 > obj->BufCapacityA))
-        return false;
-
-    // Grow internal buffer if needed
-    if (new_text_len + text_len + 1 > obj->TextW.Size)
-    {
-        if (!is_resizable)
-            return false;
-        IM_ASSERT(text_len < obj->TextW.Size);
-        obj->TextW.resize(text_len + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1);
-    }
-
-    ImWchar* text = obj->TextW.Data;
-    if (pos != text_len)
-        memmove(text + pos + new_text_len, text + pos, (size_t)(text_len - pos) * sizeof(ImWchar));
-    memcpy(text + pos, new_text, (size_t)new_text_len * sizeof(ImWchar));
-
-    obj->CurLenW += new_text_len;
-    obj->CurLenA += new_text_len_utf8;
-    obj->TextW[obj->CurLenW] = '\0';
-
-    return true;
-}
-
-// We don't use an enum so we can build even with conflicting symbols (if another user of stb_textedit.h leak their STB_TEXTEDIT_K_* symbols)
-#define STB_TEXTEDIT_K_LEFT         0x10000 // keyboard input to move cursor left
-#define STB_TEXTEDIT_K_RIGHT        0x10001 // keyboard input to move cursor right
-#define STB_TEXTEDIT_K_UP           0x10002 // keyboard input to move cursor up
-#define STB_TEXTEDIT_K_DOWN         0x10003 // keyboard input to move cursor down
-#define STB_TEXTEDIT_K_LINESTART    0x10004 // keyboard input to move cursor to start of line
-#define STB_TEXTEDIT_K_LINEEND      0x10005 // keyboard input to move cursor to end of line
-#define STB_TEXTEDIT_K_TEXTSTART    0x10006 // keyboard input to move cursor to start of text
-#define STB_TEXTEDIT_K_TEXTEND      0x10007 // keyboard input to move cursor to end of text
-#define STB_TEXTEDIT_K_DELETE       0x10008 // keyboard input to delete selection or character under cursor
-#define STB_TEXTEDIT_K_BACKSPACE    0x10009 // keyboard input to delete selection or character left of cursor
-#define STB_TEXTEDIT_K_UNDO         0x1000A // keyboard input to perform undo
-#define STB_TEXTEDIT_K_REDO         0x1000B // keyboard input to perform redo
-#define STB_TEXTEDIT_K_WORDLEFT     0x1000C // keyboard input to move cursor left one word
-#define STB_TEXTEDIT_K_WORDRIGHT    0x1000D // keyboard input to move cursor right one word
-#define STB_TEXTEDIT_K_SHIFT        0x20000
-
-#define STB_TEXTEDIT_IMPLEMENTATION
-#include "stb_textedit.h"
-
-}
-
-void ImGuiInputTextState::OnKeyPressed(int key)
-{
-    stb_textedit_key(this, &StbState, key);
-    CursorFollow = true;
-    CursorAnimReset();
-}
-
-ImGuiInputTextCallbackData::ImGuiInputTextCallbackData()
-{
-    memset(this, 0, sizeof(*this));
-}
-
-// Public API to manipulate UTF-8 text
-// We expose UTF-8 to the user (unlike the STB_TEXTEDIT_* functions which are manipulating wchar)
-// FIXME: The existence of this rarely exercised code path is a bit of a nuisance.
-void ImGuiInputTextCallbackData::DeleteChars(int pos, int bytes_count)
-{
-    IM_ASSERT(pos + bytes_count <= BufTextLen);
-    char* dst = Buf + pos;
-    const char* src = Buf + pos + bytes_count;
-    while (char c = *src++)
-        *dst++ = c;
-    *dst = '\0';
-
-    if (CursorPos + bytes_count >= pos)
-        CursorPos -= bytes_count;
-    else if (CursorPos >= pos)
-        CursorPos = pos;
-    SelectionStart = SelectionEnd = CursorPos;
-    BufDirty = true;
-    BufTextLen -= bytes_count;
-}
-
-void ImGuiInputTextCallbackData::InsertChars(int pos, const char* new_text, const char* new_text_end)
-{
-    const bool is_resizable = (Flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int new_text_len = new_text_end ? (int)(new_text_end - new_text) : (int)strlen(new_text);
-    if (new_text_len + BufTextLen >= BufSize)
-    {
-        if (!is_resizable)
-            return;
-
-        // Contrary to STB_TEXTEDIT_INSERTCHARS() this is working in the UTF8 buffer, hence the midly similar code (until we remove the U16 buffer alltogether!)
-        ImGuiContext& g = *GImGui;
-        ImGuiInputTextState* edit_state = &g.InputTextState;
-        IM_ASSERT(edit_state->ID != 0 && g.ActiveId == edit_state->ID);
-        IM_ASSERT(Buf == edit_state->TempBuffer.Data);
-        int new_buf_size = BufTextLen + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1;
-        edit_state->TempBuffer.reserve(new_buf_size + 1);
-        Buf = edit_state->TempBuffer.Data;
-        BufSize = edit_state->BufCapacityA = new_buf_size;
-    }
-
-    if (BufTextLen != pos)
-        memmove(Buf + pos + new_text_len, Buf + pos, (size_t)(BufTextLen - pos));
-    memcpy(Buf + pos, new_text, (size_t)new_text_len * sizeof(char));
-    Buf[BufTextLen + new_text_len] = '\0';
-
-    if (CursorPos >= pos)
-        CursorPos += new_text_len;
-    SelectionStart = SelectionEnd = CursorPos;
-    BufDirty = true;
-    BufTextLen += new_text_len;
-}
-
-// Return false to discard a character.
-static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    unsigned int c = *p_char;
-
-    if (c < 128 && c != ' ' && !isprint((int)(c & 0xFF)))
-    {
-        bool pass = false;
-        pass |= (c == '\n' && (flags & ImGuiInputTextFlags_Multiline));
-        pass |= (c == '\t' && (flags & ImGuiInputTextFlags_AllowTabInput));
-        if (!pass)
-            return false;
-    }
-
-    if (c >= 0xE000 && c <= 0xF8FF) // Filter private Unicode range. I don't imagine anybody would want to input them. GLFW on OSX seems to send private characters for special keys like arrow keys.
-        return false;
-
-    if (flags & (ImGuiInputTextFlags_CharsDecimal | ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase | ImGuiInputTextFlags_CharsNoBlank | ImGuiInputTextFlags_CharsScientific))
-    {
-        if (flags & ImGuiInputTextFlags_CharsDecimal)
-            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsScientific)
-            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/') && (c != 'e') && (c != 'E'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsHexadecimal)
-            if (!(c >= '0' && c <= '9') && !(c >= 'a' && c <= 'f') && !(c >= 'A' && c <= 'F'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsUppercase)
-            if (c >= 'a' && c <= 'z')
-                *p_char = (c += (unsigned int)('A'-'a'));
-
-        if (flags & ImGuiInputTextFlags_CharsNoBlank)
-            if (ImCharIsBlankW(c))
-                return false;
-    }
-
-    if (flags & ImGuiInputTextFlags_CallbackCharFilter)
-    {
-        ImGuiInputTextCallbackData callback_data;
-        memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
-        callback_data.EventFlag = ImGuiInputTextFlags_CallbackCharFilter;
-        callback_data.EventChar = (ImWchar)c;
-        callback_data.Flags = flags;
-        callback_data.UserData = user_data;
-        if (callback(&callback_data) != 0)
-            return false;
-        *p_char = callback_data.EventChar;
-        if (!callback_data.EventChar)
-            return false;
-    }
-
-    return true;
-}
-
-// Edit a string of text
-// - buf_size account for the zero-terminator, so a buf_size of 6 can hold "Hello" but not "Hello!".
-//   This is so we can easily call InputText() on static arrays using ARRAYSIZE() and to match 
-//   Note that in std::string world, capacity() would omit 1 byte used by the zero-terminator.
-// - When active, hold on a privately held copy of the text (and apply back to 'buf'). So changing 'buf' while the InputText is active has no effect.
-// - If you want to use ImGui::InputText() with std::string, see misc/stl/imgui_stl.h
-// (FIXME: Rather messy function partly because we are doing UTF8 > u16 > UTF8 conversions on the go to more easily handle stb_textedit calls. Ideally we should stay in UTF-8 all the time. See https://github.com/nothings/stb/issues/188)
-bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2& size_arg, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* callback_user_data)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackHistory) && (flags & ImGuiInputTextFlags_Multiline)));        // Can't use both together (they both use up/down keys)
-    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackCompletion) && (flags & ImGuiInputTextFlags_AllowTabInput))); // Can't use both together (they both use tab key)
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiIO& io = g.IO;
-    const ImGuiStyle& style = g.Style;
-
-    const bool is_multiline = (flags & ImGuiInputTextFlags_Multiline) != 0;
-    const bool is_editable = (flags & ImGuiInputTextFlags_ReadOnly) == 0;
-    const bool is_password = (flags & ImGuiInputTextFlags_Password) != 0;
-    const bool is_undoable = (flags & ImGuiInputTextFlags_NoUndoRedo) == 0;
-    const bool is_resizable = (flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    if (is_resizable)
-        IM_ASSERT(callback != NULL); // Must provide a callback if you set the ImGuiInputTextFlags_CallbackResize flag!
-
-    if (is_multiline) // Open group before calling GetID() because groups tracks id created within their scope, 
-        BeginGroup();
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), (is_multiline ? GetTextLineHeight() * 8.0f : label_size.y) + style.FramePadding.y*2.0f); // Arbitrary default of 8 lines high for multi-line
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? (style.ItemInnerSpacing.x + label_size.x) : 0.0f, 0.0f));
-
-    ImGuiWindow* draw_window = window;
-    if (is_multiline)
-    {
-        ItemAdd(total_bb, id, &frame_bb);
-        if (!BeginChildFrame(id, frame_bb.GetSize()))
-        {
-            EndChildFrame();
-            EndGroup();
-            return false;
-        }
-        draw_window = GetCurrentWindow();
-        draw_window->DC.NavLayerActiveMaskNext |= draw_window->DC.NavLayerCurrentMask; // This is to ensure that EndChild() will display a navigation highlight
-        size.x -= draw_window->ScrollbarSizes.x;
-    }
-    else
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        if (!ItemAdd(total_bb, id, &frame_bb))
-            return false;
-    }
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if (hovered)
-        g.MouseCursor = ImGuiMouseCursor_TextInput;
-
-    // Password pushes a temporary font with only a fallback glyph
-    if (is_password)
-    {
-        const ImFontGlyph* glyph = g.Font->FindGlyph('*');
-        ImFont* password_font = &g.InputTextPasswordFont;
-        password_font->FontSize = g.Font->FontSize;
-        password_font->Scale = g.Font->Scale;
-        password_font->DisplayOffset = g.Font->DisplayOffset;
-        password_font->Ascent = g.Font->Ascent;
-        password_font->Descent = g.Font->Descent;
-        password_font->ContainerAtlas = g.Font->ContainerAtlas;
-        password_font->FallbackGlyph = glyph;
-        password_font->FallbackAdvanceX = glyph->AdvanceX;
-        IM_ASSERT(password_font->Glyphs.empty() && password_font->IndexAdvanceX.empty() && password_font->IndexLookup.empty());
-        PushFont(password_font);
-    }
-
-    // NB: we are only allowed to access 'edit_state' if we are the active widget.
-    ImGuiInputTextState& edit_state = g.InputTextState;
-
-    const bool focus_requested = FocusableItemRegister(window, id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0);    // Using completion callback disable keyboard tabbing
-    const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent);
-    const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code;
-
-    const bool user_clicked = hovered && io.MouseClicked[0];
-    const bool user_scrolled = is_multiline && g.ActiveId == 0 && edit_state.ID == id && g.ActiveIdPreviousFrame == draw_window->GetIDNoKeepAlive("#SCROLLY");
-    const bool user_nav_input_start = (g.ActiveId != id) && ((g.NavInputId == id) || (g.NavActivateId == id && g.NavInputSource == ImGuiInputSource_NavKeyboard));
-
-    bool clear_active_id = false;
-
-    bool select_all = (g.ActiveId != id) && ((flags & ImGuiInputTextFlags_AutoSelectAll) != 0 || user_nav_input_start) && (!is_multiline);
-    if (focus_requested || user_clicked || user_scrolled || user_nav_input_start)
-    {
-        if (g.ActiveId != id)
-        {
-            // Start edition
-            // Take a copy of the initial buffer value (both in original UTF-8 format and converted to wchar)
-            // From the moment we focused we are ignoring the content of 'buf' (unless we are in read-only mode)
-            const int prev_len_w = edit_state.CurLenW;
-            const int init_buf_len = (int)strlen(buf);
-            edit_state.TextW.resize(buf_size+1);             // wchar count <= UTF-8 count. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
-            edit_state.InitialText.resize(init_buf_len + 1); // UTF-8. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
-            memcpy(edit_state.InitialText.Data, buf, init_buf_len + 1);
-            const char* buf_end = NULL;
-            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, buf_size, buf, NULL, &buf_end);
-            edit_state.CurLenA = (int)(buf_end - buf); // We can't get the result from ImStrncpy() above because it is not UTF-8 aware. Here we'll cut off malformed UTF-8.
-            edit_state.CursorAnimReset();
-
-            // Preserve cursor position and undo/redo stack if we come back to same widget
-            // FIXME: We should probably compare the whole buffer to be on the safety side. Comparing buf (utf8) and edit_state.Text (wchar).
-            const bool recycle_state = (edit_state.ID == id) && (prev_len_w == edit_state.CurLenW);
-            if (recycle_state)
-            {
-                // Recycle existing cursor/selection/undo stack but clamp position
-                // Note a single mouse click will override the cursor/position immediately by calling stb_textedit_click handler.
-                edit_state.CursorClamp();
-            }
-            else
-            {
-                edit_state.ID = id;
-                edit_state.ScrollX = 0.0f;
-                stb_textedit_initialize_state(&edit_state.StbState, !is_multiline);
-                if (!is_multiline && focus_requested_by_code)
-                    select_all = true;
-            }
-            if (flags & ImGuiInputTextFlags_AlwaysInsertMode)
-                edit_state.StbState.insert_mode = true;
-            if (!is_multiline && (focus_requested_by_tab || (user_clicked && io.KeyCtrl)))
-                select_all = true;
-        }
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        if (!is_multiline && !(flags & ImGuiInputTextFlags_CallbackHistory))
-            g.ActiveIdAllowNavDirFlags |= ((1 << ImGuiDir_Up) | (1 << ImGuiDir_Down));
-    }
-    else if (io.MouseClicked[0])
-    {
-        // Release focus when we click outside
-        clear_active_id = true;
-    }
-
-    bool value_changed = false;
-    bool enter_pressed = false;
-    int backup_current_text_length = 0;
-
-    if (g.ActiveId == id)
-    {
-        if (!is_editable && !g.ActiveIdIsJustActivated)
-        {
-            // When read-only we always use the live data passed to the function
-            edit_state.TextW.resize(buf_size+1);
-            const char* buf_end = NULL;
-            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, buf, NULL, &buf_end);
-            edit_state.CurLenA = (int)(buf_end - buf);
-            edit_state.CursorClamp();
-        }
-
-        backup_current_text_length = edit_state.CurLenA;
-        edit_state.BufCapacityA = buf_size;
-        edit_state.UserFlags = flags;
-        edit_state.UserCallback = callback;
-        edit_state.UserCallbackData = callback_user_data;
-
-        // Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.
-        // Down the line we should have a cleaner library-wide concept of Selected vs Active.
-        g.ActiveIdAllowOverlap = !io.MouseDown[0];
-        g.WantTextInputNextFrame = 1;
-
-        // Edit in progress
-        const float mouse_x = (io.MousePos.x - frame_bb.Min.x - style.FramePadding.x) + edit_state.ScrollX;
-        const float mouse_y = (is_multiline ? (io.MousePos.y - draw_window->DC.CursorPos.y - style.FramePadding.y) : (g.FontSize*0.5f));
-
-        const bool is_osx = io.ConfigMacOSXBehaviors;
-        if (select_all || (hovered && !is_osx && io.MouseDoubleClicked[0]))
-        {
-            edit_state.SelectAll();
-            edit_state.SelectedAllMouseLock = true;
-        }
-        else if (hovered && is_osx && io.MouseDoubleClicked[0])
-        {
-            // Double-click select a word only, OS X style (by simulating keystrokes)
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT);
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDRIGHT | STB_TEXTEDIT_K_SHIFT);
-        }
-        else if (io.MouseClicked[0] && !edit_state.SelectedAllMouseLock)
-        {
-            if (hovered)
-            {
-                stb_textedit_click(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
-                edit_state.CursorAnimReset();
-            }
-        }
-        else if (io.MouseDown[0] && !edit_state.SelectedAllMouseLock && (io.MouseDelta.x != 0.0f || io.MouseDelta.y != 0.0f))
-        {
-            stb_textedit_drag(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
-            edit_state.CursorAnimReset();
-            edit_state.CursorFollow = true;
-        }
-        if (edit_state.SelectedAllMouseLock && !io.MouseDown[0])
-            edit_state.SelectedAllMouseLock = false;
-
-        if (io.InputCharacters[0])
-        {
-            // Process text input (before we check for Return because using some IME will effectively send a Return?)
-            // We ignore CTRL inputs, but need to allow ALT+CTRL as some keyboards (e.g. German) use AltGR (which _is_ Alt+Ctrl) to input certain characters.
-            bool ignore_inputs = (io.KeyCtrl && !io.KeyAlt) || (is_osx && io.KeySuper);
-            if (!ignore_inputs && is_editable && !user_nav_input_start)
-                for (int n = 0; n < IM_ARRAYSIZE(io.InputCharacters) && io.InputCharacters[n]; n++)
-                {
-                    // Insert character if they pass filtering
-                    unsigned int c = (unsigned int)io.InputCharacters[n];
-                    if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                        edit_state.OnKeyPressed((int)c);
-                }
-
-            // Consume characters
-            memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters));
-        }
-    }
-
-    bool cancel_edit = false;
-    if (g.ActiveId == id && !g.ActiveIdIsJustActivated && !clear_active_id)
-    {
-        // Handle key-presses
-        const int k_mask = (io.KeyShift ? STB_TEXTEDIT_K_SHIFT : 0);
-        const bool is_osx = io.ConfigMacOSXBehaviors;
-        const bool is_shortcut_key = (is_osx ? (io.KeySuper && !io.KeyCtrl) : (io.KeyCtrl && !io.KeySuper)) && !io.KeyAlt && !io.KeyShift; // OS X style: Shortcuts using Cmd/Super instead of Ctrl
-        const bool is_osx_shift_shortcut = is_osx && io.KeySuper && io.KeyShift && !io.KeyCtrl && !io.KeyAlt;
-        const bool is_wordmove_key_down = is_osx ? io.KeyAlt : io.KeyCtrl;                     // OS X style: Text editing cursor movement using Alt instead of Ctrl
-        const bool is_startend_key_down = is_osx && io.KeySuper && !io.KeyCtrl && !io.KeyAlt;  // OS X style: Line/Text Start and End using Cmd+Arrows instead of Home/End
-        const bool is_ctrl_key_only = io.KeyCtrl && !io.KeyShift && !io.KeyAlt && !io.KeySuper;
-        const bool is_shift_key_only = io.KeyShift && !io.KeyCtrl && !io.KeyAlt && !io.KeySuper;
-
-        const bool is_cut   = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_X)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Delete))) && is_editable && !is_password && (!is_multiline || edit_state.HasSelection());
-        const bool is_copy  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_C)) || (is_ctrl_key_only  && IsKeyPressedMap(ImGuiKey_Insert))) && !is_password && (!is_multiline || edit_state.HasSelection());
-        const bool is_paste = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_V)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Insert))) && is_editable;
-        const bool is_undo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Z)) && is_editable && is_undoable);
-        const bool is_redo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Y)) || (is_osx_shift_shortcut && IsKeyPressedMap(ImGuiKey_Z))) && is_editable && is_undoable;
-
-        if (IsKeyPressedMap(ImGuiKey_LeftArrow))                        { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINESTART : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDLEFT : STB_TEXTEDIT_K_LEFT) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_RightArrow))                  { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINEEND : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDRIGHT : STB_TEXTEDIT_K_RIGHT) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_UpArrow) && is_multiline)     { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMax(draw_window->Scroll.y - g.FontSize, 0.0f)); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTSTART : STB_TEXTEDIT_K_UP) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_DownArrow) && is_multiline)   { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMin(draw_window->Scroll.y + g.FontSize, GetScrollMaxY())); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTEND : STB_TEXTEDIT_K_DOWN) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Home))                        { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_End))                         { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Delete) && is_editable)       { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Backspace) && is_editable)
-        {
-            if (!edit_state.HasSelection())
-            {
-                if (is_wordmove_key_down) edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT|STB_TEXTEDIT_K_SHIFT);
-                else if (is_osx && io.KeySuper && !io.KeyAlt && !io.KeyCtrl) edit_state.OnKeyPressed(STB_TEXTEDIT_K_LINESTART|STB_TEXTEDIT_K_SHIFT);
-            }
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_BACKSPACE | k_mask);
-        }
-        else if (IsKeyPressedMap(ImGuiKey_Enter))
-        {
-            bool ctrl_enter_for_new_line = (flags & ImGuiInputTextFlags_CtrlEnterForNewLine) != 0;
-            if (!is_multiline || (ctrl_enter_for_new_line && !io.KeyCtrl) || (!ctrl_enter_for_new_line && io.KeyCtrl))
-            {
-                enter_pressed = clear_active_id = true;
-            }
-            else if (is_editable)
-            {
-                unsigned int c = '\n'; // Insert new line
-                if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                    edit_state.OnKeyPressed((int)c);
-            }
-        }
-        else if ((flags & ImGuiInputTextFlags_AllowTabInput) && IsKeyPressedMap(ImGuiKey_Tab) && !io.KeyCtrl && !io.KeyShift && !io.KeyAlt && is_editable)
-        {
-            unsigned int c = '\t'; // Insert TAB
-            if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                edit_state.OnKeyPressed((int)c);
-        }
-        else if (IsKeyPressedMap(ImGuiKey_Escape))
-        {
-            clear_active_id = cancel_edit = true;
-        }
-        else if (is_undo || is_redo)
-        {
-            edit_state.OnKeyPressed(is_undo ? STB_TEXTEDIT_K_UNDO : STB_TEXTEDIT_K_REDO);
-            edit_state.ClearSelection();
-        }
-        else if (is_shortcut_key && IsKeyPressedMap(ImGuiKey_A))
-        {
-            edit_state.SelectAll();
-            edit_state.CursorFollow = true;
-        }
-        else if (is_cut || is_copy)
-        {
-            // Cut, Copy
-            if (io.SetClipboardTextFn)
-            {
-                const int ib = edit_state.HasSelection() ? ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end) : 0;
-                const int ie = edit_state.HasSelection() ? ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end) : edit_state.CurLenW;
-                edit_state.TempBuffer.resize((ie-ib) * 4 + 1);
-                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data+ib, edit_state.TextW.Data+ie);
-                SetClipboardText(edit_state.TempBuffer.Data);
-            }
-            if (is_cut)
-            {
-                if (!edit_state.HasSelection())
-                    edit_state.SelectAll();
-                edit_state.CursorFollow = true;
-                stb_textedit_cut(&edit_state, &edit_state.StbState);
-            }
-        }
-        else if (is_paste)
-        {
-            if (const char* clipboard = GetClipboardText())
-            {
-                // Filter pasted buffer
-                const int clipboard_len = (int)strlen(clipboard);
-                ImWchar* clipboard_filtered = (ImWchar*)ImGui::MemAlloc((clipboard_len+1) * sizeof(ImWchar));
-                int clipboard_filtered_len = 0;
-                for (const char* s = clipboard; *s; )
-                {
-                    unsigned int c;
-                    s += ImTextCharFromUtf8(&c, s, NULL);
-                    if (c == 0)
-                        break;
-                    if (c >= 0x10000 || !InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                        continue;
-                    clipboard_filtered[clipboard_filtered_len++] = (ImWchar)c;
-                }
-                clipboard_filtered[clipboard_filtered_len] = 0;
-                if (clipboard_filtered_len > 0) // If everything was filtered, ignore the pasting operation
-                {
-                    stb_textedit_paste(&edit_state, &edit_state.StbState, clipboard_filtered, clipboard_filtered_len);
-                    edit_state.CursorFollow = true;
-                }
-                ImGui::MemFree(clipboard_filtered);
-            }
-        }
-    }
-
-    if (g.ActiveId == id)
-    {
-        const char* apply_new_text = NULL;
-        int apply_new_text_length = 0;
-        if (cancel_edit)
-        {
-            // Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
-            if (is_editable && strcmp(buf, edit_state.InitialText.Data) != 0)
-            {
-                apply_new_text = edit_state.InitialText.Data;
-                apply_new_text_length = edit_state.InitialText.Size - 1;
-            }
-        }
-
-        // When using 'ImGuiInputTextFlags_EnterReturnsTrue' as a special case we reapply the live buffer back to the input buffer before clearing ActiveId, even though strictly speaking it wasn't modified on this frame.
-        // If we didn't do that, code like InputInt() with ImGuiInputTextFlags_EnterReturnsTrue would fail. Also this allows the user to use InputText() with ImGuiInputTextFlags_EnterReturnsTrue without maintaining any user-side storage.
-        bool apply_edit_back_to_user_buffer = !cancel_edit || (enter_pressed && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
-        if (apply_edit_back_to_user_buffer)
-        {
-            // Apply new value immediately - copy modified buffer back
-            // Note that as soon as the input box is active, the in-widget value gets priority over any underlying modification of the input buffer
-            // FIXME: We actually always render 'buf' when calling DrawList->AddText, making the comment above incorrect.
-            // FIXME-OPT: CPU waste to do this every time the widget is active, should mark dirty state from the stb_textedit callbacks.
-            if (is_editable)
-            {
-                edit_state.TempBuffer.resize(edit_state.TextW.Size * 4 + 1);
-                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data, NULL);
-            }
-
-            // User callback
-            if ((flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_CallbackHistory | ImGuiInputTextFlags_CallbackAlways)) != 0)
-            {
-                IM_ASSERT(callback != NULL);
-
-                // The reason we specify the usage semantic (Completion/History) is that Completion needs to disable keyboard TABBING at the moment.
-                ImGuiInputTextFlags event_flag = 0;
-                ImGuiKey event_key = ImGuiKey_COUNT;
-                if ((flags & ImGuiInputTextFlags_CallbackCompletion) != 0 && IsKeyPressedMap(ImGuiKey_Tab))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackCompletion;
-                    event_key = ImGuiKey_Tab;
-                }
-                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_UpArrow))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackHistory;
-                    event_key = ImGuiKey_UpArrow;
-                }
-                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_DownArrow))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackHistory;
-                    event_key = ImGuiKey_DownArrow;
-                }
-                else if (flags & ImGuiInputTextFlags_CallbackAlways)
-                    event_flag = ImGuiInputTextFlags_CallbackAlways;
-
-                if (event_flag)
-                {
-                    ImGuiInputTextCallbackData callback_data;
-                    memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
-                    callback_data.EventFlag = event_flag;
-                    callback_data.Flags = flags;
-                    callback_data.UserData = callback_user_data;
-
-                    callback_data.EventKey = event_key;
-                    callback_data.Buf = edit_state.TempBuffer.Data;
-                    callback_data.BufTextLen = edit_state.CurLenA;
-                    callback_data.BufSize = edit_state.BufCapacityA;
-                    callback_data.BufDirty = false;
-
-                    // We have to convert from wchar-positions to UTF-8-positions, which can be pretty slow (an incentive to ditch the ImWchar buffer, see https://github.com/nothings/stb/issues/188)
-                    ImWchar* text = edit_state.TextW.Data;
-                    const int utf8_cursor_pos = callback_data.CursorPos = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.cursor);
-                    const int utf8_selection_start = callback_data.SelectionStart = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_start);
-                    const int utf8_selection_end = callback_data.SelectionEnd = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_end);
-
-                    // Call user code
-                    callback(&callback_data);
-
-                    // Read back what user may have modified
-                    IM_ASSERT(callback_data.Buf == edit_state.TempBuffer.Data);  // Invalid to modify those fields
-                    IM_ASSERT(callback_data.BufSize == edit_state.BufCapacityA);
-                    IM_ASSERT(callback_data.Flags == flags);
-                    if (callback_data.CursorPos != utf8_cursor_pos)            { edit_state.StbState.cursor = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.CursorPos); edit_state.CursorFollow = true; }
-                    if (callback_data.SelectionStart != utf8_selection_start)  { edit_state.StbState.select_start = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionStart); }
-                    if (callback_data.SelectionEnd != utf8_selection_end)      { edit_state.StbState.select_end = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionEnd); }
-                    if (callback_data.BufDirty)
-                    {
-                        IM_ASSERT(callback_data.BufTextLen == (int)strlen(callback_data.Buf)); // You need to maintain BufTextLen if you change the text!
-                        if (callback_data.BufTextLen > backup_current_text_length && is_resizable)
-                            edit_state.TextW.resize(edit_state.TextW.Size + (callback_data.BufTextLen - backup_current_text_length));
-                        edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, callback_data.Buf, NULL);
-                        edit_state.CurLenA = callback_data.BufTextLen;  // Assume correct length and valid UTF-8 from user, saves us an extra strlen()
-                        edit_state.CursorAnimReset();
-                    }
-                }
-            }
-
-            // Will copy result string if modified
-            if (is_editable && strcmp(edit_state.TempBuffer.Data, buf) != 0)
-            {
-                apply_new_text = edit_state.TempBuffer.Data;
-                apply_new_text_length = edit_state.CurLenA;
-            }
-        }
-
-        // Copy result to user buffer
-        if (apply_new_text)
-        {
-            IM_ASSERT(apply_new_text_length >= 0);
-            if (backup_current_text_length != apply_new_text_length && is_resizable)
-            {
-                ImGuiInputTextCallbackData callback_data;
-                callback_data.EventFlag = ImGuiInputTextFlags_CallbackResize;
-                callback_data.Flags = flags;
-                callback_data.Buf = buf;
-                callback_data.BufTextLen = apply_new_text_length;
-                callback_data.BufSize = ImMax(buf_size, apply_new_text_length + 1);
-                callback_data.UserData = callback_user_data;
-                callback(&callback_data);
-                buf = callback_data.Buf;
-                buf_size = callback_data.BufSize;
-                apply_new_text_length = ImMin(callback_data.BufTextLen, buf_size - 1);
-                IM_ASSERT(apply_new_text_length <= buf_size);
-            }
-
-            // If the underlying buffer resize was denied or not carried to the next frame, apply_new_text_length+1 may be >= buf_size.
-            ImStrncpy(buf, edit_state.TempBuffer.Data, ImMin(apply_new_text_length + 1, buf_size));
-            value_changed = true;
-        }
-
-        // Clear temporary user storage
-        edit_state.UserFlags = 0;
-        edit_state.UserCallback = NULL;
-        edit_state.UserCallbackData = NULL;
-    }
-
-    // Release active ID at the end of the function (so e.g. pressing Return still does a final application of the value)
-    if (clear_active_id && g.ActiveId == id)
-        ClearActiveID();
-
-    // Render
-    // Select which buffer we are going to display. When ImGuiInputTextFlags_NoLiveEdit is set 'buf' might still be the old value. We set buf to NULL to prevent accidental usage from now on.
-    const char* buf_display = (g.ActiveId == id && is_editable) ? edit_state.TempBuffer.Data : buf; buf = NULL;
-
-    // Set upper limit of single-line InputTextEx() at 2 million characters strings. The current pathological worst case is a long line
-    // without any carriage return, which would makes ImFont::RenderText() reserve too many vertices and probably crash. Avoid it altogether.
-    // Note that we only use this limit on single-line InputText(), so a pathologically large line on a InputTextMultiline() would still crash.
-    const int buf_display_max_length = 2 * 1024 * 1024;
-
-    if (!is_multiline)
-    {
-        RenderNavHighlight(frame_bb, id);
-        RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-    }
-
-    const ImVec4 clip_rect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + size.x, frame_bb.Min.y + size.y); // Not using frame_bb.Max because we have adjusted size
-    ImVec2 render_pos = is_multiline ? draw_window->DC.CursorPos : frame_bb.Min + style.FramePadding;
-    ImVec2 text_size(0.f, 0.f);
-    const bool is_currently_scrolling = (edit_state.ID == id && is_multiline && g.ActiveId == draw_window->GetIDNoKeepAlive("#SCROLLY"));
-    if (g.ActiveId == id || is_currently_scrolling)
-    {
-        edit_state.CursorAnim += io.DeltaTime;
-
-        // This is going to be messy. We need to:
-        // - Display the text (this alone can be more easily clipped)
-        // - Handle scrolling, highlight selection, display cursor (those all requires some form of 1d->2d cursor position calculation)
-        // - Measure text height (for scrollbar)
-        // We are attempting to do most of that in **one main pass** to minimize the computation cost (non-negligible for large amount of text) + 2nd pass for selection rendering (we could merge them by an extra refactoring effort)
-        // FIXME: This should occur on buf_display but we'd need to maintain cursor/select_start/select_end for UTF-8.
-        const ImWchar* text_begin = edit_state.TextW.Data;
-        ImVec2 cursor_offset, select_start_offset;
-
-        {
-            // Count lines + find lines numbers straddling 'cursor' and 'select_start' position.
-            const ImWchar* searches_input_ptr[2];
-            searches_input_ptr[0] = text_begin + edit_state.StbState.cursor;
-            searches_input_ptr[1] = NULL;
-            int searches_remaining = 1;
-            int searches_result_line_number[2] = { -1, -999 };
-            if (edit_state.StbState.select_start != edit_state.StbState.select_end)
-            {
-                searches_input_ptr[1] = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
-                searches_result_line_number[1] = -1;
-                searches_remaining++;
-            }
-
-            // Iterate all lines to find our line numbers
-            // In multi-line mode, we never exit the loop until all lines are counted, so add one extra to the searches_remaining counter.
-            searches_remaining += is_multiline ? 1 : 0;
-            int line_count = 0;
-            for (const ImWchar* s = text_begin; *s != 0; s++)
-                if (*s == '\n')
-                {
-                    line_count++;
-                    if (searches_result_line_number[0] == -1 && s >= searches_input_ptr[0]) { searches_result_line_number[0] = line_count; if (--searches_remaining <= 0) break; }
-                    if (searches_result_line_number[1] == -1 && s >= searches_input_ptr[1]) { searches_result_line_number[1] = line_count; if (--searches_remaining <= 0) break; }
-                }
-            line_count++;
-            if (searches_result_line_number[0] == -1) searches_result_line_number[0] = line_count;
-            if (searches_result_line_number[1] == -1) searches_result_line_number[1] = line_count;
-
-            // Calculate 2d position by finding the beginning of the line and measuring distance
-            cursor_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[0], text_begin), searches_input_ptr[0]).x;
-            cursor_offset.y = searches_result_line_number[0] * g.FontSize;
-            if (searches_result_line_number[1] >= 0)
-            {
-                select_start_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[1], text_begin), searches_input_ptr[1]).x;
-                select_start_offset.y = searches_result_line_number[1] * g.FontSize;
-            }
-
-            // Store text height (note that we haven't calculated text width at all, see GitHub issues #383, #1224)
-            if (is_multiline)
-                text_size = ImVec2(size.x, line_count * g.FontSize);
-        }
-
-        // Scroll
-        if (edit_state.CursorFollow)
-        {
-            // Horizontal scroll in chunks of quarter width
-            if (!(flags & ImGuiInputTextFlags_NoHorizontalScroll))
-            {
-                const float scroll_increment_x = size.x * 0.25f;
-                if (cursor_offset.x < edit_state.ScrollX)
-                    edit_state.ScrollX = (float)(int)ImMax(0.0f, cursor_offset.x - scroll_increment_x);
-                else if (cursor_offset.x - size.x >= edit_state.ScrollX)
-                    edit_state.ScrollX = (float)(int)(cursor_offset.x - size.x + scroll_increment_x);
-            }
-            else
-            {
-                edit_state.ScrollX = 0.0f;
-            }
-
-            // Vertical scroll
-            if (is_multiline)
-            {
-                float scroll_y = draw_window->Scroll.y;
-                if (cursor_offset.y - g.FontSize < scroll_y)
-                    scroll_y = ImMax(0.0f, cursor_offset.y - g.FontSize);
-                else if (cursor_offset.y - size.y >= scroll_y)
-                    scroll_y = cursor_offset.y - size.y;
-                draw_window->DC.CursorPos.y += (draw_window->Scroll.y - scroll_y);   // To avoid a frame of lag
-                draw_window->Scroll.y = scroll_y;
-                render_pos.y = draw_window->DC.CursorPos.y;
-            }
-        }
-        edit_state.CursorFollow = false;
-        const ImVec2 render_scroll = ImVec2(edit_state.ScrollX, 0.0f);
-
-        // Draw selection
-        if (edit_state.StbState.select_start != edit_state.StbState.select_end)
-        {
-            const ImWchar* text_selected_begin = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
-            const ImWchar* text_selected_end = text_begin + ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end);
-
-            float bg_offy_up = is_multiline ? 0.0f : -1.0f;    // FIXME: those offsets should be part of the style? they don't play so well with multi-line selection.
-            float bg_offy_dn = is_multiline ? 0.0f : 2.0f;
-            ImU32 bg_color = GetColorU32(ImGuiCol_TextSelectedBg);
-            ImVec2 rect_pos = render_pos + select_start_offset - render_scroll;
-            for (const ImWchar* p = text_selected_begin; p < text_selected_end; )
-            {
-                if (rect_pos.y > clip_rect.w + g.FontSize)
-                    break;
-                if (rect_pos.y < clip_rect.y)
-                {
-                    while (p < text_selected_end)
-                        if (*p++ == '\n')
-                            break;
-                }
-                else
-                {
-                    ImVec2 rect_size = InputTextCalcTextSizeW(p, text_selected_end, &p, NULL, true);
-                    if (rect_size.x <= 0.0f) rect_size.x = (float)(int)(g.Font->GetCharAdvance((unsigned short)' ') * 0.50f); // So we can see selected empty lines
-                    ImRect rect(rect_pos + ImVec2(0.0f, bg_offy_up - g.FontSize), rect_pos +ImVec2(rect_size.x, bg_offy_dn));
-                    rect.ClipWith(clip_rect);
-                    if (rect.Overlaps(clip_rect))
-                        draw_window->DrawList->AddRectFilled(rect.Min, rect.Max, bg_color);
-                }
-                rect_pos.x = render_pos.x - render_scroll.x;
-                rect_pos.y += g.FontSize;
-            }
-        }
-
-        const int buf_display_len = edit_state.CurLenA;
-        if (is_multiline || buf_display_len < buf_display_max_length)
-            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos - render_scroll, GetColorU32(ImGuiCol_Text), buf_display, buf_display + buf_display_len, 0.0f, is_multiline ? NULL : &clip_rect);
-
-        // Draw blinking cursor
-        bool cursor_is_visible = (!g.IO.ConfigCursorBlink) || (g.InputTextState.CursorAnim <= 0.0f) || ImFmod(g.InputTextState.CursorAnim, 1.20f) <= 0.80f;
-        ImVec2 cursor_screen_pos = render_pos + cursor_offset - render_scroll;
-        ImRect cursor_screen_rect(cursor_screen_pos.x, cursor_screen_pos.y-g.FontSize+0.5f, cursor_screen_pos.x+1.0f, cursor_screen_pos.y-1.5f);
-        if (cursor_is_visible && cursor_screen_rect.Overlaps(clip_rect))
-            draw_window->DrawList->AddLine(cursor_screen_rect.Min, cursor_screen_rect.GetBL(), GetColorU32(ImGuiCol_Text));
-
-        // Notify OS of text input position for advanced IME (-1 x offset so that Windows IME can cover our cursor. Bit of an extra nicety.)
-        if (is_editable)
-            g.PlatformImePos = ImVec2(cursor_screen_pos.x - 1, cursor_screen_pos.y - g.FontSize);
-    }
-    else
-    {
-        // Render text only
-        const char* buf_end = NULL;
-        if (is_multiline)
-            text_size = ImVec2(size.x, InputTextCalcTextLenAndLineCount(buf_display, &buf_end) * g.FontSize); // We don't need width
-        else
-            buf_end = buf_display + strlen(buf_display);
-        if (is_multiline || (buf_end - buf_display) < buf_display_max_length)
-            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos, GetColorU32(ImGuiCol_Text), buf_display, buf_end, 0.0f, is_multiline ? NULL : &clip_rect);
-    }
-
-    if (is_multiline)
-    {
-        Dummy(text_size + ImVec2(0.0f, g.FontSize)); // Always add room to scroll an extra line
-        EndChildFrame();
-        EndGroup();
-    }
-
-    if (is_password)
-        PopFont();
-
-    // Log as text
-    if (g.LogEnabled && !is_password)
-        LogRenderedText(&render_pos, buf_display, NULL);
-
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    if (value_changed)
-        MarkItemEdited(id);
-
-    if ((flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0)
-        return enter_pressed;
-    else
-        return value_changed;
-}
-
-bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    IM_ASSERT(!(flags & ImGuiInputTextFlags_Multiline)); // call InputTextMultiline()
-    return InputTextEx(label, buf, (int)buf_size, ImVec2(0,0), flags, callback, user_data);
-}
-
-bool ImGui::InputTextMultiline(const char* label, char* buf, size_t buf_size, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    return InputTextEx(label, buf, (int)buf_size, size, flags | ImGuiInputTextFlags_Multiline, callback, user_data);
-}
-
-// NB: format here must be a simple "%xx" format string with no prefix/suffix (unlike the Drag/Slider functions "format" argument)
-bool ImGui::InputScalar(const char* label, ImGuiDataType data_type, void* data_ptr, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-
-    char buf[64];
-    DataTypeFormatString(buf, IM_ARRAYSIZE(buf), data_type, data_ptr, format);
-
-    bool value_changed = false;
-    if ((extra_flags & (ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsScientific)) == 0)
-        extra_flags |= ImGuiInputTextFlags_CharsDecimal;
-    extra_flags |= ImGuiInputTextFlags_AutoSelectAll;
-
-    if (step != NULL)
-    {
-        const float button_size = GetFrameHeight();
-
-        BeginGroup(); // The only purpose of the group here is to allow the caller to query item data e.g. IsItemActive()
-        PushID(label);
-        PushItemWidth(ImMax(1.0f, CalcItemWidth() - (button_size + style.ItemInnerSpacing.x) * 2));
-        if (InputText("", buf, IM_ARRAYSIZE(buf), extra_flags)) // PushId(label) + "" gives us the expected ID from outside point of view
-            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
-        PopItemWidth();
-
-        // Step buttons
-        SameLine(0, style.ItemInnerSpacing.x);
-        if (ButtonEx("-", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
-        {
-            DataTypeApplyOp(data_type, '-', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
-            value_changed = true;
-        }
-        SameLine(0, style.ItemInnerSpacing.x);
-        if (ButtonEx("+", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
-        {
-            DataTypeApplyOp(data_type, '+', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
-            value_changed = true;
-        }
-        SameLine(0, style.ItemInnerSpacing.x);
-        TextUnformatted(label, FindRenderedTextEnd(label));
-
-        PopID();
-        EndGroup();
-    }
-    else
-    {
-        if (InputText(label, buf, IM_ARRAYSIZE(buf), extra_flags))
-            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
-    }
-
-    return value_changed;
-}
-
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    extra_flags |= ImGuiInputTextFlags_CharsScientific;
-    return InputScalar(label, ImGuiDataType_Float, (void*)v, (void*)(step>0.0f ? &step : NULL), (void*)(step_fast>0.0f ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputDouble(const char* label, double* v, double step, double step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    extra_flags |= ImGuiInputTextFlags_CharsScientific;
-    return InputScalar(label, ImGuiDataType_Double, (void*)v, (void*)(step>0.0 ? &step : NULL), (void*)(step_fast>0.0 ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputInt(const char* label, int* v, int step, int step_fast, ImGuiInputTextFlags extra_flags)
-{
-    // Hexadecimal input provided as a convenience but the flag name is awkward. Typically you'd use InputText() to parse your own data, if you want to handle prefixes.
-    const char* format = (extra_flags & ImGuiInputTextFlags_CharsHexadecimal) ? "%08X" : "%d";
-    return InputScalar(label, ImGuiDataType_S32, (void*)v, (void*)(step>0 ? &step : NULL), (void*)(step_fast>0 ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= InputScalar("##v", data_type, v, step, step_fast, format, extra_flags);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
-}
-
-// Prefer using "const char* format" directly, which is more flexible and consistent with other API.
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputFloat(label, v, step, step_fast, format, extra_flags);
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
-}
-#endif // IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-
-bool ImGui::InputInt2(const char* label, int v[2], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 2, NULL, NULL, "%d", extra_flags);
-}
-
-bool ImGui::InputInt3(const char* label, int v[3], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 3, NULL, NULL, "%d", extra_flags);
-}
-
-bool ImGui::InputInt4(const char* label, int v[4], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 4, NULL, NULL, "%d", extra_flags);
-}
-
-static float CalcMaxPopupHeightFromItemCount(int items_count)
-{
-    ImGuiContext& g = *GImGui;
-    if (items_count <= 0)
-        return FLT_MAX;
-    return (g.FontSize + g.Style.ItemSpacing.y) * items_count - g.Style.ItemSpacing.y + (g.Style.WindowPadding.y * 2);
-}
-
-bool ImGui::BeginCombo(const char* label, const char* preview_value, ImGuiComboFlags flags)
-{
-    // Always consume the SetNextWindowSizeConstraint() call in our early return paths
-    ImGuiContext& g = *GImGui;
-    ImGuiCond backup_next_window_size_constraint = g.NextWindowData.SizeConstraintCond;
-    g.NextWindowData.SizeConstraintCond = 0;
-
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    IM_ASSERT((flags & (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)) != (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)); // Can't use both flags together
-
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    const float arrow_size = (flags & ImGuiComboFlags_NoArrowButton) ? 0.0f : GetFrameHeight();
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const float w = (flags & ImGuiComboFlags_NoPreview) ? arrow_size : CalcItemWidth();
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, id, &frame_bb))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(frame_bb, id, &hovered, &held);
-    bool popup_open = IsPopupOpen(id);
-
-    const ImRect value_bb(frame_bb.Min, frame_bb.Max - ImVec2(arrow_size, 0.0f));
-    const ImU32 frame_col = GetColorU32(hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    if (!(flags & ImGuiComboFlags_NoPreview))
-        window->DrawList->AddRectFilled(frame_bb.Min, ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Max.y), frame_col, style.FrameRounding, ImDrawCornerFlags_Left);
-    if (!(flags & ImGuiComboFlags_NoArrowButton))
-    {
-        window->DrawList->AddRectFilled(ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Min.y), frame_bb.Max, GetColorU32((popup_open || hovered) ? ImGuiCol_ButtonHovered : ImGuiCol_Button), style.FrameRounding, (w <= arrow_size) ? ImDrawCornerFlags_All : ImDrawCornerFlags_Right);
-        RenderArrow(ImVec2(frame_bb.Max.x - arrow_size + style.FramePadding.y, frame_bb.Min.y + style.FramePadding.y), ImGuiDir_Down);
-    }
-    RenderFrameBorder(frame_bb.Min, frame_bb.Max, style.FrameRounding);
-    if (preview_value != NULL && !(flags & ImGuiComboFlags_NoPreview))
-        RenderTextClipped(frame_bb.Min + style.FramePadding, value_bb.Max, preview_value, NULL, NULL, ImVec2(0.0f,0.0f));
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    if ((pressed || g.NavActivateId == id) && !popup_open)
-    {
-        if (window->DC.NavLayerCurrent == 0)
-            window->NavLastIds[0] = id;
-        OpenPopupEx(id);
-        popup_open = true;
-    }
-
-    if (!popup_open)
-        return false;
-
-    if (backup_next_window_size_constraint)
-    {
-        g.NextWindowData.SizeConstraintCond = backup_next_window_size_constraint;
-        g.NextWindowData.SizeConstraintRect.Min.x = ImMax(g.NextWindowData.SizeConstraintRect.Min.x, w);
-    }
-    else
-    {
-        if ((flags & ImGuiComboFlags_HeightMask_) == 0)
-            flags |= ImGuiComboFlags_HeightRegular;
-        IM_ASSERT(ImIsPowerOfTwo(flags & ImGuiComboFlags_HeightMask_));    // Only one
-        int popup_max_height_in_items = -1;
-        if (flags & ImGuiComboFlags_HeightRegular)     popup_max_height_in_items = 8;
-        else if (flags & ImGuiComboFlags_HeightSmall)  popup_max_height_in_items = 4;
-        else if (flags & ImGuiComboFlags_HeightLarge)  popup_max_height_in_items = 20;
-        SetNextWindowSizeConstraints(ImVec2(w, 0.0f), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
-    }
-
-    char name[16];
-    ImFormatString(name, IM_ARRAYSIZE(name), "##Combo_%02d", g.CurrentPopupStack.Size); // Recycle windows based on depth
-
-    // Peak into expected window size so we can position it
-    if (ImGuiWindow* popup_window = FindWindowByName(name))
-        if (popup_window->WasActive)
-        {
-            ImVec2 size_expected = CalcWindowExpectedSize(popup_window);
-            if (flags & ImGuiComboFlags_PopupAlignLeft)
-                popup_window->AutoPosLastDirection = ImGuiDir_Left;
-            ImRect r_outer = GetWindowAllowedExtentRect(popup_window);
-            ImVec2 pos = FindBestWindowPosForPopupEx(frame_bb.GetBL(), size_expected, &popup_window->AutoPosLastDirection, r_outer, frame_bb, ImGuiPopupPositionPolicy_ComboBox);
-            SetNextWindowPos(pos);
-        }
-
-    // Horizontally align ourselves with the framed text
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_Popup | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoSavedSettings;
-    PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(style.FramePadding.x, style.WindowPadding.y));
-    bool ret = Begin(name, NULL, window_flags);
-    PopStyleVar();
-    if (!ret)
-    {
-        EndPopup();
-        IM_ASSERT(0);   // This should never happen as we tested for IsPopupOpen() above
-        return false;
-    }
-    return true;
-}
-
-void ImGui::EndCombo()
-{
-    EndPopup();
-}
-
-// Getter for the old Combo() API: const char*[]
-static bool Items_ArrayGetter(void* data, int idx, const char** out_text)
-{
-    const char* const* items = (const char* const*)data;
-    if (out_text)
-        *out_text = items[idx];
-    return true;
-}
-
-// Getter for the old Combo() API: "item1\0item2\0item3\0"
-static bool Items_SingleStringGetter(void* data, int idx, const char** out_text)
-{
-    // FIXME-OPT: we could pre-compute the indices to fasten this. But only 1 active combo means the waste is limited.
-    const char* items_separated_by_zeros = (const char*)data;
-    int items_count = 0;
-    const char* p = items_separated_by_zeros;
-    while (*p)
-    {
-        if (idx == items_count)
-            break;
-        p += strlen(p) + 1;
-        items_count++;
-    }
-    if (!*p)
-        return false;
-    if (out_text)
-        *out_text = p;
-    return true;
-}
-
-// Old API, prefer using BeginCombo() nowadays if you can.
-bool ImGui::Combo(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int popup_max_height_in_items)
-{
-    ImGuiContext& g = *GImGui;
-
-    // Call the getter to obtain the preview string which is a parameter to BeginCombo()
-    const char* preview_value = NULL;
-    if (*current_item >= 0 && *current_item < items_count)
-        items_getter(data, *current_item, &preview_value);
-
-    // The old Combo() API exposed "popup_max_height_in_items". The new more general BeginCombo() API doesn't have/need it, but we emulate it here.
-    if (popup_max_height_in_items != -1 && !g.NextWindowData.SizeConstraintCond)
-        SetNextWindowSizeConstraints(ImVec2(0,0), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
-
-    if (!BeginCombo(label, preview_value, ImGuiComboFlags_None))
-        return false;
-
-    // Display items
-    // FIXME-OPT: Use clipper (but we need to disable it on the appearing frame to make sure our call to SetItemDefaultFocus() is processed)
-    bool value_changed = false;
-    for (int i = 0; i < items_count; i++)
-    {
-        PushID((void*)(intptr_t)i);
-        const bool item_selected = (i == *current_item);
-        const char* item_text;
-        if (!items_getter(data, i, &item_text))
-            item_text = "*Unknown item*";
-        if (Selectable(item_text, item_selected))
-        {
-            value_changed = true;
-            *current_item = i;
-        }
-        if (item_selected)
-            SetItemDefaultFocus();
-        PopID();
-    }
-
-    EndCombo();
-    return value_changed;
-}
-
-// Combo box helper allowing to pass an array of strings.
-bool ImGui::Combo(const char* label, int* current_item, const char* const items[], int items_count, int height_in_items)
-{
-    const bool value_changed = Combo(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_in_items);
-    return value_changed;
-}
-
-// Combo box helper allowing to pass all items in a single string literal holding multiple zero-terminated items "item1\0item2\0" 
-bool ImGui::Combo(const char* label, int* current_item, const char* items_separated_by_zeros, int height_in_items)
-{
-    int items_count = 0;
-    const char* p = items_separated_by_zeros;       // FIXME-OPT: Avoid computing this, or at least only when combo is open
-    while (*p)
-    {
-        p += strlen(p) + 1;
-        items_count++;
-    }
-    bool value_changed = Combo(label, current_item, Items_SingleStringGetter, (void*)items_separated_by_zeros, items_count, height_in_items);
-    return value_changed;
-}
-
-// Tip: pass an empty label (e.g. "##dummy") then you can use the space to draw other text or image.
-// But you need to make sure the ID is unique, e.g. enclose calls in PushID/PopID or use ##unique_id.
-bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet) // FIXME-OPT: Avoid if vertically clipped.
-        PopClipRect();
-
-    ImGuiID id = window->GetID(label);
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-    ImVec2 size(size_arg.x != 0.0f ? size_arg.x : label_size.x, size_arg.y != 0.0f ? size_arg.y : label_size.y);
-    ImVec2 pos = window->DC.CursorPos;
-    pos.y += window->DC.CurrentLineTextBaseOffset;
-    ImRect bb_inner(pos, pos + size);
-    ItemSize(bb_inner);
-
-    // Fill horizontal space.
-    ImVec2 window_padding = window->WindowPadding;
-    float max_x = (flags & ImGuiSelectableFlags_SpanAllColumns) ? GetWindowContentRegionMax().x : GetContentRegionMax().x;
-    float w_draw = ImMax(label_size.x, window->Pos.x + max_x - window_padding.x - window->DC.CursorPos.x);
-    ImVec2 size_draw((size_arg.x != 0 && !(flags & ImGuiSelectableFlags_DrawFillAvailWidth)) ? size_arg.x : w_draw, size_arg.y != 0.0f ? size_arg.y : size.y);
-    ImRect bb(pos, pos + size_draw);
-    if (size_arg.x == 0.0f || (flags & ImGuiSelectableFlags_DrawFillAvailWidth))
-        bb.Max.x += window_padding.x;
-
-    // Selectables are tightly packed together, we extend the box to cover spacing between selectable.
-    float spacing_L = (float)(int)(style.ItemSpacing.x * 0.5f);
-    float spacing_U = (float)(int)(style.ItemSpacing.y * 0.5f);
-    float spacing_R = style.ItemSpacing.x - spacing_L;
-    float spacing_D = style.ItemSpacing.y - spacing_U;
-    bb.Min.x -= spacing_L;
-    bb.Min.y -= spacing_U;
-    bb.Max.x += spacing_R;
-    bb.Max.y += spacing_D;
-    if (!ItemAdd(bb, (flags & ImGuiSelectableFlags_Disabled) ? 0 : id))
-    {
-        if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
-            PushColumnClipRect();
-        return false;
-    }
-
-    // We use NoHoldingActiveID on menus so user can click and _hold_ on a menu then drag to browse child entries
-    ImGuiButtonFlags button_flags = 0;
-    if (flags & ImGuiSelectableFlags_NoHoldingActiveID) button_flags |= ImGuiButtonFlags_NoHoldingActiveID;
-    if (flags & ImGuiSelectableFlags_PressedOnClick) button_flags |= ImGuiButtonFlags_PressedOnClick;
-    if (flags & ImGuiSelectableFlags_PressedOnRelease) button_flags |= ImGuiButtonFlags_PressedOnRelease;
-    if (flags & ImGuiSelectableFlags_Disabled) button_flags |= ImGuiButtonFlags_Disabled;
-    if (flags & ImGuiSelectableFlags_AllowDoubleClick) button_flags |= ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnDoubleClick;
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, button_flags);
-    if (flags & ImGuiSelectableFlags_Disabled)
-        selected = false;
-
-    // Hovering selectable with mouse updates NavId accordingly so navigation can be resumed with gamepad/keyboard (this doesn't happen on most widgets)
-    if (pressed || hovered)
-        if (!g.NavDisableMouseHover && g.NavWindow == window && g.NavLayer == window->DC.NavLayerCurrent)
-        {
-            g.NavDisableHighlight = true;
-            SetNavID(id, window->DC.NavLayerCurrent);
-        }
-    if (pressed)
-        MarkItemEdited(id);
-
-    // Render
-    if (hovered || selected)
-    {
-        const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
-        RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
-        RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_TypeThin | ImGuiNavHighlightFlags_NoRounding);
-    }
-
-    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
-    {
-        PushColumnClipRect();
-        bb.Max.x -= (GetContentRegionMax().x - max_x);
-    }
-
-    if (flags & ImGuiSelectableFlags_Disabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-    RenderTextClipped(bb_inner.Min, bb.Max, label, NULL, &label_size, ImVec2(0.0f,0.0f));
-    if (flags & ImGuiSelectableFlags_Disabled) PopStyleColor();
-
-    // Automatically close popups
-    if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_DontClosePopups) && !(window->DC.ItemFlags & ImGuiItemFlags_SelectableDontClosePopup))
-        CloseCurrentPopup();
-    return pressed;
-}
-
-bool ImGui::Selectable(const char* label, bool* p_selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
-{
-    if (Selectable(label, *p_selected, flags, size_arg))
-    {
-        *p_selected = !*p_selected;
-        return true;
-    }
-    return false;
-}
-
-// FIXME: Rename to BeginListBox()
-// Helper to calculate the size of a listbox and display a label on the right.
-// Tip: To have a list filling the entire window width, PushItemWidth(-1) and pass an empty label "##empty"
-bool ImGui::ListBoxHeader(const char* label, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    const ImGuiStyle& style = GetStyle();
-    const ImGuiID id = GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
-    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), GetTextLineHeightWithSpacing() * 7.4f + style.ItemSpacing.y);
-    ImVec2 frame_size = ImVec2(size.x, ImMax(size.y, label_size.y));
-    ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + frame_size);
-    ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-    window->DC.LastItemRect = bb; // Forward storage for ListBoxFooter.. dodgy.
-
-    BeginGroup();
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    BeginChildFrame(id, frame_bb.GetSize());
-    return true;
-}
-
-// FIXME: Rename to BeginListBox()
-bool ImGui::ListBoxHeader(const char* label, int items_count, int height_in_items)
-{
-    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
-    // We don't add +0.40f if items_count <= height_in_items. It is slightly dodgy, because it means a dynamic list of items will make the widget resize occasionally when it crosses that size.
-    // I am expecting that someone will come and complain about this behavior in a remote future, then we can advise on a better solution.
-    if (height_in_items < 0)
-        height_in_items = ImMin(items_count, 7);
-    float height_in_items_f = height_in_items < items_count ? (height_in_items + 0.40f) : (height_in_items + 0.00f);
-
-    // We include ItemSpacing.y so that a list sized for the exact number of items doesn't make a scrollbar appears. We could also enforce that by passing a flag to BeginChild().
-    ImVec2 size;
-    size.x = 0.0f;
-    size.y = GetTextLineHeightWithSpacing() * height_in_items_f + GetStyle().ItemSpacing.y;
-    return ListBoxHeader(label, size);
-}
-
-// FIXME: Rename to EndListBox()
-void ImGui::ListBoxFooter()
-{
-    ImGuiWindow* parent_window = GetCurrentWindow()->ParentWindow;
-    const ImRect bb = parent_window->DC.LastItemRect;
-    const ImGuiStyle& style = GetStyle();
-
-    EndChildFrame();
-
-    // Redeclare item size so that it includes the label (we have stored the full size in LastItemRect)
-    // We call SameLine() to restore DC.CurrentLine* data
-    SameLine();
-    parent_window->DC.CursorPos = bb.Min;
-    ItemSize(bb, style.FramePadding.y);
-    EndGroup();
-}
-
-bool ImGui::ListBox(const char* label, int* current_item, const char* const items[], int items_count, int height_items)
-{
-    const bool value_changed = ListBox(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_items);
-    return value_changed;
-}
-
-bool ImGui::ListBox(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int height_in_items)
-{
-    if (!ListBoxHeader(label, items_count, height_in_items))
-        return false;
-
-    // Assume all items have even height (= 1 line of text). If you need items of different or variable sizes you can create a custom version of ListBox() in your code without using the clipper.
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    ImGuiListClipper clipper(items_count, GetTextLineHeightWithSpacing()); // We know exactly our line height here so we pass it as a minor optimization, but generally you don't need to.
-    while (clipper.Step())
-        for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++)
-        {
-            const bool item_selected = (i == *current_item);
-            const char* item_text;
-            if (!items_getter(data, i, &item_text))
-                item_text = "*Unknown item*";
-
-            PushID(i);
-            if (Selectable(item_text, item_selected))
-            {
-                *current_item = i;
-                value_changed = true;
-            }
-            if (item_selected)
-                SetItemDefaultFocus();
-            PopID();
-        }
-    ListBoxFooter();
-    if (value_changed)
-        MarkItemEdited(g.CurrentWindow->DC.LastItemId);
-
-    return value_changed;
-}
-
-bool ImGui::MenuItem(const char* label, const char* shortcut, bool selected, bool enabled)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    ImGuiStyle& style = g.Style;
-    ImVec2 pos = window->DC.CursorPos;
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    ImGuiSelectableFlags flags = ImGuiSelectableFlags_PressedOnRelease | (enabled ? 0 : ImGuiSelectableFlags_Disabled);
-    bool pressed;
-    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
-    {
-        // Mimic the exact layout spacing of BeginMenu() to allow MenuItem() inside a menu bar, which is a little misleading but may be useful
-        // Note that in this situation we render neither the shortcut neither the selected tick mark
-        float w = label_size.x;
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
-        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
-        pressed = Selectable(label, false, flags, ImVec2(w, 0.0f));
-        PopStyleVar();
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
-    }
-    else
-    {
-        ImVec2 shortcut_size = shortcut ? CalcTextSize(shortcut, NULL) : ImVec2(0.0f, 0.0f);
-        float w = window->MenuColumns.DeclColumns(label_size.x, shortcut_size.x, (float)(int)(g.FontSize * 1.20f)); // Feedback for next frame
-        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
-        pressed = Selectable(label, false, flags | ImGuiSelectableFlags_DrawFillAvailWidth, ImVec2(w, 0.0f));
-        if (shortcut_size.x > 0.0f)
-        {
-            PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-            RenderText(pos + ImVec2(window->MenuColumns.Pos[1] + extra_w, 0.0f), shortcut, NULL, false);
-            PopStyleColor();
-        }
-        if (selected)
-            RenderCheckMark(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.40f, g.FontSize * 0.134f * 0.5f), GetColorU32(enabled ? ImGuiCol_Text : ImGuiCol_TextDisabled), g.FontSize  * 0.866f);
-    }
-    return pressed;
-}
-
-bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected, bool enabled)
-{
-    if (MenuItem(label, shortcut, p_selected ? *p_selected : false, enabled))
-    {
-        if (p_selected)
-            *p_selected = !*p_selected;
-        return true;
-    }
-    return false;
-}
-
-// For the main menu bar, which cannot be moved, we honor g.Style.DisplaySafeAreaPadding to ensure text can be visible on a TV set.
-bool ImGui::BeginMainMenuBar()
-{
-    ImGuiContext& g = *GImGui;
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(g.Style.DisplaySafeAreaPadding.x, ImMax(g.Style.DisplaySafeAreaPadding.y - g.Style.FramePadding.y, 0.0f));
-    SetNextWindowPos(ImVec2(0.0f, 0.0f));
-    SetNextWindowSize(ImVec2(g.IO.DisplaySize.x, g.NextWindowData.MenuBarOffsetMinVal.y + g.FontBaseSize + g.Style.FramePadding.y));
-    PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
-    PushStyleVar(ImGuiStyleVar_WindowMinSize, ImVec2(0,0));
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_MenuBar;
-    bool is_open = Begin("##MainMenuBar", NULL, window_flags) && BeginMenuBar();
-    PopStyleVar(2);
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(0.0f, 0.0f);
-    if (!is_open)
-    {
-        End();
-        return false;
-    }
-    return true;
-}
-
-void ImGui::EndMainMenuBar()
-{
-    EndMenuBar();
-
-    // When the user has left the menu layer (typically: closed menus through activation of an item), we restore focus to the previous window
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow == g.NavWindow && g.NavLayer == 0)
-        FocusFrontMostActiveWindowIgnoringOne(g.NavWindow);
-
-    End();
-}
-
-bool ImGui::BeginMenuBar()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-    if (!(window->Flags & ImGuiWindowFlags_MenuBar))
-        return false;
-
-    IM_ASSERT(!window->DC.MenuBarAppending);
-    BeginGroup(); // Backup position on layer 0
-    PushID("##menubar");
-
-    // We don't clip with current window clipping rectangle as it is already set to the area below. However we clip with window full rect.
-    // We remove 1 worth of rounding to Max.x to that text in long menus and small windows don't tend to display over the lower-right rounded area, which looks particularly glitchy.
-    ImRect bar_rect = window->MenuBarRect();
-    ImRect clip_rect(ImFloor(bar_rect.Min.x + 0.5f), ImFloor(bar_rect.Min.y + window->WindowBorderSize + 0.5f), ImFloor(ImMax(bar_rect.Min.x, bar_rect.Max.x - window->WindowRounding) + 0.5f), ImFloor(bar_rect.Max.y + 0.5f));
-    clip_rect.ClipWith(window->OuterRectClipped);
-    PushClipRect(clip_rect.Min, clip_rect.Max, false);
-
-    window->DC.CursorPos = ImVec2(bar_rect.Min.x + window->DC.MenuBarOffset.x, bar_rect.Min.y + window->DC.MenuBarOffset.y);
-    window->DC.LayoutType = ImGuiLayoutType_Horizontal;
-    window->DC.NavLayerCurrent++;
-    window->DC.NavLayerCurrentMask <<= 1;
-    window->DC.MenuBarAppending = true;
-    AlignTextToFramePadding();
-    return true;
-}
-
-void ImGui::EndMenuBar()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-    ImGuiContext& g = *GImGui;
-
-    // Nav: When a move request within one of our child menu failed, capture the request to navigate among our siblings.
-    if (NavMoveRequestButNoResultYet() && (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right) && (g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
-    {
-        ImGuiWindow* nav_earliest_child = g.NavWindow;
-        while (nav_earliest_child->ParentWindow && (nav_earliest_child->ParentWindow->Flags & ImGuiWindowFlags_ChildMenu))
-            nav_earliest_child = nav_earliest_child->ParentWindow;
-        if (nav_earliest_child->ParentWindow == window && nav_earliest_child->DC.ParentLayoutType == ImGuiLayoutType_Horizontal && g.NavMoveRequestForward == ImGuiNavForward_None)
-        {
-            // To do so we claim focus back, restore NavId and then process the movement request for yet another frame.
-            // This involve a one-frame delay which isn't very problematic in this situation. We could remove it by scoring in advance for multiple window (probably not worth the hassle/cost)
-            IM_ASSERT(window->DC.NavLayerActiveMaskNext & 0x02); // Sanity check
-            FocusWindow(window);
-            SetNavIDWithRectRel(window->NavLastIds[1], 1, window->NavRectRel[1]);
-            g.NavLayer = 1;
-            g.NavDisableHighlight = true; // Hide highlight for the current frame so we don't see the intermediary selection.
-            g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
-            NavMoveRequestCancel();
-        }
-    }
-
-    IM_ASSERT(window->Flags & ImGuiWindowFlags_MenuBar);
-    IM_ASSERT(window->DC.MenuBarAppending);
-    PopClipRect();
-    PopID();
-    window->DC.MenuBarOffset.x = window->DC.CursorPos.x - window->MenuBarRect().Min.x; // Save horizontal position so next append can reuse it. This is kinda equivalent to a per-layer CursorPos.
-    window->DC.GroupStack.back().AdvanceCursor = false;
-    EndGroup(); // Restore position on layer 0
-    window->DC.LayoutType = ImGuiLayoutType_Vertical;
-    window->DC.NavLayerCurrent--;
-    window->DC.NavLayerCurrentMask >>= 1;
-    window->DC.MenuBarAppending = false;
-}
-
-bool ImGui::BeginMenu(const char* label, bool enabled)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    bool pressed;
-    bool menu_is_open = IsPopupOpen(id);
-    bool menuset_is_open = !(window->Flags & ImGuiWindowFlags_Popup) && (g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].OpenParentId == window->IDStack.back());
-    ImGuiWindow* backed_nav_window = g.NavWindow;
-    if (menuset_is_open)
-        g.NavWindow = window;  // Odd hack to allow hovering across menus of a same menu-set (otherwise we wouldn't be able to hover parent)
-
-    // The reference position stored in popup_pos will be used by Begin() to find a suitable position for the child menu (using FindBestWindowPosForPopup).
-    ImVec2 popup_pos, pos = window->DC.CursorPos;
-    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
-    {
-        // Menu inside an horizontal menu bar
-        // Selectable extend their highlight by half ItemSpacing in each direction.
-        // For ChildMenu, the popup position will be overwritten by the call to FindBestWindowPosForPopup() in Begin()
-        popup_pos = ImVec2(pos.x - window->WindowPadding.x, pos.y - style.FramePadding.y + window->MenuBarHeight());
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
-        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
-        float w = label_size.x;
-        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
-        PopStyleVar();
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
-    }
-    else
-    {
-        // Menu inside a menu
-        popup_pos = ImVec2(pos.x, pos.y - style.WindowPadding.y);
-        float w = window->MenuColumns.DeclColumns(label_size.x, 0.0f, (float)(int)(g.FontSize * 1.20f)); // Feedback to next frame
-        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
-        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | ImGuiSelectableFlags_DrawFillAvailWidth | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
-        if (!enabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-        RenderArrow(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.30f, 0.0f), ImGuiDir_Right);
-        if (!enabled) PopStyleColor();
-    }
-
-    const bool hovered = enabled && ItemHoverable(window->DC.LastItemRect, id);
-    if (menuset_is_open)
-        g.NavWindow = backed_nav_window;
-
-    bool want_open = false, want_close = false;
-    if (window->DC.LayoutType == ImGuiLayoutType_Vertical) // (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
-    {
-        // Implement http://bjk5.com/post/44698559168/breaking-down-amazons-mega-dropdown to avoid using timers, so menus feels more reactive.
-        bool moving_within_opened_triangle = false;
-        if (g.HoveredWindow == window && g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].ParentWindow == window && !(window->Flags & ImGuiWindowFlags_MenuBar))
-        {
-            if (ImGuiWindow* next_window = g.OpenPopupStack[g.CurrentPopupStack.Size].Window)
-            {
-                ImRect next_window_rect = next_window->Rect();
-                ImVec2 ta = g.IO.MousePos - g.IO.MouseDelta;
-                ImVec2 tb = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetTL() : next_window_rect.GetTR();
-                ImVec2 tc = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetBL() : next_window_rect.GetBR();
-                float extra = ImClamp(ImFabs(ta.x - tb.x) * 0.30f, 5.0f, 30.0f); // add a bit of extra slack.
-                ta.x += (window->Pos.x < next_window->Pos.x) ? -0.5f : +0.5f;   // to avoid numerical issues
-                tb.y = ta.y + ImMax((tb.y - extra) - ta.y, -100.0f);            // triangle is maximum 200 high to limit the slope and the bias toward large sub-menus // FIXME: Multiply by fb_scale?
-                tc.y = ta.y + ImMin((tc.y + extra) - ta.y, +100.0f);
-                moving_within_opened_triangle = ImTriangleContainsPoint(ta, tb, tc, g.IO.MousePos);
-                //window->DrawList->PushClipRectFullScreen(); window->DrawList->AddTriangleFilled(ta, tb, tc, moving_within_opened_triangle ? IM_COL32(0,128,0,128) : IM_COL32(128,0,0,128)); window->DrawList->PopClipRect(); // Debug
-            }
-        }
-
-        want_close = (menu_is_open && !hovered && g.HoveredWindow == window && g.HoveredIdPreviousFrame != 0 && g.HoveredIdPreviousFrame != id && !moving_within_opened_triangle);
-        want_open = (!menu_is_open && hovered && !moving_within_opened_triangle) || (!menu_is_open && hovered && pressed);
-
-        if (g.NavActivateId == id)
-        {
-            want_close = menu_is_open;
-            want_open = !menu_is_open;
-        }
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right) // Nav-Right to open
-        {
-            want_open = true;
-            NavMoveRequestCancel();
-        }
-    }
-    else
-    {
-        // Menu bar
-        if (menu_is_open && pressed && menuset_is_open) // Click an open menu again to close it
-        {
-            want_close = true;
-            want_open = menu_is_open = false;
-        }
-        else if (pressed || (hovered && menuset_is_open && !menu_is_open)) // First click to open, then hover to open others
-        {
-            want_open = true;
-        }
-        else if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Down) // Nav-Down to open
-        {
-            want_open = true;
-            NavMoveRequestCancel();
-        }
-    }
-
-    if (!enabled) // explicitly close if an open menu becomes disabled, facilitate users code a lot in pattern such as 'if (BeginMenu("options", has_object)) { ..use object.. }'
-        want_close = true;
-    if (want_close && IsPopupOpen(id))
-        ClosePopupToLevel(g.CurrentPopupStack.Size);
-
-    if (!menu_is_open && want_open && g.OpenPopupStack.Size > g.CurrentPopupStack.Size)
-    {
-        // Don't recycle same menu level in the same frame, first close the other menu and yield for a frame.
-        OpenPopup(label);
-        return false;
-    }
-
-    menu_is_open |= want_open;
-    if (want_open)
-        OpenPopup(label);
-
-    if (menu_is_open)
-    {
-        // Sub-menus are ChildWindow so that mouse can be hovering across them (otherwise top-most popup menu would steal focus and not allow hovering on parent menu)
-        SetNextWindowPos(popup_pos, ImGuiCond_Always);
-        ImGuiWindowFlags flags = ImGuiWindowFlags_ChildMenu | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoNavFocus;
-        if (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
-            flags |= ImGuiWindowFlags_ChildWindow;
-        menu_is_open = BeginPopupEx(id, flags); // menu_is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-    }
-
-    return menu_is_open;
-}
-
-void ImGui::EndMenu()
-{
-    // Nav: When a left move request _within our child menu_ failed, close the menu.
-    // A menu doesn't close itself because EndMenuBar() wants the catch the last Left<>Right inputs.
-    // However, it means that with the current code, a BeginMenu() from outside another menu or a menu-bar won't be closable with the Left direction.
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    if (g.NavWindow && g.NavWindow->ParentWindow == window && g.NavMoveDir == ImGuiDir_Left && NavMoveRequestButNoResultYet() && window->DC.LayoutType == ImGuiLayoutType_Vertical)
-    {
-        ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-        NavMoveRequestCancel();
-    }
-
-    EndPopup();
-}
-
-// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-void ImGui::ColorTooltip(const char* text, const float* col, ImGuiColorEditFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-
-    int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
-    BeginTooltipEx(0, true);
-
-    const char* text_end = text ? FindRenderedTextEnd(text, NULL) : text;
-    if (text_end > text)
-    {
-        TextUnformatted(text, text_end);
-        Separator();
-    }
-
-    ImVec2 sz(g.FontSize * 3 + g.Style.FramePadding.y * 2, g.FontSize * 3 + g.Style.FramePadding.y * 2);
-    ColorButton("##preview", ImVec4(col[0], col[1], col[2], col[3]), (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf)) | ImGuiColorEditFlags_NoTooltip, sz);
-    SameLine();
-    if (flags & ImGuiColorEditFlags_NoAlpha)
-        Text("#%02X%02X%02X\nR: %d, G: %d, B: %d\n(%.3f, %.3f, %.3f)", cr, cg, cb, cr, cg, cb, col[0], col[1], col[2]);
-    else
-        Text("#%02X%02X%02X%02X\nR:%d, G:%d, B:%d, A:%d\n(%.3f, %.3f, %.3f, %.3f)", cr, cg, cb, ca, cr, cg, cb, ca, col[0], col[1], col[2], col[3]);
-    EndTooltip();
-}
-
-static inline ImU32 ImAlphaBlendColor(ImU32 col_a, ImU32 col_b)
-{
-    float t = ((col_b >> IM_COL32_A_SHIFT) & 0xFF) / 255.f;
-    int r = ImLerp((int)(col_a >> IM_COL32_R_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_R_SHIFT) & 0xFF, t);
-    int g = ImLerp((int)(col_a >> IM_COL32_G_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_G_SHIFT) & 0xFF, t);
-    int b = ImLerp((int)(col_a >> IM_COL32_B_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_B_SHIFT) & 0xFF, t);
-    return IM_COL32(r, g, b, 0xFF);
-}
-
-// NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Caller currently responsible for avoiding that.
-// I spent a non reasonable amount of time trying to getting this right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and offsets, and eventually gave up... probably more reasonable to disable rounding alltogether.
-void ImGui::RenderColorRectWithAlphaCheckerboard(ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, int rounding_corners_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF)
-    {
-        ImU32 col_bg1 = GetColorU32(ImAlphaBlendColor(IM_COL32(204,204,204,255), col));
-        ImU32 col_bg2 = GetColorU32(ImAlphaBlendColor(IM_COL32(128,128,128,255), col));
-        window->DrawList->AddRectFilled(p_min, p_max, col_bg1, rounding, rounding_corners_flags);
-
-        int yi = 0;
-        for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++)
-        {
-            float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y);
-            if (y2 <= y1)
-                continue;
-            for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f)
-            {
-                float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x);
-                if (x2 <= x1)
-                    continue;
-                int rounding_corners_flags_cell = 0;
-                if (y1 <= p_min.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopRight; }
-                if (y2 >= p_max.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotRight; }
-                rounding_corners_flags_cell &= rounding_corners_flags;
-                window->DrawList->AddRectFilled(ImVec2(x1,y1), ImVec2(x2,y2), col_bg2, rounding_corners_flags_cell ? rounding : 0.0f, rounding_corners_flags_cell);
-            }
-        }
-    }
-    else
-    {
-        window->DrawList->AddRectFilled(p_min, p_max, col, rounding, rounding_corners_flags);
-    }
-}
-
-void ImGui::SetColorEditOptions(ImGuiColorEditFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    if ((flags & ImGuiColorEditFlags__InputsMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__InputsMask;
-    if ((flags & ImGuiColorEditFlags__DataTypeMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__DataTypeMask;
-    if ((flags & ImGuiColorEditFlags__PickerMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__PickerMask;
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__InputsMask)));   // Check only 1 option is selected
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__DataTypeMask))); // Check only 1 option is selected
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask)));   // Check only 1 option is selected
-    g.ColorEditOptions = flags;
-}
-
-// A little colored square. Return true when clicked.
-// FIXME: May want to display/ignore the alpha component in the color display? Yet show it in the tooltip.
-// 'desc_id' is not called 'label' because we don't display it next to the button, but only in the tooltip.
-bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFlags flags, ImVec2 size)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiID id = window->GetID(desc_id);
-    float default_size = GetFrameHeight();
-    if (size.x == 0.0f)
-        size.x = default_size;
-    if (size.y == 0.0f)
-        size.y = default_size;
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    if (flags & ImGuiColorEditFlags_NoAlpha)
-        flags &= ~(ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf);
-
-    ImVec4 col_without_alpha(col.x, col.y, col.z, 1.0f);
-    float grid_step = ImMin(size.x, size.y) / 2.99f;
-    float rounding = ImMin(g.Style.FrameRounding, grid_step * 0.5f);
-    ImRect bb_inner = bb;
-    float off = -0.75f; // The border (using Col_FrameBg) tends to look off when color is near-opaque and rounding is enabled. This offset seemed like a good middle ground to reduce those artifacts.
-    bb_inner.Expand(off);
-    if ((flags & ImGuiColorEditFlags_AlphaPreviewHalf) && col.w < 1.0f)
-    {
-        float mid_x = (float)(int)((bb_inner.Min.x + bb_inner.Max.x) * 0.5f + 0.5f);
-        RenderColorRectWithAlphaCheckerboard(ImVec2(bb_inner.Min.x + grid_step, bb_inner.Min.y), bb_inner.Max, GetColorU32(col), grid_step, ImVec2(-grid_step + off, off), rounding, ImDrawCornerFlags_TopRight| ImDrawCornerFlags_BotRight);
-        window->DrawList->AddRectFilled(bb_inner.Min, ImVec2(mid_x, bb_inner.Max.y), GetColorU32(col_without_alpha), rounding, ImDrawCornerFlags_TopLeft|ImDrawCornerFlags_BotLeft);
-    }
-    else
-    {
-        // Because GetColorU32() multiplies by the global style Alpha and we don't want to display a checkerboard if the source code had no alpha
-        ImVec4 col_source = (flags & ImGuiColorEditFlags_AlphaPreview) ? col : col_without_alpha;
-        if (col_source.w < 1.0f)
-            RenderColorRectWithAlphaCheckerboard(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), grid_step, ImVec2(off, off), rounding);
-        else
-            window->DrawList->AddRectFilled(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), rounding, ImDrawCornerFlags_All);
-    }
-    RenderNavHighlight(bb, id);
-    if (g.Style.FrameBorderSize > 0.0f)
-        RenderFrameBorder(bb.Min, bb.Max, rounding);
-    else
-        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), rounding); // Color button are often in need of some sort of border
-
-    // Drag and Drop Source
-    // NB: The ActiveId test is merely an optional micro-optimization, BeginDragDropSource() does the same test.
-    if (g.ActiveId == id && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropSource())
-    {
-        if (flags & ImGuiColorEditFlags_NoAlpha)
-            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F, &col, sizeof(float) * 3, ImGuiCond_Once);
-        else
-            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F, &col, sizeof(float) * 4, ImGuiCond_Once);
-        ColorButton(desc_id, col, flags);
-        SameLine();
-        TextUnformatted("Color");
-        EndDragDropSource();
-    }
-
-    // Tooltip
-    if (!(flags & ImGuiColorEditFlags_NoTooltip) && hovered)
-        ColorTooltip(desc_id, &col.x, flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf));
-
-    if (pressed)
-        MarkItemEdited(id);
-
-    return pressed;
-}
-
-bool ImGui::ColorEdit3(const char* label, float col[3], ImGuiColorEditFlags flags)
-{
-    return ColorEdit4(label, col, flags | ImGuiColorEditFlags_NoAlpha);
-}
-
-void ImGui::ColorEditOptionsPopup(const float* col, ImGuiColorEditFlags flags)
-{
-    bool allow_opt_inputs = !(flags & ImGuiColorEditFlags__InputsMask);
-    bool allow_opt_datatype = !(flags & ImGuiColorEditFlags__DataTypeMask);
-    if ((!allow_opt_inputs && !allow_opt_datatype) || !BeginPopup("context"))
-        return;
-    ImGuiContext& g = *GImGui;
-    ImGuiColorEditFlags opts = g.ColorEditOptions;
-    if (allow_opt_inputs)
-    {
-        if (RadioButton("RGB", (opts & ImGuiColorEditFlags_RGB) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_RGB;
-        if (RadioButton("HSV", (opts & ImGuiColorEditFlags_HSV) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HSV;
-        if (RadioButton("HEX", (opts & ImGuiColorEditFlags_HEX) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HEX;
-    }
-    if (allow_opt_datatype)
-    {
-        if (allow_opt_inputs) Separator();
-        if (RadioButton("0..255",     (opts & ImGuiColorEditFlags_Uint8) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Uint8;
-        if (RadioButton("0.00..1.00", (opts & ImGuiColorEditFlags_Float) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Float;
-    }
-
-    if (allow_opt_inputs || allow_opt_datatype)
-        Separator();
-    if (Button("Copy as..", ImVec2(-1,0)))
-        OpenPopup("Copy");
-    if (BeginPopup("Copy"))
-    {
-        int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
-        char buf[64];
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%.3ff, %.3ff, %.3ff, %.3ff)", col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%d,%d,%d,%d)", cr, cg, cb, ca);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        if (flags & ImGuiColorEditFlags_NoAlpha)
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X", cr, cg, cb);
-        else
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X%02X", cr, cg, cb, ca);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        EndPopup();
-    }
-
-    g.ColorEditOptions = opts;
-    EndPopup();
-}
-
-void ImGui::ColorPickerOptionsPopup(const float* ref_col, ImGuiColorEditFlags flags)
-{
-    bool allow_opt_picker = !(flags & ImGuiColorEditFlags__PickerMask);
-    bool allow_opt_alpha_bar = !(flags & ImGuiColorEditFlags_NoAlpha) && !(flags & ImGuiColorEditFlags_AlphaBar);
-    if ((!allow_opt_picker && !allow_opt_alpha_bar) || !ImGui::BeginPopup("context"))
-        return;
-    ImGuiContext& g = *GImGui;
-    if (allow_opt_picker)
-    {
-        ImVec2 picker_size(g.FontSize * 8, ImMax(g.FontSize * 8 - (ImGui::GetFrameHeight() + g.Style.ItemInnerSpacing.x), 1.0f)); // FIXME: Picker size copied from main picker function
-        ImGui::PushItemWidth(picker_size.x);
-        for (int picker_type = 0; picker_type < 2; picker_type++)
-        {
-            // Draw small/thumbnail version of each picker type (over an invisible button for selection)
-            if (picker_type > 0) ImGui::Separator();
-            ImGui::PushID(picker_type);
-            ImGuiColorEditFlags picker_flags = ImGuiColorEditFlags_NoInputs|ImGuiColorEditFlags_NoOptions|ImGuiColorEditFlags_NoLabel|ImGuiColorEditFlags_NoSidePreview|(flags & ImGuiColorEditFlags_NoAlpha);
-            if (picker_type == 0) picker_flags |= ImGuiColorEditFlags_PickerHueBar;
-            if (picker_type == 1) picker_flags |= ImGuiColorEditFlags_PickerHueWheel;
-            ImVec2 backup_pos = ImGui::GetCursorScreenPos();
-            if (ImGui::Selectable("##selectable", false, 0, picker_size)) // By default, Selectable() is closing popup
-                g.ColorEditOptions = (g.ColorEditOptions & ~ImGuiColorEditFlags__PickerMask) | (picker_flags & ImGuiColorEditFlags__PickerMask);
-            ImGui::SetCursorScreenPos(backup_pos);
-            ImVec4 dummy_ref_col;
-            memcpy(&dummy_ref_col.x, ref_col, sizeof(float) * (picker_flags & ImGuiColorEditFlags_NoAlpha ? 3 : 4));
-            ImGui::ColorPicker4("##dummypicker", &dummy_ref_col.x, picker_flags);
-            ImGui::PopID();
-        }
-        ImGui::PopItemWidth();
-    }
-    if (allow_opt_alpha_bar)
-    {
-        if (allow_opt_picker) ImGui::Separator();
-        ImGui::CheckboxFlags("Alpha Bar", (unsigned int*)&g.ColorEditOptions, ImGuiColorEditFlags_AlphaBar);
-    }
-    ImGui::EndPopup();
-}
-
-// Edit colors components (each component in 0.0f..1.0f range).
-// See enum ImGuiColorEditFlags_ for available options. e.g. Only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-// With typical options: Left-click on colored square to open color picker. Right-click to open option menu. CTRL-Click over input fields to edit them and TAB to go to next item.
-bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float square_sz = GetFrameHeight();
-    const float w_extra = (flags & ImGuiColorEditFlags_NoSmallPreview) ? 0.0f : (square_sz + style.ItemInnerSpacing.x);
-    const float w_items_all = CalcItemWidth() - w_extra;
-    const char* label_display_end = FindRenderedTextEnd(label);
-
-    BeginGroup();
-    PushID(label);
-
-    // If we're not showing any slider there's no point in doing any HSV conversions
-    const ImGuiColorEditFlags flags_untouched = flags;
-    if (flags & ImGuiColorEditFlags_NoInputs)
-        flags = (flags & (~ImGuiColorEditFlags__InputsMask)) | ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_NoOptions;
-
-    // Context menu: display and modify options (before defaults are applied)
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-        ColorEditOptionsPopup(col, flags);
-
-    // Read stored options
-    if (!(flags & ImGuiColorEditFlags__InputsMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__InputsMask);
-    if (!(flags & ImGuiColorEditFlags__DataTypeMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__DataTypeMask);
-    if (!(flags & ImGuiColorEditFlags__PickerMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__PickerMask);
-    flags |= (g.ColorEditOptions & ~(ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask));
-
-    const bool alpha = (flags & ImGuiColorEditFlags_NoAlpha) == 0;
-    const bool hdr = (flags & ImGuiColorEditFlags_HDR) != 0;
-    const int components = alpha ? 4 : 3;
-
-    // Convert to the formats we need
-    float f[4] = { col[0], col[1], col[2], alpha ? col[3] : 1.0f };
-    if (flags & ImGuiColorEditFlags_HSV)
-        ColorConvertRGBtoHSV(f[0], f[1], f[2], f[0], f[1], f[2]);
-    int i[4] = { IM_F32_TO_INT8_UNBOUND(f[0]), IM_F32_TO_INT8_UNBOUND(f[1]), IM_F32_TO_INT8_UNBOUND(f[2]), IM_F32_TO_INT8_UNBOUND(f[3]) };
-
-    bool value_changed = false;
-    bool value_changed_as_float = false;
-
-    if ((flags & (ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_HSV)) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        // RGB/HSV 0..255 Sliders
-        const float w_item_one  = ImMax(1.0f, (float)(int)((w_items_all - (style.ItemInnerSpacing.x) * (components-1)) / (float)components));
-        const float w_item_last = ImMax(1.0f, (float)(int)(w_items_all - (w_item_one + style.ItemInnerSpacing.x) * (components-1)));
-
-        const bool hide_prefix = (w_item_one <= CalcTextSize((flags & ImGuiColorEditFlags_Float) ? "M:0.000" : "M:000").x);
-        const char* ids[4] = { "##X", "##Y", "##Z", "##W" };
-        const char* fmt_table_int[3][4] =
-        {
-            {   "%3d",   "%3d",   "%3d",   "%3d" }, // Short display
-            { "R:%3d", "G:%3d", "B:%3d", "A:%3d" }, // Long display for RGBA
-            { "H:%3d", "S:%3d", "V:%3d", "A:%3d" }  // Long display for HSVA
-        };
-        const char* fmt_table_float[3][4] =
-        {
-            {   "%0.3f",   "%0.3f",   "%0.3f",   "%0.3f" }, // Short display
-            { "R:%0.3f", "G:%0.3f", "B:%0.3f", "A:%0.3f" }, // Long display for RGBA
-            { "H:%0.3f", "S:%0.3f", "V:%0.3f", "A:%0.3f" }  // Long display for HSVA
-        };
-        const int fmt_idx = hide_prefix ? 0 : (flags & ImGuiColorEditFlags_HSV) ? 2 : 1;
-
-        PushItemWidth(w_item_one);
-        for (int n = 0; n < components; n++)
-        {
-            if (n > 0)
-                SameLine(0, style.ItemInnerSpacing.x);
-            if (n + 1 == components)
-                PushItemWidth(w_item_last);
-            if (flags & ImGuiColorEditFlags_Float)
-                value_changed = value_changed_as_float = value_changed | DragFloat(ids[n], &f[n], 1.0f/255.0f, 0.0f, hdr ? 0.0f : 1.0f, fmt_table_float[fmt_idx][n]);
-            else
-                value_changed |= DragInt(ids[n], &i[n], 1.0f, 0, hdr ? 0 : 255, fmt_table_int[fmt_idx][n]);
-            if (!(flags & ImGuiColorEditFlags_NoOptions))
-                OpenPopupOnItemClick("context");
-        }
-        PopItemWidth();
-        PopItemWidth();
-    }
-    else if ((flags & ImGuiColorEditFlags_HEX) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        // RGB Hexadecimal Input
-        char buf[64];
-        if (alpha)
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255), ImClamp(i[3],0,255));
-        else
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255));
-        PushItemWidth(w_items_all);
-        if (InputText("##Text", buf, IM_ARRAYSIZE(buf), ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase))
-        {
-            value_changed = true;
-            char* p = buf;
-            while (*p == '#' || ImCharIsBlankA(*p))
-                p++;
-            i[0] = i[1] = i[2] = i[3] = 0;
-            if (alpha)
-                sscanf(p, "%02X%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2], (unsigned int*)&i[3]); // Treat at unsigned (%X is unsigned)
-            else
-                sscanf(p, "%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2]);
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-        PopItemWidth();
-    }
-
-    ImGuiWindow* picker_active_window = NULL;
-    if (!(flags & ImGuiColorEditFlags_NoSmallPreview))
-    {
-        if (!(flags & ImGuiColorEditFlags_NoInputs))
-            SameLine(0, style.ItemInnerSpacing.x);
-
-        const ImVec4 col_v4(col[0], col[1], col[2], alpha ? col[3] : 1.0f);
-        if (ColorButton("##ColorButton", col_v4, flags))
-        {
-            if (!(flags & ImGuiColorEditFlags_NoPicker))
-            {
-                // Store current color and open a picker
-                g.ColorPickerRef = col_v4;
-                OpenPopup("picker");
-                SetNextWindowPos(window->DC.LastItemRect.GetBL() + ImVec2(-1,style.ItemSpacing.y));
-            }
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-
-        if (BeginPopup("picker"))
-        {
-            picker_active_window = g.CurrentWindow;
-            if (label != label_display_end)
-            {
-                TextUnformatted(label, label_display_end);
-                Separator();
-            }
-            ImGuiColorEditFlags picker_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaBar;
-            ImGuiColorEditFlags picker_flags = (flags_untouched & picker_flags_to_forward) | ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags_NoLabel | ImGuiColorEditFlags_AlphaPreviewHalf;
-            PushItemWidth(square_sz * 12.0f); // Use 256 + bar sizes?
-            value_changed |= ColorPicker4("##picker", col, picker_flags, &g.ColorPickerRef.x);
-            PopItemWidth();
-            EndPopup();
-        }
-    }
-
-    if (label != label_display_end && !(flags & ImGuiColorEditFlags_NoLabel))
-    {
-        SameLine(0, style.ItemInnerSpacing.x);
-        TextUnformatted(label, label_display_end);
-    }
-
-    // Convert back
-    if (picker_active_window == NULL)
-    {
-        if (!value_changed_as_float)
-            for (int n = 0; n < 4; n++)
-                f[n] = i[n] / 255.0f;
-        if (flags & ImGuiColorEditFlags_HSV)
-            ColorConvertHSVtoRGB(f[0], f[1], f[2], f[0], f[1], f[2]);
-        if (value_changed)
-        {
-            col[0] = f[0];
-            col[1] = f[1];
-            col[2] = f[2];
-            if (alpha)
-                col[3] = f[3];
-        }
-    }
-
-    PopID();
-    EndGroup();
-
-    // Drag and Drop Target
-    // NB: The flag test is merely an optional micro-optimization, BeginDragDropTarget() does the same test.
-    if ((window->DC.LastItemStatusFlags & ImGuiItemStatusFlags_HoveredRect) && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropTarget())
-    {
-        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F))
-        {
-            memcpy((float*)col, payload->Data, sizeof(float) * 3);
-            value_changed = true;
-        }
-        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F))
-        {
-            memcpy((float*)col, payload->Data, sizeof(float) * components);
-            value_changed = true;
-        }
-        EndDragDropTarget();
-    }
-
-    // When picker is being actively used, use its active id so IsItemActive() will function on ColorEdit4().
-    if (picker_active_window && g.ActiveId != 0 && g.ActiveIdWindow == picker_active_window)
-        window->DC.LastItemId = g.ActiveId;
-
-    if (value_changed)
-        MarkItemEdited(window->DC.LastItemId);
-
-    return value_changed;
-}
-
-bool ImGui::ColorPicker3(const char* label, float col[3], ImGuiColorEditFlags flags)
-{
-    float col4[4] = { col[0], col[1], col[2], 1.0f };
-    if (!ColorPicker4(label, col4, flags | ImGuiColorEditFlags_NoAlpha))
-        return false;
-    col[0] = col4[0]; col[1] = col4[1]; col[2] = col4[2];
-    return true;
-}
-
-static void RenderArrowsForVerticalBar(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, float bar_w)
-{
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x + 1,         pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Right, IM_COL32_BLACK);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x,             pos.y), half_sz,                              ImGuiDir_Right, IM_COL32_WHITE);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x - 1, pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Left,  IM_COL32_BLACK);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x,     pos.y), half_sz,                              ImGuiDir_Left,  IM_COL32_WHITE);
-}
-
-// ColorPicker
-// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-// FIXME: we adjust the big color square height based on item width, which may cause a flickering feedback loop (if automatic height makes a vertical scrollbar appears, affecting automatic width..)
-bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags flags, const float* ref_col)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    ImDrawList* draw_list = window->DrawList;
-
-    ImGuiStyle& style = g.Style;
-    ImGuiIO& io = g.IO;
-
-    PushID(label);
-    BeginGroup();
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-        flags |= ImGuiColorEditFlags_NoSmallPreview;
-
-    // Context menu: display and store options.
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-
-    // Read stored options
-    if (!(flags & ImGuiColorEditFlags__PickerMask))
-        flags |= ((g.ColorEditOptions & ImGuiColorEditFlags__PickerMask) ? g.ColorEditOptions : ImGuiColorEditFlags__OptionsDefault) & ImGuiColorEditFlags__PickerMask;
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask))); // Check that only 1 is selected
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags_AlphaBar);
-
-    // Setup
-    int components = (flags & ImGuiColorEditFlags_NoAlpha) ? 3 : 4;
-    bool alpha_bar = (flags & ImGuiColorEditFlags_AlphaBar) && !(flags & ImGuiColorEditFlags_NoAlpha);
-    ImVec2 picker_pos = window->DC.CursorPos;
-    float square_sz = GetFrameHeight();
-    float bars_width = square_sz; // Arbitrary smallish width of Hue/Alpha picking bars
-    float sv_picker_size = ImMax(bars_width * 1, CalcItemWidth() - (alpha_bar ? 2 : 1) * (bars_width + style.ItemInnerSpacing.x)); // Saturation/Value picking box
-    float bar0_pos_x = picker_pos.x + sv_picker_size + style.ItemInnerSpacing.x;
-    float bar1_pos_x = bar0_pos_x + bars_width + style.ItemInnerSpacing.x;
-    float bars_triangles_half_sz = (float)(int)(bars_width * 0.20f);
-
-    float backup_initial_col[4];
-    memcpy(backup_initial_col, col, components * sizeof(float));
-
-    float wheel_thickness = sv_picker_size * 0.08f;
-    float wheel_r_outer = sv_picker_size * 0.50f;
-    float wheel_r_inner = wheel_r_outer - wheel_thickness;
-    ImVec2 wheel_center(picker_pos.x + (sv_picker_size + bars_width)*0.5f, picker_pos.y + sv_picker_size*0.5f);
-
-    // Note: the triangle is displayed rotated with triangle_pa pointing to Hue, but most coordinates stays unrotated for logic.
-    float triangle_r = wheel_r_inner - (int)(sv_picker_size * 0.027f);
-    ImVec2 triangle_pa = ImVec2(triangle_r, 0.0f); // Hue point.
-    ImVec2 triangle_pb = ImVec2(triangle_r * -0.5f, triangle_r * -0.866025f); // Black point.
-    ImVec2 triangle_pc = ImVec2(triangle_r * -0.5f, triangle_r * +0.866025f); // White point.
-
-    float H,S,V;
-    ColorConvertRGBtoHSV(col[0], col[1], col[2], H, S, V);
-
-    bool value_changed = false, value_changed_h = false, value_changed_sv = false;
-
-    PushItemFlag(ImGuiItemFlags_NoNav, true);
-    if (flags & ImGuiColorEditFlags_PickerHueWheel)
-    {
-        // Hue wheel + SV triangle logic
-        InvisibleButton("hsv", ImVec2(sv_picker_size + style.ItemInnerSpacing.x + bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            ImVec2 initial_off = g.IO.MouseClickedPos[0] - wheel_center;
-            ImVec2 current_off = g.IO.MousePos - wheel_center;
-            float initial_dist2 = ImLengthSqr(initial_off);
-            if (initial_dist2 >= (wheel_r_inner-1)*(wheel_r_inner-1) && initial_dist2 <= (wheel_r_outer+1)*(wheel_r_outer+1))
-            {
-                // Interactive with Hue wheel
-                H = ImAtan2(current_off.y, current_off.x) / IM_PI*0.5f;
-                if (H < 0.0f)
-                    H += 1.0f;
-                value_changed = value_changed_h = true;
-            }
-            float cos_hue_angle = ImCos(-H * 2.0f * IM_PI);
-            float sin_hue_angle = ImSin(-H * 2.0f * IM_PI);
-            if (ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, ImRotate(initial_off, cos_hue_angle, sin_hue_angle)))
-            {
-                // Interacting with SV triangle
-                ImVec2 current_off_unrotated = ImRotate(current_off, cos_hue_angle, sin_hue_angle);
-                if (!ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated))
-                    current_off_unrotated = ImTriangleClosestPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated);
-                float uu, vv, ww;
-                ImTriangleBarycentricCoords(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated, uu, vv, ww);
-                V = ImClamp(1.0f - vv, 0.0001f, 1.0f);
-                S = ImClamp(uu / V, 0.0001f, 1.0f);
-                value_changed = value_changed_sv = true;
-            }
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-    }
-    else if (flags & ImGuiColorEditFlags_PickerHueBar)
-    {
-        // SV rectangle logic
-        InvisibleButton("sv", ImVec2(sv_picker_size, sv_picker_size));
-        if (IsItemActive())
-        {
-            S = ImSaturate((io.MousePos.x - picker_pos.x) / (sv_picker_size-1));
-            V = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = value_changed_sv = true;
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-
-        // Hue bar logic
-        SetCursorScreenPos(ImVec2(bar0_pos_x, picker_pos.y));
-        InvisibleButton("hue", ImVec2(bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            H = ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = value_changed_h = true;
-        }
-    }
-
-    // Alpha bar logic
-    if (alpha_bar)
-    {
-        SetCursorScreenPos(ImVec2(bar1_pos_x, picker_pos.y));
-        InvisibleButton("alpha", ImVec2(bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            col[3] = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = true;
-        }
-    }
-    PopItemFlag(); // ImGuiItemFlags_NoNav
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-    {
-        SameLine(0, style.ItemInnerSpacing.x);
-        BeginGroup();
-    }
-
-    if (!(flags & ImGuiColorEditFlags_NoLabel))
-    {
-        const char* label_display_end = FindRenderedTextEnd(label);
-        if (label != label_display_end)
-        {
-            if ((flags & ImGuiColorEditFlags_NoSidePreview))
-                SameLine(0, style.ItemInnerSpacing.x);
-            TextUnformatted(label, label_display_end);
-        }
-    }
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-    {
-        PushItemFlag(ImGuiItemFlags_NoNavDefaultFocus, true);
-        ImVec4 col_v4(col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
-        if ((flags & ImGuiColorEditFlags_NoLabel))
-            Text("Current");
-        ColorButton("##current", col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2));
-        if (ref_col != NULL)
-        {
-            Text("Original");
-            ImVec4 ref_col_v4(ref_col[0], ref_col[1], ref_col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : ref_col[3]);
-            if (ColorButton("##original", ref_col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2)))
-            {
-                memcpy(col, ref_col, components * sizeof(float));
-                value_changed = true;
-            }
-        }
-        PopItemFlag();
-        EndGroup();
-    }
-
-    // Convert back color to RGB
-    if (value_changed_h || value_changed_sv)
-        ColorConvertHSVtoRGB(H >= 1.0f ? H - 10 * 1e-6f : H, S > 0.0f ? S : 10*1e-6f, V > 0.0f ? V : 1e-6f, col[0], col[1], col[2]);
-
-    // R,G,B and H,S,V slider color editor
-    bool value_changed_fix_hue_wrap = false;
-    if ((flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        PushItemWidth((alpha_bar ? bar1_pos_x : bar0_pos_x) + bars_width - picker_pos.x);
-        ImGuiColorEditFlags sub_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoOptions | ImGuiColorEditFlags_NoSmallPreview | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf;
-        ImGuiColorEditFlags sub_flags = (flags & sub_flags_to_forward) | ImGuiColorEditFlags_NoPicker;
-        if (flags & ImGuiColorEditFlags_RGB || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            if (ColorEdit4("##rgb", col, sub_flags | ImGuiColorEditFlags_RGB))
-            {
-                // FIXME: Hackily differenciating using the DragInt (ActiveId != 0 && !ActiveIdAllowOverlap) vs. using the InputText or DropTarget.
-                // For the later we don't want to run the hue-wrap canceling code. If you are well versed in HSV picker please provide your input! (See #2050)
-                value_changed_fix_hue_wrap = (g.ActiveId != 0 && !g.ActiveIdAllowOverlap);
-                value_changed = true;
-            }
-        if (flags & ImGuiColorEditFlags_HSV || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            value_changed |= ColorEdit4("##hsv", col, sub_flags | ImGuiColorEditFlags_HSV);
-        if (flags & ImGuiColorEditFlags_HEX || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            value_changed |= ColorEdit4("##hex", col, sub_flags | ImGuiColorEditFlags_HEX);
-        PopItemWidth();
-    }
-
-    // Try to cancel hue wrap (after ColorEdit4 call), if any
-    if (value_changed_fix_hue_wrap)
-    {
-        float new_H, new_S, new_V;
-        ColorConvertRGBtoHSV(col[0], col[1], col[2], new_H, new_S, new_V);
-        if (new_H <= 0 && H > 0)
-        {
-            if (new_V <= 0 && V != new_V)
-                ColorConvertHSVtoRGB(H, S, new_V <= 0 ? V * 0.5f : new_V, col[0], col[1], col[2]);
-            else if (new_S <= 0)
-                ColorConvertHSVtoRGB(H, new_S <= 0 ? S * 0.5f : new_S, new_V, col[0], col[1], col[2]);
-        }
-    }
-
-    ImVec4 hue_color_f(1, 1, 1, 1); ColorConvertHSVtoRGB(H, 1, 1, hue_color_f.x, hue_color_f.y, hue_color_f.z);
-    ImU32 hue_color32 = ColorConvertFloat4ToU32(hue_color_f);
-    ImU32 col32_no_alpha = ColorConvertFloat4ToU32(ImVec4(col[0], col[1], col[2], 1.0f));
-
-    const ImU32 hue_colors[6+1] = { IM_COL32(255,0,0,255), IM_COL32(255,255,0,255), IM_COL32(0,255,0,255), IM_COL32(0,255,255,255), IM_COL32(0,0,255,255), IM_COL32(255,0,255,255), IM_COL32(255,0,0,255) };
-    ImVec2 sv_cursor_pos;
-
-    if (flags & ImGuiColorEditFlags_PickerHueWheel)
-    {
-        // Render Hue Wheel
-        const float aeps = 1.5f / wheel_r_outer; // Half a pixel arc length in radians (2pi cancels out).
-        const int segment_per_arc = ImMax(4, (int)wheel_r_outer / 12);
-        for (int n = 0; n < 6; n++)
-        {
-            const float a0 = (n)     /6.0f * 2.0f * IM_PI - aeps;
-            const float a1 = (n+1.0f)/6.0f * 2.0f * IM_PI + aeps;
-            const int vert_start_idx = draw_list->VtxBuffer.Size;
-            draw_list->PathArcTo(wheel_center, (wheel_r_inner + wheel_r_outer)*0.5f, a0, a1, segment_per_arc);
-            draw_list->PathStroke(IM_COL32_WHITE, false, wheel_thickness);
-            const int vert_end_idx = draw_list->VtxBuffer.Size;
-
-            // Paint colors over existing vertices
-            ImVec2 gradient_p0(wheel_center.x + ImCos(a0) * wheel_r_inner, wheel_center.y + ImSin(a0) * wheel_r_inner);
-            ImVec2 gradient_p1(wheel_center.x + ImCos(a1) * wheel_r_inner, wheel_center.y + ImSin(a1) * wheel_r_inner);
-            ShadeVertsLinearColorGradientKeepAlpha(draw_list, vert_start_idx, vert_end_idx, gradient_p0, gradient_p1, hue_colors[n], hue_colors[n+1]);
-        }
-
-        // Render Cursor + preview on Hue Wheel
-        float cos_hue_angle = ImCos(H * 2.0f * IM_PI);
-        float sin_hue_angle = ImSin(H * 2.0f * IM_PI);
-        ImVec2 hue_cursor_pos(wheel_center.x + cos_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f, wheel_center.y + sin_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f);
-        float hue_cursor_rad = value_changed_h ? wheel_thickness * 0.65f : wheel_thickness * 0.55f;
-        int hue_cursor_segments = ImClamp((int)(hue_cursor_rad / 1.4f), 9, 32);
-        draw_list->AddCircleFilled(hue_cursor_pos, hue_cursor_rad, hue_color32, hue_cursor_segments);
-        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad+1, IM_COL32(128,128,128,255), hue_cursor_segments);
-        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad, IM_COL32_WHITE, hue_cursor_segments);
-
-        // Render SV triangle (rotated according to hue)
-        ImVec2 tra = wheel_center + ImRotate(triangle_pa, cos_hue_angle, sin_hue_angle);
-        ImVec2 trb = wheel_center + ImRotate(triangle_pb, cos_hue_angle, sin_hue_angle);
-        ImVec2 trc = wheel_center + ImRotate(triangle_pc, cos_hue_angle, sin_hue_angle);
-        ImVec2 uv_white = GetFontTexUvWhitePixel();
-        draw_list->PrimReserve(6, 6);
-        draw_list->PrimVtx(tra, uv_white, hue_color32);
-        draw_list->PrimVtx(trb, uv_white, hue_color32);
-        draw_list->PrimVtx(trc, uv_white, IM_COL32_WHITE);
-        draw_list->PrimVtx(tra, uv_white, IM_COL32_BLACK_TRANS);
-        draw_list->PrimVtx(trb, uv_white, IM_COL32_BLACK);
-        draw_list->PrimVtx(trc, uv_white, IM_COL32_BLACK_TRANS);
-        draw_list->AddTriangle(tra, trb, trc, IM_COL32(128,128,128,255), 1.5f);
-        sv_cursor_pos = ImLerp(ImLerp(trc, tra, ImSaturate(S)), trb, ImSaturate(1 - V));
-    }
-    else if (flags & ImGuiColorEditFlags_PickerHueBar)
-    {
-        // Render SV Square
-        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_WHITE, hue_color32, hue_color32, IM_COL32_WHITE);
-        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_BLACK_TRANS, IM_COL32_BLACK_TRANS, IM_COL32_BLACK, IM_COL32_BLACK);
-        RenderFrameBorder(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), 0.0f);
-        sv_cursor_pos.x = ImClamp((float)(int)(picker_pos.x + ImSaturate(S)     * sv_picker_size + 0.5f), picker_pos.x + 2, picker_pos.x + sv_picker_size - 2); // Sneakily prevent the circle to stick out too much
-        sv_cursor_pos.y = ImClamp((float)(int)(picker_pos.y + ImSaturate(1 - V) * sv_picker_size + 0.5f), picker_pos.y + 2, picker_pos.y + sv_picker_size - 2);
-
-        // Render Hue Bar
-        for (int i = 0; i < 6; ++i)
-            draw_list->AddRectFilledMultiColor(ImVec2(bar0_pos_x, picker_pos.y + i * (sv_picker_size / 6)), ImVec2(bar0_pos_x + bars_width, picker_pos.y + (i + 1) * (sv_picker_size / 6)), hue_colors[i], hue_colors[i], hue_colors[i + 1], hue_colors[i + 1]);
-        float bar0_line_y = (float)(int)(picker_pos.y + H * sv_picker_size + 0.5f);
-        RenderFrameBorder(ImVec2(bar0_pos_x, picker_pos.y), ImVec2(bar0_pos_x + bars_width, picker_pos.y + sv_picker_size), 0.0f);
-        RenderArrowsForVerticalBar(draw_list, ImVec2(bar0_pos_x - 1, bar0_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
-    }
-
-    // Render cursor/preview circle (clamp S/V within 0..1 range because floating points colors may lead HSV values to be out of range)
-    float sv_cursor_rad = value_changed_sv ? 10.0f : 6.0f;
-    draw_list->AddCircleFilled(sv_cursor_pos, sv_cursor_rad, col32_no_alpha, 12);
-    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad+1, IM_COL32(128,128,128,255), 12);
-    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad, IM_COL32_WHITE, 12);
-
-    // Render alpha bar
-    if (alpha_bar)
-    {
-        float alpha = ImSaturate(col[3]);
-        ImRect bar1_bb(bar1_pos_x, picker_pos.y, bar1_pos_x + bars_width, picker_pos.y + sv_picker_size);
-        RenderColorRectWithAlphaCheckerboard(bar1_bb.Min, bar1_bb.Max, IM_COL32(0,0,0,0), bar1_bb.GetWidth() / 2.0f, ImVec2(0.0f, 0.0f));
-        draw_list->AddRectFilledMultiColor(bar1_bb.Min, bar1_bb.Max, col32_no_alpha, col32_no_alpha, col32_no_alpha & ~IM_COL32_A_MASK, col32_no_alpha & ~IM_COL32_A_MASK);
-        float bar1_line_y = (float)(int)(picker_pos.y + (1.0f - alpha) * sv_picker_size + 0.5f);
-        RenderFrameBorder(bar1_bb.Min, bar1_bb.Max, 0.0f);
-        RenderArrowsForVerticalBar(draw_list, ImVec2(bar1_pos_x - 1, bar1_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
-    }
-
-    EndGroup();
-
-    if (value_changed && memcmp(backup_initial_col, col, components * sizeof(float)) == 0)
-        value_changed = false;
-    if (value_changed)
-        MarkItemEdited(window->DC.LastItemId);
-
-    PopID();
-
-    return value_changed;
-}
-
 // Horizontal/vertical separating line
 void ImGui::Separator()
 {
@@ -13082,7 +6107,7 @@
     window->DrawList->AddLine(bb.Min, ImVec2(bb.Max.x,bb.Min.y), GetColorU32(ImGuiCol_Separator));
 
     if (g.LogEnabled)
-            LogRenderedText(NULL, IM_NEWLINE "--------------------------------");
+        LogRenderedText(NULL, IM_NEWLINE "--------------------------------");
 
     if (window->DC.ColumnsSet)
     {
@@ -13309,6 +6334,1457 @@
     window->DC.LayoutType = backup_layout_type;
 }
 
+void ImGui::Indent(float indent_w)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    window->DC.Indent.x += (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
+    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
+}
+
+void ImGui::Unindent(float indent_w)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    window->DC.Indent.x -= (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
+    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
+}
+
+//-----------------------------------------------------------------------------
+// TOOLTIPS
+//-----------------------------------------------------------------------------
+
+void ImGui::BeginTooltip()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.DragDropWithinSourceOrTarget)
+    {
+        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
+        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
+        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
+        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
+        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
+        SetNextWindowPos(tooltip_pos);
+        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
+        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
+        BeginTooltipEx(0, true);
+    }
+    else
+    {
+        BeginTooltipEx(0, false);
+    }
+}
+
+// Not exposed publicly as BeginTooltip() because bool parameters are evil. Let's see if other needs arise first.
+void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, bool override_previous_tooltip)
+{
+    ImGuiContext& g = *GImGui;
+    char window_name[16];
+    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
+    if (override_previous_tooltip)
+        if (ImGuiWindow* window = FindWindowByName(window_name))
+            if (window->Active)
+            {
+                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
+                window->Hidden = true;
+                window->HiddenFramesRegular = 1;
+                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
+            }
+    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoInputs|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoNav;
+    Begin(window_name, NULL, flags | extra_flags);
+}
+
+void ImGui::EndTooltip()
+{
+    IM_ASSERT(GetCurrentWindowRead()->Flags & ImGuiWindowFlags_Tooltip);   // Mismatched BeginTooltip()/EndTooltip() calls
+    End();
+}
+
+void ImGui::SetTooltipV(const char* fmt, va_list args)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.DragDropWithinSourceOrTarget)
+        BeginTooltip();
+    else
+        BeginTooltipEx(0, true);
+    TextV(fmt, args);
+    EndTooltip();
+}
+
+void ImGui::SetTooltip(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    SetTooltipV(fmt, args);
+    va_end(args);
+}
+
+//-----------------------------------------------------------------------------
+// POPUPS
+//-----------------------------------------------------------------------------
+
+bool ImGui::IsPopupOpen(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == id;
+}
+
+bool ImGui::IsPopupOpen(const char* str_id)
+{
+    ImGuiContext& g = *GImGui;
+    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == g.CurrentWindow->GetID(str_id);
+}
+
+ImGuiWindow* ImGui::GetFrontMostPopupModal()
+{
+    ImGuiContext& g = *GImGui;
+    for (int n = g.OpenPopupStack.Size-1; n >= 0; n--)
+        if (ImGuiWindow* popup = g.OpenPopupStack.Data[n].Window)
+            if (popup->Flags & ImGuiWindowFlags_Modal)
+                return popup;
+    return NULL;
+}
+
+void ImGui::OpenPopup(const char* str_id)
+{
+    ImGuiContext& g = *GImGui;
+    OpenPopupEx(g.CurrentWindow->GetID(str_id));
+}
+
+// Mark popup as open (toggle toward open state).
+// Popups are closed when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
+// Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
+// One open popup per level of the popup hierarchy (NB: when assigning we reset the Window member of ImGuiPopupRef to NULL)
+void ImGui::OpenPopupEx(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* parent_window = g.CurrentWindow;
+    int current_stack_size = g.CurrentPopupStack.Size;
+    ImGuiPopupRef popup_ref; // Tagged as new ref as Window will be set back to NULL if we write this into OpenPopupStack.
+    popup_ref.PopupId = id;
+    popup_ref.Window = NULL;
+    popup_ref.ParentWindow = parent_window;
+    popup_ref.OpenFrameCount = g.FrameCount;
+    popup_ref.OpenParentId = parent_window->IDStack.back();
+    popup_ref.OpenMousePos = g.IO.MousePos;
+    popup_ref.OpenPopupPos = NavCalcPreferredRefPos();
+
+    //printf("[%05d] OpenPopupEx(0x%08X)\n", g.FrameCount, id);
+    if (g.OpenPopupStack.Size < current_stack_size + 1)
+    {
+        g.OpenPopupStack.push_back(popup_ref);
+    }
+    else
+    {
+        // Gently handle the user mistakenly calling OpenPopup() every frame. It is a programming mistake! However, if we were to run the regular code path, the ui
+        // would become completely unusable because the popup will always be in hidden-while-calculating-size state _while_ claiming focus. Which would be a very confusing
+        // situation for the programmer. Instead, we silently allow the popup to proceed, it will keep reappearing and the programming error will be more obvious to understand.
+        if (g.OpenPopupStack[current_stack_size].PopupId == id && g.OpenPopupStack[current_stack_size].OpenFrameCount == g.FrameCount - 1)
+        {
+            g.OpenPopupStack[current_stack_size].OpenFrameCount = popup_ref.OpenFrameCount;
+        }
+        else
+        {
+            // Close child popups if any, then flag popup for open/reopen
+            g.OpenPopupStack.resize(current_stack_size + 1);
+            g.OpenPopupStack[current_stack_size] = popup_ref;
+        }
+
+        // When reopening a popup we first refocus its parent, otherwise if its parent is itself a popup it would get closed by ClosePopupsOverWindow().
+        // This is equivalent to what ClosePopupToLevel() does.
+        //if (g.OpenPopupStack[current_stack_size].PopupId == id)
+        //    FocusWindow(parent_window);
+    }
+}
+
+bool ImGui::OpenPopupOnItemClick(const char* str_id, int mouse_button)
+{
+    ImGuiWindow* window = GImGui->CurrentWindow;
+    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+    {
+        ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
+        IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
+        OpenPopupEx(id);
+        return true;
+    }
+    return false;
+}
+
+void ImGui::ClosePopupsOverWindow(ImGuiWindow* ref_window)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.OpenPopupStack.empty())
+        return;
+
+    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
+    // Don't close our own child popup windows.
+    int n = 0;
+    if (ref_window)
+    {
+        for (n = 0; n < g.OpenPopupStack.Size; n++)
+        {
+            ImGuiPopupRef& popup = g.OpenPopupStack[n];
+            if (!popup.Window)
+                continue;
+            IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
+            if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
+                continue;
+
+            // Trim the stack if popups are not direct descendant of the reference window (which is often the NavWindow)
+            bool has_focus = false;
+            for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
+                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
+            if (!has_focus)
+                break;
+        }
+    }
+    if (n < g.OpenPopupStack.Size) // This test is not required but it allows to set a convenient breakpoint on the block below
+        ClosePopupToLevel(n);
+}
+
+void ImGui::ClosePopupToLevel(int remaining)
+{
+    IM_ASSERT(remaining >= 0);
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* focus_window = (remaining > 0) ? g.OpenPopupStack[remaining-1].Window : g.OpenPopupStack[0].ParentWindow;
+    if (g.NavLayer == 0)
+        focus_window = NavRestoreLastChildNavWindow(focus_window);
+    FocusWindow(focus_window);
+    focus_window->DC.NavHideHighlightOneFrame = true;
+    g.OpenPopupStack.resize(remaining);
+}
+
+void ImGui::ClosePopup(ImGuiID id)
+{
+    if (!IsPopupOpen(id))
+        return;
+    ImGuiContext& g = *GImGui;
+    ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+}
+
+// Close the popup we have begin-ed into.
+void ImGui::CloseCurrentPopup()
+{
+    ImGuiContext& g = *GImGui;
+    int popup_idx = g.CurrentPopupStack.Size - 1;
+    if (popup_idx < 0 || popup_idx >= g.OpenPopupStack.Size || g.CurrentPopupStack[popup_idx].PopupId != g.OpenPopupStack[popup_idx].PopupId)
+        return;
+    while (popup_idx > 0 && g.OpenPopupStack[popup_idx].Window && (g.OpenPopupStack[popup_idx].Window->Flags & ImGuiWindowFlags_ChildMenu))
+        popup_idx--;
+    ClosePopupToLevel(popup_idx);
+}
+
+bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (!IsPopupOpen(id))
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+
+    char name[20];
+    if (extra_flags & ImGuiWindowFlags_ChildMenu)
+        ImFormatString(name, IM_ARRAYSIZE(name), "##Menu_%02d", g.CurrentPopupStack.Size);    // Recycle windows based on depth
+    else
+        ImFormatString(name, IM_ARRAYSIZE(name), "##Popup_%08x", id); // Not recycling, so we can close/open during the same frame
+
+    bool is_open = Begin(name, NULL, extra_flags | ImGuiWindowFlags_Popup);
+    if (!is_open) // NB: Begin can return false when the popup is completely clipped (e.g. zero size display)
+        EndPopup();
+
+    return is_open;
+}
+
+bool ImGui::BeginPopup(const char* str_id, ImGuiWindowFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.OpenPopupStack.Size <= g.CurrentPopupStack.Size) // Early out for performance
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+    return BeginPopupEx(g.CurrentWindow->GetID(str_id), flags|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    const ImGuiID id = window->GetID(name);
+    if (!IsPopupOpen(id))
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+
+    // Center modal windows by default
+    // FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
+    if (g.NextWindowData.PosCond == 0)
+        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
+
+    bool is_open = Begin(name, p_open, flags | ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
+    if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
+    {
+        EndPopup();
+        if (is_open)
+            ClosePopup(id);
+        return false;
+    }
+    return is_open;
+}
+
+void ImGui::EndPopup()
+{
+    ImGuiContext& g = *GImGui; (void)g;
+    IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup);  // Mismatched BeginPopup()/EndPopup() calls
+    IM_ASSERT(g.CurrentPopupStack.Size > 0);
+
+    // Make all menus and popups wrap around for now, may need to expose that policy.
+    NavMoveRequestTryWrapping(g.CurrentWindow, ImGuiNavMoveFlags_LoopY);
+
+    End();
+}
+
+// This is a helper to handle the simplest case of associating one named popup to one given widget.
+// You may want to handle this on user side if you have specific needs (e.g. tweaking IsItemHovered() parameters).
+// You can pass a NULL str_id to use the identifier of the last item.
+bool ImGui::BeginPopupContextItem(const char* str_id, int mouse_button)
+{
+    ImGuiWindow* window = GImGui->CurrentWindow;
+    ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
+    IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
+    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+        OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupContextWindow(const char* str_id, int mouse_button, bool also_over_items)
+{
+    if (!str_id)
+        str_id = "window_context";
+    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
+    if (IsMouseReleased(mouse_button) && IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+        if (also_over_items || !IsAnyItemHovered())
+            OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupContextVoid(const char* str_id, int mouse_button)
+{
+    if (!str_id)
+        str_id = "void_context";
+    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
+    if (IsMouseReleased(mouse_button) && !IsWindowHovered(ImGuiHoveredFlags_AnyWindow))
+        OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+ImRect ImGui::GetWindowAllowedExtentRect(ImGuiWindow*)
+{
+    ImVec2 padding = GImGui->Style.DisplaySafeAreaPadding;
+    ImRect r_screen = GetViewportRect();
+    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
+    return r_screen;
+}
+
+// r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
+// r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
+ImVec2 ImGui::FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy)
+{
+    ImVec2 base_pos_clamped = ImClamp(ref_pos, r_outer.Min, r_outer.Max - size);
+    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
+    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
+
+    // Combo Box policy (we want a connecting edge)
+    if (policy == ImGuiPopupPositionPolicy_ComboBox)
+    {
+        const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Down, ImGuiDir_Right, ImGuiDir_Left, ImGuiDir_Up };
+        for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
+        {
+            const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+            if (n != -1 && dir == *last_dir) // Already tried this direction?
+                continue;
+            ImVec2 pos;
+            if (dir == ImGuiDir_Down)  pos = ImVec2(r_avoid.Min.x, r_avoid.Max.y);          // Below, Toward Right (default)
+            if (dir == ImGuiDir_Right) pos = ImVec2(r_avoid.Min.x, r_avoid.Min.y - size.y); // Above, Toward Right
+            if (dir == ImGuiDir_Left)  pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Max.y); // Below, Toward Left
+            if (dir == ImGuiDir_Up)    pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Min.y - size.y); // Above, Toward Left
+            if (!r_outer.Contains(ImRect(pos, pos + size)))
+                continue;
+            *last_dir = dir;
+            return pos;
+        }
+    }
+
+    // Default popup policy
+    const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
+    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
+    {
+        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+        if (n != -1 && dir == *last_dir) // Already tried this direction?
+            continue;
+        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
+        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
+        if (avail_w < size.x || avail_h < size.y)
+            continue;
+        ImVec2 pos;
+        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
+        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
+        *last_dir = dir;
+        return pos;
+    }
+
+    // Fallback, try to keep within display
+    *last_dir = ImGuiDir_None;
+    ImVec2 pos = ref_pos;
+    pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
+    pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
+    return pos;
+}
+
+ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+
+    ImRect r_outer = GetWindowAllowedExtentRect(window);
+    if (window->Flags & ImGuiWindowFlags_ChildMenu)
+    {
+        // Child menus typically request _any_ position within the parent menu item, and then our FindBestWindowPosForPopup() function will move the new menu outside the parent bounds.
+        // This is how we end up with child menus appearing (most-commonly) on the right of the parent menu.
+        IM_ASSERT(g.CurrentWindow == window);
+        ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.Size - 2];
+        float horizontal_overlap = g.Style.ItemSpacing.x;       // We want some overlap to convey the relative depth of each menu (currently the amount of overlap is hard-coded to style.ItemSpacing.x).
+        ImRect r_avoid;
+        if (parent_window->DC.MenuBarAppending)
+            r_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
+        else
+            r_avoid = ImRect(parent_window->Pos.x + horizontal_overlap, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - horizontal_overlap - parent_window->ScrollbarSizes.x, FLT_MAX);
+        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+    }
+    if (window->Flags & ImGuiWindowFlags_Popup)
+    {
+        ImRect r_avoid = ImRect(window->Pos.x - 1, window->Pos.y - 1, window->Pos.x + 1, window->Pos.y + 1);
+        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+    }
+    if (window->Flags & ImGuiWindowFlags_Tooltip)
+    {
+        // Position tooltip (always follows mouse)
+        float sc = g.Style.MouseCursorScale;
+        ImVec2 ref_pos = NavCalcPreferredRefPos();
+        ImRect r_avoid;
+        if (!g.NavDisableHighlight && g.NavDisableMouseHover && !(g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos))
+            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 16, ref_pos.y + 8);
+        else
+            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24 * sc, ref_pos.y + 24 * sc); // FIXME: Hard-coded based on mouse cursor shape expectation. Exact dimension not very important.
+        ImVec2 pos = FindBestWindowPosForPopupEx(ref_pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+        if (window->AutoPosLastDirection == ImGuiDir_None)
+            pos = ref_pos + ImVec2(2, 2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
+        return pos;
+    }
+    IM_ASSERT(0);
+    return window->Pos;
+}
+
+//-----------------------------------------------------------------------------
+// NAVIGATION
+//-----------------------------------------------------------------------------
+
+static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
+{
+    if (ImFabs(dx) > ImFabs(dy))
+        return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
+    return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
+}
+
+static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
+{
+    if (a1 < b0)
+        return a1 - b0;
+    if (b1 < a0)
+        return a0 - b1;
+    return 0.0f;
+}
+
+static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
+{
+    if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
+    {
+        r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
+        r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
+    }
+    else
+    {
+        r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
+        r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
+    }
+}
+
+// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
+static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    if (g.NavLayer != window->DC.NavLayerCurrent)
+        return false;
+
+    const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
+    g.NavScoringCount++;
+
+    // When entering through a NavFlattened border, we consider child window items as fully clipped for scoring
+    if (window->ParentWindow == g.NavWindow)
+    {
+        IM_ASSERT((window->Flags | g.NavWindow->Flags) & ImGuiWindowFlags_NavFlattened);
+        if (!window->ClipRect.Contains(cand))
+            return false;
+        cand.ClipWithFull(window->ClipRect); // This allows the scored item to not overlap other candidates in the parent window
+    }
+
+    // We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
+    // For example, this ensure that items in one column are not reached when moving vertically from items in another column.
+    NavClampRectToVisibleAreaForMoveDir(g.NavMoveClipDir, cand, window->ClipRect);
+
+    // Compute distance between boxes
+    // FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
+    float dbx = NavScoreItemDistInterval(cand.Min.x, cand.Max.x, curr.Min.x, curr.Max.x);
+    float dby = NavScoreItemDistInterval(ImLerp(cand.Min.y, cand.Max.y, 0.2f), ImLerp(cand.Min.y, cand.Max.y, 0.8f), ImLerp(curr.Min.y, curr.Max.y, 0.2f), ImLerp(curr.Min.y, curr.Max.y, 0.8f)); // Scale down on Y to keep using box-distance for vertically touching items
+    if (dby != 0.0f && dbx != 0.0f)
+       dbx = (dbx/1000.0f) + ((dbx > 0.0f) ? +1.0f : -1.0f);
+    float dist_box = ImFabs(dbx) + ImFabs(dby);
+
+    // Compute distance between centers (this is off by a factor of 2, but we only compare center distances with each other so it doesn't matter)
+    float dcx = (cand.Min.x + cand.Max.x) - (curr.Min.x + curr.Max.x);
+    float dcy = (cand.Min.y + cand.Max.y) - (curr.Min.y + curr.Max.y);
+    float dist_center = ImFabs(dcx) + ImFabs(dcy); // L1 metric (need this for our connectedness guarantee)
+
+    // Determine which quadrant of 'curr' our candidate item 'cand' lies in based on distance
+    ImGuiDir quadrant;
+    float dax = 0.0f, day = 0.0f, dist_axial = 0.0f;
+    if (dbx != 0.0f || dby != 0.0f)
+    {
+        // For non-overlapping boxes, use distance between boxes
+        dax = dbx;
+        day = dby;
+        dist_axial = dist_box;
+        quadrant = NavScoreItemGetQuadrant(dbx, dby);
+    }
+    else if (dcx != 0.0f || dcy != 0.0f)
+    {
+        // For overlapping boxes with different centers, use distance between centers
+        dax = dcx;
+        day = dcy;
+        dist_axial = dist_center;
+        quadrant = NavScoreItemGetQuadrant(dcx, dcy);
+    }
+    else
+    {
+        // Degenerate case: two overlapping buttons with same center, break ties arbitrarily (note that LastItemId here is really the _previous_ item order, but it doesn't matter)
+        quadrant = (window->DC.LastItemId < g.NavId) ? ImGuiDir_Left : ImGuiDir_Right;
+    }
+
+#if IMGUI_DEBUG_NAV_SCORING
+    char buf[128];
+    if (ImGui::IsMouseHoveringRect(cand.Min, cand.Max))
+    {
+        ImFormatString(buf, IM_ARRAYSIZE(buf), "dbox (%.2f,%.2f->%.4f)\ndcen (%.2f,%.2f->%.4f)\nd (%.2f,%.2f->%.4f)\nnav %c, quadrant %c", dbx, dby, dist_box, dcx, dcy, dist_center, dax, day, dist_axial, "WENS"[g.NavMoveDir], "WENS"[quadrant]);
+        ImDrawList* draw_list = ImGui::GetOverlayDrawList();
+        draw_list->AddRect(curr.Min, curr.Max, IM_COL32(255,200,0,100));
+        draw_list->AddRect(cand.Min, cand.Max, IM_COL32(255,255,0,200));
+        draw_list->AddRectFilled(cand.Max-ImVec2(4,4), cand.Max+ImGui::CalcTextSize(buf)+ImVec2(4,4), IM_COL32(40,0,0,150));
+        draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Max, ~0U, buf);
+    }
+    else if (g.IO.KeyCtrl) // Hold to preview score in matching quadrant. Press C to rotate.
+    {
+        if (IsKeyPressedMap(ImGuiKey_C)) { g.NavMoveDirLast = (ImGuiDir)((g.NavMoveDirLast + 1) & 3); g.IO.KeysDownDuration[g.IO.KeyMap[ImGuiKey_C]] = 0.01f; }
+        if (quadrant == g.NavMoveDir)
+        {
+            ImFormatString(buf, IM_ARRAYSIZE(buf), "%.0f/%.0f", dist_box, dist_center);
+            ImDrawList* draw_list = ImGui::GetOverlayDrawList();
+            draw_list->AddRectFilled(cand.Min, cand.Max, IM_COL32(255, 0, 0, 200));
+            draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Min, IM_COL32(255, 255, 255, 255), buf);
+        }
+    }
+ #endif
+
+    // Is it in the quadrant we're interesting in moving to?
+    bool new_best = false;
+    if (quadrant == g.NavMoveDir)
+    {
+        // Does it beat the current best candidate?
+        if (dist_box < result->DistBox)
+        {
+            result->DistBox = dist_box;
+            result->DistCenter = dist_center;
+            return true;
+        }
+        if (dist_box == result->DistBox)
+        {
+            // Try using distance between center points to break ties
+            if (dist_center < result->DistCenter)
+            {
+                result->DistCenter = dist_center;
+                new_best = true;
+            }
+            else if (dist_center == result->DistCenter)
+            {
+                // Still tied! we need to be extra-careful to make sure everything gets linked properly. We consistently break ties by symbolically moving "later" items
+                // (with higher index) to the right/downwards by an infinitesimal amount since we the current "best" button already (so it must have a lower index),
+                // this is fairly easy. This rule ensures that all buttons with dx==dy==0 will end up being linked in order of appearance along the x axis.
+                if (((g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down) ? dby : dbx) < 0.0f) // moving bj to the right/down decreases distance
+                    new_best = true;
+            }
+        }
+    }
+
+    // Axial check: if 'curr' has no link at all in some direction and 'cand' lies roughly in that direction, add a tentative link. This will only be kept if no "real" matches
+    // are found, so it only augments the graph produced by the above method using extra links. (important, since it doesn't guarantee strong connectedness)
+    // This is just to avoid buttons having no links in a particular direction when there's a suitable neighbor. you get good graphs without this too.
+    // 2017/09/29: FIXME: This now currently only enabled inside menu bars, ideally we'd disable it everywhere. Menus in particular need to catch failure. For general navigation it feels awkward.
+    // Disabling it may lead to disconnected graphs when nodes are very spaced out on different axis. Perhaps consider offering this as an option?
+    if (result->DistBox == FLT_MAX && dist_axial < result->DistAxial)  // Check axial match
+        if (g.NavLayer == 1 && !(g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
+            if ((g.NavMoveDir == ImGuiDir_Left && dax < 0.0f) || (g.NavMoveDir == ImGuiDir_Right && dax > 0.0f) || (g.NavMoveDir == ImGuiDir_Up && day < 0.0f) || (g.NavMoveDir == ImGuiDir_Down && day > 0.0f))
+            {
+                result->DistAxial = dist_axial;
+                new_best = true;
+            }
+
+    return new_best;
+}
+
+// We get there when either NavId == id, or when g.NavAnyRequest is set (which is updated by NavUpdateAnyRequestFlag above)
+static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    //if (!g.IO.NavActive)  // [2017/10/06] Removed this possibly redundant test but I am not sure of all the side-effects yet. Some of the feature here will need to work regardless of using a _NoNavInputs flag.
+    //    return;
+
+    const ImGuiItemFlags item_flags = window->DC.ItemFlags;
+    const ImRect nav_bb_rel(nav_bb.Min - window->Pos, nav_bb.Max - window->Pos);
+
+    // Process Init Request
+    if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
+    {
+        // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
+        {
+            g.NavInitResultId = id;
+            g.NavInitResultRectRel = nav_bb_rel;
+        }
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
+        {
+            g.NavInitRequest = false; // Found a match, clear request
+            NavUpdateAnyRequestFlag();
+        }
+    }
+
+    // Process Move Request (scoring for navigation)
+    // FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
+    if ((g.NavId != id || (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AllowCurrentNavId)) && !(item_flags & ImGuiItemFlags_NoNav))
+    {
+        ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
+#if IMGUI_DEBUG_NAV_SCORING
+        // [DEBUG] Score all items in NavWindow at all times
+        if (!g.NavMoveRequest)
+            g.NavMoveDir = g.NavMoveDirLast;
+        bool new_best = NavScoreItem(result, nav_bb) && g.NavMoveRequest;
+#else
+        bool new_best = g.NavMoveRequest && NavScoreItem(result, nav_bb);
+#endif
+        if (new_best)
+        {
+            result->ID = id;
+            result->Window = window;
+            result->RectRel = nav_bb_rel;
+        }
+
+        const float VISIBLE_RATIO = 0.70f;
+        if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
+            if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
+                if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
+                {
+                    result = &g.NavMoveResultLocalVisibleSet;
+                    result->ID = id;
+                    result->Window = window;
+                    result->RectRel = nav_bb_rel;
+                }
+    }
+
+    // Update window-relative bounding box of navigated item
+    if (g.NavId == id)
+    {
+        g.NavWindow = window;                                           // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
+        g.NavLayer = window->DC.NavLayerCurrent;
+        g.NavIdIsAlive = true;
+        g.NavIdTabCounter = window->FocusIdxTabCounter;
+        window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel;    // Store item bounding box (relative to window position)
+    }
+}
+
+bool ImGui::NavMoveRequestButNoResultYet()
+{
+    ImGuiContext& g = *GImGui;
+    return g.NavMoveRequest && g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0;
+}
+
+void ImGui::NavMoveRequestCancel()
+{
+    ImGuiContext& g = *GImGui;
+    g.NavMoveRequest = false;
+    NavUpdateAnyRequestFlag();
+}
+
+void ImGui::NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, const ImRect& bb_rel, ImGuiNavMoveFlags move_flags)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_None);
+    ImGui::NavMoveRequestCancel();
+    g.NavMoveDir = move_dir;
+    g.NavMoveClipDir = clip_dir;
+    g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
+    g.NavMoveRequestFlags = move_flags;
+    g.NavWindow->NavRectRel[g.NavLayer] = bb_rel;
+}
+
+void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavWindow != window || !NavMoveRequestButNoResultYet() || g.NavMoveRequestForward != ImGuiNavForward_None || g.NavLayer != 0)
+        return;
+    IM_ASSERT(move_flags != 0); // No points calling this with no wrapping
+    ImRect bb_rel = window->NavRectRel[0];
+
+    ImGuiDir clip_dir = g.NavMoveDir;
+    if (g.NavMoveDir == ImGuiDir_Left && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
+    {
+        bb_rel.Min.x = bb_rel.Max.x = ImMax(window->SizeFull.x, window->SizeContents.x) - window->Scroll.x;
+        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(-bb_rel.GetHeight()); clip_dir = ImGuiDir_Up; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Right && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
+    {
+        bb_rel.Min.x = bb_rel.Max.x = -window->Scroll.x;
+        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(+bb_rel.GetHeight()); clip_dir = ImGuiDir_Down; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Up && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
+    {
+        bb_rel.Min.y = bb_rel.Max.y = ImMax(window->SizeFull.y, window->SizeContents.y) - window->Scroll.y;
+        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(-bb_rel.GetWidth()); clip_dir = ImGuiDir_Left; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Down && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
+    {
+        bb_rel.Min.y = bb_rel.Max.y = -window->Scroll.y;
+        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(+bb_rel.GetWidth()); clip_dir = ImGuiDir_Right; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+}
+
+static void ImGui::NavSaveLastChildNavWindow(ImGuiWindow* nav_window)
+{
+    ImGuiWindow* parent_window = nav_window;
+    while (parent_window && (parent_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (parent_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
+        parent_window = parent_window->ParentWindow;
+    if (parent_window && parent_window != nav_window)
+        parent_window->NavLastChildNavWindow = nav_window;
+}
+
+// Call when we are expected to land on Layer 0 after FocusWindow()
+static ImGuiWindow* ImGui::NavRestoreLastChildNavWindow(ImGuiWindow* window)
+{
+    return window->NavLastChildNavWindow ? window->NavLastChildNavWindow : window;
+}
+
+static void NavRestoreLayer(int layer)
+{
+    ImGuiContext& g = *GImGui;
+    g.NavLayer = layer;
+    if (layer == 0)
+        g.NavWindow = ImGui::NavRestoreLastChildNavWindow(g.NavWindow);
+    if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
+        ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
+    else
+        ImGui::NavInitWindow(g.NavWindow, true);
+}
+
+static inline void ImGui::NavUpdateAnyRequestFlag()
+{
+    ImGuiContext& g = *GImGui;
+    g.NavAnyRequest = g.NavMoveRequest || g.NavInitRequest || (IMGUI_DEBUG_NAV_SCORING && g.NavWindow != NULL);
+    if (g.NavAnyRequest)
+        IM_ASSERT(g.NavWindow != NULL);
+}
+
+// This needs to be called before we submit any widget (aka in or before Begin)
+void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(window == g.NavWindow);
+    bool init_for_nav = false;
+    if (!(window->Flags & ImGuiWindowFlags_NoNavInputs))
+        if (!(window->Flags & ImGuiWindowFlags_ChildWindow) || (window->Flags & ImGuiWindowFlags_Popup) || (window->NavLastIds[0] == 0) || force_reinit)
+            init_for_nav = true;
+    if (init_for_nav)
+    {
+        SetNavID(0, g.NavLayer);
+        g.NavInitRequest = true;
+        g.NavInitRequestFromMove = false;
+        g.NavInitResultId = 0;
+        g.NavInitResultRectRel = ImRect();
+        NavUpdateAnyRequestFlag();
+    }
+    else
+    {
+        g.NavId = window->NavLastIds[0];
+    }
+}
+
+static ImVec2 ImGui::NavCalcPreferredRefPos()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow)
+        return ImFloor(g.IO.MousePos);
+
+    // When navigation is active and mouse is disabled, decide on an arbitrary position around the bottom left of the currently navigated item
+    const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
+    ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x*4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
+    ImRect visible_rect = GetViewportRect();
+    return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
+}
+
+float ImGui::GetNavInputAmount(ImGuiNavInput n, ImGuiInputReadMode mode)
+{
+    ImGuiContext& g = *GImGui;
+    if (mode == ImGuiInputReadMode_Down)
+        return g.IO.NavInputs[n];                         // Instant, read analog input (0.0f..1.0f, as provided by user)
+
+    const float t = g.IO.NavInputsDownDuration[n];
+    if (t < 0.0f && mode == ImGuiInputReadMode_Released)  // Return 1.0f when just released, no repeat, ignore analog input.
+        return (g.IO.NavInputsDownDurationPrev[n] >= 0.0f ? 1.0f : 0.0f);
+    if (t < 0.0f)
+        return 0.0f;
+    if (mode == ImGuiInputReadMode_Pressed)               // Return 1.0f when just pressed, no repeat, ignore analog input.
+        return (t == 0.0f) ? 1.0f : 0.0f;
+    if (mode == ImGuiInputReadMode_Repeat)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
+    if (mode == ImGuiInputReadMode_RepeatSlow)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 1.00f, g.IO.KeyRepeatRate * 2.00f);
+    if (mode == ImGuiInputReadMode_RepeatFast)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.30f);
+    return 0.0f;
+}
+
+ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor, float fast_factor)
+{
+    ImVec2 delta(0.0f, 0.0f);
+    if (dir_sources & ImGuiNavDirSourceFlags_Keyboard)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_KeyRight_, mode)   - GetNavInputAmount(ImGuiNavInput_KeyLeft_,   mode), GetNavInputAmount(ImGuiNavInput_KeyDown_,   mode) - GetNavInputAmount(ImGuiNavInput_KeyUp_,   mode));
+    if (dir_sources & ImGuiNavDirSourceFlags_PadDPad)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_DpadRight, mode)   - GetNavInputAmount(ImGuiNavInput_DpadLeft,   mode), GetNavInputAmount(ImGuiNavInput_DpadDown,   mode) - GetNavInputAmount(ImGuiNavInput_DpadUp,   mode));
+    if (dir_sources & ImGuiNavDirSourceFlags_PadLStick)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_LStickRight, mode) - GetNavInputAmount(ImGuiNavInput_LStickLeft, mode), GetNavInputAmount(ImGuiNavInput_LStickDown, mode) - GetNavInputAmount(ImGuiNavInput_LStickUp, mode));
+    if (slow_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakSlow))
+        delta *= slow_factor;
+    if (fast_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakFast))
+        delta *= fast_factor;
+    return delta;
+}
+
+// Scroll to keep newly navigated item fully into view
+// NB: We modify rect_rel by the amount we scrolled for, so it is immediately updated.
+static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item_rect)
+{
+    ImRect window_rect(window->InnerMainRect.Min - ImVec2(1, 1), window->InnerMainRect.Max + ImVec2(1, 1));
+    //g.OverlayDrawList.AddRect(window_rect.Min, window_rect.Max, IM_COL32_WHITE); // [DEBUG]
+    if (window_rect.Contains(item_rect))
+        return;
+
+    ImGuiContext& g = *GImGui;
+    if (window->ScrollbarX && item_rect.Min.x < window_rect.Min.x)
+    {
+        window->ScrollTarget.x = item_rect.Min.x - window->Pos.x + window->Scroll.x - g.Style.ItemSpacing.x;
+        window->ScrollTargetCenterRatio.x = 0.0f;
+    }
+    else if (window->ScrollbarX && item_rect.Max.x >= window_rect.Max.x)
+    {
+        window->ScrollTarget.x = item_rect.Max.x - window->Pos.x + window->Scroll.x + g.Style.ItemSpacing.x;
+        window->ScrollTargetCenterRatio.x = 1.0f;
+    }
+    if (item_rect.Min.y < window_rect.Min.y)
+    {
+        window->ScrollTarget.y = item_rect.Min.y - window->Pos.y + window->Scroll.y - g.Style.ItemSpacing.y;
+        window->ScrollTargetCenterRatio.y = 0.0f;
+    }
+    else if (item_rect.Max.y >= window_rect.Max.y)
+    {
+        window->ScrollTarget.y = item_rect.Max.y - window->Pos.y + window->Scroll.y + g.Style.ItemSpacing.y;
+        window->ScrollTargetCenterRatio.y = 1.0f;
+    }
+}
+
+static void ImGui::NavUpdate()
+{
+    ImGuiContext& g = *GImGui;
+    g.IO.WantSetMousePos = false;
+#if 0
+    if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
+#endif
+
+    // Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
+    bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
+    bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
+    if (nav_gamepad_active)
+        if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
+            g.NavInputSource = ImGuiInputSource_NavGamepad;
+
+    // Update Keyboard->Nav inputs mapping
+    if (nav_keyboard_active)
+    {
+        #define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
+        NAV_MAP_KEY(ImGuiKey_Space,     ImGuiNavInput_Activate );
+        NAV_MAP_KEY(ImGuiKey_Enter,     ImGuiNavInput_Input    );
+        NAV_MAP_KEY(ImGuiKey_Escape,    ImGuiNavInput_Cancel   );
+        NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
+        NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
+        NAV_MAP_KEY(ImGuiKey_UpArrow,   ImGuiNavInput_KeyUp_   );
+        NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
+        if (g.IO.KeyCtrl)   g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
+        if (g.IO.KeyShift)  g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
+        if (g.IO.KeyAlt)    g.IO.NavInputs[ImGuiNavInput_KeyMenu_]  = 1.0f;
+        #undef NAV_MAP_KEY
+    }
+    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
+    for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
+        g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
+
+    // Process navigation init request (select first/default focus)
+    if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
+    {
+        // Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
+        IM_ASSERT(g.NavWindow);
+        if (g.NavInitRequestFromMove)
+            SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
+        else
+            SetNavID(g.NavInitResultId, g.NavLayer);
+        g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
+    }
+    g.NavInitRequest = false;
+    g.NavInitRequestFromMove = false;
+    g.NavInitResultId = 0;
+    g.NavJustMovedToId = 0;
+
+    // Process navigation move request
+    if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
+        NavUpdateMoveResult();
+
+    // When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
+    if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
+    {
+        IM_ASSERT(g.NavMoveRequest);
+        if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
+            g.NavDisableHighlight = false;
+        g.NavMoveRequestForward = ImGuiNavForward_None;
+    }
+
+    // Apply application mouse position movement, after we had a chance to process move request result.
+    if (g.NavMousePosDirty && g.NavIdIsAlive)
+    {
+        // Set mouse position given our knowledge of the navigated item position from last frame
+        if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
+        {
+            if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
+            {
+                g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
+                g.IO.WantSetMousePos = true;
+            }
+        }
+        g.NavMousePosDirty = false;
+    }
+    g.NavIdIsAlive = false;
+    g.NavJustTabbedId = 0;
+    IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
+
+    // Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
+    if (g.NavWindow)
+        NavSaveLastChildNavWindow(g.NavWindow);
+    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
+        g.NavWindow->NavLastChildNavWindow = NULL;
+
+    // Update CTRL+TAB and Windowing features (hold Square to move/resize/etc.)
+    NavUpdateWindowing();
+
+    // Set output flags for user application
+    g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
+    g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
+
+    // Process NavCancel input (to close a popup, get back to parent, clear focus)
+    if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
+    {
+        if (g.ActiveId != 0)
+        {
+            ClearActiveID();
+        }
+        else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
+        {
+            // Exit child window
+            ImGuiWindow* child_window = g.NavWindow;
+            ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
+            IM_ASSERT(child_window->ChildId != 0);
+            FocusWindow(parent_window);
+            SetNavID(child_window->ChildId, 0);
+            g.NavIdIsAlive = false;
+            if (g.NavDisableMouseHover)
+                g.NavMousePosDirty = true;
+        }
+        else if (g.OpenPopupStack.Size > 0)
+        {
+            // Close open popup/menu
+            if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
+                ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+        }
+        else if (g.NavLayer != 0)
+        {
+            // Leave the "menu" layer
+            NavRestoreLayer(0);
+        }
+        else
+        {
+            // Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
+            if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
+                g.NavWindow->NavLastIds[0] = 0;
+            g.NavId = 0;
+        }
+    }
+
+    // Process manual activation request
+    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
+    if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+    {
+        bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
+        bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
+        if (g.ActiveId == 0 && activate_pressed)
+            g.NavActivateId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
+            g.NavActivateDownId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
+            g.NavActivatePressedId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
+            g.NavInputId = g.NavId;
+    }
+    if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+        g.NavDisableHighlight = true;
+    if (g.NavActivateId != 0)
+        IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
+    g.NavMoveRequest = false;
+
+    // Process programmatic activation request
+    if (g.NavNextActivateId != 0)
+        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
+    g.NavNextActivateId = 0;
+
+    // Initiate directional inputs request
+    const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
+    if (g.NavMoveRequestForward == ImGuiNavForward_None)
+    {
+        g.NavMoveDir = ImGuiDir_None;
+        g.NavMoveRequestFlags = 0;
+        if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+        {
+            if ((allowed_dir_flags & (1<<ImGuiDir_Left))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Up))    && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp,   ImGuiNavInput_KeyUp_,   ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Down))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
+        }
+        g.NavMoveClipDir = g.NavMoveDir;
+    }
+    else
+    {
+        // Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
+        // (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
+        IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
+        IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
+        g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
+    }
+
+    // Update PageUp/PageDown scroll
+    float nav_scoring_rect_offset_y = 0.0f;
+    if (nav_keyboard_active)
+        nav_scoring_rect_offset_y = NavUpdatePageUpPageDown(allowed_dir_flags);
+
+    // If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
+    if (g.NavMoveDir != ImGuiDir_None)
+    {
+        g.NavMoveRequest = true;
+        g.NavMoveDirLast = g.NavMoveDir;
+    }
+    if (g.NavMoveRequest && g.NavId == 0)
+    {
+        g.NavInitRequest = g.NavInitRequestFromMove = true;
+        g.NavInitResultId = 0;
+        g.NavDisableHighlight = false;
+    }
+    NavUpdateAnyRequestFlag();
+
+    // Scrolling
+    if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
+    {
+        // *Fallback* manual-scroll with Nav directional keys when window has no navigable item
+        ImGuiWindow* window = g.NavWindow;
+        const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
+        if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
+        {
+            if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
+                SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
+            if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
+                SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
+        }
+
+        // *Normal* Manual scroll with NavScrollXXX keys
+        // Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
+        ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
+        if (scroll_dir.x != 0.0f && window->ScrollbarX)
+        {
+            SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
+            g.NavMoveFromClampedRefRect = true;
+        }
+        if (scroll_dir.y != 0.0f)
+        {
+            SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
+            g.NavMoveFromClampedRefRect = true;
+        }
+    }
+
+    // Reset search results
+    g.NavMoveResultLocal.Clear();
+    g.NavMoveResultLocalVisibleSet.Clear();
+    g.NavMoveResultOther.Clear();
+
+    // When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
+    if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
+    {
+        ImGuiWindow* window = g.NavWindow;
+        ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
+        if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
+        {
+            float pad = window->CalcFontSize() * 0.5f;
+            window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
+            window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
+            g.NavId = 0;
+        }
+        g.NavMoveFromClampedRefRect = false;
+    }
+
+    // For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
+    ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
+    g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
+    g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
+    g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
+    g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
+    IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
+    //g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
+    g.NavScoringCount = 0;
+#if IMGUI_DEBUG_NAV_RECTS
+    if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
+    if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
+#endif
+}
+
+static void ImGui::NavUpdateMoveResult()
+{
+    // Select which result to use
+    ImGuiContext& g = *GImGui;
+    ImGuiNavMoveResult* result = (g.NavMoveResultLocal.ID != 0) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
+
+    // PageUp/PageDown behavior first jumps to the bottom/top mostly visible item, _otherwise_ use the result from the previous/next page.
+    if (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet)
+        if (g.NavMoveResultLocalVisibleSet.ID != 0 && g.NavMoveResultLocalVisibleSet.ID != g.NavId)
+            result = &g.NavMoveResultLocalVisibleSet;
+
+    // Maybe entering a flattened child from the outside? In this case solve the tie using the regular scoring rules.
+    if (result != &g.NavMoveResultOther && g.NavMoveResultOther.ID != 0 && g.NavMoveResultOther.Window->ParentWindow == g.NavWindow)
+        if ((g.NavMoveResultOther.DistBox < result->DistBox) || (g.NavMoveResultOther.DistBox == result->DistBox && g.NavMoveResultOther.DistCenter < result->DistCenter))
+            result = &g.NavMoveResultOther;
+    IM_ASSERT(g.NavWindow && result->Window);
+
+    // Scroll to keep newly navigated item fully into view.
+    if (g.NavLayer == 0)
+    {
+        ImRect rect_abs = ImRect(result->RectRel.Min + result->Window->Pos, result->RectRel.Max + result->Window->Pos);
+        NavScrollToBringItemIntoView(result->Window, rect_abs);
+
+        // Estimate upcoming scroll so we can offset our result position so mouse position can be applied immediately after in NavUpdate()
+        ImVec2 next_scroll = CalcNextScrollFromScrollTargetAndClamp(result->Window, false);
+        ImVec2 delta_scroll = result->Window->Scroll - next_scroll;
+        result->RectRel.Translate(delta_scroll);
+
+        // Also scroll parent window to keep us into view if necessary (we could/should technically recurse back the whole the parent hierarchy).
+        if (result->Window->Flags & ImGuiWindowFlags_ChildWindow)
+            NavScrollToBringItemIntoView(result->Window->ParentWindow, ImRect(rect_abs.Min + delta_scroll, rect_abs.Max + delta_scroll));
+    }
+
+    // Apply result from previous frame navigation directional move request
+    ClearActiveID();
+    g.NavWindow = result->Window;
+    SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
+    g.NavJustMovedToId = result->ID;
+    g.NavMoveFromClampedRefRect = false;
+}
+
+static float ImGui::NavUpdatePageUpPageDown(int allowed_dir_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavMoveDir == ImGuiDir_None && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget && g.NavLayer == 0)
+    {
+        ImGuiWindow* window = g.NavWindow;
+        bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && (allowed_dir_flags & (1 << ImGuiDir_Up));
+        bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && (allowed_dir_flags & (1 << ImGuiDir_Down));
+        if ((page_up_held && !page_down_held) || (page_down_held && !page_up_held))
+        {
+            if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
+            {
+                // Fallback manual-scroll when window has no navigable item
+                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
+                    SetWindowScrollY(window, window->Scroll.y - window->InnerClipRect.GetHeight());
+                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
+                    SetWindowScrollY(window, window->Scroll.y + window->InnerClipRect.GetHeight());
+            }
+            else
+            {
+                const ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
+                const float page_offset_y = ImMax(0.0f, window->InnerClipRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
+                float nav_scoring_rect_offset_y = 0.0f;
+                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
+                {
+                    nav_scoring_rect_offset_y = -page_offset_y;
+                    g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
+                    g.NavMoveClipDir = ImGuiDir_Up;
+                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
+                }
+                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
+                {
+                    nav_scoring_rect_offset_y = +page_offset_y;
+                    g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
+                    g.NavMoveClipDir = ImGuiDir_Down;
+                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
+                }
+                return nav_scoring_rect_offset_y;
+            }
+        }
+    }
+    return 0.0f;
+}
+
+static int FindWindowIndex(ImGuiWindow* window) // FIXME-OPT O(N)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = g.Windows.Size-1; i >= 0; i--)
+        if (g.Windows[i] == window)
+            return i;
+    return -1;
+}
+
+static ImGuiWindow* FindWindowNavFocusable(int i_start, int i_stop, int dir) // FIXME-OPT O(N)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = i_start; i >= 0 && i < g.Windows.Size && i != i_stop; i += dir)
+        if (ImGui::IsWindowNavFocusable(g.Windows[i]))
+            return g.Windows[i];
+    return NULL;
+}
+
+static void NavUpdateWindowingHighlightWindow(int focus_change_dir)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavWindowingTarget);
+    if (g.NavWindowingTarget->Flags & ImGuiWindowFlags_Modal)
+        return;
+
+    const int i_current = FindWindowIndex(g.NavWindowingTarget);
+    ImGuiWindow* window_target = FindWindowNavFocusable(i_current + focus_change_dir, -INT_MAX, focus_change_dir);
+    if (!window_target)
+        window_target = FindWindowNavFocusable((focus_change_dir < 0) ? (g.Windows.Size - 1) : 0, i_current, focus_change_dir);
+    if (window_target) // Don't reset windowing target if there's a single window in the list
+        g.NavWindowingTarget = g.NavWindowingTargetAnim = window_target;
+    g.NavWindowingToggleLayer = false;
+}
+
+// Window management mode (hold to: change focus/move/resize, tap to: toggle menu layer)
+static void ImGui::NavUpdateWindowing()
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* apply_focus_window = NULL;
+    bool apply_toggle_layer = false;
+
+    ImGuiWindow* modal_window = GetFrontMostPopupModal();
+    if (modal_window != NULL)
+    {
+        g.NavWindowingTarget = NULL;
+        return;
+    }
+
+    // Fade out
+    if (g.NavWindowingTargetAnim && g.NavWindowingTarget == NULL)
+    {
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha - g.IO.DeltaTime * 10.0f, 0.0f);
+        if (g.DimBgRatio <= 0.0f && g.NavWindowingHighlightAlpha <= 0.0f)
+            g.NavWindowingTargetAnim = NULL;
+    }
+
+    // Start CTRL-TAB or Square+L/R window selection
+    bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
+    bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
+    if (start_windowing_with_gamepad || start_windowing_with_keyboard)
+        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.Windows.Size - 1, -INT_MAX, -1))
+        {
+            g.NavWindowingTarget = g.NavWindowingTargetAnim = window;
+            g.NavWindowingTimer = g.NavWindowingHighlightAlpha = 0.0f;
+            g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
+            g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
+        }
+
+    // Gamepad update
+    g.NavWindowingTimer += g.IO.DeltaTime;
+    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavGamepad)
+    {
+        // Highlight only appears after a brief time holding the button, so that a fast tap on PadMenu (to toggle NavLayer) doesn't add visual noise
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f));
+
+        // Select window to focus
+        const int focus_change_dir = (int)IsNavInputPressed(ImGuiNavInput_FocusPrev, ImGuiInputReadMode_RepeatSlow) - (int)IsNavInputPressed(ImGuiNavInput_FocusNext, ImGuiInputReadMode_RepeatSlow);
+        if (focus_change_dir != 0)
+        {
+            NavUpdateWindowingHighlightWindow(focus_change_dir);
+            g.NavWindowingHighlightAlpha = 1.0f;
+        }
+
+        // Single press toggles NavLayer, long press with L/R apply actual focus on release (until then the window was merely rendered front-most)
+        if (!IsNavInputDown(ImGuiNavInput_Menu))
+        {
+            g.NavWindowingToggleLayer &= (g.NavWindowingHighlightAlpha < 1.0f); // Once button was held long enough we don't consider it a tap-to-toggle-layer press anymore.
+            if (g.NavWindowingToggleLayer && g.NavWindow)
+                apply_toggle_layer = true;
+            else if (!g.NavWindowingToggleLayer)
+                apply_focus_window = g.NavWindowingTarget;
+            g.NavWindowingTarget = NULL;
+        }
+    }
+
+    // Keyboard: Focus
+    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavKeyboard)
+    {
+        // Visuals only appears after a brief time after pressing TAB the first time, so that a fast CTRL+TAB doesn't add visual noise
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f)); // 1.0f
+        if (IsKeyPressedMap(ImGuiKey_Tab, true))
+            NavUpdateWindowingHighlightWindow(g.IO.KeyShift ? +1 : -1);
+        if (!g.IO.KeyCtrl)
+            apply_focus_window = g.NavWindowingTarget;
+    }
+
+    // Keyboard: Press and Release ALT to toggle menu layer
+    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
+    if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && IsNavInputPressed(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))
+        if (IsMousePosValid(&g.IO.MousePos) == IsMousePosValid(&g.IO.MousePosPrev))
+            apply_toggle_layer = true;
+
+    // Move window
+    if (g.NavWindowingTarget && !(g.NavWindowingTarget->Flags & ImGuiWindowFlags_NoMove))
+    {
+        ImVec2 move_delta;
+        if (g.NavInputSource == ImGuiInputSource_NavKeyboard && !g.IO.KeyShift)
+            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard, ImGuiInputReadMode_Down);
+        if (g.NavInputSource == ImGuiInputSource_NavGamepad)
+            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down);
+        if (move_delta.x != 0.0f || move_delta.y != 0.0f)
+        {
+            const float NAV_MOVE_SPEED = 800.0f;
+            const float move_speed = ImFloor(NAV_MOVE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); // FIXME: Doesn't code variable framerate very well
+            g.NavWindowingTarget->RootWindow->Pos += move_delta * move_speed;
+            g.NavDisableMouseHover = true;
+            MarkIniSettingsDirty(g.NavWindowingTarget);
+        }
+    }
+
+    // Apply final focus
+    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
+    {
+        g.NavDisableHighlight = false;
+        g.NavDisableMouseHover = true;
+        apply_focus_window = NavRestoreLastChildNavWindow(apply_focus_window);
+        ClosePopupsOverWindow(apply_focus_window);
+        FocusWindow(apply_focus_window);
+        if (apply_focus_window->NavLastIds[0] == 0)
+            NavInitWindow(apply_focus_window, false);
+
+        // If the window only has a menu layer, select it directly
+        if (apply_focus_window->DC.NavLayerActiveMask == (1 << 1))
+            g.NavLayer = 1;
+    }
+    if (apply_focus_window)
+        g.NavWindowingTarget = NULL;
+
+    // Apply menu/layer toggle
+    if (apply_toggle_layer && g.NavWindow)
+    {
+        // Move to parent menu if necessary
+        ImGuiWindow* new_nav_window = g.NavWindow;
+        while ((new_nav_window->DC.NavLayerActiveMask & (1 << 1)) == 0 && (new_nav_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (new_nav_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
+            new_nav_window = new_nav_window->ParentWindow;
+        if (new_nav_window != g.NavWindow)
+        {
+            ImGuiWindow* old_nav_window = g.NavWindow;
+            FocusWindow(new_nav_window);
+            new_nav_window->NavLastChildNavWindow = old_nav_window;
+        }
+        g.NavDisableHighlight = false;
+        g.NavDisableMouseHover = true;
+        NavRestoreLayer((g.NavWindow->DC.NavLayerActiveMask & (1 << 1)) ? (g.NavLayer ^ 1) : 0);
+    }
+}
+
+// Window has already passed the IsWindowNavFocusable()
+static const char* GetFallbackWindowNameForWindowingList(ImGuiWindow* window)
+{
+    if (window->Flags & ImGuiWindowFlags_Popup)
+        return "(Popup)";
+    if ((window->Flags & ImGuiWindowFlags_MenuBar) && strcmp(window->Name, "##MainMenuBar") == 0)
+        return "(Main menu bar)";
+    return "(Untitled)";
+}
+
+// Overlay displayed when using CTRL+TAB. Called by EndFrame().
+void ImGui::NavUpdateWindowingList()
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavWindowingTarget != NULL);
+
+    if (g.NavWindowingTimer < NAV_WINDOWING_LIST_APPEAR_DELAY)
+        return;
+
+    if (g.NavWindowingList == NULL)
+        g.NavWindowingList = FindWindowByName("###NavWindowingList");
+    SetNextWindowSizeConstraints(ImVec2(g.IO.DisplaySize.x * 0.20f, g.IO.DisplaySize.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
+    SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
+    PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
+    Begin("###NavWindowingList", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings);
+    for (int n = g.Windows.Size - 1; n >= 0; n--)
+    {
+        ImGuiWindow* window = g.Windows[n];
+        if (!IsWindowNavFocusable(window))
+            continue;
+        const char* label = window->Name;
+        if (label == FindRenderedTextEnd(label))
+            label = GetFallbackWindowNameForWindowingList(window);
+        Selectable(label, g.NavWindowingTarget == window);
+    }
+    End();
+    PopStyleVar();
+}
+
+//-----------------------------------------------------------------------------
+// COLUMNS
+//-----------------------------------------------------------------------------
+
 void ImGui::NextColumn()
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -13627,94 +8103,6 @@
         BeginColumns(id, columns_count, flags);
 }
 
-void ImGui::Indent(float indent_w)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    window->DC.Indent.x += (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
-    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
-}
-
-void ImGui::Unindent(float indent_w)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    window->DC.Indent.x -= (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
-    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
-}
-
-void ImGui::TreePush(const char* str_id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    PushID(str_id ? str_id : "#TreePush");
-}
-
-void ImGui::TreePush(const void* ptr_id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    PushID(ptr_id ? ptr_id : (const void*)"#TreePush");
-}
-
-void ImGui::TreePushRawID(ImGuiID id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    window->IDStack.push_back(id);
-}
-
-void ImGui::TreePop()
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    Unindent();
-
-    window->DC.TreeDepth--;
-    if (g.NavMoveDir == ImGuiDir_Left && g.NavWindow == window && NavMoveRequestButNoResultYet())
-        if (g.NavIdIsAlive && (window->DC.TreeDepthMayJumpToParentOnPop & (1 << window->DC.TreeDepth)))
-        {
-            SetNavID(window->IDStack.back(), g.NavLayer);
-            NavMoveRequestCancel();
-        }
-    window->DC.TreeDepthMayJumpToParentOnPop &= (1 << window->DC.TreeDepth) - 1;
-
-    IM_ASSERT(window->IDStack.Size > 1); // There should always be 1 element in the IDStack (pushed during window creation). If this triggers you called TreePop/PopID too much.
-    PopID();
-}
-
-void ImGui::Value(const char* prefix, bool b)
-{
-    Text("%s: %s", prefix, (b ? "true" : "false"));
-}
-
-void ImGui::Value(const char* prefix, int v)
-{
-    Text("%s: %d", prefix, v);
-}
-
-void ImGui::Value(const char* prefix, unsigned int v)
-{
-    Text("%s: %d", prefix, v);
-}
-
-void ImGui::Value(const char* prefix, float v, const char* float_format)
-{
-    if (float_format)
-    {
-        char fmt[64];
-        ImFormatString(fmt, IM_ARRAYSIZE(fmt), "%%s: %s", float_format);
-        Text(fmt, prefix, v);
-    }
-    else
-    {
-        Text("%s: %.3f", prefix, v);
-    }
-}
-
 //-----------------------------------------------------------------------------
 // DRAG AND DROP
 //-----------------------------------------------------------------------------
@@ -14003,6 +8391,397 @@
 }
 
 //-----------------------------------------------------------------------------
+// LOGGING
+//-----------------------------------------------------------------------------
+
+// Pass text data straight to log (without being displayed)
+void ImGui::LogText(const char* fmt, ...)
+{
+    ImGuiContext& g = *GImGui;
+    if (!g.LogEnabled)
+        return;
+
+    va_list args;
+    va_start(args, fmt);
+    if (g.LogFile)
+        vfprintf(g.LogFile, fmt, args);
+    else
+        g.LogClipboard.appendfv(fmt, args);
+    va_end(args);
+}
+
+// Internal version that takes a position to decide on newline placement and pad items according to their depth.
+// We split text into individual lines to add current tree level padding
+void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    if (!text_end)
+        text_end = FindRenderedTextEnd(text, text_end);
+
+    const bool log_new_line = ref_pos && (ref_pos->y > window->DC.LogLinePosY + 1);
+    if (ref_pos)
+        window->DC.LogLinePosY = ref_pos->y;
+
+    const char* text_remaining = text;
+    if (g.LogStartDepth > window->DC.TreeDepth)  // Re-adjust padding if we have popped out of our starting depth
+        g.LogStartDepth = window->DC.TreeDepth;
+    const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth);
+    for (;;)
+    {
+        // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry.
+        const char* line_end = text_remaining;
+        while (line_end < text_end)
+            if (*line_end == '\n')
+                break;
+            else
+                line_end++;
+        if (line_end >= text_end)
+            line_end = NULL;
+
+        const bool is_first_line = (text == text_remaining);
+        bool is_last_line = false;
+        if (line_end == NULL)
+        {
+            is_last_line = true;
+            line_end = text_end;
+        }
+        if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
+        {
+            const int char_count = (int)(line_end - text_remaining);
+            if (log_new_line || !is_first_line)
+                LogText(IM_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining);
+            else
+                LogText(" %.*s", char_count, text_remaining);
+        }
+
+        if (is_last_line)
+            break;
+        text_remaining = line_end + 1;
+    }
+}
+
+// Start logging ImGui output to TTY
+void ImGui::LogToTTY(int max_depth)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = stdout;
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+// Start logging ImGui output to given file
+void ImGui::LogToFile(int max_depth, const char* filename)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    if (!filename)
+    {
+        filename = g.IO.LogFilename;
+        if (!filename)
+            return;
+    }
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = ImFileOpen(filename, "ab");
+    if (!g.LogFile)
+    {
+        IM_ASSERT(g.LogFile != NULL); // Consider this an error
+        return;
+    }
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+// Start logging ImGui output to clipboard
+void ImGui::LogToClipboard(int max_depth)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = NULL;
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+void ImGui::LogFinish()
+{
+    ImGuiContext& g = *GImGui;
+    if (!g.LogEnabled)
+        return;
+
+    LogText(IM_NEWLINE);
+    if (g.LogFile != NULL)
+    {
+        if (g.LogFile == stdout)
+            fflush(g.LogFile);
+        else
+            fclose(g.LogFile);
+        g.LogFile = NULL;
+    }
+    if (g.LogClipboard.size() > 1)
+    {
+        SetClipboardText(g.LogClipboard.begin());
+        g.LogClipboard.clear();
+    }
+    g.LogEnabled = false;
+}
+
+// Helper to display logging buttons
+void ImGui::LogButtons()
+{
+    ImGuiContext& g = *GImGui;
+
+    PushID("LogButtons");
+    const bool log_to_tty = Button("Log To TTY"); SameLine();
+    const bool log_to_file = Button("Log To File"); SameLine();
+    const bool log_to_clipboard = Button("Log To Clipboard"); SameLine();
+    PushItemWidth(80.0f);
+    PushAllowKeyboardFocus(false);
+    SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL);
+    PopAllowKeyboardFocus();
+    PopItemWidth();
+    PopID();
+
+    // Start logging at the end of the function so that the buttons don't appear in the log
+    if (log_to_tty)
+        LogToTTY(g.LogAutoExpandMaxDepth);
+    if (log_to_file)
+        LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename);
+    if (log_to_clipboard)
+        LogToClipboard(g.LogAutoExpandMaxDepth);
+}
+
+//-----------------------------------------------------------------------------
+// SETTINGS
+//-----------------------------------------------------------------------------
+
+void ImGui::MarkIniSettingsDirty()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.SettingsDirtyTimer <= 0.0f)
+        g.SettingsDirtyTimer = g.IO.IniSavingRate;
+}
+
+void ImGui::MarkIniSettingsDirty(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+    if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings))
+        if (g.SettingsDirtyTimer <= 0.0f)
+            g.SettingsDirtyTimer = g.IO.IniSavingRate;
+}
+
+static ImGuiWindowSettings* CreateNewWindowSettings(const char* name)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsWindows.push_back(ImGuiWindowSettings());
+    ImGuiWindowSettings* settings = &g.SettingsWindows.back();
+    settings->Name = ImStrdup(name);
+    settings->ID = ImHash(name, 0);
+    return settings;
+}
+
+ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = 0; i != g.SettingsWindows.Size; i++)
+        if (g.SettingsWindows[i].ID == id)
+            return &g.SettingsWindows[i];
+    return NULL;
+}
+
+void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
+{
+    size_t file_data_size = 0;
+    char* file_data = (char*)ImFileLoadToMemory(ini_filename, "rb", &file_data_size);
+    if (!file_data)
+        return;
+    LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
+    ImGui::MemFree(file_data);
+}
+
+ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
+{
+    ImGuiContext& g = *GImGui;
+    const ImGuiID type_hash = ImHash(type_name, 0, 0);
+    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
+        if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
+            return &g.SettingsHandlers[handler_n];
+    return NULL;
+}
+
+// Zero-tolerance, no error reporting, cheap .ini parsing
+void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.Initialized);
+    IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
+
+    // For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
+    // For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
+    if (ini_size == 0)
+        ini_size = strlen(ini_data);
+    char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
+    char* buf_end = buf + ini_size;
+    memcpy(buf, ini_data, ini_size);
+    buf[ini_size] = 0;
+
+    void* entry_data = NULL;
+    ImGuiSettingsHandler* entry_handler = NULL;
+
+    char* line_end = NULL;
+    for (char* line = buf; line < buf_end; line = line_end + 1)
+    {
+        // Skip new lines markers, then find end of the line
+        while (*line == '\n' || *line == '\r')
+            line++;
+        line_end = line;
+        while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
+            line_end++;
+        line_end[0] = 0;
+
+        if (line[0] == '[' && line_end > line && line_end[-1] == ']')
+        {
+            // Parse "[Type][Name]". Note that 'Name' can itself contains [] characters, which is acceptable with the current format and parsing code.
+            line_end[-1] = 0;
+            const char* name_end = line_end - 1;
+            const char* type_start = line + 1;
+            char* type_end = (char*)(intptr_t)ImStrchrRange(type_start, name_end, ']');
+            const char* name_start = type_end ? ImStrchrRange(type_end + 1, name_end, '[') : NULL;
+            if (!type_end || !name_start)
+            {
+                name_start = type_start; // Import legacy entries that have no type
+                type_start = "Window";
+            }
+            else
+            {
+                *type_end = 0; // Overwrite first ']'
+                name_start++;  // Skip second '['
+            }
+            entry_handler = FindSettingsHandler(type_start);
+            entry_data = entry_handler ? entry_handler->ReadOpenFn(&g, entry_handler, name_start) : NULL;
+        }
+        else if (entry_handler != NULL && entry_data != NULL)
+        {
+            // Let type handler parse the line
+            entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
+        }
+    }
+    ImGui::MemFree(buf);
+    g.SettingsLoaded = true;
+}
+
+void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsDirtyTimer = 0.0f;
+    if (!ini_filename)
+        return;
+
+    size_t ini_data_size = 0;
+    const char* ini_data = SaveIniSettingsToMemory(&ini_data_size);
+    FILE* f = ImFileOpen(ini_filename, "wt");
+    if (!f)
+        return;
+    fwrite(ini_data, sizeof(char), ini_data_size, f);
+    fclose(f);
+}
+
+// Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer
+const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsDirtyTimer = 0.0f;
+    g.SettingsIniData.Buf.resize(0);
+    g.SettingsIniData.Buf.push_back(0);
+    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
+    {
+        ImGuiSettingsHandler* handler = &g.SettingsHandlers[handler_n];
+        handler->WriteAllFn(&g, handler, &g.SettingsIniData);
+    }
+    if (out_size)
+        *out_size = (size_t)g.SettingsIniData.size();
+    return g.SettingsIniData.c_str();
+}
+
+static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
+{
+    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHash(name, 0));
+    if (!settings)
+        settings = CreateNewWindowSettings(name);
+    return (void*)settings;
+}
+
+static void SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
+{
+    ImGuiWindowSettings* settings = (ImGuiWindowSettings*)entry;
+    float x, y;
+    int i;
+    if (sscanf(line, "Pos=%f,%f", &x, &y) == 2)         settings->Pos = ImVec2(x, y);
+    else if (sscanf(line, "Size=%f,%f", &x, &y) == 2)   settings->Size = ImMax(ImVec2(x, y), GImGui->Style.WindowMinSize);
+    else if (sscanf(line, "Collapsed=%d", &i) == 1)     settings->Collapsed = (i != 0);
+}
+
+static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
+{
+    // Gather data from windows that were active during this session
+    ImGuiContext& g = *imgui_ctx;
+    for (int i = 0; i != g.Windows.Size; i++)
+    {
+        ImGuiWindow* window = g.Windows[i];
+        if (window->Flags & ImGuiWindowFlags_NoSavedSettings)
+            continue;
+
+        ImGuiWindowSettings* settings = (window->SettingsIdx != -1) ? &g.SettingsWindows[window->SettingsIdx] : ImGui::FindWindowSettings(window->ID);
+        if (!settings)
+        {
+            settings = CreateNewWindowSettings(window->Name);
+            window->SettingsIdx = g.SettingsWindows.index_from_pointer(settings);
+        }
+        IM_ASSERT(settings->ID == window->ID);
+        settings->Pos = window->Pos;
+        settings->Size = window->SizeFull;
+        settings->Collapsed = window->Collapsed;
+    }
+
+    // Write a buffer
+    // If a window wasn't opened in this session we preserve its settings
+    buf->reserve(buf->size() + g.SettingsWindows.Size * 96); // ballpark reserve
+    for (int i = 0; i != g.SettingsWindows.Size; i++)
+    {
+        const ImGuiWindowSettings* settings = &g.SettingsWindows[i];
+        if (settings->Pos.x == FLT_MAX)
+            continue;
+        const char* name = settings->Name;
+        if (const char* p = strstr(name, "###"))  // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID()
+            name = p;
+        buf->appendf("[%s][%s]\n", handler->TypeName, name);
+        buf->appendf("Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
+        buf->appendf("Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
+        buf->appendf("Collapsed=%d\n", settings->Collapsed);
+        buf->appendf("\n");
+    }
+}
+
+//-----------------------------------------------------------------------------
 // PLATFORM DEPENDENT HELPERS
 //-----------------------------------------------------------------------------
 
@@ -14119,7 +8898,7 @@
 #endif
 
 //-----------------------------------------------------------------------------
-// HELP, METRICS
+// METRICS/DEBUG WINDOW
 //-----------------------------------------------------------------------------
 
 void ImGui::ShowMetricsWindow(bool* p_open)
diff --git a/imgui.h b/imgui.h
index 52caf45..97f79a8 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (headers)
 
 // See imgui.cpp file for documentation.
@@ -23,8 +23,8 @@
 
 // Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY00 then bounced up to XYY01 when release tagging happens)
-#define IMGUI_VERSION               "1.63"
-#define IMGUI_VERSION_NUM           16301
+#define IMGUI_VERSION               "1.64"
+#define IMGUI_VERSION_NUM           16401
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert))
 
 // Define attributes of all API symbols declarations (e.g. for DLL under Windows)
diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index 49ef8bc..1702474 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (demo code)
 
 // Message to the person tempted to delete this file when integrating ImGui into their code base:
diff --git a/imgui_draw.cpp b/imgui_draw.cpp
index d7044ca..98fbc45 100644
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@@ -1,14 +1,21 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (drawing and font code)
 
-// Contains implementation for
-// - Default styles
-// - ImDrawList
-// - ImDrawData
-// - ImFontAtlas
-// - Internal Render Helpers
-// - ImFont
-// - Default font data
+/*
+
+Index of this file:
+- Cruft for stb_truetype/stb_rectpack implementation
+- Style functions (default style)
+- ImDrawList
+- ImDrawData
+- ShadeVertsXXX helpers functions
+- ImFontConfig
+- ImFontAtlas
+- ImFont
+- Internal Render Helpers
+- Default font data
+
+*/
 
 #if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
 #define _CRT_SECURE_NO_WARNINGS

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj b/examples/example_win32_directx11/example_win32_directx11.vcxproj
index 9aa0986..166602a 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx11.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
index ab1e3fb..1df6a0c 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_dx11.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj b/examples/example_win32_directx12/example_win32_directx12.vcxproj
index c82f000..38c8335 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx12.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
index 43fdeba..28a2557 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj b/examples/example_win32_directx9/example_win32_directx9.vcxproj
index ebc8a92..08f21c8 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj
@@ -143,6 +143,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx9.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
index 2ac28d1..914cd26 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_dx9.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/imgui.cpp b/imgui.cpp
index 0b3ea0f..28b986a 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (main code and documentation)
 
 // Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp for demo code.
@@ -19,32 +19,58 @@
 
 /*
 
- Index
- - MISSION STATEMENT
- - END-USER GUIDE
- - PROGRAMMER GUIDE (read me!)
-   - Read first
-   - How to update to a newer version of Dear ImGui
-   - Getting started with integrating Dear ImGui in your code/engine
-   - Using gamepad/keyboard navigation controls [BETA]
- - API BREAKING CHANGES (read me when you update!)
- - ISSUES & TODO LIST
- - FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
-   - How can I tell whether to dispatch mouse/keyboard to imgui or to my application?
-   - How can I display an image? What is ImTextureID, how does it works?
-   - How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.
-   - How can I use my own math types instead of ImVec2/ImVec4? 
-   - How can I load a different font than the default?
-   - How can I easily use icons in my application?
-   - How can I load multiple fonts?
-   - How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
-   - How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
-   - I integrated Dear ImGui in my engine and the text or lines are blurry..
-   - I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
-   - How can I help?
- - ISSUES & TODO-LIST
- - CODE
+Index of this file:
 
+DOCUMENTATION
+- MISSION STATEMENT
+- END-USER GUIDE
+- PROGRAMMER GUIDE (read me!)
+  - Read first
+  - How to update to a newer version of Dear ImGui
+  - Getting started with integrating Dear ImGui in your code/engine
+  - Using gamepad/keyboard navigation controls [BETA]
+- API BREAKING CHANGES (read me when you update!)
+- FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
+  - How can I tell whether to dispatch mouse/keyboard to imgui or to my application?
+  - How can I display an image? What is ImTextureID, how does it works?
+  - How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.
+  - How can I use my own math types instead of ImVec2/ImVec4? 
+  - How can I load a different font than the default?
+  - How can I easily use icons in my application?
+  - How can I load multiple fonts?
+  - How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
+  - How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
+  - I integrated Dear ImGui in my engine and the text or lines are blurry..
+  - I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
+  - How can I help?
+
+CODE
+- Forward Declarations
+- Context and Memory Allocators
+- User facing structures (ImGuiStyle, ImGuiIO)
+- Helper/Utilities (ImXXX functions, Color functions)
+- ImGuiStorage
+- ImGuiTextFilter
+- ImGuiTextBuffer
+- ImGuiListClipper
+- Main Code (most of the code! lots of stuff, needs tidying up)
+- Tooltips
+- Popups
+- Navigation
+- Columns
+- Drag and Drop
+- Logging
+- Settings
+- Platform Dependent Helpers
+- Metrics/Debug window
+
+*/
+
+//-----------------------------------------------------------------------------
+// Documentation
+//-----------------------------------------------------------------------------
+
+/*
 
  MISSION STATEMENT
  =================
@@ -472,11 +498,6 @@
  - 2014/08/28 (1.09) - changed the behavior of IO.PixelCenterOffset following various rendering fixes
 
 
- ISSUES & TODO-LIST
- ==================
- See TODO.txt
-
-
  FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
  ======================================
 
@@ -824,7 +845,6 @@
 // Visual Studio warnings
 #ifdef _MSC_VER
 #pragma warning (disable: 4127) // condition expression is constant
-#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
 #pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
 #endif
 
@@ -852,24 +872,6 @@
 #endif
 #endif
 
-static const ImS32  IM_S32_MIN = INT_MIN;    // (-2147483647 - 1), (0x80000000);
-static const ImS32  IM_S32_MAX = INT_MAX;    // (2147483647), (0x7FFFFFFF)
-static const ImU32  IM_U32_MIN = 0;
-static const ImU32  IM_U32_MAX = UINT_MAX;   // (0xFFFFFFFF)
-#ifdef LLONG_MIN
-static const ImS64  IM_S64_MIN = LLONG_MIN;  // (-9223372036854775807ll - 1ll);
-static const ImS64  IM_S64_MAX = LLONG_MAX;  // (9223372036854775807ll);
-#else
-static const ImS64  IM_S64_MIN = -9223372036854775807LL - 1;
-static const ImS64  IM_S64_MAX = 9223372036854775807LL;
-#endif
-static const ImU64  IM_U64_MIN = 0;
-#ifdef ULLONG_MAX
-static const ImU64  IM_U64_MAX = ULLONG_MAX; // (0xFFFFFFFFFFFFFFFFull);
-#else
-static const ImU64  IM_U64_MAX = (2ULL * 9223372036854775807LL + 1);
-#endif
-
 // When using CTRL+TAB (or Gamepad Square+L/R) we delay the visual a little in order to reduce visual noise doing a fast switch.
 static const float NAV_WINDOWING_HIGHLIGHT_DELAY   = 0.20f; // Time before the highlight and screen dimming starts fading in
 static const float NAV_WINDOWING_LIST_APPEAR_DELAY = 0.15f; // Time before the window list starts to appear
@@ -884,7 +886,6 @@
 static void             SetWindowCollapsed(ImGuiWindow* window, bool collapsed, ImGuiCond cond);
 static void             FindHoveredWindow();
 static ImGuiWindow*     CreateNewWindow(const char* name, ImVec2 size, ImGuiWindowFlags flags);
-static ImGuiWindowSettings* CreateNewWindowSettings(const char* name);
 static void             CheckStacksSize(ImGuiWindow* window, bool write);
 static ImVec2           CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window, bool snap_on_edges);
 
@@ -894,13 +895,15 @@
 
 static ImRect           GetViewportRect();
 
-static bool             InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data);
-static int              InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end);
-static ImVec2           InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL, ImVec2* out_offset = NULL, bool stop_on_new_line = false);
+// Settings
+static void*            SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name);
+static void             SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line);
+static void             SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf);
 
-static inline int       DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format);
-static void             DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg_1, const void* arg_2);
-static bool             DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format);
+// Platform Dependents default implementation for IO functions
+static const char*      GetClipboardTextFn_DefaultImpl(void* user_data);
+static void             SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
+static void             ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
 
 namespace ImGui
 {
@@ -909,29 +912,20 @@
 static void             NavUpdate();
 static void             NavUpdateWindowing();
 static void             NavUpdateWindowingList();
+static void             NavUpdateMoveResult();
+static float            NavUpdatePageUpPageDown(int allowed_dir_flags);
+static inline void      NavUpdateAnyRequestFlag();
 static void             NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id);
+static ImVec2           NavCalcPreferredRefPos();
+static void             NavSaveLastChildNavWindow(ImGuiWindow* nav_window);
+static ImGuiWindow*     NavRestoreLastChildNavWindow(ImGuiWindow* window);
 
 static void             UpdateMouseInputs();
 static void             UpdateMouseWheel();
 static void             UpdateManualResize(ImGuiWindow* window, const ImVec2& size_auto_fit, int* border_held, int resize_grip_count, ImU32 resize_grip_col[4]);
-
-// Template widget behaviors
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool             DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power);
-
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool             SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb);
 }
 
 //-----------------------------------------------------------------------------
-// Platform dependent default implementations
-//-----------------------------------------------------------------------------
-
-static const char*      GetClipboardTextFn_DefaultImpl(void* user_data);
-static void             SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
-static void             ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
-
-//-----------------------------------------------------------------------------
 // Context and Memory Allocators
 //-----------------------------------------------------------------------------
 
@@ -961,7 +955,7 @@
 static void*    GImAllocatorUserData = NULL;
 
 //-----------------------------------------------------------------------------
-// User facing structures
+// User facing main structures
 //-----------------------------------------------------------------------------
 
 ImGuiStyle::ImGuiStyle()
@@ -1106,7 +1100,7 @@
 }
 
 //-----------------------------------------------------------------------------
-// HELPERS
+// HELPERS/UTILITIES
 //-----------------------------------------------------------------------------
 
 ImVec2 ImLineClosestPoint(const ImVec2& a, const ImVec2& b, const ImVec2& p)
@@ -1245,19 +1239,6 @@
     buf[p - p_start] = 0;                   // Zero terminate
 }
 
-template<typename TYPE>
-static const char* ImAtoi(const char* src, TYPE* output)
-{
-    int negative = 0;
-    if (*src == '-') { negative = 1; src++; }
-    if (*src == '+') { src++; }
-    TYPE v = 0;
-    while (*src >= '0' && *src <= '9')
-        v = (v * 10) + (*src++ - '0');
-    *output = negative ? -v : v;
-    return src;
-}
-
 // A) MSVC version appears to return -1 on overflow, whereas glibc appears to return total count (which may be >= buf_size).
 // Ideally we would test for only one of those limits at runtime depending on the behavior the vsnprintf(), but trying to deduct it at compile time sounds like a pandora can of worm.
 // B) When buf==NULL vsnprintf() will return the output size.
@@ -1338,7 +1319,7 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImText* helpers
+// HELPERS/UTILITIES (ImText* helpers)
 //-----------------------------------------------------------------------------
 
 // Convert UTF-8 to 32-bits character, process single character input.
@@ -1520,109 +1501,6 @@
     return bytes_count;
 }
 
-ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
-{
-    float s = 1.0f/255.0f;
-    return ImVec4(
-        ((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
-}
-
-ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
-{
-    ImU32 out;
-    out  = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
-    return out;
-}
-
-ImU32 ImGui::GetColorU32(ImGuiCol idx, float alpha_mul)
-{
-    ImGuiStyle& style = GImGui->Style;
-    ImVec4 c = style.Colors[idx];
-    c.w *= style.Alpha * alpha_mul;
-    return ColorConvertFloat4ToU32(c);
-}
-
-ImU32 ImGui::GetColorU32(const ImVec4& col)
-{
-    ImGuiStyle& style = GImGui->Style;
-    ImVec4 c = col;
-    c.w *= style.Alpha;
-    return ColorConvertFloat4ToU32(c);
-}
-
-const ImVec4& ImGui::GetStyleColorVec4(ImGuiCol idx)
-{
-    ImGuiStyle& style = GImGui->Style;
-    return style.Colors[idx];
-}
-
-ImU32 ImGui::GetColorU32(ImU32 col)
-{
-    float style_alpha = GImGui->Style.Alpha;
-    if (style_alpha >= 1.0f)
-        return col;
-    ImU32 a = (col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT;
-    a = (ImU32)(a * style_alpha); // We don't need to clamp 0..255 because Style.Alpha is in 0..1 range.
-    return (col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
-}
-
-// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
-// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
-void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
-{
-    float K = 0.f;
-    if (g < b)
-    {
-        ImSwap(g, b);
-        K = -1.f;
-    }
-    if (r < g)
-    {
-        ImSwap(r, g);
-        K = -2.f / 6.f - K;
-    }
-
-    const float chroma = r - (g < b ? g : b);
-    out_h = ImFabs(K + (g - b) / (6.f * chroma + 1e-20f));
-    out_s = chroma / (r + 1e-20f);
-    out_v = r;
-}
-
-// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
-// also http://en.wikipedia.org/wiki/HSL_and_HSV
-void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
-{
-    if (s == 0.0f)
-    {
-        // gray
-        out_r = out_g = out_b = v;
-        return;
-    }
-
-    h = ImFmod(h, 1.0f) / (60.0f/360.0f);
-    int   i = (int)h;
-    float f = h - (float)i;
-    float p = v * (1.0f - s);
-    float q = v * (1.0f - s * f);
-    float t = v * (1.0f - s * (1.0f - f));
-
-    switch (i)
-    {
-    case 0: out_r = v; out_g = t; out_b = p; break;
-    case 1: out_r = q; out_g = v; out_b = p; break;
-    case 2: out_r = p; out_g = v; out_b = t; break;
-    case 3: out_r = p; out_g = q; out_b = v; break;
-    case 4: out_r = t; out_g = p; out_b = v; break;
-    case 5: default: out_r = v; out_g = p; out_b = q; break;
-    }
-}
-
 FILE* ImFileOpen(const char* filename, const char* mode)
 {
 #if defined(_WIN32) && !defined(__CYGWIN__)
@@ -1682,6 +1560,113 @@
 }
 
 //-----------------------------------------------------------------------------
+// COLOR FUNCTIONS
+//-----------------------------------------------------------------------------
+
+ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
+{
+    float s = 1.0f/255.0f;
+    return ImVec4(
+        ((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
+}
+
+ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
+{
+    ImU32 out;
+    out  = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
+    return out;
+}
+
+// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
+// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
+void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
+{
+    float K = 0.f;
+    if (g < b)
+    {
+        ImSwap(g, b);
+        K = -1.f;
+    }
+    if (r < g)
+    {
+        ImSwap(r, g);
+        K = -2.f / 6.f - K;
+    }
+
+    const float chroma = r - (g < b ? g : b);
+    out_h = ImFabs(K + (g - b) / (6.f * chroma + 1e-20f));
+    out_s = chroma / (r + 1e-20f);
+    out_v = r;
+}
+
+// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
+// also http://en.wikipedia.org/wiki/HSL_and_HSV
+void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
+{
+    if (s == 0.0f)
+    {
+        // gray
+        out_r = out_g = out_b = v;
+        return;
+    }
+
+    h = ImFmod(h, 1.0f) / (60.0f/360.0f);
+    int   i = (int)h;
+    float f = h - (float)i;
+    float p = v * (1.0f - s);
+    float q = v * (1.0f - s * f);
+    float t = v * (1.0f - s * (1.0f - f));
+
+    switch (i)
+    {
+    case 0: out_r = v; out_g = t; out_b = p; break;
+    case 1: out_r = q; out_g = v; out_b = p; break;
+    case 2: out_r = p; out_g = v; out_b = t; break;
+    case 3: out_r = p; out_g = q; out_b = v; break;
+    case 4: out_r = t; out_g = p; out_b = v; break;
+    case 5: default: out_r = v; out_g = p; out_b = q; break;
+    }
+}
+
+ImU32 ImGui::GetColorU32(ImGuiCol idx, float alpha_mul)
+{
+    ImGuiStyle& style = GImGui->Style;
+    ImVec4 c = style.Colors[idx];
+    c.w *= style.Alpha * alpha_mul;
+    return ColorConvertFloat4ToU32(c);
+}
+
+ImU32 ImGui::GetColorU32(const ImVec4& col)
+{
+    ImGuiStyle& style = GImGui->Style;
+    ImVec4 c = col;
+    c.w *= style.Alpha;
+    return ColorConvertFloat4ToU32(c);
+}
+
+const ImVec4& ImGui::GetStyleColorVec4(ImGuiCol idx)
+{
+    ImGuiStyle& style = GImGui->Style;
+    return style.Colors[idx];
+}
+
+ImU32 ImGui::GetColorU32(ImU32 col)
+{
+    float style_alpha = GImGui->Style.Alpha;
+    if (style_alpha >= 1.0f)
+        return col;
+    ImU32 a = (col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT;
+    a = (ImU32)(a * style_alpha); // We don't need to clamp 0..255 because Style.Alpha is in 0..1 range.
+    return (col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
+}
+
+//-----------------------------------------------------------------------------
 // ImGuiStorage
 // Helper: Key->value storage
 //-----------------------------------------------------------------------------
@@ -1983,51 +1968,6 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImGuiSimpleColumns (internal use only)
-//-----------------------------------------------------------------------------
-
-ImGuiMenuColumns::ImGuiMenuColumns()
-{
-    Count = 0;
-    Spacing = Width = NextWidth = 0.0f;
-    memset(Pos, 0, sizeof(Pos));
-    memset(NextWidths, 0, sizeof(NextWidths));
-}
-
-void ImGuiMenuColumns::Update(int count, float spacing, bool clear)
-{
-    IM_ASSERT(Count <= IM_ARRAYSIZE(Pos));
-    Count = count;
-    Width = NextWidth = 0.0f;
-    Spacing = spacing;
-    if (clear) memset(NextWidths, 0, sizeof(NextWidths));
-    for (int i = 0; i < Count; i++)
-    {
-        if (i > 0 && NextWidths[i] > 0.0f)
-            Width += Spacing;
-        Pos[i] = (float)(int)Width;
-        Width += NextWidths[i];
-        NextWidths[i] = 0.0f;
-    }
-}
-
-float ImGuiMenuColumns::DeclColumns(float w0, float w1, float w2) // not using va_arg because they promote float to double
-{
-    NextWidth = 0.0f;
-    NextWidths[0] = ImMax(NextWidths[0], w0);
-    NextWidths[1] = ImMax(NextWidths[1], w1);
-    NextWidths[2] = ImMax(NextWidths[2], w2);
-    for (int i = 0; i < 3; i++)
-        NextWidth += NextWidths[i] + ((i > 0 && NextWidths[i] > 0.0f) ? Spacing : 0.0f);
-    return ImMax(Width, NextWidth);
-}
-
-float ImGuiMenuColumns::CalcExtraSpace(float avail_w)
-{
-    return ImMax(0.0f, avail_w - Width);
-}
-
-//-----------------------------------------------------------------------------
 // ImGuiListClipper
 //-----------------------------------------------------------------------------
 
@@ -2112,9 +2052,11 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImGuiWindow
+// MAIN CODE
+// (this category is still too large and badly ordered, needs some tidying up)
 //-----------------------------------------------------------------------------
 
+// ImGuiWindow is mostly a dumb struct. It merely has a constructor and a few helper methods
 ImGuiWindow::ImGuiWindow(ImGuiContext* context, const char* name)
     : DrawListInst(&context->DrawListSharedData)
 {
@@ -2222,10 +2164,6 @@
     return id;
 }
 
-//-----------------------------------------------------------------------------
-// Internal API exposed in imgui_internal.h
-//-----------------------------------------------------------------------------
-
 static void SetCurrentWindow(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -2393,285 +2331,6 @@
     ItemSize(bb.GetSize(), text_offset_y);
 }
 
-static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
-{
-    if (ImFabs(dx) > ImFabs(dy))
-        return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
-    return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
-}
-
-static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
-{
-    if (a1 < b0)
-        return a1 - b0;
-    if (b1 < a0)
-        return a0 - b1;
-    return 0.0f;
-}
-
-static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
-{
-    if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
-    {
-        r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
-        r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
-    }
-    else
-    {
-        r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
-        r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
-    }
-}
-
-// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
-static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    if (g.NavLayer != window->DC.NavLayerCurrent)
-        return false;
-
-    const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
-    g.NavScoringCount++;
-
-    // When entering through a NavFlattened border, we consider child window items as fully clipped for scoring
-    if (window->ParentWindow == g.NavWindow)
-    {
-        IM_ASSERT((window->Flags | g.NavWindow->Flags) & ImGuiWindowFlags_NavFlattened);
-        if (!window->ClipRect.Contains(cand))
-            return false;
-        cand.ClipWithFull(window->ClipRect); // This allows the scored item to not overlap other candidates in the parent window
-    }
-
-    // We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
-    // For example, this ensure that items in one column are not reached when moving vertically from items in another column.
-    NavClampRectToVisibleAreaForMoveDir(g.NavMoveClipDir, cand, window->ClipRect);
-
-    // Compute distance between boxes
-    // FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
-    float dbx = NavScoreItemDistInterval(cand.Min.x, cand.Max.x, curr.Min.x, curr.Max.x);
-    float dby = NavScoreItemDistInterval(ImLerp(cand.Min.y, cand.Max.y, 0.2f), ImLerp(cand.Min.y, cand.Max.y, 0.8f), ImLerp(curr.Min.y, curr.Max.y, 0.2f), ImLerp(curr.Min.y, curr.Max.y, 0.8f)); // Scale down on Y to keep using box-distance for vertically touching items
-    if (dby != 0.0f && dbx != 0.0f)
-       dbx = (dbx/1000.0f) + ((dbx > 0.0f) ? +1.0f : -1.0f);
-    float dist_box = ImFabs(dbx) + ImFabs(dby);
-
-    // Compute distance between centers (this is off by a factor of 2, but we only compare center distances with each other so it doesn't matter)
-    float dcx = (cand.Min.x + cand.Max.x) - (curr.Min.x + curr.Max.x);
-    float dcy = (cand.Min.y + cand.Max.y) - (curr.Min.y + curr.Max.y);
-    float dist_center = ImFabs(dcx) + ImFabs(dcy); // L1 metric (need this for our connectedness guarantee)
-
-    // Determine which quadrant of 'curr' our candidate item 'cand' lies in based on distance
-    ImGuiDir quadrant;
-    float dax = 0.0f, day = 0.0f, dist_axial = 0.0f;
-    if (dbx != 0.0f || dby != 0.0f)
-    {
-        // For non-overlapping boxes, use distance between boxes
-        dax = dbx;
-        day = dby;
-        dist_axial = dist_box;
-        quadrant = NavScoreItemGetQuadrant(dbx, dby);
-    }
-    else if (dcx != 0.0f || dcy != 0.0f)
-    {
-        // For overlapping boxes with different centers, use distance between centers
-        dax = dcx;
-        day = dcy;
-        dist_axial = dist_center;
-        quadrant = NavScoreItemGetQuadrant(dcx, dcy);
-    }
-    else
-    {
-        // Degenerate case: two overlapping buttons with same center, break ties arbitrarily (note that LastItemId here is really the _previous_ item order, but it doesn't matter)
-        quadrant = (window->DC.LastItemId < g.NavId) ? ImGuiDir_Left : ImGuiDir_Right;
-    }
-
-#if IMGUI_DEBUG_NAV_SCORING
-    char buf[128];
-    if (ImGui::IsMouseHoveringRect(cand.Min, cand.Max))
-    {
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "dbox (%.2f,%.2f->%.4f)\ndcen (%.2f,%.2f->%.4f)\nd (%.2f,%.2f->%.4f)\nnav %c, quadrant %c", dbx, dby, dist_box, dcx, dcy, dist_center, dax, day, dist_axial, "WENS"[g.NavMoveDir], "WENS"[quadrant]);
-        ImDrawList* draw_list = ImGui::GetOverlayDrawList();
-        draw_list->AddRect(curr.Min, curr.Max, IM_COL32(255,200,0,100));
-        draw_list->AddRect(cand.Min, cand.Max, IM_COL32(255,255,0,200));
-        draw_list->AddRectFilled(cand.Max-ImVec2(4,4), cand.Max+ImGui::CalcTextSize(buf)+ImVec2(4,4), IM_COL32(40,0,0,150));
-        draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Max, ~0U, buf);
-    }
-    else if (g.IO.KeyCtrl) // Hold to preview score in matching quadrant. Press C to rotate.
-    {
-        if (IsKeyPressedMap(ImGuiKey_C)) { g.NavMoveDirLast = (ImGuiDir)((g.NavMoveDirLast + 1) & 3); g.IO.KeysDownDuration[g.IO.KeyMap[ImGuiKey_C]] = 0.01f; }
-        if (quadrant == g.NavMoveDir)
-        {
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "%.0f/%.0f", dist_box, dist_center);
-            ImDrawList* draw_list = ImGui::GetOverlayDrawList();
-            draw_list->AddRectFilled(cand.Min, cand.Max, IM_COL32(255, 0, 0, 200));
-            draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Min, IM_COL32(255, 255, 255, 255), buf);
-        }
-    }
- #endif
-
-    // Is it in the quadrant we're interesting in moving to?
-    bool new_best = false;
-    if (quadrant == g.NavMoveDir)
-    {
-        // Does it beat the current best candidate?
-        if (dist_box < result->DistBox)
-        {
-            result->DistBox = dist_box;
-            result->DistCenter = dist_center;
-            return true;
-        }
-        if (dist_box == result->DistBox)
-        {
-            // Try using distance between center points to break ties
-            if (dist_center < result->DistCenter)
-            {
-                result->DistCenter = dist_center;
-                new_best = true;
-            }
-            else if (dist_center == result->DistCenter)
-            {
-                // Still tied! we need to be extra-careful to make sure everything gets linked properly. We consistently break ties by symbolically moving "later" items
-                // (with higher index) to the right/downwards by an infinitesimal amount since we the current "best" button already (so it must have a lower index),
-                // this is fairly easy. This rule ensures that all buttons with dx==dy==0 will end up being linked in order of appearance along the x axis.
-                if (((g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down) ? dby : dbx) < 0.0f) // moving bj to the right/down decreases distance
-                    new_best = true;
-            }
-        }
-    }
-
-    // Axial check: if 'curr' has no link at all in some direction and 'cand' lies roughly in that direction, add a tentative link. This will only be kept if no "real" matches
-    // are found, so it only augments the graph produced by the above method using extra links. (important, since it doesn't guarantee strong connectedness)
-    // This is just to avoid buttons having no links in a particular direction when there's a suitable neighbor. you get good graphs without this too.
-    // 2017/09/29: FIXME: This now currently only enabled inside menu bars, ideally we'd disable it everywhere. Menus in particular need to catch failure. For general navigation it feels awkward.
-    // Disabling it may lead to disconnected graphs when nodes are very spaced out on different axis. Perhaps consider offering this as an option?
-    if (result->DistBox == FLT_MAX && dist_axial < result->DistAxial)  // Check axial match
-        if (g.NavLayer == 1 && !(g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
-            if ((g.NavMoveDir == ImGuiDir_Left && dax < 0.0f) || (g.NavMoveDir == ImGuiDir_Right && dax > 0.0f) || (g.NavMoveDir == ImGuiDir_Up && day < 0.0f) || (g.NavMoveDir == ImGuiDir_Down && day > 0.0f))
-            {
-                result->DistAxial = dist_axial;
-                new_best = true;
-            }
-
-    return new_best;
-}
-
-static void NavSaveLastChildNavWindow(ImGuiWindow* child_window)
-{
-    ImGuiWindow* parent_window = child_window;
-    while (parent_window && (parent_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (parent_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
-        parent_window = parent_window->ParentWindow;
-    if (parent_window && parent_window != child_window)
-        parent_window->NavLastChildNavWindow = child_window;
-}
-
-// Call when we are expected to land on Layer 0 after FocusWindow()
-static ImGuiWindow* NavRestoreLastChildNavWindow(ImGuiWindow* window)
-{
-    return window->NavLastChildNavWindow ? window->NavLastChildNavWindow : window;
-}
-
-static void NavRestoreLayer(int layer)
-{
-    ImGuiContext& g = *GImGui;
-    g.NavLayer = layer;
-    if (layer == 0)
-        g.NavWindow = NavRestoreLastChildNavWindow(g.NavWindow);
-    if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
-        ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
-    else
-        ImGui::NavInitWindow(g.NavWindow, true);
-}
-
-static inline void NavUpdateAnyRequestFlag()
-{
-    ImGuiContext& g = *GImGui;
-    g.NavAnyRequest = g.NavMoveRequest || g.NavInitRequest || (IMGUI_DEBUG_NAV_SCORING && g.NavWindow != NULL);
-    if (g.NavAnyRequest)
-        IM_ASSERT(g.NavWindow != NULL);
-}
-
-bool ImGui::NavMoveRequestButNoResultYet()
-{
-    ImGuiContext& g = *GImGui;
-    return g.NavMoveRequest && g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0;
-}
-
-void ImGui::NavMoveRequestCancel()
-{
-    ImGuiContext& g = *GImGui;
-    g.NavMoveRequest = false;
-    NavUpdateAnyRequestFlag();
-}
-
-// We get there when either NavId == id, or when g.NavAnyRequest is set (which is updated by NavUpdateAnyRequestFlag above)
-static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    //if (!g.IO.NavActive)  // [2017/10/06] Removed this possibly redundant test but I am not sure of all the side-effects yet. Some of the feature here will need to work regardless of using a _NoNavInputs flag.
-    //    return;
-
-    const ImGuiItemFlags item_flags = window->DC.ItemFlags;
-    const ImRect nav_bb_rel(nav_bb.Min - window->Pos, nav_bb.Max - window->Pos);
-
-    // Process Init Request
-    if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
-    {
-        // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
-        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
-        {
-            g.NavInitResultId = id;
-            g.NavInitResultRectRel = nav_bb_rel;
-        }
-        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
-        {
-            g.NavInitRequest = false; // Found a match, clear request
-            NavUpdateAnyRequestFlag();
-        }
-    }
-
-    // Process Move Request (scoring for navigation)
-    // FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
-    if ((g.NavId != id || (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AllowCurrentNavId)) && !(item_flags & ImGuiItemFlags_NoNav))
-    {
-        ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
-#if IMGUI_DEBUG_NAV_SCORING
-        // [DEBUG] Score all items in NavWindow at all times
-        if (!g.NavMoveRequest)
-            g.NavMoveDir = g.NavMoveDirLast;
-        bool new_best = NavScoreItem(result, nav_bb) && g.NavMoveRequest;
-#else
-        bool new_best = g.NavMoveRequest && NavScoreItem(result, nav_bb);
-#endif
-        if (new_best)
-        {
-            result->ID = id;
-            result->Window = window;
-            result->RectRel = nav_bb_rel;
-        }
-
-        const float VISIBLE_RATIO = 0.70f;
-        if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
-            if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
-                if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
-                {
-                    result = &g.NavMoveResultLocalVisibleSet;
-                    result->ID = id;
-                    result->Window = window;
-                    result->RectRel = nav_bb_rel;
-                }
-    }
-
-    // Update window-relative bounding box of navigated item
-    if (g.NavId == id)
-    {
-        g.NavWindow = window;                                           // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
-        g.NavLayer = window->DC.NavLayerCurrent;
-        g.NavIdIsAlive = true;
-        g.NavIdTabCounter = window->FocusIdxTabCounter;
-        window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel;    // Store item bounding box (relative to window position)
-    }
-}
-
 // Declare item bounding box for clipping and interaction.
 // Note that the size can be different than the one provided to ItemSize(). Typically, widgets that spread over available surface
 // declare their minimum size requirement to ItemSize() and then use a larger region for drawing/interaction, which is passed to ItemAdd().
@@ -2972,662 +2631,6 @@
     return &GImGui->DrawListSharedData;
 }
 
-// This needs to be called before we submit any widget (aka in or before Begin)
-void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(window == g.NavWindow);
-    bool init_for_nav = false;
-    if (!(window->Flags & ImGuiWindowFlags_NoNavInputs))
-        if (!(window->Flags & ImGuiWindowFlags_ChildWindow) || (window->Flags & ImGuiWindowFlags_Popup) || (window->NavLastIds[0] == 0) || force_reinit)
-            init_for_nav = true;
-    if (init_for_nav)
-    {
-        SetNavID(0, g.NavLayer);
-        g.NavInitRequest = true;
-        g.NavInitRequestFromMove = false;
-        g.NavInitResultId = 0;
-        g.NavInitResultRectRel = ImRect();
-        NavUpdateAnyRequestFlag();
-    }
-    else
-    {
-        g.NavId = window->NavLastIds[0];
-    }
-}
-
-static ImVec2 NavCalcPreferredRefPos()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow)
-        return ImFloor(g.IO.MousePos);
-
-    // When navigation is active and mouse is disabled, decide on an arbitrary position around the bottom left of the currently navigated item
-    const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
-    ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x*4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
-    ImRect visible_rect = GetViewportRect();
-    return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
-}
-
-static int FindWindowIndex(ImGuiWindow* window) // FIXME-OPT O(N)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = g.Windows.Size-1; i >= 0; i--)
-        if (g.Windows[i] == window)
-            return i;
-    return -1;
-}
-
-static ImGuiWindow* FindWindowNavFocusable(int i_start, int i_stop, int dir) // FIXME-OPT O(N)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = i_start; i >= 0 && i < g.Windows.Size && i != i_stop; i += dir)
-        if (ImGui::IsWindowNavFocusable(g.Windows[i]))
-            return g.Windows[i];
-    return NULL;
-}
-
-float ImGui::GetNavInputAmount(ImGuiNavInput n, ImGuiInputReadMode mode)
-{
-    ImGuiContext& g = *GImGui;
-    if (mode == ImGuiInputReadMode_Down)
-        return g.IO.NavInputs[n];                         // Instant, read analog input (0.0f..1.0f, as provided by user)
-
-    const float t = g.IO.NavInputsDownDuration[n];
-    if (t < 0.0f && mode == ImGuiInputReadMode_Released)  // Return 1.0f when just released, no repeat, ignore analog input.
-        return (g.IO.NavInputsDownDurationPrev[n] >= 0.0f ? 1.0f : 0.0f);
-    if (t < 0.0f)
-        return 0.0f;
-    if (mode == ImGuiInputReadMode_Pressed)               // Return 1.0f when just pressed, no repeat, ignore analog input.
-        return (t == 0.0f) ? 1.0f : 0.0f;
-    if (mode == ImGuiInputReadMode_Repeat)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
-    if (mode == ImGuiInputReadMode_RepeatSlow)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 1.00f, g.IO.KeyRepeatRate * 2.00f);
-    if (mode == ImGuiInputReadMode_RepeatFast)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.30f);
-    return 0.0f;
-}
-
-ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor, float fast_factor)
-{
-    ImVec2 delta(0.0f, 0.0f);
-    if (dir_sources & ImGuiNavDirSourceFlags_Keyboard)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_KeyRight_, mode)   - GetNavInputAmount(ImGuiNavInput_KeyLeft_,   mode), GetNavInputAmount(ImGuiNavInput_KeyDown_,   mode) - GetNavInputAmount(ImGuiNavInput_KeyUp_,   mode));
-    if (dir_sources & ImGuiNavDirSourceFlags_PadDPad)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_DpadRight, mode)   - GetNavInputAmount(ImGuiNavInput_DpadLeft,   mode), GetNavInputAmount(ImGuiNavInput_DpadDown,   mode) - GetNavInputAmount(ImGuiNavInput_DpadUp,   mode));
-    if (dir_sources & ImGuiNavDirSourceFlags_PadLStick)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_LStickRight, mode) - GetNavInputAmount(ImGuiNavInput_LStickLeft, mode), GetNavInputAmount(ImGuiNavInput_LStickDown, mode) - GetNavInputAmount(ImGuiNavInput_LStickUp, mode));
-    if (slow_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakSlow))
-        delta *= slow_factor;
-    if (fast_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakFast))
-        delta *= fast_factor;
-    return delta;
-}
-
-static void NavUpdateWindowingHighlightWindow(int focus_change_dir)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavWindowingTarget);
-    if (g.NavWindowingTarget->Flags & ImGuiWindowFlags_Modal)
-        return;
-
-    const int i_current = FindWindowIndex(g.NavWindowingTarget);
-    ImGuiWindow* window_target = FindWindowNavFocusable(i_current + focus_change_dir, -INT_MAX, focus_change_dir);
-    if (!window_target)
-        window_target = FindWindowNavFocusable((focus_change_dir < 0) ? (g.Windows.Size - 1) : 0, i_current, focus_change_dir);
-    if (window_target) // Don't reset windowing target if there's a single window in the list
-        g.NavWindowingTarget = g.NavWindowingTargetAnim = window_target;
-    g.NavWindowingToggleLayer = false;
-}
-
-// Window management mode (hold to: change focus/move/resize, tap to: toggle menu layer)
-static void ImGui::NavUpdateWindowing()
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* apply_focus_window = NULL;
-    bool apply_toggle_layer = false;
-
-    ImGuiWindow* modal_window = GetFrontMostPopupModal();
-    if (modal_window != NULL)
-    {
-        g.NavWindowingTarget = NULL;
-        return;
-    }
-
-    // Fade out
-    if (g.NavWindowingTargetAnim && g.NavWindowingTarget == NULL)
-    {
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha - g.IO.DeltaTime * 10.0f, 0.0f);
-        if (g.DimBgRatio <= 0.0f && g.NavWindowingHighlightAlpha <= 0.0f)
-            g.NavWindowingTargetAnim = NULL;
-    }
-
-    // Start CTRL-TAB or Square+L/R window selection
-    bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
-    bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
-    if (start_windowing_with_gamepad || start_windowing_with_keyboard)
-        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.Windows.Size - 1, -INT_MAX, -1))
-        {
-            g.NavWindowingTarget = g.NavWindowingTargetAnim = window;
-            g.NavWindowingTimer = g.NavWindowingHighlightAlpha = 0.0f;
-            g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
-            g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
-        }
-
-    // Gamepad update
-    g.NavWindowingTimer += g.IO.DeltaTime;
-    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavGamepad)
-    {
-        // Highlight only appears after a brief time holding the button, so that a fast tap on PadMenu (to toggle NavLayer) doesn't add visual noise
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f));
-
-        // Select window to focus
-        const int focus_change_dir = (int)IsNavInputPressed(ImGuiNavInput_FocusPrev, ImGuiInputReadMode_RepeatSlow) - (int)IsNavInputPressed(ImGuiNavInput_FocusNext, ImGuiInputReadMode_RepeatSlow);
-        if (focus_change_dir != 0)
-        {
-            NavUpdateWindowingHighlightWindow(focus_change_dir);
-            g.NavWindowingHighlightAlpha = 1.0f;
-        }
-
-        // Single press toggles NavLayer, long press with L/R apply actual focus on release (until then the window was merely rendered front-most)
-        if (!IsNavInputDown(ImGuiNavInput_Menu))
-        {
-            g.NavWindowingToggleLayer &= (g.NavWindowingHighlightAlpha < 1.0f); // Once button was held long enough we don't consider it a tap-to-toggle-layer press anymore.
-            if (g.NavWindowingToggleLayer && g.NavWindow)
-                apply_toggle_layer = true;
-            else if (!g.NavWindowingToggleLayer)
-                apply_focus_window = g.NavWindowingTarget;
-            g.NavWindowingTarget = NULL;
-        }
-    }
-
-    // Keyboard: Focus
-    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavKeyboard)
-    {
-        // Visuals only appears after a brief time after pressing TAB the first time, so that a fast CTRL+TAB doesn't add visual noise
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f)); // 1.0f
-        if (IsKeyPressedMap(ImGuiKey_Tab, true))
-            NavUpdateWindowingHighlightWindow(g.IO.KeyShift ? +1 : -1);
-        if (!g.IO.KeyCtrl)
-            apply_focus_window = g.NavWindowingTarget;
-    }
-
-    // Keyboard: Press and Release ALT to toggle menu layer
-    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
-    if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && IsNavInputPressed(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))
-        if (IsMousePosValid(&g.IO.MousePos) == IsMousePosValid(&g.IO.MousePosPrev))
-            apply_toggle_layer = true;
-
-    // Move window
-    if (g.NavWindowingTarget && !(g.NavWindowingTarget->Flags & ImGuiWindowFlags_NoMove))
-    {
-        ImVec2 move_delta;
-        if (g.NavInputSource == ImGuiInputSource_NavKeyboard && !g.IO.KeyShift)
-            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard, ImGuiInputReadMode_Down);
-        if (g.NavInputSource == ImGuiInputSource_NavGamepad)
-            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down);
-        if (move_delta.x != 0.0f || move_delta.y != 0.0f)
-        {
-            const float NAV_MOVE_SPEED = 800.0f;
-            const float move_speed = ImFloor(NAV_MOVE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); // FIXME: Doesn't code variable framerate very well
-            g.NavWindowingTarget->RootWindow->Pos += move_delta * move_speed;
-            g.NavDisableMouseHover = true;
-            MarkIniSettingsDirty(g.NavWindowingTarget);
-        }
-    }
-
-    // Apply final focus
-    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
-    {
-        g.NavDisableHighlight = false;
-        g.NavDisableMouseHover = true;
-        apply_focus_window = NavRestoreLastChildNavWindow(apply_focus_window);
-        ClosePopupsOverWindow(apply_focus_window);
-        FocusWindow(apply_focus_window);
-        if (apply_focus_window->NavLastIds[0] == 0)
-            NavInitWindow(apply_focus_window, false);
-
-        // If the window only has a menu layer, select it directly
-        if (apply_focus_window->DC.NavLayerActiveMask == (1 << 1))
-            g.NavLayer = 1;
-    }
-    if (apply_focus_window)
-        g.NavWindowingTarget = NULL;
-
-    // Apply menu/layer toggle
-    if (apply_toggle_layer && g.NavWindow)
-    {
-        // Move to parent menu if necessary
-        ImGuiWindow* new_nav_window = g.NavWindow;
-        while ((new_nav_window->DC.NavLayerActiveMask & (1 << 1)) == 0 && (new_nav_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (new_nav_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
-            new_nav_window = new_nav_window->ParentWindow;
-
-        if (new_nav_window != g.NavWindow)
-        {
-            ImGuiWindow* old_nav_window = g.NavWindow;
-            FocusWindow(new_nav_window);
-            new_nav_window->NavLastChildNavWindow = old_nav_window;
-        }
-        g.NavDisableHighlight = false;
-        g.NavDisableMouseHover = true;
-        NavRestoreLayer((g.NavWindow->DC.NavLayerActiveMask & (1 << 1)) ? (g.NavLayer ^ 1) : 0);
-    }
-}
-
-// Window has already passed the IsWindowNavFocusable()
-static const char* GetFallbackWindowNameForWindowingList(ImGuiWindow* window)
-{
-    if (window->Flags & ImGuiWindowFlags_Popup)
-        return "(Popup)";
-    if ((window->Flags & ImGuiWindowFlags_MenuBar) && strcmp(window->Name, "##MainMenuBar") == 0)
-        return "(Main menu bar)";
-    return "(Untitled)";
-}
-
-// Overlay displayed when using CTRL+TAB. Called by EndFrame().
-void ImGui::NavUpdateWindowingList()
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavWindowingTarget != NULL);
-
-    if (g.NavWindowingTimer < NAV_WINDOWING_LIST_APPEAR_DELAY)
-        return;
-
-    if (g.NavWindowingList == NULL)
-        g.NavWindowingList = FindWindowByName("###NavWindowingList");
-    SetNextWindowSizeConstraints(ImVec2(g.IO.DisplaySize.x * 0.20f, g.IO.DisplaySize.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
-    SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
-    PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
-    Begin("###NavWindowingList", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings);
-    for (int n = g.Windows.Size - 1; n >= 0; n--)
-    {
-        ImGuiWindow* window = g.Windows[n];
-        if (!IsWindowNavFocusable(window))
-            continue;
-        const char* label = window->Name;
-        if (label == FindRenderedTextEnd(label))
-            label = GetFallbackWindowNameForWindowingList(window);
-        Selectable(label, g.NavWindowingTarget == window);
-    }
-    End();
-    PopStyleVar();
-}
-
-// Scroll to keep newly navigated item fully into view
-// NB: We modify rect_rel by the amount we scrolled for, so it is immediately updated.
-static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item_rect)
-{
-    ImRect window_rect(window->InnerMainRect.Min - ImVec2(1, 1), window->InnerMainRect.Max + ImVec2(1, 1));
-    //g.OverlayDrawList.AddRect(window_rect.Min, window_rect.Max, IM_COL32_WHITE); // [DEBUG]
-    if (window_rect.Contains(item_rect))
-        return;
-
-    ImGuiContext& g = *GImGui;
-    if (window->ScrollbarX && item_rect.Min.x < window_rect.Min.x)
-    {
-        window->ScrollTarget.x = item_rect.Min.x - window->Pos.x + window->Scroll.x - g.Style.ItemSpacing.x;
-        window->ScrollTargetCenterRatio.x = 0.0f;
-    }
-    else if (window->ScrollbarX && item_rect.Max.x >= window_rect.Max.x)
-    {
-        window->ScrollTarget.x = item_rect.Max.x - window->Pos.x + window->Scroll.x + g.Style.ItemSpacing.x;
-        window->ScrollTargetCenterRatio.x = 1.0f;
-    }
-    if (item_rect.Min.y < window_rect.Min.y)
-    {
-        window->ScrollTarget.y = item_rect.Min.y - window->Pos.y + window->Scroll.y - g.Style.ItemSpacing.y;
-        window->ScrollTargetCenterRatio.y = 0.0f;
-    }
-    else if (item_rect.Max.y >= window_rect.Max.y)
-    {
-        window->ScrollTarget.y = item_rect.Max.y - window->Pos.y + window->Scroll.y + g.Style.ItemSpacing.y;
-        window->ScrollTargetCenterRatio.y = 1.0f;
-    }
-}
-
-static void ImGui::NavUpdate()
-{
-    ImGuiContext& g = *GImGui;
-    g.IO.WantSetMousePos = false;
-
-#if 0
-    if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
-#endif
-
-    bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
-    bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
-
-    // Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
-    if (nav_gamepad_active)
-        if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
-            g.NavInputSource = ImGuiInputSource_NavGamepad;
-
-    // Update Keyboard->Nav inputs mapping
-    if (nav_keyboard_active)
-    {
-        #define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
-        NAV_MAP_KEY(ImGuiKey_Space,     ImGuiNavInput_Activate );
-        NAV_MAP_KEY(ImGuiKey_Enter,     ImGuiNavInput_Input    );
-        NAV_MAP_KEY(ImGuiKey_Escape,    ImGuiNavInput_Cancel   );
-        NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
-        NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
-        NAV_MAP_KEY(ImGuiKey_UpArrow,   ImGuiNavInput_KeyUp_   );
-        NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
-        if (g.IO.KeyCtrl)   g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
-        if (g.IO.KeyShift)  g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
-        if (g.IO.KeyAlt)    g.IO.NavInputs[ImGuiNavInput_KeyMenu_]  = 1.0f;
-        #undef NAV_MAP_KEY
-    }
-
-    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
-    for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
-        g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
-
-    // Process navigation init request (select first/default focus)
-    if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
-    {
-        // Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
-        IM_ASSERT(g.NavWindow);
-        if (g.NavInitRequestFromMove)
-            SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
-        else
-            SetNavID(g.NavInitResultId, g.NavLayer);
-        g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
-    }
-    g.NavInitRequest = false;
-    g.NavInitRequestFromMove = false;
-    g.NavInitResultId = 0;
-    g.NavJustMovedToId = 0;
-
-    // Process navigation move request
-    if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
-    {
-        // Select which result to use
-        ImGuiNavMoveResult* result = (g.NavMoveResultLocal.ID != 0) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
-
-        // PageUp/PageDown behavior first jumps to the bottom/top mostly visible item, _otherwise_ use the result from the previous/next page.
-        if (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet)
-            if (g.NavMoveResultLocalVisibleSet.ID != 0 && g.NavMoveResultLocalVisibleSet.ID != g.NavId)
-                result = &g.NavMoveResultLocalVisibleSet;
-
-        // Maybe entering a flattened child from the outside? In this case solve the tie using the regular scoring rules.
-        if (result != &g.NavMoveResultOther && g.NavMoveResultOther.ID != 0 && g.NavMoveResultOther.Window->ParentWindow == g.NavWindow)
-            if ((g.NavMoveResultOther.DistBox < result->DistBox) || (g.NavMoveResultOther.DistBox == result->DistBox && g.NavMoveResultOther.DistCenter < result->DistCenter))
-                result = &g.NavMoveResultOther;
-        IM_ASSERT(g.NavWindow && result->Window);
-
-        // Scroll to keep newly navigated item fully into view.
-        if (g.NavLayer == 0)
-        {
-            ImRect rect_abs = ImRect(result->RectRel.Min + result->Window->Pos, result->RectRel.Max + result->Window->Pos);
-            NavScrollToBringItemIntoView(result->Window, rect_abs);
-
-            // Estimate upcoming scroll so we can offset our result position so mouse position can be applied immediately after in NavUpdate()
-            ImVec2 next_scroll = CalcNextScrollFromScrollTargetAndClamp(result->Window, false);
-            ImVec2 delta_scroll = result->Window->Scroll - next_scroll;
-            result->RectRel.Translate(delta_scroll);
-
-            // Also scroll parent window to keep us into view if necessary (we could/should technically recurse back the whole the parent hierarchy).
-            if (result->Window->Flags & ImGuiWindowFlags_ChildWindow)
-                NavScrollToBringItemIntoView(result->Window->ParentWindow, ImRect(rect_abs.Min + delta_scroll, rect_abs.Max + delta_scroll));
-        }
-
-        // Apply result from previous frame navigation directional move request
-        ClearActiveID();
-        g.NavWindow = result->Window;
-        SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
-        g.NavJustMovedToId = result->ID;
-        g.NavMoveFromClampedRefRect = false;
-    }
-
-    // When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
-    if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
-    {
-        IM_ASSERT(g.NavMoveRequest);
-        if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
-            g.NavDisableHighlight = false;
-        g.NavMoveRequestForward = ImGuiNavForward_None;
-    }
-
-    // Apply application mouse position movement, after we had a chance to process move request result.
-    if (g.NavMousePosDirty && g.NavIdIsAlive)
-    {
-        // Set mouse position given our knowledge of the navigated item position from last frame
-        if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
-        {
-            if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
-            {
-                g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
-                g.IO.WantSetMousePos = true;
-            }
-        }
-        g.NavMousePosDirty = false;
-    }
-    g.NavIdIsAlive = false;
-    g.NavJustTabbedId = 0;
-    IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
-
-    // Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
-    if (g.NavWindow)
-        NavSaveLastChildNavWindow(g.NavWindow);
-    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
-        g.NavWindow->NavLastChildNavWindow = NULL;
-
-    NavUpdateWindowing();
-
-    // Set output flags for user application
-    g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
-    g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
-
-    // Process NavCancel input (to close a popup, get back to parent, clear focus)
-    if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
-    {
-        if (g.ActiveId != 0)
-        {
-            ClearActiveID();
-        }
-        else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
-        {
-            // Exit child window
-            ImGuiWindow* child_window = g.NavWindow;
-            ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
-            IM_ASSERT(child_window->ChildId != 0);
-            FocusWindow(parent_window);
-            SetNavID(child_window->ChildId, 0);
-            g.NavIdIsAlive = false;
-            if (g.NavDisableMouseHover)
-                g.NavMousePosDirty = true;
-        }
-        else if (g.OpenPopupStack.Size > 0)
-        {
-            // Close open popup/menu
-            if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
-                ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-        }
-        else if (g.NavLayer != 0)
-        {
-            // Leave the "menu" layer
-            NavRestoreLayer(0);
-        }
-        else
-        {
-            // Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
-            if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
-                g.NavWindow->NavLastIds[0] = 0;
-            g.NavId = 0;
-        }
-    }
-
-    // Process manual activation request
-    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
-    if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-    {
-        bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
-        bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
-        if (g.ActiveId == 0 && activate_pressed)
-            g.NavActivateId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
-            g.NavActivateDownId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
-            g.NavActivatePressedId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
-            g.NavInputId = g.NavId;
-    }
-    if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-        g.NavDisableHighlight = true;
-    if (g.NavActivateId != 0)
-        IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
-    g.NavMoveRequest = false;
-
-    // Process programmatic activation request
-    if (g.NavNextActivateId != 0)
-        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
-    g.NavNextActivateId = 0;
-
-    // Initiate directional inputs request
-    const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
-    if (g.NavMoveRequestForward == ImGuiNavForward_None)
-    {
-        g.NavMoveDir = ImGuiDir_None;
-        g.NavMoveRequestFlags = 0;
-        if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-        {
-            if ((allowed_dir_flags & (1<<ImGuiDir_Left))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Up))    && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp,   ImGuiNavInput_KeyUp_,   ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Down))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
-        }
-        g.NavMoveClipDir = g.NavMoveDir;
-    }
-    else
-    {
-        // Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
-        // (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
-        IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
-        IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
-        g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
-    }
-
-    // PageUp/PageDown scroll
-    float nav_scoring_rect_offset_y = 0.0f;
-    if (nav_keyboard_active && g.NavMoveDir == ImGuiDir_None && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget && g.NavLayer == 0)
-    {
-        ImGuiWindow* window = g.NavWindow;
-        bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && (allowed_dir_flags & (1 << ImGuiDir_Up));
-        bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && (allowed_dir_flags & (1 << ImGuiDir_Down));
-        if ((page_up_held && !page_down_held) || (page_down_held && !page_up_held))
-        {
-            if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
-            {
-                // Fallback manual-scroll when window has no navigable item
-                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
-                    SetWindowScrollY(window, window->Scroll.y - window->InnerClipRect.GetHeight());
-                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
-                    SetWindowScrollY(window, window->Scroll.y + window->InnerClipRect.GetHeight());
-            }
-            else
-            {
-                const ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
-                const float page_offset_y = ImMax(0.0f, window->InnerClipRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
-                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
-                {
-                    nav_scoring_rect_offset_y = -page_offset_y;
-                    g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
-                    g.NavMoveClipDir = ImGuiDir_Up;
-                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
-                }
-                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
-                {
-                    nav_scoring_rect_offset_y = +page_offset_y;
-                    g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
-                    g.NavMoveClipDir = ImGuiDir_Down;
-                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
-                }
-            }
-        }
-    }
-
-    if (g.NavMoveDir != ImGuiDir_None)
-    {
-        g.NavMoveRequest = true;
-        g.NavMoveDirLast = g.NavMoveDir;
-    }
-
-    // If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
-    if (g.NavMoveRequest && g.NavId == 0)
-    {
-        g.NavInitRequest = g.NavInitRequestFromMove = true;
-        g.NavInitResultId = 0;
-        g.NavDisableHighlight = false;
-    }
-
-    NavUpdateAnyRequestFlag();
-
-    // Scrolling
-    if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
-    {
-        // *Fallback* manual-scroll with Nav directional keys when window has no navigable item
-        ImGuiWindow* window = g.NavWindow;
-        const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
-        if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
-        {
-            if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
-                SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
-            if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
-                SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
-        }
-
-        // *Normal* Manual scroll with NavScrollXXX keys
-        // Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
-        ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
-        if (scroll_dir.x != 0.0f && window->ScrollbarX)
-        {
-            SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
-            g.NavMoveFromClampedRefRect = true;
-        }
-        if (scroll_dir.y != 0.0f)
-        {
-            SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
-            g.NavMoveFromClampedRefRect = true;
-        }
-    }
-
-    // Reset search results
-    g.NavMoveResultLocal.Clear();
-    g.NavMoveResultLocalVisibleSet.Clear();
-    g.NavMoveResultOther.Clear();
-
-    // When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
-    if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
-    {
-        ImGuiWindow* window = g.NavWindow;
-        ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
-        if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
-        {
-            float pad = window->CalcFontSize() * 0.5f;
-            window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
-            window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
-            g.NavId = 0;
-        }
-        g.NavMoveFromClampedRefRect = false;
-    }
-
-    // For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
-    ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
-    g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
-    g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
-    g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
-    g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
-    IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
-    //g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
-    g.NavScoringCount = 0;
-#if IMGUI_DEBUG_NAV_RECTS
-    if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
-    if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
-#endif
-}
-
 void ImGui::StartMouseMovingWindow(ImGuiWindow* window)
 {
     // Set ActiveId even if the _NoMove flag is set. Without it, dragging away from a window with _NoMove would activate hover on other windows.
@@ -4010,65 +3013,6 @@
     Begin("Debug##Default");
 }
 
-static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
-{
-    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHash(name, 0));
-    if (!settings)
-        settings = CreateNewWindowSettings(name);
-    return (void*)settings;
-}
-
-static void SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
-{
-    ImGuiWindowSettings* settings = (ImGuiWindowSettings*)entry;
-    float x, y;
-    int i;
-    if (sscanf(line, "Pos=%f,%f", &x, &y) == 2)         settings->Pos = ImVec2(x, y);
-    else if (sscanf(line, "Size=%f,%f", &x, &y) == 2)   settings->Size = ImMax(ImVec2(x, y), GImGui->Style.WindowMinSize);
-    else if (sscanf(line, "Collapsed=%d", &i) == 1)     settings->Collapsed = (i != 0);
-}
-
-static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
-{
-    // Gather data from windows that were active during this session
-    ImGuiContext& g = *imgui_ctx;
-    for (int i = 0; i != g.Windows.Size; i++)
-    {
-        ImGuiWindow* window = g.Windows[i];
-        if (window->Flags & ImGuiWindowFlags_NoSavedSettings)
-            continue;
-
-        ImGuiWindowSettings* settings = (window->SettingsIdx != -1) ? &g.SettingsWindows[window->SettingsIdx] : ImGui::FindWindowSettings(window->ID);
-        if (!settings)
-        {
-            settings = CreateNewWindowSettings(window->Name);
-            window->SettingsIdx = g.SettingsWindows.index_from_pointer(settings);
-        }
-        IM_ASSERT(settings->ID == window->ID);
-        settings->Pos = window->Pos;
-        settings->Size = window->SizeFull;
-        settings->Collapsed = window->Collapsed;
-    }
-
-    // Write a buffer
-    // If a window wasn't opened in this session we preserve its settings
-    buf->reserve(buf->size() + g.SettingsWindows.Size * 96); // ballpark reserve
-    for (int i = 0; i != g.SettingsWindows.Size; i++)
-    {
-        const ImGuiWindowSettings* settings = &g.SettingsWindows[i];
-        if (settings->Pos.x == FLT_MAX)
-            continue;
-        const char* name = settings->Name;
-        if (const char* p = strstr(name, "###"))  // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID()
-            name = p;
-        buf->appendf("[%s][%s]\n", handler->TypeName, name);
-        buf->appendf("Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
-        buf->appendf("Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
-        buf->appendf("Collapsed=%d\n", settings->Collapsed);
-        buf->appendf("\n");
-    }
-}
-
 void ImGui::Initialize(ImGuiContext* context)
 {
     ImGuiContext& g = *context;
@@ -4143,154 +3087,6 @@
     g.Initialized = false;
 }
 
-ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = 0; i != g.SettingsWindows.Size; i++)
-        if (g.SettingsWindows[i].ID == id)
-            return &g.SettingsWindows[i];
-    return NULL;
-}
-
-static ImGuiWindowSettings* CreateNewWindowSettings(const char* name)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsWindows.push_back(ImGuiWindowSettings());
-    ImGuiWindowSettings* settings = &g.SettingsWindows.back();
-    settings->Name = ImStrdup(name);
-    settings->ID = ImHash(name, 0);
-    return settings;
-}
-
-void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
-{
-    size_t file_data_size = 0;
-    char* file_data = (char*)ImFileLoadToMemory(ini_filename, "rb", &file_data_size);
-    if (!file_data)
-        return;
-    LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
-    ImGui::MemFree(file_data);
-}
-
-ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
-{
-    ImGuiContext& g = *GImGui;
-    const ImGuiID type_hash = ImHash(type_name, 0, 0);
-    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
-        if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
-            return &g.SettingsHandlers[handler_n];
-    return NULL;
-}
-
-// Zero-tolerance, no error reporting, cheap .ini parsing
-void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.Initialized);
-    IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
-
-    // For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
-    // For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
-    if (ini_size == 0)
-        ini_size = strlen(ini_data);
-    char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
-    char* buf_end = buf + ini_size;
-    memcpy(buf, ini_data, ini_size);
-    buf[ini_size] = 0;
-
-    void* entry_data = NULL;
-    ImGuiSettingsHandler* entry_handler = NULL;
-
-    char* line_end = NULL;
-    for (char* line = buf; line < buf_end; line = line_end + 1)
-    {
-        // Skip new lines markers, then find end of the line
-        while (*line == '\n' || *line == '\r')
-            line++;
-        line_end = line;
-        while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
-            line_end++;
-        line_end[0] = 0;
-
-        if (line[0] == '[' && line_end > line && line_end[-1] == ']')
-        {
-            // Parse "[Type][Name]". Note that 'Name' can itself contains [] characters, which is acceptable with the current format and parsing code.
-            line_end[-1] = 0;
-            const char* name_end = line_end - 1;
-            const char* type_start = line + 1;
-            char* type_end = (char*)(intptr_t)ImStrchrRange(type_start, name_end, ']');
-            const char* name_start = type_end ? ImStrchrRange(type_end + 1, name_end, '[') : NULL;
-            if (!type_end || !name_start)
-            {
-                name_start = type_start; // Import legacy entries that have no type
-                type_start = "Window";
-            }
-            else
-            {
-                *type_end = 0; // Overwrite first ']'
-                name_start++;  // Skip second '['
-            }
-            entry_handler = FindSettingsHandler(type_start);
-            entry_data = entry_handler ? entry_handler->ReadOpenFn(&g, entry_handler, name_start) : NULL;
-        }
-        else if (entry_handler != NULL && entry_data != NULL)
-        {
-            // Let type handler parse the line
-            entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
-        }
-    }
-    ImGui::MemFree(buf);
-    g.SettingsLoaded = true;
-}
-
-void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsDirtyTimer = 0.0f;
-    if (!ini_filename)
-        return;
-
-    size_t ini_data_size = 0;
-    const char* ini_data = SaveIniSettingsToMemory(&ini_data_size);
-    FILE* f = ImFileOpen(ini_filename, "wt");
-    if (!f)
-        return;
-    fwrite(ini_data, sizeof(char), ini_data_size, f);
-    fclose(f);
-}
-
-// Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer
-const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsDirtyTimer = 0.0f;
-    g.SettingsIniData.Buf.resize(0);
-    g.SettingsIniData.Buf.push_back(0);
-    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
-    {
-        ImGuiSettingsHandler* handler = &g.SettingsHandlers[handler_n];
-        handler->WriteAllFn(&g, handler, &g.SettingsIniData);
-    }
-    if (out_size)
-        *out_size = (size_t)g.SettingsIniData.size();
-    return g.SettingsIniData.c_str();
-}
-
-void ImGui::MarkIniSettingsDirty()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.SettingsDirtyTimer <= 0.0f)
-        g.SettingsDirtyTimer = g.IO.IniSavingRate;
-}
-
-void ImGui::MarkIniSettingsDirty(ImGuiWindow* window)
-{
-    ImGuiContext& g = *GImGui;
-    if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings))
-        if (g.SettingsDirtyTimer <= 0.0f)
-            g.SettingsDirtyTimer = g.IO.IniSavingRate;
-}
-
 // FIXME: Add a more explicit sort order in the window structure.
 static int IMGUI_CDECL ChildWindowComparer(const void* lhs, const void* rhs)
 {
@@ -4588,74 +3384,6 @@
     return text_display_end;
 }
 
-// Pass text data straight to log (without being displayed)
-void ImGui::LogText(const char* fmt, ...)
-{
-    ImGuiContext& g = *GImGui;
-    if (!g.LogEnabled)
-        return;
-
-    va_list args;
-    va_start(args, fmt);
-    if (g.LogFile)
-        vfprintf(g.LogFile, fmt, args);
-    else
-        g.LogClipboard.appendfv(fmt, args);
-    va_end(args);
-}
-
-// Internal version that takes a position to decide on newline placement and pad items according to their depth.
-// We split text into individual lines to add current tree level padding
-void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    if (!text_end)
-        text_end = ImGui::FindRenderedTextEnd(text, text_end);
-
-    const bool log_new_line = ref_pos && (ref_pos->y > window->DC.LogLinePosY + 1);
-    if (ref_pos)
-        window->DC.LogLinePosY = ref_pos->y;
-
-    const char* text_remaining = text;
-    if (g.LogStartDepth > window->DC.TreeDepth)  // Re-adjust padding if we have popped out of our starting depth
-        g.LogStartDepth = window->DC.TreeDepth;
-    const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth);
-    for (;;)
-    {
-        // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry.
-        const char* line_end = text_remaining;
-        while (line_end < text_end)
-            if (*line_end == '\n')
-                break;
-            else
-                line_end++;
-        if (line_end >= text_end)
-            line_end = NULL;
-
-        const bool is_first_line = (text == text_remaining);
-        bool is_last_line = false;
-        if (line_end == NULL)
-        {
-            is_last_line = true;
-            line_end = text_end;
-        }
-        if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
-        {
-            const int char_count = (int)(line_end - text_remaining);
-            if (log_new_line || !is_first_line)
-                ImGui::LogText(IM_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining);
-            else
-                ImGui::LogText(" %.*s", char_count, text_remaining);
-        }
-
-        if (is_last_line)
-            break;
-        text_remaining = line_end + 1;
-    }
-}
-
 // Internal ImGui functions to render text
 // RenderText***() functions calls ImDrawList::AddText() calls ImBitmapFont::RenderText()
 void ImGui::RenderText(ImVec2 pos, const char* text, const char* text_end, bool hide_text_after_hash)
@@ -5257,376 +3985,6 @@
     return ImRect(0.0f, 0.0f, g.IO.DisplaySize.x, g.IO.DisplaySize.y);
 }
 
-// Not exposed publicly as BeginTooltip() because bool parameters are evil. Let's see if other needs arise first.
-void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, bool override_previous_tooltip)
-{
-    ImGuiContext& g = *GImGui;
-    char window_name[16];
-    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
-    if (override_previous_tooltip)
-        if (ImGuiWindow* window = FindWindowByName(window_name))
-            if (window->Active)
-            {
-                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
-                window->Hidden = true;
-                window->HiddenFramesRegular = 1;
-                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
-            }
-    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoInputs|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoNav;
-    Begin(window_name, NULL, flags | extra_flags);
-}
-
-void ImGui::SetTooltipV(const char* fmt, va_list args)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.DragDropWithinSourceOrTarget)
-        BeginTooltip();
-    else
-        BeginTooltipEx(0, true);
-    TextV(fmt, args);
-    EndTooltip();
-}
-
-void ImGui::SetTooltip(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    SetTooltipV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::BeginTooltip()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.DragDropWithinSourceOrTarget)
-    {
-        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
-        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
-        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
-        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
-        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
-        SetNextWindowPos(tooltip_pos);
-        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
-        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
-        BeginTooltipEx(0, true);
-    }
-    else
-    {
-        BeginTooltipEx(0, false);
-    }
-}
-
-void ImGui::EndTooltip()
-{
-    IM_ASSERT(GetCurrentWindowRead()->Flags & ImGuiWindowFlags_Tooltip);   // Mismatched BeginTooltip()/EndTooltip() calls
-    End();
-}
-
-// Mark popup as open (toggle toward open state).
-// Popups are closed when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
-// Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
-// One open popup per level of the popup hierarchy (NB: when assigning we reset the Window member of ImGuiPopupRef to NULL)
-void ImGui::OpenPopupEx(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* parent_window = g.CurrentWindow;
-    int current_stack_size = g.CurrentPopupStack.Size;
-    ImGuiPopupRef popup_ref; // Tagged as new ref as Window will be set back to NULL if we write this into OpenPopupStack.
-    popup_ref.PopupId = id;
-    popup_ref.Window = NULL;
-    popup_ref.ParentWindow = parent_window;
-    popup_ref.OpenFrameCount = g.FrameCount;
-    popup_ref.OpenParentId = parent_window->IDStack.back();
-    popup_ref.OpenMousePos = g.IO.MousePos;
-    popup_ref.OpenPopupPos = NavCalcPreferredRefPos();
-
-    //printf("[%05d] OpenPopupEx(0x%08X)\n", g.FrameCount, id);
-    if (g.OpenPopupStack.Size < current_stack_size + 1)
-    {
-        g.OpenPopupStack.push_back(popup_ref);
-    }
-    else
-    {
-        // Gently handle the user mistakenly calling OpenPopup() every frame. It is a programming mistake! However, if we were to run the regular code path, the ui
-        // would become completely unusable because the popup will always be in hidden-while-calculating-size state _while_ claiming focus. Which would be a very confusing
-        // situation for the programmer. Instead, we silently allow the popup to proceed, it will keep reappearing and the programming error will be more obvious to understand.
-        if (g.OpenPopupStack[current_stack_size].PopupId == id && g.OpenPopupStack[current_stack_size].OpenFrameCount == g.FrameCount - 1)
-        {
-            g.OpenPopupStack[current_stack_size].OpenFrameCount = popup_ref.OpenFrameCount;
-        }
-        else
-        {
-            // Close child popups if any, then flag popup for open/reopen
-            g.OpenPopupStack.resize(current_stack_size + 1);
-            g.OpenPopupStack[current_stack_size] = popup_ref;
-        }
-
-        // When reopening a popup we first refocus its parent, otherwise if its parent is itself a popup it would get closed by ClosePopupsOverWindow().
-        // This is equivalent to what ClosePopupToLevel() does.
-        //if (g.OpenPopupStack[current_stack_size].PopupId == id)
-        //    FocusWindow(parent_window);
-    }
-}
-
-void ImGui::OpenPopup(const char* str_id)
-{
-    ImGuiContext& g = *GImGui;
-    OpenPopupEx(g.CurrentWindow->GetID(str_id));
-}
-
-void ImGui::ClosePopupsOverWindow(ImGuiWindow* ref_window)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.OpenPopupStack.empty())
-        return;
-
-    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
-    // Don't close our own child popup windows.
-    int n = 0;
-    if (ref_window)
-    {
-        for (n = 0; n < g.OpenPopupStack.Size; n++)
-        {
-            ImGuiPopupRef& popup = g.OpenPopupStack[n];
-            if (!popup.Window)
-                continue;
-            IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
-            if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
-                continue;
-
-            // Trim the stack if popups are not direct descendant of the reference window (which is often the NavWindow)
-            bool has_focus = false;
-            for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
-                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
-            if (!has_focus)
-                break;
-        }
-    }
-    if (n < g.OpenPopupStack.Size) // This test is not required but it allows to set a convenient breakpoint on the block below
-        ClosePopupToLevel(n);
-}
-
-ImGuiWindow* ImGui::GetFrontMostPopupModal()
-{
-    ImGuiContext& g = *GImGui;
-    for (int n = g.OpenPopupStack.Size-1; n >= 0; n--)
-        if (ImGuiWindow* popup = g.OpenPopupStack.Data[n].Window)
-            if (popup->Flags & ImGuiWindowFlags_Modal)
-                return popup;
-    return NULL;
-}
-
-void ImGui::ClosePopupToLevel(int remaining)
-{
-    IM_ASSERT(remaining >= 0);
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* focus_window = (remaining > 0) ? g.OpenPopupStack[remaining-1].Window : g.OpenPopupStack[0].ParentWindow;
-    if (g.NavLayer == 0)
-        focus_window = NavRestoreLastChildNavWindow(focus_window);
-    FocusWindow(focus_window);
-    focus_window->DC.NavHideHighlightOneFrame = true;
-    g.OpenPopupStack.resize(remaining);
-}
-
-void ImGui::ClosePopup(ImGuiID id)
-{
-    if (!IsPopupOpen(id))
-        return;
-    ImGuiContext& g = *GImGui;
-    ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-}
-
-// Close the popup we have begin-ed into.
-void ImGui::CloseCurrentPopup()
-{
-    ImGuiContext& g = *GImGui;
-    int popup_idx = g.CurrentPopupStack.Size - 1;
-    if (popup_idx < 0 || popup_idx >= g.OpenPopupStack.Size || g.CurrentPopupStack[popup_idx].PopupId != g.OpenPopupStack[popup_idx].PopupId)
-        return;
-    while (popup_idx > 0 && g.OpenPopupStack[popup_idx].Window && (g.OpenPopupStack[popup_idx].Window->Flags & ImGuiWindowFlags_ChildMenu))
-        popup_idx--;
-    ClosePopupToLevel(popup_idx);
-}
-
-bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (!IsPopupOpen(id))
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-
-    char name[20];
-    if (extra_flags & ImGuiWindowFlags_ChildMenu)
-        ImFormatString(name, IM_ARRAYSIZE(name), "##Menu_%02d", g.CurrentPopupStack.Size);    // Recycle windows based on depth
-    else
-        ImFormatString(name, IM_ARRAYSIZE(name), "##Popup_%08x", id); // Not recycling, so we can close/open during the same frame
-
-    bool is_open = Begin(name, NULL, extra_flags | ImGuiWindowFlags_Popup);
-    if (!is_open) // NB: Begin can return false when the popup is completely clipped (e.g. zero size display)
-        EndPopup();
-
-    return is_open;
-}
-
-bool ImGui::BeginPopup(const char* str_id, ImGuiWindowFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.OpenPopupStack.Size <= g.CurrentPopupStack.Size) // Early out for performance
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-    return BeginPopupEx(g.CurrentWindow->GetID(str_id), flags|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::IsPopupOpen(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == id;
-}
-
-bool ImGui::IsPopupOpen(const char* str_id)
-{
-    ImGuiContext& g = *GImGui;
-    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == g.CurrentWindow->GetID(str_id);
-}
-
-bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    const ImGuiID id = window->GetID(name);
-    if (!IsPopupOpen(id))
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-
-    // Center modal windows by default
-    // FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
-    if (g.NextWindowData.PosCond == 0)
-        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
-
-    bool is_open = Begin(name, p_open, flags | ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
-    if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-    {
-        EndPopup();
-        if (is_open)
-            ClosePopup(id);
-        return false;
-    }
-
-    return is_open;
-}
-
-void ImGui::NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, const ImRect& bb_rel, ImGuiNavMoveFlags move_flags)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_None);
-    ImGui::NavMoveRequestCancel();
-    g.NavMoveDir = move_dir;
-    g.NavMoveClipDir = clip_dir;
-    g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
-    g.NavMoveRequestFlags = move_flags;
-    g.NavWindow->NavRectRel[g.NavLayer] = bb_rel;
-}
-
-void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.NavWindow != window || !NavMoveRequestButNoResultYet() || g.NavMoveRequestForward != ImGuiNavForward_None || g.NavLayer != 0)
-        return;
-    IM_ASSERT(move_flags != 0); // No points calling this with no wrapping
-    ImRect bb_rel = window->NavRectRel[0];
-
-    ImGuiDir clip_dir = g.NavMoveDir;
-    if (g.NavMoveDir == ImGuiDir_Left && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
-    {
-        bb_rel.Min.x = bb_rel.Max.x = ImMax(window->SizeFull.x, window->SizeContents.x) - window->Scroll.x;
-        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(-bb_rel.GetHeight()); clip_dir = ImGuiDir_Up; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Right && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
-    {
-        bb_rel.Min.x = bb_rel.Max.x = -window->Scroll.x;
-        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(+bb_rel.GetHeight()); clip_dir = ImGuiDir_Down; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Up && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
-    {
-        bb_rel.Min.y = bb_rel.Max.y = ImMax(window->SizeFull.y, window->SizeContents.y) - window->Scroll.y;
-        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(-bb_rel.GetWidth()); clip_dir = ImGuiDir_Left; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Down && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
-    {
-        bb_rel.Min.y = bb_rel.Max.y = -window->Scroll.y;
-        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(+bb_rel.GetWidth()); clip_dir = ImGuiDir_Right; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-}
-
-void ImGui::EndPopup()
-{
-    ImGuiContext& g = *GImGui; (void)g;
-    IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup);  // Mismatched BeginPopup()/EndPopup() calls
-    IM_ASSERT(g.CurrentPopupStack.Size > 0);
-
-    // Make all menus and popups wrap around for now, may need to expose that policy.
-    NavMoveRequestTryWrapping(g.CurrentWindow, ImGuiNavMoveFlags_LoopY);
-
-    End();
-}
-
-bool ImGui::OpenPopupOnItemClick(const char* str_id, int mouse_button)
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-    {
-        ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
-        IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
-        OpenPopupEx(id);
-        return true;
-    }
-    return false;
-}
-
-// This is a helper to handle the simplest case of associating one named popup to one given widget.
-// You may want to handle this on user side if you have specific needs (e.g. tweaking IsItemHovered() parameters).
-// You can pass a NULL str_id to use the identifier of the last item.
-bool ImGui::BeginPopupContextItem(const char* str_id, int mouse_button)
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
-    IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
-    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-        OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::BeginPopupContextWindow(const char* str_id, int mouse_button, bool also_over_items)
-{
-    if (!str_id)
-        str_id = "window_context";
-    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
-    if (IsMouseReleased(mouse_button) && IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-        if (also_over_items || !IsAnyItemHovered())
-            OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::BeginPopupContextVoid(const char* str_id, int mouse_button)
-{
-    if (!str_id)
-        str_id = "void_context";
-    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
-    if (IsMouseReleased(mouse_button) && !IsWindowHovered(ImGuiHoveredFlags_AnyWindow))
-        OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
 static bool ImGui::BeginChildEx(const char* name, ImGuiID id, const ImVec2& size_arg, bool border, ImGuiWindowFlags flags)
 {
     ImGuiContext& g = *GImGui;
@@ -5670,7 +4028,6 @@
         SetActiveID(id+1, child_window); // Steal ActiveId with a dummy id so that key-press won't activate child item
         g.ActiveIdSource = ImGuiInputSource_Nav;
     }
-
     return ret;
 }
 
@@ -5761,112 +4118,6 @@
     IM_ASSERT(p_backup == window->DC.StackSizesBackup + IM_ARRAYSIZE(window->DC.StackSizesBackup));
 }
 
-ImRect ImGui::GetWindowAllowedExtentRect(ImGuiWindow*)
-{
-    ImVec2 padding = GImGui->Style.DisplaySafeAreaPadding;
-    ImRect r_screen = GetViewportRect();
-    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
-    return r_screen;
-}
-
-// r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
-// r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
-ImVec2 ImGui::FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy)
-{
-    ImVec2 base_pos_clamped = ImClamp(ref_pos, r_outer.Min, r_outer.Max - size);
-    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
-    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
-
-    // Combo Box policy (we want a connecting edge)
-    if (policy == ImGuiPopupPositionPolicy_ComboBox)
-    {
-        const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Down, ImGuiDir_Right, ImGuiDir_Left, ImGuiDir_Up };
-        for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
-        {
-            const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
-            if (n != -1 && dir == *last_dir) // Already tried this direction?
-                continue;
-            ImVec2 pos;
-            if (dir == ImGuiDir_Down)  pos = ImVec2(r_avoid.Min.x, r_avoid.Max.y);          // Below, Toward Right (default)
-            if (dir == ImGuiDir_Right) pos = ImVec2(r_avoid.Min.x, r_avoid.Min.y - size.y); // Above, Toward Right
-            if (dir == ImGuiDir_Left)  pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Max.y); // Below, Toward Left
-            if (dir == ImGuiDir_Up)    pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Min.y - size.y); // Above, Toward Left
-            if (!r_outer.Contains(ImRect(pos, pos + size)))
-                continue;
-            *last_dir = dir;
-            return pos;
-        }
-    }
-
-    // Default popup policy
-    const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
-    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
-    {
-        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
-        if (n != -1 && dir == *last_dir) // Already tried this direction?
-            continue;
-        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
-        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
-        if (avail_w < size.x || avail_h < size.y)
-            continue;
-        ImVec2 pos;
-        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
-        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
-        *last_dir = dir;
-        return pos;
-    }
-
-    // Fallback, try to keep within display
-    *last_dir = ImGuiDir_None;
-    ImVec2 pos = ref_pos;
-    pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
-    pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
-    return pos;
-}
-
-ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
-{
-    ImGuiContext& g = *GImGui;
-
-    ImRect r_outer = GetWindowAllowedExtentRect(window);
-    if (window->Flags & ImGuiWindowFlags_ChildMenu)
-    {
-        // Child menus typically request _any_ position within the parent menu item, and then our FindBestWindowPosForPopup() function will move the new menu outside the parent bounds.
-        // This is how we end up with child menus appearing (most-commonly) on the right of the parent menu.
-        IM_ASSERT(g.CurrentWindow == window);
-        ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.Size - 2];
-        float horizontal_overlap = g.Style.ItemSpacing.x;       // We want some overlap to convey the relative depth of each menu (currently the amount of overlap is hard-coded to style.ItemSpacing.x).
-        ImRect r_avoid;
-        if (parent_window->DC.MenuBarAppending)
-            r_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
-        else
-            r_avoid = ImRect(parent_window->Pos.x + horizontal_overlap, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - horizontal_overlap - parent_window->ScrollbarSizes.x, FLT_MAX);
-        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-    }
-    if (window->Flags & ImGuiWindowFlags_Popup)
-    {
-        ImRect r_avoid = ImRect(window->Pos.x - 1, window->Pos.y - 1, window->Pos.x + 1, window->Pos.y + 1);
-        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-    }
-    if (window->Flags & ImGuiWindowFlags_Tooltip)
-    {
-        // Position tooltip (always follows mouse)
-        float sc = g.Style.MouseCursorScale;
-        ImVec2 ref_pos = NavCalcPreferredRefPos();
-        ImRect r_avoid;
-        if (!g.NavDisableHighlight && g.NavDisableMouseHover && !(g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos))
-            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 16, ref_pos.y + 8);
-        else
-            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24 * sc, ref_pos.y + 24 * sc); // FIXME: Hard-coded based on mouse cursor shape expectation. Exact dimension not very important.
-        ImVec2 pos = FindBestWindowPosForPopupEx(ref_pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-        if (window->AutoPosLastDirection == ImGuiDir_None)
-            pos = ref_pos + ImVec2(2, 2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
-        return pos;
-    }
-    IM_ASSERT(0);
-    return window->Pos;
-}
-
 static void SetWindowConditionAllowFlags(ImGuiWindow* window, ImGuiCond flags, bool enabled)
 {
     window->SetWindowPosAllowFlags       = enabled ? (window->SetWindowPosAllowFlags       | flags) : (window->SetWindowPosAllowFlags       & ~flags);
@@ -6843,116 +5094,6 @@
     SetCurrentWindow(g.CurrentWindowStack.empty() ? NULL : g.CurrentWindowStack.back());
 }
 
-// Vertical scrollbar
-// The entire piece of code below is rather confusing because:
-// - We handle absolute seeking (when first clicking outside the grab) and relative manipulation (afterward or when clicking inside the grab)
-// - We store values as normalized ratio and in a form that allows the window content to change while we are holding on a scrollbar
-// - We handle both horizontal and vertical scrollbars, which makes the terminology not ideal.
-void ImGui::Scrollbar(ImGuiLayoutType direction)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    const bool horizontal = (direction == ImGuiLayoutType_Horizontal);
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(horizontal ? "#SCROLLX" : "#SCROLLY");
-
-    // Render background
-    bool other_scrollbar = (horizontal ? window->ScrollbarY : window->ScrollbarX);
-    float other_scrollbar_size_w = other_scrollbar ? style.ScrollbarSize : 0.0f;
-    const ImRect window_rect = window->Rect();
-    const float border_size = window->WindowBorderSize;
-    ImRect bb = horizontal
-        ? ImRect(window->Pos.x + border_size, window_rect.Max.y - style.ScrollbarSize, window_rect.Max.x - other_scrollbar_size_w - border_size, window_rect.Max.y - border_size)
-        : ImRect(window_rect.Max.x - style.ScrollbarSize, window->Pos.y + border_size, window_rect.Max.x - border_size, window_rect.Max.y - other_scrollbar_size_w - border_size);
-    if (!horizontal)
-        bb.Min.y += window->TitleBarHeight() + ((window->Flags & ImGuiWindowFlags_MenuBar) ? window->MenuBarHeight() : 0.0f);
-    if (bb.GetWidth() <= 0.0f || bb.GetHeight() <= 0.0f)
-        return;
-
-    int window_rounding_corners;
-    if (horizontal)
-        window_rounding_corners = ImDrawCornerFlags_BotLeft | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
-    else
-        window_rounding_corners = (((window->Flags & ImGuiWindowFlags_NoTitleBar) && !(window->Flags & ImGuiWindowFlags_MenuBar)) ? ImDrawCornerFlags_TopRight : 0) | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
-    window->DrawList->AddRectFilled(bb.Min, bb.Max, GetColorU32(ImGuiCol_ScrollbarBg), window->WindowRounding, window_rounding_corners);
-    bb.Expand(ImVec2(-ImClamp((float)(int)((bb.Max.x - bb.Min.x - 2.0f) * 0.5f), 0.0f, 3.0f), -ImClamp((float)(int)((bb.Max.y - bb.Min.y - 2.0f) * 0.5f), 0.0f, 3.0f)));
-
-    // V denote the main, longer axis of the scrollbar (= height for a vertical scrollbar)
-    float scrollbar_size_v = horizontal ? bb.GetWidth() : bb.GetHeight();
-    float scroll_v = horizontal ? window->Scroll.x : window->Scroll.y;
-    float win_size_avail_v = (horizontal ? window->SizeFull.x : window->SizeFull.y) - other_scrollbar_size_w;
-    float win_size_contents_v = horizontal ? window->SizeContents.x : window->SizeContents.y;
-
-    // Calculate the height of our grabbable box. It generally represent the amount visible (vs the total scrollable amount)
-    // But we maintain a minimum size in pixel to allow for the user to still aim inside.
-    IM_ASSERT(ImMax(win_size_contents_v, win_size_avail_v) > 0.0f); // Adding this assert to check if the ImMax(XXX,1.0f) is still needed. PLEASE CONTACT ME if this triggers.
-    const float win_size_v = ImMax(ImMax(win_size_contents_v, win_size_avail_v), 1.0f);
-    const float grab_h_pixels = ImClamp(scrollbar_size_v * (win_size_avail_v / win_size_v), style.GrabMinSize, scrollbar_size_v);
-    const float grab_h_norm = grab_h_pixels / scrollbar_size_v;
-
-    // Handle input right away. None of the code of Begin() is relying on scrolling position before calling Scrollbar().
-    bool held = false;
-    bool hovered = false;
-    const bool previously_held = (g.ActiveId == id);
-    ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_NoNavFocus);
-
-    float scroll_max = ImMax(1.0f, win_size_contents_v - win_size_avail_v);
-    float scroll_ratio = ImSaturate(scroll_v / scroll_max);
-    float grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
-    if (held && grab_h_norm < 1.0f)
-    {
-        float scrollbar_pos_v = horizontal ? bb.Min.x : bb.Min.y;
-        float mouse_pos_v = horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
-        float* click_delta_to_grab_center_v = horizontal ? &g.ScrollbarClickDeltaToGrabCenter.x : &g.ScrollbarClickDeltaToGrabCenter.y;
-
-        // Click position in scrollbar normalized space (0.0f->1.0f)
-        const float clicked_v_norm = ImSaturate((mouse_pos_v - scrollbar_pos_v) / scrollbar_size_v);
-        SetHoveredID(id);
-
-        bool seek_absolute = false;
-        if (!previously_held)
-        {
-            // On initial click calculate the distance between mouse and the center of the grab
-            if (clicked_v_norm >= grab_v_norm && clicked_v_norm <= grab_v_norm + grab_h_norm)
-            {
-                *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
-            }
-            else
-            {
-                seek_absolute = true;
-                *click_delta_to_grab_center_v = 0.0f;
-            }
-        }
-
-        // Apply scroll
-        // It is ok to modify Scroll here because we are being called in Begin() after the calculation of SizeContents and before setting up our starting position
-        const float scroll_v_norm = ImSaturate((clicked_v_norm - *click_delta_to_grab_center_v - grab_h_norm*0.5f) / (1.0f - grab_h_norm));
-        scroll_v = (float)(int)(0.5f + scroll_v_norm * scroll_max);//(win_size_contents_v - win_size_v));
-        if (horizontal)
-            window->Scroll.x = scroll_v;
-        else
-            window->Scroll.y = scroll_v;
-
-        // Update values for rendering
-        scroll_ratio = ImSaturate(scroll_v / scroll_max);
-        grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
-
-        // Update distance to grab now that we have seeked and saturated
-        if (seek_absolute)
-            *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
-    }
-
-    // Render
-    const ImU32 grab_col = GetColorU32(held ? ImGuiCol_ScrollbarGrabActive : hovered ? ImGuiCol_ScrollbarGrabHovered : ImGuiCol_ScrollbarGrab);
-    ImRect grab_rect;
-    if (horizontal)
-        grab_rect = ImRect(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm), bb.Min.y, ImMin(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm) + grab_h_pixels, window_rect.Max.x), bb.Max.y);
-    else
-        grab_rect = ImRect(bb.Min.x, ImLerp(bb.Min.y, bb.Max.y, grab_v_norm), bb.Max.x, ImMin(ImLerp(bb.Min.y, bb.Max.y, grab_v_norm) + grab_h_pixels, window_rect.Max.y));
-    window->DrawList->AddRectFilled(grab_rect.Min, grab_rect.Max, grab_col, style.ScrollbarRounding);
-}
-
 void ImGui::BringWindowToFront(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -7871,177 +6012,6 @@
     return window->DC.StateStorage;
 }
 
-void ImGui::TextV(const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const char* text_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    TextUnformatted(g.TempBuffer, text_end);
-}
-
-void ImGui::Text(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextColoredV(const ImVec4& col, const char* fmt, va_list args)
-{
-    PushStyleColor(ImGuiCol_Text, col);
-    TextV(fmt, args);
-    PopStyleColor();
-}
-
-void ImGui::TextColored(const ImVec4& col, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextColoredV(col, fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextDisabledV(const char* fmt, va_list args)
-{
-    PushStyleColor(ImGuiCol_Text, GImGui->Style.Colors[ImGuiCol_TextDisabled]);
-    TextV(fmt, args);
-    PopStyleColor();
-}
-
-void ImGui::TextDisabled(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextDisabledV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextWrappedV(const char* fmt, va_list args)
-{
-    bool need_wrap = (GImGui->CurrentWindow->DC.TextWrapPos < 0.0f);    // Keep existing wrap position is one ia already set
-    if (need_wrap) PushTextWrapPos(0.0f);
-    TextV(fmt, args);
-    if (need_wrap) PopTextWrapPos();
-}
-
-void ImGui::TextWrapped(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextWrappedV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextUnformatted(const char* text, const char* text_end)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(text != NULL);
-    const char* text_begin = text;
-    if (text_end == NULL)
-        text_end = text + strlen(text); // FIXME-OPT
-
-    const ImVec2 text_pos(window->DC.CursorPos.x, window->DC.CursorPos.y + window->DC.CurrentLineTextBaseOffset);
-    const float wrap_pos_x = window->DC.TextWrapPos;
-    const bool wrap_enabled = wrap_pos_x >= 0.0f;
-    if (text_end - text > 2000 && !wrap_enabled)
-    {
-        // Long text!
-        // Perform manual coarse clipping to optimize for long multi-line text
-        // From this point we will only compute the width of lines that are visible. Optimization only available when word-wrapping is disabled.
-        // We also don't vertically center the text within the line full height, which is unlikely to matter because we are likely the biggest and only item on the line.
-        const char* line = text;
-        const float line_height = GetTextLineHeight();
-        const ImRect clip_rect = window->ClipRect;
-        ImVec2 text_size(0,0);
-
-        if (text_pos.y <= clip_rect.Max.y)
-        {
-            ImVec2 pos = text_pos;
-
-            // Lines to skip (can't skip when logging text)
-            if (!g.LogEnabled)
-            {
-                int lines_skippable = (int)((clip_rect.Min.y - text_pos.y) / line_height);
-                if (lines_skippable > 0)
-                {
-                    int lines_skipped = 0;
-                    while (line < text_end && lines_skipped < lines_skippable)
-                    {
-                        const char* line_end = strchr(line, '\n');
-                        if (!line_end)
-                            line_end = text_end;
-                        line = line_end + 1;
-                        lines_skipped++;
-                    }
-                    pos.y += lines_skipped * line_height;
-                }
-            }
-
-            // Lines to render
-            if (line < text_end)
-            {
-                ImRect line_rect(pos, pos + ImVec2(FLT_MAX, line_height));
-                while (line < text_end)
-                {
-                    const char* line_end = strchr(line, '\n');
-                    if (IsClippedEx(line_rect, 0, false))
-                        break;
-
-                    const ImVec2 line_size = CalcTextSize(line, line_end, false);
-                    text_size.x = ImMax(text_size.x, line_size.x);
-                    RenderText(pos, line, line_end, false);
-                    if (!line_end)
-                        line_end = text_end;
-                    line = line_end + 1;
-                    line_rect.Min.y += line_height;
-                    line_rect.Max.y += line_height;
-                    pos.y += line_height;
-                }
-
-                // Count remaining lines
-                int lines_skipped = 0;
-                while (line < text_end)
-                {
-                    const char* line_end = strchr(line, '\n');
-                    if (!line_end)
-                        line_end = text_end;
-                    line = line_end + 1;
-                    lines_skipped++;
-                }
-                pos.y += lines_skipped * line_height;
-            }
-
-            text_size.y += (pos - text_pos).y;
-        }
-
-        ImRect bb(text_pos, text_pos + text_size);
-        ItemSize(bb);
-        ItemAdd(bb, 0);
-    }
-    else
-    {
-        const float wrap_width = wrap_enabled ? CalcWrapWidthForPos(window->DC.CursorPos, wrap_pos_x) : 0.0f;
-        const ImVec2 text_size = CalcTextSize(text_begin, text_end, false, wrap_width);
-
-        // Account of baseline offset
-        ImRect bb(text_pos, text_pos + text_size);
-        ItemSize(text_size);
-        if (!ItemAdd(bb, 0))
-            return;
-
-        // Render (we don't hide text after ## in this end-user function)
-        RenderTextWrapped(bb.Min, text_begin, text_end, wrap_width);
-    }
-}
-
 void ImGui::AlignTextToFramePadding()
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -8053,864 +6023,6 @@
     window->DC.CurrentLineTextBaseOffset = ImMax(window->DC.CurrentLineTextBaseOffset, g.Style.FramePadding.y);
 }
 
-// Add a label+text combo aligned to other label+value widgets
-void ImGui::LabelTextV(const char* label, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect value_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2));
-    const ImRect total_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w + (label_size.x > 0.0f ? style.ItemInnerSpacing.x : 0.0f), style.FramePadding.y*2) + label_size);
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, 0))
-        return;
-
-    // Render
-    const char* value_text_begin = &g.TempBuffer[0];
-    const char* value_text_end = value_text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    RenderTextClipped(value_bb.Min, value_bb.Max, value_text_begin, value_text_end, NULL, ImVec2(0.0f,0.5f));
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(value_bb.Max.x + style.ItemInnerSpacing.x, value_bb.Min.y + style.FramePadding.y), label);
-}
-
-void ImGui::LabelText(const char* label, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    LabelTextV(label, fmt, args);
-    va_end(args);
-}
-
-bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool* out_held, ImGuiButtonFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-
-    if (flags & ImGuiButtonFlags_Disabled)
-    {
-        if (out_hovered) *out_hovered = false;
-        if (out_held) *out_held = false;
-        if (g.ActiveId == id) ClearActiveID();
-        return false;
-    }
-
-    // Default behavior requires click+release on same spot
-    if ((flags & (ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnClick | ImGuiButtonFlags_PressedOnRelease | ImGuiButtonFlags_PressedOnDoubleClick)) == 0)
-        flags |= ImGuiButtonFlags_PressedOnClickRelease;
-
-    ImGuiWindow* backup_hovered_window = g.HoveredWindow;
-    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
-        g.HoveredWindow = window;
-
-    bool pressed = false;
-    bool hovered = ItemHoverable(bb, id);
-
-    // Drag source doesn't report as hovered
-    if (hovered && g.DragDropActive && g.DragDropPayload.SourceId == id && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoDisableHover))
-        hovered = false;
-
-    // Special mode for Drag and Drop where holding button pressed for a long time while dragging another item triggers the button
-    if (g.DragDropActive && (flags & ImGuiButtonFlags_PressedOnDragDropHold) && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoHoldToOpenOthers))
-        if (IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem))
-        {
-            hovered = true;
-            SetHoveredID(id);
-            if (CalcTypematicPressedRepeatAmount(g.HoveredIdTimer + 0.0001f, g.HoveredIdTimer + 0.0001f - g.IO.DeltaTime, 0.01f, 0.70f)) // FIXME: Our formula for CalcTypematicPressedRepeatAmount() is fishy
-            {
-                pressed = true;
-                FocusWindow(window);
-            }
-        }
-
-    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
-        g.HoveredWindow = backup_hovered_window;
-
-    // AllowOverlap mode (rarely used) requires previous frame HoveredId to be null or to match. This allows using patterns where a later submitted widget overlaps a previous one.
-    if (hovered && (flags & ImGuiButtonFlags_AllowItemOverlap) && (g.HoveredIdPreviousFrame != id && g.HoveredIdPreviousFrame != 0))
-        hovered = false;
-
-    // Mouse
-    if (hovered)
-    {
-        if (!(flags & ImGuiButtonFlags_NoKeyModifiers) || (!g.IO.KeyCtrl && !g.IO.KeyShift && !g.IO.KeyAlt))
-        {
-            //                        | CLICKING        | HOLDING with ImGuiButtonFlags_Repeat
-            // PressedOnClickRelease  |  <on release>*  |  <on repeat> <on repeat> .. (NOT on release)  <-- MOST COMMON! (*) only if both click/release were over bounds
-            // PressedOnClick         |  <on click>     |  <on click> <on repeat> <on repeat> ..
-            // PressedOnRelease       |  <on release>   |  <on repeat> <on repeat> .. (NOT on release)
-            // PressedOnDoubleClick   |  <on dclick>    |  <on dclick> <on repeat> <on repeat> ..
-            // FIXME-NAV: We don't honor those different behaviors.
-            if ((flags & ImGuiButtonFlags_PressedOnClickRelease) && g.IO.MouseClicked[0])
-            {
-                SetActiveID(id, window);
-                if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                    SetFocusID(id, window);
-                FocusWindow(window);
-            }
-            if (((flags & ImGuiButtonFlags_PressedOnClick) && g.IO.MouseClicked[0]) || ((flags & ImGuiButtonFlags_PressedOnDoubleClick) && g.IO.MouseDoubleClicked[0]))
-            {
-                pressed = true;
-                if (flags & ImGuiButtonFlags_NoHoldingActiveID)
-                    ClearActiveID();
-                else
-                    SetActiveID(id, window); // Hold on ID
-                FocusWindow(window);
-            }
-            if ((flags & ImGuiButtonFlags_PressedOnRelease) && g.IO.MouseReleased[0])
-            {
-                if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
-                    pressed = true;
-                ClearActiveID();
-            }
-
-            // 'Repeat' mode acts when held regardless of _PressedOn flags (see table above).
-            // Relies on repeat logic of IsMouseClicked() but we may as well do it ourselves if we end up exposing finer RepeatDelay/RepeatRate settings.
-            if ((flags & ImGuiButtonFlags_Repeat) && g.ActiveId == id && g.IO.MouseDownDuration[0] > 0.0f && IsMouseClicked(0, true))
-                pressed = true;
-        }
-
-        if (pressed)
-            g.NavDisableHighlight = true;
-    }
-
-    // Gamepad/Keyboard navigation
-    // We report navigated item as hovered but we don't set g.HoveredId to not interfere with mouse.
-    if (g.NavId == id && !g.NavDisableHighlight && g.NavDisableMouseHover && (g.ActiveId == 0 || g.ActiveId == id || g.ActiveId == window->MoveId))
-        hovered = true;
-
-    if (g.NavActivateDownId == id)
-    {
-        bool nav_activated_by_code = (g.NavActivateId == id);
-        bool nav_activated_by_inputs = IsNavInputPressed(ImGuiNavInput_Activate, (flags & ImGuiButtonFlags_Repeat) ? ImGuiInputReadMode_Repeat : ImGuiInputReadMode_Pressed);
-        if (nav_activated_by_code || nav_activated_by_inputs)
-            pressed = true;
-        if (nav_activated_by_code || nav_activated_by_inputs || g.ActiveId == id)
-        {
-            // Set active id so it can be queried by user via IsItemActive(), equivalent of holding the mouse button.
-            g.NavActivateId = id; // This is so SetActiveId assign a Nav source
-            SetActiveID(id, window);
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                SetFocusID(id, window);
-            g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right) | (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        }
-    }
-
-    bool held = false;
-    if (g.ActiveId == id)
-    {
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
-        {
-            if (g.ActiveIdIsJustActivated)
-                g.ActiveIdClickOffset = g.IO.MousePos - bb.Min;
-            if (g.IO.MouseDown[0])
-            {
-                held = true;
-            }
-            else
-            {
-                if (hovered && (flags & ImGuiButtonFlags_PressedOnClickRelease))
-                    if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
-                        if (!g.DragDropActive)
-                            pressed = true;
-                ClearActiveID();
-            }
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                g.NavDisableHighlight = true;
-        }
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-        {
-            if (g.NavActivateDownId != id)
-                ClearActiveID();
-        }
-    }
-
-    if (out_hovered) *out_hovered = hovered;
-    if (out_held) *out_held = held;
-
-    return pressed;
-}
-
-bool ImGui::ButtonEx(const char* label, const ImVec2& size_arg, ImGuiButtonFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    ImVec2 pos = window->DC.CursorPos;
-    if ((flags & ImGuiButtonFlags_AlignTextBaseLine) && style.FramePadding.y < window->DC.CurrentLineTextBaseOffset) // Try to vertically align buttons that are smaller/have no padding so that text baseline matches (bit hacky, since it shouldn't be a flag)
-        pos.y += window->DC.CurrentLineTextBaseOffset - style.FramePadding.y;
-    ImVec2 size = CalcItemSize(size_arg, label_size.x + style.FramePadding.x * 2.0f, label_size.y + style.FramePadding.y * 2.0f);
-
-    const ImRect bb(pos, pos + size);
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
-        flags |= ImGuiButtonFlags_Repeat;
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
-    if (pressed)
-        MarkItemEdited(id);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, style.FrameRounding);
-    RenderTextClipped(bb.Min + style.FramePadding, bb.Max - style.FramePadding, label, NULL, &label_size, style.ButtonTextAlign, &bb);
-
-    // Automatically close popups
-    //if (pressed && !(flags & ImGuiButtonFlags_DontClosePopups) && (window->Flags & ImGuiWindowFlags_Popup))
-    //    CloseCurrentPopup();
-
-    return pressed;
-}
-
-bool ImGui::Button(const char* label, const ImVec2& size_arg)
-{
-    return ButtonEx(label, size_arg, 0);
-}
-
-// Small buttons fits within text without additional vertical spacing.
-bool ImGui::SmallButton(const char* label)
-{
-    ImGuiContext& g = *GImGui;
-    float backup_padding_y = g.Style.FramePadding.y;
-    g.Style.FramePadding.y = 0.0f;
-    bool pressed = ButtonEx(label, ImVec2(0,0), ImGuiButtonFlags_AlignTextBaseLine);
-    g.Style.FramePadding.y = backup_padding_y;
-    return pressed;
-}
-
-bool ImGui::ArrowButtonEx(const char* str_id, ImGuiDir dir, ImVec2 size, ImGuiButtonFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiID id = window->GetID(str_id);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const float default_size = GetFrameHeight();
-    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
-        flags |= ImGuiButtonFlags_Repeat;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, g.Style.FrameRounding);
-    RenderArrow(bb.Min + ImVec2(ImMax(0.0f, size.x - g.FontSize - g.Style.FramePadding.x), ImMax(0.0f, size.y - g.FontSize - g.Style.FramePadding.y)), dir);
-
-    return pressed;
-}
-
-bool ImGui::ArrowButton(const char* str_id, ImGuiDir dir)
-{
-    float sz = GetFrameHeight();
-    return ArrowButtonEx(str_id, dir, ImVec2(sz, sz), 0);
-}
-
-// Tip: use ImGui::PushID()/PopID() to push indices or pointers in the ID stack.
-// Then you can keep 'str_id' empty or the same for all your buttons (instead of creating a string based on a non-string id)
-bool ImGui::InvisibleButton(const char* str_id, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    // Cannot use zero-size for InvisibleButton(). Unlike Button() there is not way to fallback using the label size.
-    IM_ASSERT(size_arg.x != 0.0f && size_arg.y != 0.0f);
-
-    const ImGuiID id = window->GetID(str_id);
-    ImVec2 size = CalcItemSize(size_arg, 0.0f, 0.0f);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    ItemSize(bb);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    return pressed;
-}
-
-// Button to close a window
-bool ImGui::CloseButton(ImGuiID id, const ImVec2& pos, float radius)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    // We intentionally allow interaction when clipped so that a mechanical Alt,Right,Validate sequence close a window.
-    // (this isn't the regular behavior of buttons, but it doesn't affect the user much because navigation tends to keep items visible).
-    const ImRect bb(pos - ImVec2(radius,radius), pos + ImVec2(radius,radius));
-    bool is_clipped = !ItemAdd(bb, id);
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-    if (is_clipped)
-        return pressed;
-
-    // Render
-    ImVec2 center = bb.GetCenter();
-    if (hovered)
-        window->DrawList->AddCircleFilled(center, ImMax(2.0f, radius), GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : ImGuiCol_ButtonHovered), 9);
-
-    float cross_extent = (radius * 0.7071f) - 1.0f;
-    ImU32 cross_col = GetColorU32(ImGuiCol_Text);
-    center -= ImVec2(0.5f, 0.5f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent,+cross_extent), center + ImVec2(-cross_extent,-cross_extent), cross_col, 1.0f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent,-cross_extent), center + ImVec2(-cross_extent,+cross_extent), cross_col, 1.0f);
-
-    return pressed;
-}
-
-bool ImGui::CollapseButton(ImGuiID id, const ImVec2& pos)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    ImRect bb(pos, pos + ImVec2(g.FontSize, g.FontSize) + g.Style.FramePadding * 2.0f);
-    ItemAdd(bb, id);
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_None);
-
-    ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    if (hovered || held)
-        window->DrawList->AddCircleFilled(bb.GetCenter() + ImVec2(0.0f, -0.5f), g.FontSize * 0.5f + 1.0f, col, 9);
-    RenderArrow(bb.Min + g.Style.FramePadding, window->Collapsed ? ImGuiDir_Right : ImGuiDir_Down, 1.0f);
-
-    // Switch to moving the window after mouse is moved beyond the initial drag threshold
-    if (IsItemActive() && IsMouseDragging())
-        StartMouseMovingWindow(window);
-
-    return pressed;
-}
-
-void ImGui::Image(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, const ImVec4& tint_col, const ImVec4& border_col)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    if (border_col.w > 0.0f)
-        bb.Max += ImVec2(2,2);
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    if (border_col.w > 0.0f)
-    {
-        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(border_col), 0.0f);
-        window->DrawList->AddImage(user_texture_id, bb.Min+ImVec2(1,1), bb.Max-ImVec2(1,1), uv0, uv1, GetColorU32(tint_col));
-    }
-    else
-    {
-        window->DrawList->AddImage(user_texture_id, bb.Min, bb.Max, uv0, uv1, GetColorU32(tint_col));
-    }
-}
-
-// frame_padding < 0: uses FramePadding from style (default)
-// frame_padding = 0: no framing
-// frame_padding > 0: set framing size
-// The color used are the button colors.
-bool ImGui::ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, int frame_padding, const ImVec4& bg_col, const ImVec4& tint_col)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    // Default to using texture ID as ID. User can still push string/integer prefixes.
-    // We could hash the size/uv to create a unique ID but that would prevent the user from animating UV.
-    PushID((void*)user_texture_id);
-    const ImGuiID id = window->GetID("#image");
-    PopID();
-
-    const ImVec2 padding = (frame_padding >= 0) ? ImVec2((float)frame_padding, (float)frame_padding) : style.FramePadding;
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size + padding*2);
-    const ImRect image_bb(window->DC.CursorPos + padding, window->DC.CursorPos + padding + size);
-    ItemSize(bb);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, ImClamp((float)ImMin(padding.x, padding.y), 0.0f, style.FrameRounding));
-    if (bg_col.w > 0.0f)
-        window->DrawList->AddRectFilled(image_bb.Min, image_bb.Max, GetColorU32(bg_col));
-    window->DrawList->AddImage(user_texture_id, image_bb.Min, image_bb.Max, uv0, uv1, GetColorU32(tint_col));
-
-    return pressed;
-}
-
-// Start logging ImGui output to TTY
-void ImGui::LogToTTY(int max_depth)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = stdout;
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-// Start logging ImGui output to given file
-void ImGui::LogToFile(int max_depth, const char* filename)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    if (!filename)
-    {
-        filename = g.IO.LogFilename;
-        if (!filename)
-            return;
-    }
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = ImFileOpen(filename, "ab");
-    if (!g.LogFile)
-    {
-        IM_ASSERT(g.LogFile != NULL); // Consider this an error
-        return;
-    }
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-// Start logging ImGui output to clipboard
-void ImGui::LogToClipboard(int max_depth)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = NULL;
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-void ImGui::LogFinish()
-{
-    ImGuiContext& g = *GImGui;
-    if (!g.LogEnabled)
-        return;
-
-    LogText(IM_NEWLINE);
-    if (g.LogFile != NULL)
-    {
-        if (g.LogFile == stdout)
-            fflush(g.LogFile);
-        else
-            fclose(g.LogFile);
-        g.LogFile = NULL;
-    }
-    if (g.LogClipboard.size() > 1)
-    {
-        SetClipboardText(g.LogClipboard.begin());
-        g.LogClipboard.clear();
-    }
-    g.LogEnabled = false;
-}
-
-// Helper to display logging buttons
-void ImGui::LogButtons()
-{
-    ImGuiContext& g = *GImGui;
-
-    PushID("LogButtons");
-    const bool log_to_tty = Button("Log To TTY"); SameLine();
-    const bool log_to_file = Button("Log To File"); SameLine();
-    const bool log_to_clipboard = Button("Log To Clipboard"); SameLine();
-    PushItemWidth(80.0f);
-    PushAllowKeyboardFocus(false);
-    SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL);
-    PopAllowKeyboardFocus();
-    PopItemWidth();
-    PopID();
-
-    // Start logging at the end of the function so that the buttons don't appear in the log
-    if (log_to_tty)
-        LogToTTY(g.LogAutoExpandMaxDepth);
-    if (log_to_file)
-        LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename);
-    if (log_to_clipboard)
-        LogToClipboard(g.LogAutoExpandMaxDepth);
-}
-
-bool ImGui::TreeNodeBehaviorIsOpen(ImGuiID id, ImGuiTreeNodeFlags flags)
-{
-    if (flags & ImGuiTreeNodeFlags_Leaf)
-        return true;
-
-    // We only write to the tree storage if the user clicks (or explicitly use SetNextTreeNode*** functions)
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    ImGuiStorage* storage = window->DC.StateStorage;
-
-    bool is_open;
-    if (g.NextTreeNodeOpenCond != 0)
-    {
-        if (g.NextTreeNodeOpenCond & ImGuiCond_Always)
-        {
-            is_open = g.NextTreeNodeOpenVal;
-            storage->SetInt(id, is_open);
-        }
-        else
-        {
-            // We treat ImGuiCond_Once and ImGuiCond_FirstUseEver the same because tree node state are not saved persistently.
-            const int stored_value = storage->GetInt(id, -1);
-            if (stored_value == -1)
-            {
-                is_open = g.NextTreeNodeOpenVal;
-                storage->SetInt(id, is_open);
-            }
-            else
-            {
-                is_open = stored_value != 0;
-            }
-        }
-        g.NextTreeNodeOpenCond = 0;
-    }
-    else
-    {
-        is_open = storage->GetInt(id, (flags & ImGuiTreeNodeFlags_DefaultOpen) ? 1 : 0) != 0;
-    }
-
-    // When logging is enabled, we automatically expand tree nodes (but *NOT* collapsing headers.. seems like sensible behavior).
-    // NB- If we are above max depth we still allow manually opened nodes to be logged.
-    if (g.LogEnabled && !(flags & ImGuiTreeNodeFlags_NoAutoOpenOnLog) && window->DC.TreeDepth < g.LogAutoExpandMaxDepth)
-        is_open = true;
-
-    return is_open;
-}
-
-bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* label, const char* label_end)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const bool display_frame = (flags & ImGuiTreeNodeFlags_Framed) != 0;
-    const ImVec2 padding = (display_frame || (flags & ImGuiTreeNodeFlags_FramePadding)) ? style.FramePadding : ImVec2(style.FramePadding.x, 0.0f);
-
-    if (!label_end)
-        label_end = FindRenderedTextEnd(label);
-    const ImVec2 label_size = CalcTextSize(label, label_end, false);
-
-    // We vertically grow up to current line height up the typical widget height.
-    const float text_base_offset_y = ImMax(padding.y, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
-    const float frame_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + style.FramePadding.y*2), label_size.y + padding.y*2);
-    ImRect frame_bb = ImRect(window->DC.CursorPos, ImVec2(window->Pos.x + GetContentRegionMax().x, window->DC.CursorPos.y + frame_height));
-    if (display_frame)
-    {
-        // Framed header expand a little outside the default padding
-        frame_bb.Min.x -= (float)(int)(window->WindowPadding.x*0.5f) - 1;
-        frame_bb.Max.x += (float)(int)(window->WindowPadding.x*0.5f) - 1;
-    }
-
-    const float text_offset_x = (g.FontSize + (display_frame ? padding.x*3 : padding.x*2));   // Collapser arrow width + Spacing
-    const float text_width = g.FontSize + (label_size.x > 0.0f ? label_size.x + padding.x*2 : 0.0f);   // Include collapser
-    ItemSize(ImVec2(text_width, frame_height), text_base_offset_y);
-
-    // For regular tree nodes, we arbitrary allow to click past 2 worth of ItemSpacing
-    // (Ideally we'd want to add a flag for the user to specify if we want the hit test to be done up to the right side of the content or not)
-    const ImRect interact_bb = display_frame ? frame_bb : ImRect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + text_width + style.ItemSpacing.x*2, frame_bb.Max.y);
-    bool is_open = TreeNodeBehaviorIsOpen(id, flags);
-
-    // Store a flag for the current depth to tell if we will allow closing this node when navigating one of its child.
-    // For this purpose we essentially compare if g.NavIdIsAlive went from 0 to 1 between TreeNode() and TreePop().
-    // This is currently only support 32 level deep and we are fine with (1 << Depth) overflowing into a zero.
-    if (is_open && !g.NavIdIsAlive && (flags & ImGuiTreeNodeFlags_NavLeftJumpsBackHere) && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        window->DC.TreeDepthMayJumpToParentOnPop |= (1 << window->DC.TreeDepth);
-
-    bool item_add = ItemAdd(interact_bb, id);
-    window->DC.LastItemStatusFlags |= ImGuiItemStatusFlags_HasDisplayRect;
-    window->DC.LastItemDisplayRect = frame_bb;
-
-    if (!item_add)
-    {
-        if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-            TreePushRawID(id);
-        return is_open;
-    }
-
-    // Flags that affects opening behavior:
-    // - 0(default) ..................... single-click anywhere to open
-    // - OpenOnDoubleClick .............. double-click anywhere to open
-    // - OpenOnArrow .................... single-click on arrow to open
-    // - OpenOnDoubleClick|OpenOnArrow .. single-click on arrow or double-click anywhere to open
-    ImGuiButtonFlags button_flags = ImGuiButtonFlags_NoKeyModifiers | ((flags & ImGuiTreeNodeFlags_AllowItemOverlap) ? ImGuiButtonFlags_AllowItemOverlap : 0);
-    if (!(flags & ImGuiTreeNodeFlags_Leaf))
-        button_flags |= ImGuiButtonFlags_PressedOnDragDropHold;
-    if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
-        button_flags |= ImGuiButtonFlags_PressedOnDoubleClick | ((flags & ImGuiTreeNodeFlags_OpenOnArrow) ? ImGuiButtonFlags_PressedOnClickRelease : 0);
-
-    bool hovered, held, pressed = ButtonBehavior(interact_bb, id, &hovered, &held, button_flags);
-    if (!(flags & ImGuiTreeNodeFlags_Leaf))
-    {
-        bool toggled = false;
-        if (pressed)
-        {
-            toggled = !(flags & (ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick)) || (g.NavActivateId == id);
-            if (flags & ImGuiTreeNodeFlags_OpenOnArrow)
-                toggled |= IsMouseHoveringRect(interact_bb.Min, ImVec2(interact_bb.Min.x + text_offset_x, interact_bb.Max.y)) && (!g.NavDisableMouseHover);
-            if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
-                toggled |= g.IO.MouseDoubleClicked[0];
-            if (g.DragDropActive && is_open) // When using Drag and Drop "hold to open" we keep the node highlighted after opening, but never close it again.
-                toggled = false;
-        }
-
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Left && is_open)
-        {
-            toggled = true;
-            NavMoveRequestCancel();
-        }
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right && !is_open) // If there's something upcoming on the line we may want to give it the priority?
-        {
-            toggled = true;
-            NavMoveRequestCancel();
-        }
-
-        if (toggled)
-        {
-            is_open = !is_open;
-            window->DC.StateStorage->SetInt(id, is_open);
-        }
-    }
-    if (flags & ImGuiTreeNodeFlags_AllowItemOverlap)
-        SetItemAllowOverlap();
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
-    const ImVec2 text_pos = frame_bb.Min + ImVec2(text_offset_x, text_base_offset_y);
-    if (display_frame)
-    {
-        // Framed type
-        RenderFrame(frame_bb.Min, frame_bb.Max, col, true, style.FrameRounding);
-        RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
-        RenderArrow(frame_bb.Min + ImVec2(padding.x, text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 1.0f);
-        if (g.LogEnabled)
-        {
-            // NB: '##' is normally used to hide text (as a library-wide feature), so we need to specify the text range to make sure the ## aren't stripped out here.
-            const char log_prefix[] = "\n##";
-            const char log_suffix[] = "##";
-            LogRenderedText(&text_pos, log_prefix, log_prefix+3);
-            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
-            LogRenderedText(&text_pos, log_suffix+1, log_suffix+3);
-        }
-        else
-        {
-            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
-        }
-    }
-    else
-    {
-        // Unframed typed for tree nodes
-        if (hovered || (flags & ImGuiTreeNodeFlags_Selected))
-        {
-            RenderFrame(frame_bb.Min, frame_bb.Max, col, false);
-            RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
-        }
-
-        if (flags & ImGuiTreeNodeFlags_Bullet)
-            RenderBullet(frame_bb.Min + ImVec2(text_offset_x * 0.5f, g.FontSize*0.50f + text_base_offset_y));
-        else if (!(flags & ImGuiTreeNodeFlags_Leaf))
-            RenderArrow(frame_bb.Min + ImVec2(padding.x, g.FontSize*0.15f + text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 0.70f);
-        if (g.LogEnabled)
-            LogRenderedText(&text_pos, ">");
-        RenderText(text_pos, label, label_end, false);
-    }
-
-    if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        TreePushRawID(id);
-    return is_open;
-}
-
-// CollapsingHeader returns true when opened but do not indent nor push into the ID stack (because of the ImGuiTreeNodeFlags_NoTreePushOnOpen flag).
-// This is basically the same as calling TreeNodeEx(label, ImGuiTreeNodeFlags_CollapsingHeader). You can remove the _NoTreePushOnOpen flag if you want behavior closer to normal TreeNode().
-bool ImGui::CollapsingHeader(const char* label, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags | ImGuiTreeNodeFlags_CollapsingHeader, label);
-}
-
-bool ImGui::CollapsingHeader(const char* label, bool* p_open, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    if (p_open && !*p_open)
-        return false;
-
-    ImGuiID id = window->GetID(label);
-    bool is_open = TreeNodeBehavior(id, flags | ImGuiTreeNodeFlags_CollapsingHeader | (p_open ? ImGuiTreeNodeFlags_AllowItemOverlap : 0), label);
-    if (p_open)
-    {
-        // Create a small overlapping close button // FIXME: We can evolve this into user accessible helpers to add extra buttons on title bars, headers, etc.
-        ImGuiContext& g = *GImGui;
-        ImGuiItemHoveredDataBackup last_item_backup;
-        float button_radius = g.FontSize * 0.5f;
-        ImVec2 button_center = ImVec2(ImMin(window->DC.LastItemRect.Max.x, window->ClipRect.Max.x) - g.Style.FramePadding.x - button_radius, window->DC.LastItemRect.GetCenter().y);
-        if (CloseButton(window->GetID((void*)(intptr_t)(id+1)), button_center, button_radius))
-            *p_open = false;
-        last_item_backup.Restore();
-    }
-
-    return is_open;
-}
-
-bool ImGui::TreeNodeEx(const char* label, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags, label, NULL);
-}
-
-bool ImGui::TreeNodeExV(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    return TreeNodeBehavior(window->GetID(str_id), flags, g.TempBuffer, label_end);
-}
-
-bool ImGui::TreeNodeExV(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    return TreeNodeBehavior(window->GetID(ptr_id), flags, g.TempBuffer, label_end);
-}
-
-bool ImGui::TreeNodeV(const char* str_id, const char* fmt, va_list args)
-{
-    return TreeNodeExV(str_id, 0, fmt, args);
-}
-
-bool ImGui::TreeNodeV(const void* ptr_id, const char* fmt, va_list args)
-{
-    return TreeNodeExV(ptr_id, 0, fmt, args);
-}
-
-bool ImGui::TreeNodeEx(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(str_id, flags, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNodeEx(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(ptr_id, flags, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const char* str_id, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(str_id, 0, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const void* ptr_id, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(ptr_id, 0, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const char* label)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-    return TreeNodeBehavior(window->GetID(label), 0, label, NULL);
-}
-
-void ImGui::TreeAdvanceToLabelPos()
-{
-    ImGuiContext& g = *GImGui;
-    g.CurrentWindow->DC.CursorPos.x += GetTreeNodeToLabelSpacing();
-}
-
-// Horizontal distance preceding label when using TreeNode() or Bullet()
-float ImGui::GetTreeNodeToLabelSpacing()
-{
-    ImGuiContext& g = *GImGui;
-    return g.FontSize + (g.Style.FramePadding.x * 2.0f);
-}
-
-void ImGui::SetNextTreeNodeOpen(bool is_open, ImGuiCond cond)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow->SkipItems)
-        return;
-    g.NextTreeNodeOpenVal = is_open;
-    g.NextTreeNodeOpenCond = cond ? cond : ImGuiCond_Always;
-}
-
 void ImGui::PushID(const char* str_id)
 {
     ImGuiWindow* window = GetCurrentWindowRead();
@@ -8957,4093 +6069,6 @@
     return GImGui->CurrentWindow->GetID(ptr_id);
 }
 
-void ImGui::Bullet()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize, line_height));
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-    {
-        SameLine(0, style.FramePadding.x*2);
-        return;
-    }
-
-    // Render and stay on same line
-    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
-    SameLine(0, style.FramePadding.x*2);
-}
-
-// Text with a little bullet aligned to the typical tree node.
-void ImGui::BulletTextV(const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const char* text_begin = g.TempBuffer;
-    const char* text_end = text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    const ImVec2 label_size = CalcTextSize(text_begin, text_end, false);
-    const float text_base_offset_y = ImMax(0.0f, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
-    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize + (label_size.x > 0.0f ? (label_size.x + style.FramePadding.x*2) : 0.0f), ImMax(line_height, label_size.y)));  // Empty text doesn't add padding
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    // Render
-    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
-    RenderText(bb.Min+ImVec2(g.FontSize + style.FramePadding.x*2, text_base_offset_y), text_begin, text_end, false);
-}
-
-void ImGui::BulletText(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    BulletTextV(fmt, args);
-    va_end(args);
-}
-
-static inline int DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format)
-{
-    if (data_type == ImGuiDataType_S32 || data_type == ImGuiDataType_U32)   // Signedness doesn't matter when pushing the argument
-        return ImFormatString(buf, buf_size, format, *(const ImU32*)data_ptr);
-    if (data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)   // Signedness doesn't matter when pushing the argument
-        return ImFormatString(buf, buf_size, format, *(const ImU64*)data_ptr);
-    if (data_type == ImGuiDataType_Float)
-        return ImFormatString(buf, buf_size, format, *(const float*)data_ptr);
-    if (data_type == ImGuiDataType_Double)
-        return ImFormatString(buf, buf_size, format, *(const double*)data_ptr);
-    IM_ASSERT(0);
-    return 0;
-}
-
-// FIXME: Adding support for clamping on boundaries of the data type would be nice.
-static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg1, const void* arg2)
-{
-    IM_ASSERT(op == '+' || op == '-');
-    switch (data_type)
-    {
-        case ImGuiDataType_S32:
-            if (op == '+')      *(int*)output = *(const int*)arg1 + *(const int*)arg2;
-            else if (op == '-') *(int*)output = *(const int*)arg1 - *(const int*)arg2;
-            return;
-        case ImGuiDataType_U32:
-            if (op == '+')      *(unsigned int*)output = *(const unsigned int*)arg1 + *(const ImU32*)arg2;
-            else if (op == '-') *(unsigned int*)output = *(const unsigned int*)arg1 - *(const ImU32*)arg2;
-            return;
-        case ImGuiDataType_S64:
-            if (op == '+')      *(ImS64*)output = *(const ImS64*)arg1 + *(const ImS64*)arg2;
-            else if (op == '-') *(ImS64*)output = *(const ImS64*)arg1 - *(const ImS64*)arg2;
-            return;
-        case ImGuiDataType_U64:
-            if (op == '+')      *(ImU64*)output = *(const ImU64*)arg1 + *(const ImU64*)arg2;
-            else if (op == '-') *(ImU64*)output = *(const ImU64*)arg1 - *(const ImU64*)arg2;
-            return;
-        case ImGuiDataType_Float:
-            if (op == '+')      *(float*)output = *(const float*)arg1 + *(const float*)arg2;
-            else if (op == '-') *(float*)output = *(const float*)arg1 - *(const float*)arg2;
-            return;
-        case ImGuiDataType_Double:
-            if (op == '+')      *(double*)output = *(const double*)arg1 + *(const double*)arg2;
-            else if (op == '-') *(double*)output = *(const double*)arg1 - *(const double*)arg2;
-            return;
-        case ImGuiDataType_COUNT: break;
-    }
-    IM_ASSERT(0);
-}
-
-struct ImGuiDataTypeInfo
-{
-    size_t      Size;
-    const char* PrintFmt;   // Unused
-    const char* ScanFmt;
-};
-
-static const ImGuiDataTypeInfo GDataTypeInfo[] =
-{
-    { sizeof(int),          "%d",   "%d"    },
-    { sizeof(unsigned int), "%u",   "%u"    },
-#ifdef _MSC_VER
-    { sizeof(ImS64),        "%I64d","%I64d" },
-    { sizeof(ImU64),        "%I64u","%I64u" },
-#else
-    { sizeof(ImS64),        "%lld", "%lld"  },
-    { sizeof(ImU64),        "%llu", "%llu"  },
-#endif
-    { sizeof(float),        "%f",   "%f"    },  // float are promoted to double in va_arg
-    { sizeof(double),       "%f",   "%lf"   },
-};
-IM_STATIC_ASSERT(IM_ARRAYSIZE(GDataTypeInfo) == ImGuiDataType_COUNT);
-
-// User can input math operators (e.g. +100) to edit a numerical values.
-// NB: This is _not_ a full expression evaluator. We should probably add one and replace this dumb mess..
-static bool DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format)
-{
-    while (ImCharIsBlankA(*buf))
-        buf++;
-
-    // We don't support '-' op because it would conflict with inputing negative value.
-    // Instead you can use +-100 to subtract from an existing value
-    char op = buf[0];
-    if (op == '+' || op == '*' || op == '/')
-    {
-        buf++;
-        while (ImCharIsBlankA(*buf))
-            buf++;
-    }
-    else
-    {
-        op = 0;
-    }
-    if (!buf[0])
-        return false;
-
-    // Copy the value in an opaque buffer so we can compare at the end of the function if it changed at all.
-    IM_ASSERT(data_type < ImGuiDataType_COUNT);
-    int data_backup[2];
-    IM_ASSERT(GDataTypeInfo[data_type].Size <= sizeof(data_backup));
-    memcpy(data_backup, data_ptr, GDataTypeInfo[data_type].Size);
-
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].ScanFmt;
-
-    int arg1i = 0;
-    if (data_type == ImGuiDataType_S32)
-    {
-        int* v = (int*)data_ptr;
-        int arg0i = *v;
-        float arg1f = 0.0f;
-        if (op && sscanf(initial_value_buf, format, &arg0i) < 1)
-            return false;
-        // Store operand in a float so we can use fractional value for multipliers (*1.1), but constant always parsed as integer so we can fit big integers (e.g. 2000000003) past float precision
-        if (op == '+')      { if (sscanf(buf, "%d", &arg1i)) *v = (int)(arg0i + arg1i); }                   // Add (use "+-" to subtract)
-        else if (op == '*') { if (sscanf(buf, "%f", &arg1f)) *v = (int)(arg0i * arg1f); }                   // Multiply
-        else if (op == '/') { if (sscanf(buf, "%f", &arg1f) && arg1f != 0.0f) *v = (int)(arg0i / arg1f); }  // Divide
-        else                { if (sscanf(buf, format, &arg1i) == 1) *v = arg1i; }                           // Assign constant
-    }
-    else if (data_type == ImGuiDataType_U32 || data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)
-    {
-        // Assign constant
-        // FIXME: We don't bother handling support for legacy operators since they are a little too crappy. Instead we may implement a proper expression evaluator in the future.
-        sscanf(buf, format, data_ptr);
-    }
-    else if (data_type == ImGuiDataType_Float)
-    {
-        // For floats we have to ignore format with precision (e.g. "%.2f") because sscanf doesn't take them in
-        format = "%f";
-        float* v = (float*)data_ptr;
-        float arg0f = *v, arg1f = 0.0f;
-        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
-            return false;
-        if (sscanf(buf, format, &arg1f) < 1)
-            return false;
-        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
-        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
-        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
-        else                { *v = arg1f; }                            // Assign constant
-    }
-    else if (data_type == ImGuiDataType_Double)
-    {
-        format = "%lf"; // scanf differentiate float/double unlike printf which forces everything to double because of ellipsis
-        double* v = (double*)data_ptr;
-        double arg0f = *v, arg1f = 0.0;
-        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
-            return false;
-        if (sscanf(buf, format, &arg1f) < 1)
-            return false;
-        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
-        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
-        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
-        else                { *v = arg1f; }                            // Assign constant
-    }
-    return memcmp(data_backup, data_ptr, GDataTypeInfo[data_type].Size) != 0;
-}
-
-// Create text input in place of a slider (when CTRL+Clicking on slider)
-// FIXME: Logic is messy and confusing.
-bool ImGui::InputScalarAsWidgetReplacement(const ImRect& bb, ImGuiID id, const char* label, ImGuiDataType data_type, void* data_ptr, const char* format)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-
-    // Our replacement widget will override the focus ID (registered previously to allow for a TAB focus to happen)
-    // On the first frame, g.ScalarAsInputTextId == 0, then on subsequent frames it becomes == id
-    SetActiveID(g.ScalarAsInputTextId, window);
-    g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-    SetHoveredID(0);
-    FocusableItemUnregister(window);
-
-    char fmt_buf[32];
-    char data_buf[32];
-    format = ImParseFormatTrimDecorations(format, fmt_buf, IM_ARRAYSIZE(fmt_buf));
-    DataTypeFormatString(data_buf, IM_ARRAYSIZE(data_buf), data_type, data_ptr, format);
-    ImStrTrimBlanks(data_buf);
-    ImGuiInputTextFlags flags = ImGuiInputTextFlags_AutoSelectAll | ((data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImGuiInputTextFlags_CharsScientific : ImGuiInputTextFlags_CharsDecimal);
-    bool value_changed = InputTextEx(label, data_buf, IM_ARRAYSIZE(data_buf), bb.GetSize(), flags);
-    if (g.ScalarAsInputTextId == 0)     // First frame we started displaying the InputText widget
-    {
-        IM_ASSERT(g.ActiveId == id);    // InputText ID expected to match the Slider ID
-        g.ScalarAsInputTextId = g.ActiveId;
-        SetHoveredID(id);
-    }
-    if (value_changed)
-        return DataTypeApplyOpFromText(data_buf, g.InputTextState.InitialText.Data, data_type, data_ptr, NULL);
-    return false;
-}
-
-// We don't use strchr() because our strings are usually very short and often start with '%'
-const char* ImParseFormatFindStart(const char* fmt)
-{
-    while (char c = fmt[0])
-    {
-        if (c == '%' && fmt[1] != '%')
-            return fmt;
-        else if (c == '%')
-            fmt++;
-        fmt++;
-    }
-    return fmt;
-}
-
-const char* ImParseFormatFindEnd(const char* fmt)
-{
-    // Printf/scanf types modifiers: I/L/h/j/l/t/w/z. Other uppercase letters qualify as types aka end of the format.
-    if (fmt[0] != '%')
-        return fmt;
-    const unsigned int ignored_uppercase_mask = (1 << ('I'-'A')) | (1 << ('L'-'A'));
-    const unsigned int ignored_lowercase_mask = (1 << ('h'-'a')) | (1 << ('j'-'a')) | (1 << ('l'-'a')) | (1 << ('t'-'a')) | (1 << ('w'-'a')) | (1 << ('z'-'a'));
-    for (char c; (c = *fmt) != 0; fmt++)
-    {
-        if (c >= 'A' && c <= 'Z' && ((1 << (c - 'A')) & ignored_uppercase_mask) == 0)
-            return fmt + 1;
-        if (c >= 'a' && c <= 'z' && ((1 << (c - 'a')) & ignored_lowercase_mask) == 0)
-            return fmt + 1;
-    }
-    return fmt;
-}
-
-// Extract the format out of a format string with leading or trailing decorations
-//  fmt = "blah blah"  -> return fmt
-//  fmt = "%.3f"       -> return fmt
-//  fmt = "hello %.3f" -> return fmt + 6
-//  fmt = "%.3f hello" -> return buf written with "%.3f"
-const char* ImParseFormatTrimDecorations(const char* fmt, char* buf, int buf_size)
-{
-    const char* fmt_start = ImParseFormatFindStart(fmt);
-    if (fmt_start[0] != '%')
-        return fmt;
-    const char* fmt_end = ImParseFormatFindEnd(fmt_start);
-    if (fmt_end[0] == 0) // If we only have leading decoration, we don't need to copy the data.
-        return fmt_start;
-    ImStrncpy(buf, fmt_start, ImMin((int)(fmt_end + 1 - fmt_start), buf_size));
-    return buf;
-}
-
-// Parse display precision back from the display format string
-// FIXME: This is still used by some navigation code path to infer a minimum tweak step, but we should aim to rework widgets so it isn't needed.
-int ImParseFormatPrecision(const char* fmt, int default_precision)
-{
-    fmt = ImParseFormatFindStart(fmt);
-    if (fmt[0] != '%')
-        return default_precision;
-    fmt++;
-    while (*fmt >= '0' && *fmt <= '9')
-        fmt++;
-    int precision = INT_MAX;
-    if (*fmt == '.')
-    {
-        fmt = ImAtoi<int>(fmt + 1, &precision);
-        if (precision < 0 || precision > 99)
-            precision = default_precision;
-    }
-    if (*fmt == 'e' || *fmt == 'E') // Maximum precision with scientific notation
-        precision = -1;
-    if ((*fmt == 'g' || *fmt == 'G') && precision == INT_MAX)
-        precision = -1;
-    return (precision == INT_MAX) ? default_precision : precision;
-}
-
-static float GetMinimumStepAtDecimalPrecision(int decimal_precision)
-{
-    static const float min_steps[10] = { 1.0f, 0.1f, 0.01f, 0.001f, 0.0001f, 0.00001f, 0.000001f, 0.0000001f, 0.00000001f, 0.000000001f };
-    if (decimal_precision < 0)
-        return FLT_MIN;
-    return (decimal_precision >= 0 && decimal_precision < 10) ? min_steps[decimal_precision] : ImPow(10.0f, (float)-decimal_precision);
-}
-
-template<typename TYPE, typename SIGNEDTYPE>
-static inline TYPE RoundScalarWithFormat(const char* format, ImGuiDataType data_type, TYPE v)
-{
-    const char* fmt_start = ImParseFormatFindStart(format);
-    if (fmt_start[0] != '%' || fmt_start[1] == '%') // Don't apply if the value is not visible in the format string
-        return v;
-    char v_str[64];
-    ImFormatString(v_str, IM_ARRAYSIZE(v_str), fmt_start, v);
-    const char* p = v_str;
-    while (*p == ' ')
-        p++;
-    if (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double)
-        v = (TYPE)ImAtof(p);
-    else
-        ImAtoi(p, (SIGNEDTYPE*)&v);
-    return v;
-}
-
-template<typename TYPE, typename FLOATTYPE>
-static inline float SliderBehaviorCalcRatioFromValue(ImGuiDataType data_type, TYPE v, TYPE v_min, TYPE v_max, float power, float linear_zero_pos)
-{
-    if (v_min == v_max)
-        return 0.0f;
-
-    const bool is_power = (power != 1.0f) && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double);
-    const TYPE v_clamped = (v_min < v_max) ? ImClamp(v, v_min, v_max) : ImClamp(v, v_max, v_min);
-    if (is_power)
-    {
-        if (v_clamped < 0.0f)
-        {
-            const float f = 1.0f - (float)((v_clamped - v_min) / (ImMin((TYPE)0, v_max) - v_min));
-            return (1.0f - ImPow(f, 1.0f/power)) * linear_zero_pos;
-        }
-        else
-        {
-            const float f = (float)((v_clamped - ImMax((TYPE)0, v_min)) / (v_max - ImMax((TYPE)0, v_min)));
-            return linear_zero_pos + ImPow(f, 1.0f/power) * (1.0f - linear_zero_pos);
-        }
-    }
-
-    // Linear slider
-    return (float)((FLOATTYPE)(v_clamped - v_min) / (FLOATTYPE)(v_max - v_min));
-}
-
-// FIXME: Move some of the code into SliderBehavior(). Current responsability is larger than what the equivalent DragBehaviorT<> does, we also do some rendering, etc.
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
-{
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const bool is_horizontal = (flags & ImGuiSliderFlags_Vertical) == 0;
-    const bool is_decimal = (data_type == ImGuiDataType_Float) || (data_type == ImGuiDataType_Double);
-    const bool is_power = (power != 1.0f) && is_decimal;
-
-    const float grab_padding = 2.0f;
-    const float slider_sz = is_horizontal ? (bb.GetWidth() - grab_padding * 2.0f) : (bb.GetHeight() - grab_padding * 2.0f);
-    float grab_sz = style.GrabMinSize;
-    SIGNEDTYPE v_range = (v_min < v_max ? v_max - v_min : v_min - v_max);
-    if (!is_decimal && v_range >= 0)                                             // v_range < 0 may happen on integer overflows
-        grab_sz = ImMax((float)(slider_sz / (v_range + 1)), style.GrabMinSize);  // For integer sliders: if possible have the grab size represent 1 unit
-    grab_sz = ImMin(grab_sz, slider_sz);
-    const float slider_usable_sz = slider_sz - grab_sz;
-    const float slider_usable_pos_min = (is_horizontal ? bb.Min.x : bb.Min.y) + grab_padding + grab_sz*0.5f;
-    const float slider_usable_pos_max = (is_horizontal ? bb.Max.x : bb.Max.y) - grab_padding - grab_sz*0.5f;
-
-    // For power curve sliders that cross over sign boundary we want the curve to be symmetric around 0.0f
-    float linear_zero_pos;   // 0.0->1.0f
-    if (is_power && v_min * v_max < 0.0f)
-    {
-        // Different sign
-        const FLOATTYPE linear_dist_min_to_0 = ImPow(v_min >= 0 ? (FLOATTYPE)v_min : -(FLOATTYPE)v_min, (FLOATTYPE)1.0f/power);
-        const FLOATTYPE linear_dist_max_to_0 = ImPow(v_max >= 0 ? (FLOATTYPE)v_max : -(FLOATTYPE)v_max, (FLOATTYPE)1.0f/power);
-        linear_zero_pos = (float)(linear_dist_min_to_0 / (linear_dist_min_to_0 + linear_dist_max_to_0));
-    }
-    else
-    {
-        // Same sign
-        linear_zero_pos = v_min < 0.0f ? 1.0f : 0.0f;
-    }
-
-    // Process interacting with the slider
-    bool value_changed = false;
-    if (g.ActiveId == id)
-    {
-        bool set_new_value = false;
-        float clicked_t = 0.0f;
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
-        {
-            if (!g.IO.MouseDown[0])
-            {
-                ClearActiveID();
-            }
-            else
-            {
-                const float mouse_abs_pos = is_horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
-                clicked_t = (slider_usable_sz > 0.0f) ? ImClamp((mouse_abs_pos - slider_usable_pos_min) / slider_usable_sz, 0.0f, 1.0f) : 0.0f;
-                if (!is_horizontal)
-                    clicked_t = 1.0f - clicked_t;
-                set_new_value = true;
-            }
-        }
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-        {
-            const ImVec2 delta2 = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard | ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 0.0f, 0.0f);
-            float delta = is_horizontal ? delta2.x : -delta2.y;
-            if (g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
-            {
-                ClearActiveID();
-            }
-            else if (delta != 0.0f)
-            {
-                clicked_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
-                const int decimal_precision = is_decimal ? ImParseFormatPrecision(format, 3) : 0;
-                if ((decimal_precision > 0) || is_power)
-                {
-                    delta /= 100.0f;    // Gamepad/keyboard tweak speeds in % of slider bounds
-                    if (IsNavInputDown(ImGuiNavInput_TweakSlow))
-                        delta /= 10.0f;
-                }
-                else
-                {
-                    if ((v_range >= -100.0f && v_range <= 100.0f) || IsNavInputDown(ImGuiNavInput_TweakSlow))
-                        delta = ((delta < 0.0f) ? -1.0f : +1.0f) / (float)v_range; // Gamepad/keyboard tweak speeds in integer steps
-                    else
-                        delta /= 100.0f;
-                }
-                if (IsNavInputDown(ImGuiNavInput_TweakFast))
-                    delta *= 10.0f;
-                set_new_value = true;
-                if ((clicked_t >= 1.0f && delta > 0.0f) || (clicked_t <= 0.0f && delta < 0.0f)) // This is to avoid applying the saturation when already past the limits
-                    set_new_value = false;
-                else
-                    clicked_t = ImSaturate(clicked_t + delta);
-            }
-        }
-
-        if (set_new_value)
-        {
-            TYPE v_new;
-            if (is_power)
-            {
-                // Account for power curve scale on both sides of the zero
-                if (clicked_t < linear_zero_pos)
-                {
-                    // Negative: rescale to the negative range before powering
-                    float a = 1.0f - (clicked_t / linear_zero_pos);
-                    a = ImPow(a, power);
-                    v_new = ImLerp(ImMin(v_max, (TYPE)0), v_min, a);
-                }
-                else
-                {
-                    // Positive: rescale to the positive range before powering
-                    float a;
-                    if (ImFabs(linear_zero_pos - 1.0f) > 1.e-6f)
-                        a = (clicked_t - linear_zero_pos) / (1.0f - linear_zero_pos);
-                    else
-                        a = clicked_t;
-                    a = ImPow(a, power);
-                    v_new = ImLerp(ImMax(v_min, (TYPE)0), v_max, a);
-                }
-            }
-            else
-            {
-                // Linear slider
-                if (is_decimal)
-                {
-                    v_new = ImLerp(v_min, v_max, clicked_t);
-                }
-                else
-                {
-                    // For integer values we want the clicking position to match the grab box so we round above
-                    // This code is carefully tuned to work with large values (e.g. high ranges of U64) while preserving this property..
-                    FLOATTYPE v_new_off_f = (v_max - v_min) * clicked_t;
-                    TYPE v_new_off_floor = (TYPE)(v_new_off_f);
-                    TYPE v_new_off_round = (TYPE)(v_new_off_f + (FLOATTYPE)0.5);
-                    if (!is_decimal && v_new_off_floor < v_new_off_round)
-                        v_new = v_min + v_new_off_round;
-                    else
-                        v_new = v_min + v_new_off_floor;
-                }
-            }
-
-            // Round to user desired precision based on format string
-            v_new = RoundScalarWithFormat<TYPE,SIGNEDTYPE>(format, data_type, v_new);
-
-            // Apply result
-            if (*v != v_new)
-            {
-                *v = v_new;
-                value_changed = true;
-            }
-        }
-    }
-
-    // Output grab position so it can be displayed by the caller
-    float grab_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
-    if (!is_horizontal)
-        grab_t = 1.0f - grab_t;
-    const float grab_pos = ImLerp(slider_usable_pos_min, slider_usable_pos_max, grab_t);
-    if (is_horizontal)
-        *out_grab_bb = ImRect(grab_pos - grab_sz*0.5f, bb.Min.y + grab_padding, grab_pos + grab_sz*0.5f, bb.Max.y - grab_padding);
-    else
-        *out_grab_bb = ImRect(bb.Min.x + grab_padding, grab_pos - grab_sz*0.5f, bb.Max.x - grab_padding, grab_pos + grab_sz*0.5f);
-
-    return value_changed;
-}
-
-// For 32-bits and larger types, slider bounds are limited to half the natural type range.
-// So e.g. an integer Slider between INT_MAX-10 and INT_MAX will fail, but an integer Slider between INT_MAX/2-10 and INT_MAX/2 will be ok.
-// It would be possible to lift that limitation with some work but it doesn't seem to be worth it for sliders.
-bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
-{
-    switch (data_type)
-    {
-    case ImGuiDataType_S32:
-        IM_ASSERT(*(const ImS32*)v_min >= IM_S32_MIN/2 && *(const ImS32*)v_max <= IM_S32_MAX/2);
-        return SliderBehaviorT<ImS32, ImS32, float >(bb, id, data_type, (ImS32*)v,  *(const ImS32*)v_min,  *(const ImS32*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_U32:
-        IM_ASSERT(*(const ImU32*)v_min <= IM_U32_MAX/2);
-        return SliderBehaviorT<ImU32, ImS32, float >(bb, id, data_type, (ImU32*)v,  *(const ImU32*)v_min,  *(const ImU32*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_S64:
-        IM_ASSERT(*(const ImS64*)v_min >= IM_S64_MIN/2 && *(const ImS64*)v_max <= IM_S64_MAX/2);
-        return SliderBehaviorT<ImS64, ImS64, double>(bb, id, data_type, (ImS64*)v,  *(const ImS64*)v_min,  *(const ImS64*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_U64:
-        IM_ASSERT(*(const ImU64*)v_min <= IM_U64_MAX/2);
-        return SliderBehaviorT<ImU64, ImS64, double>(bb, id, data_type, (ImU64*)v,  *(const ImU64*)v_min,  *(const ImU64*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_Float:
-        IM_ASSERT(*(const float*)v_min >= -FLT_MAX/2.0f && *(const float*)v_max <= FLT_MAX/2.0f);
-        return SliderBehaviorT<float, float, float >(bb, id, data_type, (float*)v,  *(const float*)v_min,  *(const float*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_Double:
-        IM_ASSERT(*(const double*)v_min >= -DBL_MAX/2.0f && *(const double*)v_max <= DBL_MAX/2.0f);
-        return SliderBehaviorT<double,double,double>(bb, id, data_type, (double*)v, *(const double*)v_min, *(const double*)v_max, format, power, flags, out_grab_bb);
-    case ImGuiDataType_COUNT: break;
-    }
-    IM_ASSERT(0);
-    return false;
-}
-
-// FIXME-LEGACY: Prior to 1.61 our DragInt() function internally used floats and because of this the compile-time default value for format was "%.0f".
-// Even though we changed the compile-time default, we expect users to have carried %f around, which would break the display of DragInt() calls.
-// To honor backward compatibility we are rewriting the format string, unless IMGUI_DISABLE_OBSOLETE_FUNCTIONS is enabled. What could possibly go wrong?!
-static const char* PatchFormatStringFloatToInt(const char* fmt)
-{
-    if (fmt[0] == '%' && fmt[1] == '.' && fmt[2] == '0' && fmt[3] == 'f' && fmt[4] == 0) // Fast legacy path for "%.0f" which is expected to be the most common case.
-        return "%d";
-    const char* fmt_start = ImParseFormatFindStart(fmt);    // Find % (if any, and ignore %%)
-    const char* fmt_end = ImParseFormatFindEnd(fmt_start);  // Find end of format specifier, which itself is an exercise of confidence/recklessness (because snprintf is dependent on libc or user).
-    if (fmt_end > fmt_start && fmt_end[-1] == 'f')
-    {
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-        if (fmt_start == fmt && fmt_end[0] == 0)
-            return "%d";
-        ImGuiContext& g = *GImGui;
-        ImFormatString(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), "%.*s%%d%s", (int)(fmt_start - fmt), fmt, fmt_end); // Honor leading and trailing decorations, but lose alignment/precision.
-        return g.TempBuffer;
-#else
-        IM_ASSERT(0 && "DragInt(): Invalid format string!"); // Old versions used a default parameter of "%.0f", please replace with e.g. "%d"
-#endif
-    }
-    return fmt;
-}
-
-bool ImGui::SliderScalar(const char* label, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
-    if (!ItemAdd(total_bb, id, &frame_bb))
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        return false;
-    }
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    // Tabbing or CTRL-clicking on Slider turns it into an input box
-    bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, id);
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if (tab_focus_requested || (hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        if (tab_focus_requested || g.IO.KeyCtrl || g.NavInputId == id)
-        {
-            start_text_input = true;
-            g.ScalarAsInputTextId = 0;
-        }
-    }
-    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
-        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
-
-    ItemSize(total_bb, style.FramePadding.y);
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
-
-    // Slider behavior
-    ImRect grab_bb;
-    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_None, &grab_bb);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Render grab
-    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.5f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalar(label, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
-}
-
-bool ImGui::VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(frame_bb, id))
-        return false;
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if ((hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || g.NavInputId == id)
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right);
-    }
-
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
-
-    // Slider behavior
-    ImRect grab_bb;
-    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_Vertical, &grab_bb);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Render grab
-    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    // For the vertical slider we allow centered text to overlap the frame padding
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.0f));
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::SliderAngle(const char* label, float* v_rad, float v_degrees_min, float v_degrees_max)
-{
-    float v_deg = (*v_rad) * 360.0f / (2*IM_PI);
-    bool value_changed = SliderFloat(label, &v_deg, v_degrees_min, v_degrees_max, "%.0f deg", 1.0f);
-    *v_rad = v_deg * (2*IM_PI) / 360.0f;
-    return value_changed;
-}
-
-bool ImGui::SliderInt(const char* label, int* v, int v_min, int v_max, const char* format)
-{
-    return SliderScalar(label, ImGuiDataType_S32, v, &v_min, &v_max, format);
-}
-
-bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* format, float power)
-{
-    return VSliderScalar(label, size, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
-}
-
-bool ImGui::VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format)
-{
-    return VSliderScalar(label, size, ImGuiDataType_S32, v, &v_min, &v_max, format);
-}
-
-// Add multiple sliders on 1 line for compact edition of multiple components
-bool ImGui::SliderScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= SliderScalar("##v", data_type, v, v_min, v_max, format, power);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 2, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 3, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 4, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 2, &v_min, &v_max, format);
-}
-
-bool ImGui::SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 3, &v_min, &v_max, format);
-}
-
-bool ImGui::SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 4, &v_min, &v_max, format);
-}
-
-// This is called by DragBehavior() when the widget is active (held by mouse or being manipulated with Nav controls)
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power)
-{
-    ImGuiContext& g = *GImGui;
-
-    // Default tweak speed
-    bool has_min_max = (v_min != v_max) && (v_max - v_max < FLT_MAX);
-    if (v_speed == 0.0f && has_min_max)
-        v_speed = (float)((v_max - v_min) * g.DragSpeedDefaultRatio);
-
-    // Inputs accumulates into g.DragCurrentAccum, which is flushed into the current value as soon as it makes a difference with our precision settings
-    float adjust_delta = 0.0f;
-    if (g.ActiveIdSource == ImGuiInputSource_Mouse && IsMousePosValid() && g.IO.MouseDragMaxDistanceSqr[0] > 1.0f*1.0f)
-    {
-        adjust_delta = g.IO.MouseDelta.x;
-        if (g.IO.KeyAlt)
-            adjust_delta *= 1.0f/100.0f;
-        if (g.IO.KeyShift)
-            adjust_delta *= 10.0f;
-    }
-    else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-    {
-        int decimal_precision = (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImParseFormatPrecision(format, 3) : 0;
-        adjust_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard|ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 1.0f/10.0f, 10.0f).x;
-        v_speed = ImMax(v_speed, GetMinimumStepAtDecimalPrecision(decimal_precision));
-    }
-    adjust_delta *= v_speed;
-
-    // Clear current value on activation
-    // Avoid altering values and clamping when we are _already_ past the limits and heading in the same direction, so e.g. if range is 0..255, current value is 300 and we are pushing to the right side, keep the 300.
-    bool is_just_activated = g.ActiveIdIsJustActivated;
-    bool is_already_past_limits_and_pushing_outward = has_min_max && ((*v >= v_max && adjust_delta > 0.0f) || (*v <= v_min && adjust_delta < 0.0f));
-    if (is_just_activated || is_already_past_limits_and_pushing_outward)
-    {
-        g.DragCurrentAccum = 0.0f;
-        g.DragCurrentAccumDirty = false;
-    }
-    else if (adjust_delta != 0.0f)
-    {
-        g.DragCurrentAccum += adjust_delta;
-        g.DragCurrentAccumDirty = true;
-    }
-
-    if (!g.DragCurrentAccumDirty)
-        return false;
-
-    TYPE v_cur = *v;
-    FLOATTYPE v_old_ref_for_accum_remainder = (FLOATTYPE)0.0f;
-
-    const bool is_power = (power != 1.0f && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) && has_min_max);
-    if (is_power)
-    {
-        // Offset + round to user desired precision, with a curve on the v_min..v_max range to get more precision on one side of the range
-        FLOATTYPE v_old_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
-        FLOATTYPE v_new_norm_curved = v_old_norm_curved + (g.DragCurrentAccum / (v_max - v_min));
-        v_cur = v_min + (TYPE)ImPow(ImSaturate((float)v_new_norm_curved), power) * (v_max - v_min);
-        v_old_ref_for_accum_remainder = v_old_norm_curved;
-    }
-    else
-    {
-        v_cur += (TYPE)g.DragCurrentAccum;
-    }
-
-    // Round to user desired precision based on format string
-    v_cur = RoundScalarWithFormat<TYPE, SIGNEDTYPE>(format, data_type, v_cur);
-
-    // Preserve remainder after rounding has been applied. This also allow slow tweaking of values.
-    g.DragCurrentAccumDirty = false;
-    if (is_power)
-    {
-        FLOATTYPE v_cur_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
-        g.DragCurrentAccum -= (float)(v_cur_norm_curved - v_old_ref_for_accum_remainder);
-    }
-    else
-    {
-        g.DragCurrentAccum -= (float)((SIGNEDTYPE)v_cur - (SIGNEDTYPE)*v);
-    }
-
-    // Lose zero sign for float/double
-    if (v_cur == (TYPE)-0)
-        v_cur = (TYPE)0;
-
-    // Clamp values (handle overflow/wrap-around)
-    if (*v != v_cur && has_min_max)
-    {
-        if (v_cur < v_min || (v_cur > *v && adjust_delta < 0.0f))
-            v_cur = v_min;
-        if (v_cur > v_max || (v_cur < *v && adjust_delta > 0.0f))
-            v_cur = v_max;
-    }
-
-    // Apply result
-    if (*v == v_cur)
-        return false;
-    *v = v_cur;
-    return true;
-}
-
-bool ImGui::DragBehavior(ImGuiID id, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.ActiveId == id)
-    {
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse && !g.IO.MouseDown[0])
-            ClearActiveID();
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav && g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
-            ClearActiveID();
-    }
-    if (g.ActiveId != id)
-        return false;
-
-    switch (data_type)
-    {
-    case ImGuiDataType_S32:    return DragBehaviorT<ImS32, ImS32, float >(data_type, (ImS32*)v,  v_speed, v_min ? *(const ImS32* )v_min : IM_S32_MIN, v_max ? *(const ImS32* )v_max : IM_S32_MAX, format, power);
-    case ImGuiDataType_U32:    return DragBehaviorT<ImU32, ImS32, float >(data_type, (ImU32*)v,  v_speed, v_min ? *(const ImU32* )v_min : IM_U32_MIN, v_max ? *(const ImU32* )v_max : IM_U32_MAX, format, power);
-    case ImGuiDataType_S64:    return DragBehaviorT<ImS64, ImS64, double>(data_type, (ImS64*)v,  v_speed, v_min ? *(const ImS64* )v_min : IM_S64_MIN, v_max ? *(const ImS64* )v_max : IM_S64_MAX, format, power);
-    case ImGuiDataType_U64:    return DragBehaviorT<ImU64, ImS64, double>(data_type, (ImU64*)v,  v_speed, v_min ? *(const ImU64* )v_min : IM_U64_MIN, v_max ? *(const ImU64* )v_max : IM_U64_MAX, format, power);
-    case ImGuiDataType_Float:  return DragBehaviorT<float, float, float >(data_type, (float*)v,  v_speed, v_min ? *(const float* )v_min : -FLT_MAX,   v_max ? *(const float* )v_max : FLT_MAX,    format, power);
-    case ImGuiDataType_Double: return DragBehaviorT<double,double,double>(data_type, (double*)v, v_speed, v_min ? *(const double*)v_min : -DBL_MAX,   v_max ? *(const double*)v_max : DBL_MAX,    format, power);
-    case ImGuiDataType_COUNT:  break;
-    }
-    IM_ASSERT(0);
-    return false;
-}
-
-bool ImGui::DragScalar(const char* label, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    if (power != 1.0f)
-        IM_ASSERT(v_min != NULL && v_max != NULL); // When using a power curve the drag needs to have known bounds
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
-    if (!ItemAdd(total_bb, id, &frame_bb))
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        return false;
-    }
-    const bool hovered = ItemHoverable(frame_bb, id);
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    // Tabbing or CTRL-clicking on Drag turns it into an input box
-    bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, id);
-    if (tab_focus_requested || (hovered && (g.IO.MouseClicked[0] || g.IO.MouseDoubleClicked[0])) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        if (tab_focus_requested || g.IO.KeyCtrl || g.IO.MouseDoubleClicked[0] || g.NavInputId == id)
-        {
-            start_text_input = true;
-            g.ScalarAsInputTextId = 0;
-        }
-    }
-    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
-        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
-
-    // Actual drag behavior
-    ItemSize(total_bb, style.FramePadding.y);
-    const bool value_changed = DragBehavior(id, data_type, v, v_speed, v_min, v_max, format, power);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, style.FrameRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f, 0.5f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::DragScalarN(const char* label, ImGuiDataType data_type, void* v, int components, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= DragScalar("##v", data_type, v, v_speed, v_min, v_max, format, power);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::DragFloat(const char* label, float* v, float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalar(label, ImGuiDataType_Float, v, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat2(const char* label, float v[2], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 2, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat3(const char* label, float v[3], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 3, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat4(const char* label, float v[4], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 4, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloatRange2(const char* label, float* v_current_min, float* v_current_max, float v_speed, float v_min, float v_max, const char* format, const char* format_max, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    PushID(label);
-    BeginGroup();
-    PushMultiItemsWidths(2);
-
-    bool value_changed = DragFloat("##min", v_current_min, v_speed, (v_min >= v_max) ? -FLT_MAX : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format, power);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-    value_changed |= DragFloat("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? FLT_MAX : v_max, format_max ? format_max : format, power);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    PopID();
-    return value_changed;
-}
-
-// NB: v_speed is float to allow adjusting the drag speed with more precision
-bool ImGui::DragInt(const char* label, int* v, float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalar(label, ImGuiDataType_S32, v, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt2(const char* label, int v[2], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 2, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt3(const char* label, int v[3], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 3, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt4(const char* label, int v[4], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 4, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragIntRange2(const char* label, int* v_current_min, int* v_current_max, float v_speed, int v_min, int v_max, const char* format, const char* format_max)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    PushID(label);
-    BeginGroup();
-    PushMultiItemsWidths(2);
-
-    bool value_changed = DragInt("##min", v_current_min, v_speed, (v_min >= v_max) ? INT_MIN : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-    value_changed |= DragInt("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? INT_MAX : v_max, format_max ? format_max : format);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    PopID();
-
-    return value_changed;
-}
-
-void ImGui::PlotEx(ImGuiPlotType plot_type, const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    if (graph_size.x == 0.0f)
-        graph_size.x = CalcItemWidth();
-    if (graph_size.y == 0.0f)
-        graph_size.y = label_size.y + (style.FramePadding.y * 2);
-
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(graph_size.x, graph_size.y));
-    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0));
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, 0, &frame_bb))
-        return;
-    const bool hovered = ItemHoverable(inner_bb, 0);
-
-    // Determine scale from values if not specified
-    if (scale_min == FLT_MAX || scale_max == FLT_MAX)
-    {
-        float v_min = FLT_MAX;
-        float v_max = -FLT_MAX;
-        for (int i = 0; i < values_count; i++)
-        {
-            const float v = values_getter(data, i);
-            v_min = ImMin(v_min, v);
-            v_max = ImMax(v_max, v);
-        }
-        if (scale_min == FLT_MAX)
-            scale_min = v_min;
-        if (scale_max == FLT_MAX)
-            scale_max = v_max;
-    }
-
-    RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-
-    if (values_count > 0)
-    {
-        int res_w = ImMin((int)graph_size.x, values_count) + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
-        int item_count = values_count + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
-
-        // Tooltip on hover
-        int v_hovered = -1;
-        if (hovered)
-        {
-            const float t = ImClamp((g.IO.MousePos.x - inner_bb.Min.x) / (inner_bb.Max.x - inner_bb.Min.x), 0.0f, 0.9999f);
-            const int v_idx = (int)(t * item_count);
-            IM_ASSERT(v_idx >= 0 && v_idx < values_count);
-
-            const float v0 = values_getter(data, (v_idx + values_offset) % values_count);
-            const float v1 = values_getter(data, (v_idx + 1 + values_offset) % values_count);
-            if (plot_type == ImGuiPlotType_Lines)
-                SetTooltip("%d: %8.4g\n%d: %8.4g", v_idx, v0, v_idx+1, v1);
-            else if (plot_type == ImGuiPlotType_Histogram)
-                SetTooltip("%d: %8.4g", v_idx, v0);
-            v_hovered = v_idx;
-        }
-
-        const float t_step = 1.0f / (float)res_w;
-        const float inv_scale = (scale_min == scale_max) ? 0.0f : (1.0f / (scale_max - scale_min));
-
-        float v0 = values_getter(data, (0 + values_offset) % values_count);
-        float t0 = 0.0f;
-        ImVec2 tp0 = ImVec2( t0, 1.0f - ImSaturate((v0 - scale_min) * inv_scale) );                       // Point in the normalized space of our target rectangle
-        float histogram_zero_line_t = (scale_min * scale_max < 0.0f) ? (-scale_min * inv_scale) : (scale_min < 0.0f ? 0.0f : 1.0f);   // Where does the zero line stands
-
-        const ImU32 col_base = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLines : ImGuiCol_PlotHistogram);
-        const ImU32 col_hovered = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLinesHovered : ImGuiCol_PlotHistogramHovered);
-
-        for (int n = 0; n < res_w; n++)
-        {
-            const float t1 = t0 + t_step;
-            const int v1_idx = (int)(t0 * item_count + 0.5f);
-            IM_ASSERT(v1_idx >= 0 && v1_idx < values_count);
-            const float v1 = values_getter(data, (v1_idx + values_offset + 1) % values_count);
-            const ImVec2 tp1 = ImVec2( t1, 1.0f - ImSaturate((v1 - scale_min) * inv_scale) );
-
-            // NB: Draw calls are merged together by the DrawList system. Still, we should render our batch are lower level to save a bit of CPU.
-            ImVec2 pos0 = ImLerp(inner_bb.Min, inner_bb.Max, tp0);
-            ImVec2 pos1 = ImLerp(inner_bb.Min, inner_bb.Max, (plot_type == ImGuiPlotType_Lines) ? tp1 : ImVec2(tp1.x, histogram_zero_line_t));
-            if (plot_type == ImGuiPlotType_Lines)
-            {
-                window->DrawList->AddLine(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
-            }
-            else if (plot_type == ImGuiPlotType_Histogram)
-            {
-                if (pos1.x >= pos0.x + 2.0f)
-                    pos1.x -= 1.0f;
-                window->DrawList->AddRectFilled(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
-            }
-
-            t0 = t1;
-            tp0 = tp1;
-        }
-    }
-
-    // Text overlay
-    if (overlay_text)
-        RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, overlay_text, NULL, NULL, ImVec2(0.5f,0.0f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
-}
-
-struct ImGuiPlotArrayGetterData
-{
-    const float* Values;
-    int Stride;
-
-    ImGuiPlotArrayGetterData(const float* values, int stride) { Values = values; Stride = stride; }
-};
-
-static float Plot_ArrayGetter(void* data, int idx)
-{
-    ImGuiPlotArrayGetterData* plot_data = (ImGuiPlotArrayGetterData*)data;
-    const float v = *(const float*)(const void*)((const unsigned char*)plot_data->Values + (size_t)idx * plot_data->Stride);
-    return v;
-}
-
-void ImGui::PlotLines(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
-{
-    ImGuiPlotArrayGetterData data(values, stride);
-    PlotEx(ImGuiPlotType_Lines, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotLines(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    PlotEx(ImGuiPlotType_Lines, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotHistogram(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
-{
-    ImGuiPlotArrayGetterData data(values, stride);
-    PlotEx(ImGuiPlotType_Histogram, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotHistogram(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    PlotEx(ImGuiPlotType_Histogram, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-// size_arg (for each axis) < 0.0f: align to end, 0.0f: auto, > 0.0f: specified size
-void ImGui::ProgressBar(float fraction, const ImVec2& size_arg, const char* overlay)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    ImVec2 pos = window->DC.CursorPos;
-    ImRect bb(pos, pos + CalcItemSize(size_arg, CalcItemWidth(), g.FontSize + style.FramePadding.y*2.0f));
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    // Render
-    fraction = ImSaturate(fraction);
-    RenderFrame(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-    bb.Expand(ImVec2(-style.FrameBorderSize, -style.FrameBorderSize));
-    const ImVec2 fill_br = ImVec2(ImLerp(bb.Min.x, bb.Max.x, fraction), bb.Max.y);
-    RenderRectFilledRangeH(window->DrawList, bb, GetColorU32(ImGuiCol_PlotHistogram), 0.0f, fraction, style.FrameRounding);
-
-    // Default displaying the fraction as percentage string, but user can override it
-    char overlay_buf[32];
-    if (!overlay)
-    {
-        ImFormatString(overlay_buf, IM_ARRAYSIZE(overlay_buf), "%.0f%%", fraction*100+0.01f);
-        overlay = overlay_buf;
-    }
-
-    ImVec2 overlay_size = CalcTextSize(overlay, NULL);
-    if (overlay_size.x > 0.0f)
-        RenderTextClipped(ImVec2(ImClamp(fill_br.x + style.ItemSpacing.x, bb.Min.x, bb.Max.x - overlay_size.x - style.ItemInnerSpacing.x), bb.Min.y), bb.Max, overlay, NULL, &overlay_size, ImVec2(0.0f,0.5f), &bb);
-}
-
-bool ImGui::Checkbox(const char* label, bool* v)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2, label_size.y + style.FramePadding.y*2)); // We want a square shape to we use Y twice
-    ItemSize(check_bb, style.FramePadding.y);
-
-    ImRect total_bb = check_bb;
-    if (label_size.x > 0)
-        SameLine(0, style.ItemInnerSpacing.x);
-    const ImRect text_bb(window->DC.CursorPos + ImVec2(0,style.FramePadding.y), window->DC.CursorPos + ImVec2(0,style.FramePadding.y) + label_size);
-    if (label_size.x > 0)
-    {
-        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
-        total_bb = ImRect(ImMin(check_bb.Min, text_bb.Min), ImMax(check_bb.Max, text_bb.Max));
-    }
-
-    if (!ItemAdd(total_bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
-    if (pressed)
-    {
-        *v = !(*v);
-        MarkItemEdited(id);
-    }
-
-    RenderNavHighlight(total_bb, id);
-    RenderFrame(check_bb.Min, check_bb.Max, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), true, style.FrameRounding);
-    if (*v)
-    {
-        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
-        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
-        RenderCheckMark(check_bb.Min + ImVec2(pad,pad), GetColorU32(ImGuiCol_CheckMark), check_bb.GetWidth() - pad*2.0f);
-    }
-
-    if (g.LogEnabled)
-        LogRenderedText(&text_bb.Min, *v ? "[x]" : "[ ]");
-    if (label_size.x > 0.0f)
-        RenderText(text_bb.Min, label);
-
-    return pressed;
-}
-
-bool ImGui::CheckboxFlags(const char* label, unsigned int* flags, unsigned int flags_value)
-{
-    bool v = ((*flags & flags_value) == flags_value);
-    bool pressed = Checkbox(label, &v);
-    if (pressed)
-    {
-        if (v)
-            *flags |= flags_value;
-        else
-            *flags &= ~flags_value;
-    }
-
-    return pressed;
-}
-
-bool ImGui::RadioButton(const char* label, bool active)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2-1, label_size.y + style.FramePadding.y*2-1));
-    ItemSize(check_bb, style.FramePadding.y);
-
-    ImRect total_bb = check_bb;
-    if (label_size.x > 0)
-        SameLine(0, style.ItemInnerSpacing.x);
-    const ImRect text_bb(window->DC.CursorPos + ImVec2(0, style.FramePadding.y), window->DC.CursorPos + ImVec2(0, style.FramePadding.y) + label_size);
-    if (label_size.x > 0)
-    {
-        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
-        total_bb.Add(text_bb);
-    }
-
-    if (!ItemAdd(total_bb, id))
-        return false;
-
-    ImVec2 center = check_bb.GetCenter();
-    center.x = (float)(int)center.x + 0.5f;
-    center.y = (float)(int)center.y + 0.5f;
-    const float radius = check_bb.GetHeight() * 0.5f;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
-    if (pressed)
-        MarkItemEdited(id);
-
-    RenderNavHighlight(total_bb, id);
-    window->DrawList->AddCircleFilled(center, radius, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), 16);
-    if (active)
-    {
-        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
-        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
-        window->DrawList->AddCircleFilled(center, radius-pad, GetColorU32(ImGuiCol_CheckMark), 16);
-    }
-
-    if (style.FrameBorderSize > 0.0f)
-    {
-        window->DrawList->AddCircle(center+ImVec2(1,1), radius, GetColorU32(ImGuiCol_BorderShadow), 16, style.FrameBorderSize);
-        window->DrawList->AddCircle(center, radius, GetColorU32(ImGuiCol_Border), 16, style.FrameBorderSize);
-    }
-
-    if (g.LogEnabled)
-        LogRenderedText(&text_bb.Min, active ? "(x)" : "( )");
-    if (label_size.x > 0.0f)
-        RenderText(text_bb.Min, label);
-
-    return pressed;
-}
-
-bool ImGui::RadioButton(const char* label, int* v, int v_button)
-{
-    const bool pressed = RadioButton(label, *v == v_button);
-    if (pressed)
-        *v = v_button;
-    return pressed;
-}
-
-static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end)
-{
-    int line_count = 0;
-    const char* s = text_begin;
-    while (char c = *s++) // We are only matching for \n so we can ignore UTF-8 decoding
-        if (c == '\n')
-            line_count++;
-    s--;
-    if (s[0] != '\n' && s[0] != '\r')
-        line_count++;
-    *out_text_end = s;
-    return line_count;
-}
-
-static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining, ImVec2* out_offset, bool stop_on_new_line)
-{
-    ImFont* font = GImGui->Font;
-    const float line_height = GImGui->FontSize;
-    const float scale = line_height / font->FontSize;
-
-    ImVec2 text_size = ImVec2(0,0);
-    float line_width = 0.0f;
-
-    const ImWchar* s = text_begin;
-    while (s < text_end)
-    {
-        unsigned int c = (unsigned int)(*s++);
-        if (c == '\n')
-        {
-            text_size.x = ImMax(text_size.x, line_width);
-            text_size.y += line_height;
-            line_width = 0.0f;
-            if (stop_on_new_line)
-                break;
-            continue;
-        }
-        if (c == '\r')
-            continue;
-
-        const float char_width = font->GetCharAdvance((unsigned short)c) * scale;
-        line_width += char_width;
-    }
-
-    if (text_size.x < line_width)
-        text_size.x = line_width;
-
-    if (out_offset)
-        *out_offset = ImVec2(line_width, text_size.y + line_height);  // offset allow for the possibility of sitting after a trailing \n
-
-    if (line_width > 0 || text_size.y == 0.0f)                        // whereas size.y will ignore the trailing \n
-        text_size.y += line_height;
-
-    if (remaining)
-        *remaining = s;
-
-    return text_size;
-}
-
-// Wrapper for stb_textedit.h to edit text (our wrapper is for: statically sized buffer, single-line, wchar characters. InputText converts between UTF-8 and wchar)
-namespace ImGuiStb
-{
-
-static int     STB_TEXTEDIT_STRINGLEN(const STB_TEXTEDIT_STRING* obj)                             { return obj->CurLenW; }
-static ImWchar STB_TEXTEDIT_GETCHAR(const STB_TEXTEDIT_STRING* obj, int idx)                      { return obj->TextW[idx]; }
-static float   STB_TEXTEDIT_GETWIDTH(STB_TEXTEDIT_STRING* obj, int line_start_idx, int char_idx)  { ImWchar c = obj->TextW[line_start_idx+char_idx]; if (c == '\n') return STB_TEXTEDIT_GETWIDTH_NEWLINE; return GImGui->Font->GetCharAdvance(c) * (GImGui->FontSize / GImGui->Font->FontSize); }
-static int     STB_TEXTEDIT_KEYTOTEXT(int key)                                                    { return key >= 0x10000 ? 0 : key; }
-static ImWchar STB_TEXTEDIT_NEWLINE = '\n';
-static void    STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, STB_TEXTEDIT_STRING* obj, int line_start_idx)
-{
-    const ImWchar* text = obj->TextW.Data;
-    const ImWchar* text_remaining = NULL;
-    const ImVec2 size = InputTextCalcTextSizeW(text + line_start_idx, text + obj->CurLenW, &text_remaining, NULL, true);
-    r->x0 = 0.0f;
-    r->x1 = size.x;
-    r->baseline_y_delta = size.y;
-    r->ymin = 0.0f;
-    r->ymax = size.y;
-    r->num_chars = (int)(text_remaining - (text + line_start_idx));
-}
-
-static bool is_separator(unsigned int c)                                        { return ImCharIsBlankW(c) || c==',' || c==';' || c=='(' || c==')' || c=='{' || c=='}' || c=='[' || c==']' || c=='|'; }
-static int  is_word_boundary_from_right(STB_TEXTEDIT_STRING* obj, int idx)      { return idx > 0 ? (is_separator( obj->TextW[idx-1] ) && !is_separator( obj->TextW[idx] ) ) : 1; }
-static int  STB_TEXTEDIT_MOVEWORDLEFT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)   { idx--; while (idx >= 0 && !is_word_boundary_from_right(obj, idx)) idx--; return idx < 0 ? 0 : idx; }
-#ifdef __APPLE__    // FIXME: Move setting to IO structure
-static int  is_word_boundary_from_left(STB_TEXTEDIT_STRING* obj, int idx)       { return idx > 0 ? (!is_separator( obj->TextW[idx-1] ) && is_separator( obj->TextW[idx] ) ) : 1; }
-static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_left(obj, idx)) idx++; return idx > len ? len : idx; }
-#else
-static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_right(obj, idx)) idx++; return idx > len ? len : idx; }
-#endif
-#define STB_TEXTEDIT_MOVEWORDLEFT   STB_TEXTEDIT_MOVEWORDLEFT_IMPL    // They need to be #define for stb_textedit.h
-#define STB_TEXTEDIT_MOVEWORDRIGHT  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL
-
-static void STB_TEXTEDIT_DELETECHARS(STB_TEXTEDIT_STRING* obj, int pos, int n)
-{
-    ImWchar* dst = obj->TextW.Data + pos;
-
-    // We maintain our buffer length in both UTF-8 and wchar formats
-    obj->CurLenA -= ImTextCountUtf8BytesFromStr(dst, dst + n);
-    obj->CurLenW -= n;
-
-    // Offset remaining text
-    const ImWchar* src = obj->TextW.Data + pos + n;
-    while (ImWchar c = *src++)
-        *dst++ = c;
-    *dst = '\0';
-}
-
-static bool STB_TEXTEDIT_INSERTCHARS(STB_TEXTEDIT_STRING* obj, int pos, const ImWchar* new_text, int new_text_len)
-{
-    const bool is_resizable = (obj->UserFlags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int text_len = obj->CurLenW;
-    IM_ASSERT(pos <= text_len);
-
-    const int new_text_len_utf8 = ImTextCountUtf8BytesFromStr(new_text, new_text + new_text_len);
-    if (!is_resizable && (new_text_len_utf8 + obj->CurLenA + 1 > obj->BufCapacityA))
-        return false;
-
-    // Grow internal buffer if needed
-    if (new_text_len + text_len + 1 > obj->TextW.Size)
-    {
-        if (!is_resizable)
-            return false;
-        IM_ASSERT(text_len < obj->TextW.Size);
-        obj->TextW.resize(text_len + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1);
-    }
-
-    ImWchar* text = obj->TextW.Data;
-    if (pos != text_len)
-        memmove(text + pos + new_text_len, text + pos, (size_t)(text_len - pos) * sizeof(ImWchar));
-    memcpy(text + pos, new_text, (size_t)new_text_len * sizeof(ImWchar));
-
-    obj->CurLenW += new_text_len;
-    obj->CurLenA += new_text_len_utf8;
-    obj->TextW[obj->CurLenW] = '\0';
-
-    return true;
-}
-
-// We don't use an enum so we can build even with conflicting symbols (if another user of stb_textedit.h leak their STB_TEXTEDIT_K_* symbols)
-#define STB_TEXTEDIT_K_LEFT         0x10000 // keyboard input to move cursor left
-#define STB_TEXTEDIT_K_RIGHT        0x10001 // keyboard input to move cursor right
-#define STB_TEXTEDIT_K_UP           0x10002 // keyboard input to move cursor up
-#define STB_TEXTEDIT_K_DOWN         0x10003 // keyboard input to move cursor down
-#define STB_TEXTEDIT_K_LINESTART    0x10004 // keyboard input to move cursor to start of line
-#define STB_TEXTEDIT_K_LINEEND      0x10005 // keyboard input to move cursor to end of line
-#define STB_TEXTEDIT_K_TEXTSTART    0x10006 // keyboard input to move cursor to start of text
-#define STB_TEXTEDIT_K_TEXTEND      0x10007 // keyboard input to move cursor to end of text
-#define STB_TEXTEDIT_K_DELETE       0x10008 // keyboard input to delete selection or character under cursor
-#define STB_TEXTEDIT_K_BACKSPACE    0x10009 // keyboard input to delete selection or character left of cursor
-#define STB_TEXTEDIT_K_UNDO         0x1000A // keyboard input to perform undo
-#define STB_TEXTEDIT_K_REDO         0x1000B // keyboard input to perform redo
-#define STB_TEXTEDIT_K_WORDLEFT     0x1000C // keyboard input to move cursor left one word
-#define STB_TEXTEDIT_K_WORDRIGHT    0x1000D // keyboard input to move cursor right one word
-#define STB_TEXTEDIT_K_SHIFT        0x20000
-
-#define STB_TEXTEDIT_IMPLEMENTATION
-#include "stb_textedit.h"
-
-}
-
-void ImGuiInputTextState::OnKeyPressed(int key)
-{
-    stb_textedit_key(this, &StbState, key);
-    CursorFollow = true;
-    CursorAnimReset();
-}
-
-ImGuiInputTextCallbackData::ImGuiInputTextCallbackData()
-{
-    memset(this, 0, sizeof(*this));
-}
-
-// Public API to manipulate UTF-8 text
-// We expose UTF-8 to the user (unlike the STB_TEXTEDIT_* functions which are manipulating wchar)
-// FIXME: The existence of this rarely exercised code path is a bit of a nuisance.
-void ImGuiInputTextCallbackData::DeleteChars(int pos, int bytes_count)
-{
-    IM_ASSERT(pos + bytes_count <= BufTextLen);
-    char* dst = Buf + pos;
-    const char* src = Buf + pos + bytes_count;
-    while (char c = *src++)
-        *dst++ = c;
-    *dst = '\0';
-
-    if (CursorPos + bytes_count >= pos)
-        CursorPos -= bytes_count;
-    else if (CursorPos >= pos)
-        CursorPos = pos;
-    SelectionStart = SelectionEnd = CursorPos;
-    BufDirty = true;
-    BufTextLen -= bytes_count;
-}
-
-void ImGuiInputTextCallbackData::InsertChars(int pos, const char* new_text, const char* new_text_end)
-{
-    const bool is_resizable = (Flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int new_text_len = new_text_end ? (int)(new_text_end - new_text) : (int)strlen(new_text);
-    if (new_text_len + BufTextLen >= BufSize)
-    {
-        if (!is_resizable)
-            return;
-
-        // Contrary to STB_TEXTEDIT_INSERTCHARS() this is working in the UTF8 buffer, hence the midly similar code (until we remove the U16 buffer alltogether!)
-        ImGuiContext& g = *GImGui;
-        ImGuiInputTextState* edit_state = &g.InputTextState;
-        IM_ASSERT(edit_state->ID != 0 && g.ActiveId == edit_state->ID);
-        IM_ASSERT(Buf == edit_state->TempBuffer.Data);
-        int new_buf_size = BufTextLen + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1;
-        edit_state->TempBuffer.reserve(new_buf_size + 1);
-        Buf = edit_state->TempBuffer.Data;
-        BufSize = edit_state->BufCapacityA = new_buf_size;
-    }
-
-    if (BufTextLen != pos)
-        memmove(Buf + pos + new_text_len, Buf + pos, (size_t)(BufTextLen - pos));
-    memcpy(Buf + pos, new_text, (size_t)new_text_len * sizeof(char));
-    Buf[BufTextLen + new_text_len] = '\0';
-
-    if (CursorPos >= pos)
-        CursorPos += new_text_len;
-    SelectionStart = SelectionEnd = CursorPos;
-    BufDirty = true;
-    BufTextLen += new_text_len;
-}
-
-// Return false to discard a character.
-static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    unsigned int c = *p_char;
-
-    if (c < 128 && c != ' ' && !isprint((int)(c & 0xFF)))
-    {
-        bool pass = false;
-        pass |= (c == '\n' && (flags & ImGuiInputTextFlags_Multiline));
-        pass |= (c == '\t' && (flags & ImGuiInputTextFlags_AllowTabInput));
-        if (!pass)
-            return false;
-    }
-
-    if (c >= 0xE000 && c <= 0xF8FF) // Filter private Unicode range. I don't imagine anybody would want to input them. GLFW on OSX seems to send private characters for special keys like arrow keys.
-        return false;
-
-    if (flags & (ImGuiInputTextFlags_CharsDecimal | ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase | ImGuiInputTextFlags_CharsNoBlank | ImGuiInputTextFlags_CharsScientific))
-    {
-        if (flags & ImGuiInputTextFlags_CharsDecimal)
-            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsScientific)
-            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/') && (c != 'e') && (c != 'E'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsHexadecimal)
-            if (!(c >= '0' && c <= '9') && !(c >= 'a' && c <= 'f') && !(c >= 'A' && c <= 'F'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsUppercase)
-            if (c >= 'a' && c <= 'z')
-                *p_char = (c += (unsigned int)('A'-'a'));
-
-        if (flags & ImGuiInputTextFlags_CharsNoBlank)
-            if (ImCharIsBlankW(c))
-                return false;
-    }
-
-    if (flags & ImGuiInputTextFlags_CallbackCharFilter)
-    {
-        ImGuiInputTextCallbackData callback_data;
-        memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
-        callback_data.EventFlag = ImGuiInputTextFlags_CallbackCharFilter;
-        callback_data.EventChar = (ImWchar)c;
-        callback_data.Flags = flags;
-        callback_data.UserData = user_data;
-        if (callback(&callback_data) != 0)
-            return false;
-        *p_char = callback_data.EventChar;
-        if (!callback_data.EventChar)
-            return false;
-    }
-
-    return true;
-}
-
-// Edit a string of text
-// - buf_size account for the zero-terminator, so a buf_size of 6 can hold "Hello" but not "Hello!".
-//   This is so we can easily call InputText() on static arrays using ARRAYSIZE() and to match 
-//   Note that in std::string world, capacity() would omit 1 byte used by the zero-terminator.
-// - When active, hold on a privately held copy of the text (and apply back to 'buf'). So changing 'buf' while the InputText is active has no effect.
-// - If you want to use ImGui::InputText() with std::string, see misc/stl/imgui_stl.h
-// (FIXME: Rather messy function partly because we are doing UTF8 > u16 > UTF8 conversions on the go to more easily handle stb_textedit calls. Ideally we should stay in UTF-8 all the time. See https://github.com/nothings/stb/issues/188)
-bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2& size_arg, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* callback_user_data)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackHistory) && (flags & ImGuiInputTextFlags_Multiline)));        // Can't use both together (they both use up/down keys)
-    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackCompletion) && (flags & ImGuiInputTextFlags_AllowTabInput))); // Can't use both together (they both use tab key)
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiIO& io = g.IO;
-    const ImGuiStyle& style = g.Style;
-
-    const bool is_multiline = (flags & ImGuiInputTextFlags_Multiline) != 0;
-    const bool is_editable = (flags & ImGuiInputTextFlags_ReadOnly) == 0;
-    const bool is_password = (flags & ImGuiInputTextFlags_Password) != 0;
-    const bool is_undoable = (flags & ImGuiInputTextFlags_NoUndoRedo) == 0;
-    const bool is_resizable = (flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    if (is_resizable)
-        IM_ASSERT(callback != NULL); // Must provide a callback if you set the ImGuiInputTextFlags_CallbackResize flag!
-
-    if (is_multiline) // Open group before calling GetID() because groups tracks id created within their scope, 
-        BeginGroup();
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), (is_multiline ? GetTextLineHeight() * 8.0f : label_size.y) + style.FramePadding.y*2.0f); // Arbitrary default of 8 lines high for multi-line
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? (style.ItemInnerSpacing.x + label_size.x) : 0.0f, 0.0f));
-
-    ImGuiWindow* draw_window = window;
-    if (is_multiline)
-    {
-        ItemAdd(total_bb, id, &frame_bb);
-        if (!BeginChildFrame(id, frame_bb.GetSize()))
-        {
-            EndChildFrame();
-            EndGroup();
-            return false;
-        }
-        draw_window = GetCurrentWindow();
-        draw_window->DC.NavLayerActiveMaskNext |= draw_window->DC.NavLayerCurrentMask; // This is to ensure that EndChild() will display a navigation highlight
-        size.x -= draw_window->ScrollbarSizes.x;
-    }
-    else
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        if (!ItemAdd(total_bb, id, &frame_bb))
-            return false;
-    }
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if (hovered)
-        g.MouseCursor = ImGuiMouseCursor_TextInput;
-
-    // Password pushes a temporary font with only a fallback glyph
-    if (is_password)
-    {
-        const ImFontGlyph* glyph = g.Font->FindGlyph('*');
-        ImFont* password_font = &g.InputTextPasswordFont;
-        password_font->FontSize = g.Font->FontSize;
-        password_font->Scale = g.Font->Scale;
-        password_font->DisplayOffset = g.Font->DisplayOffset;
-        password_font->Ascent = g.Font->Ascent;
-        password_font->Descent = g.Font->Descent;
-        password_font->ContainerAtlas = g.Font->ContainerAtlas;
-        password_font->FallbackGlyph = glyph;
-        password_font->FallbackAdvanceX = glyph->AdvanceX;
-        IM_ASSERT(password_font->Glyphs.empty() && password_font->IndexAdvanceX.empty() && password_font->IndexLookup.empty());
-        PushFont(password_font);
-    }
-
-    // NB: we are only allowed to access 'edit_state' if we are the active widget.
-    ImGuiInputTextState& edit_state = g.InputTextState;
-
-    const bool focus_requested = FocusableItemRegister(window, id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0);    // Using completion callback disable keyboard tabbing
-    const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent);
-    const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code;
-
-    const bool user_clicked = hovered && io.MouseClicked[0];
-    const bool user_scrolled = is_multiline && g.ActiveId == 0 && edit_state.ID == id && g.ActiveIdPreviousFrame == draw_window->GetIDNoKeepAlive("#SCROLLY");
-    const bool user_nav_input_start = (g.ActiveId != id) && ((g.NavInputId == id) || (g.NavActivateId == id && g.NavInputSource == ImGuiInputSource_NavKeyboard));
-
-    bool clear_active_id = false;
-
-    bool select_all = (g.ActiveId != id) && ((flags & ImGuiInputTextFlags_AutoSelectAll) != 0 || user_nav_input_start) && (!is_multiline);
-    if (focus_requested || user_clicked || user_scrolled || user_nav_input_start)
-    {
-        if (g.ActiveId != id)
-        {
-            // Start edition
-            // Take a copy of the initial buffer value (both in original UTF-8 format and converted to wchar)
-            // From the moment we focused we are ignoring the content of 'buf' (unless we are in read-only mode)
-            const int prev_len_w = edit_state.CurLenW;
-            const int init_buf_len = (int)strlen(buf);
-            edit_state.TextW.resize(buf_size+1);             // wchar count <= UTF-8 count. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
-            edit_state.InitialText.resize(init_buf_len + 1); // UTF-8. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
-            memcpy(edit_state.InitialText.Data, buf, init_buf_len + 1);
-            const char* buf_end = NULL;
-            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, buf_size, buf, NULL, &buf_end);
-            edit_state.CurLenA = (int)(buf_end - buf); // We can't get the result from ImStrncpy() above because it is not UTF-8 aware. Here we'll cut off malformed UTF-8.
-            edit_state.CursorAnimReset();
-
-            // Preserve cursor position and undo/redo stack if we come back to same widget
-            // FIXME: We should probably compare the whole buffer to be on the safety side. Comparing buf (utf8) and edit_state.Text (wchar).
-            const bool recycle_state = (edit_state.ID == id) && (prev_len_w == edit_state.CurLenW);
-            if (recycle_state)
-            {
-                // Recycle existing cursor/selection/undo stack but clamp position
-                // Note a single mouse click will override the cursor/position immediately by calling stb_textedit_click handler.
-                edit_state.CursorClamp();
-            }
-            else
-            {
-                edit_state.ID = id;
-                edit_state.ScrollX = 0.0f;
-                stb_textedit_initialize_state(&edit_state.StbState, !is_multiline);
-                if (!is_multiline && focus_requested_by_code)
-                    select_all = true;
-            }
-            if (flags & ImGuiInputTextFlags_AlwaysInsertMode)
-                edit_state.StbState.insert_mode = true;
-            if (!is_multiline && (focus_requested_by_tab || (user_clicked && io.KeyCtrl)))
-                select_all = true;
-        }
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        if (!is_multiline && !(flags & ImGuiInputTextFlags_CallbackHistory))
-            g.ActiveIdAllowNavDirFlags |= ((1 << ImGuiDir_Up) | (1 << ImGuiDir_Down));
-    }
-    else if (io.MouseClicked[0])
-    {
-        // Release focus when we click outside
-        clear_active_id = true;
-    }
-
-    bool value_changed = false;
-    bool enter_pressed = false;
-    int backup_current_text_length = 0;
-
-    if (g.ActiveId == id)
-    {
-        if (!is_editable && !g.ActiveIdIsJustActivated)
-        {
-            // When read-only we always use the live data passed to the function
-            edit_state.TextW.resize(buf_size+1);
-            const char* buf_end = NULL;
-            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, buf, NULL, &buf_end);
-            edit_state.CurLenA = (int)(buf_end - buf);
-            edit_state.CursorClamp();
-        }
-
-        backup_current_text_length = edit_state.CurLenA;
-        edit_state.BufCapacityA = buf_size;
-        edit_state.UserFlags = flags;
-        edit_state.UserCallback = callback;
-        edit_state.UserCallbackData = callback_user_data;
-
-        // Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.
-        // Down the line we should have a cleaner library-wide concept of Selected vs Active.
-        g.ActiveIdAllowOverlap = !io.MouseDown[0];
-        g.WantTextInputNextFrame = 1;
-
-        // Edit in progress
-        const float mouse_x = (io.MousePos.x - frame_bb.Min.x - style.FramePadding.x) + edit_state.ScrollX;
-        const float mouse_y = (is_multiline ? (io.MousePos.y - draw_window->DC.CursorPos.y - style.FramePadding.y) : (g.FontSize*0.5f));
-
-        const bool is_osx = io.ConfigMacOSXBehaviors;
-        if (select_all || (hovered && !is_osx && io.MouseDoubleClicked[0]))
-        {
-            edit_state.SelectAll();
-            edit_state.SelectedAllMouseLock = true;
-        }
-        else if (hovered && is_osx && io.MouseDoubleClicked[0])
-        {
-            // Double-click select a word only, OS X style (by simulating keystrokes)
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT);
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDRIGHT | STB_TEXTEDIT_K_SHIFT);
-        }
-        else if (io.MouseClicked[0] && !edit_state.SelectedAllMouseLock)
-        {
-            if (hovered)
-            {
-                stb_textedit_click(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
-                edit_state.CursorAnimReset();
-            }
-        }
-        else if (io.MouseDown[0] && !edit_state.SelectedAllMouseLock && (io.MouseDelta.x != 0.0f || io.MouseDelta.y != 0.0f))
-        {
-            stb_textedit_drag(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
-            edit_state.CursorAnimReset();
-            edit_state.CursorFollow = true;
-        }
-        if (edit_state.SelectedAllMouseLock && !io.MouseDown[0])
-            edit_state.SelectedAllMouseLock = false;
-
-        if (io.InputCharacters[0])
-        {
-            // Process text input (before we check for Return because using some IME will effectively send a Return?)
-            // We ignore CTRL inputs, but need to allow ALT+CTRL as some keyboards (e.g. German) use AltGR (which _is_ Alt+Ctrl) to input certain characters.
-            bool ignore_inputs = (io.KeyCtrl && !io.KeyAlt) || (is_osx && io.KeySuper);
-            if (!ignore_inputs && is_editable && !user_nav_input_start)
-                for (int n = 0; n < IM_ARRAYSIZE(io.InputCharacters) && io.InputCharacters[n]; n++)
-                {
-                    // Insert character if they pass filtering
-                    unsigned int c = (unsigned int)io.InputCharacters[n];
-                    if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                        edit_state.OnKeyPressed((int)c);
-                }
-
-            // Consume characters
-            memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters));
-        }
-    }
-
-    bool cancel_edit = false;
-    if (g.ActiveId == id && !g.ActiveIdIsJustActivated && !clear_active_id)
-    {
-        // Handle key-presses
-        const int k_mask = (io.KeyShift ? STB_TEXTEDIT_K_SHIFT : 0);
-        const bool is_osx = io.ConfigMacOSXBehaviors;
-        const bool is_shortcut_key = (is_osx ? (io.KeySuper && !io.KeyCtrl) : (io.KeyCtrl && !io.KeySuper)) && !io.KeyAlt && !io.KeyShift; // OS X style: Shortcuts using Cmd/Super instead of Ctrl
-        const bool is_osx_shift_shortcut = is_osx && io.KeySuper && io.KeyShift && !io.KeyCtrl && !io.KeyAlt;
-        const bool is_wordmove_key_down = is_osx ? io.KeyAlt : io.KeyCtrl;                     // OS X style: Text editing cursor movement using Alt instead of Ctrl
-        const bool is_startend_key_down = is_osx && io.KeySuper && !io.KeyCtrl && !io.KeyAlt;  // OS X style: Line/Text Start and End using Cmd+Arrows instead of Home/End
-        const bool is_ctrl_key_only = io.KeyCtrl && !io.KeyShift && !io.KeyAlt && !io.KeySuper;
-        const bool is_shift_key_only = io.KeyShift && !io.KeyCtrl && !io.KeyAlt && !io.KeySuper;
-
-        const bool is_cut   = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_X)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Delete))) && is_editable && !is_password && (!is_multiline || edit_state.HasSelection());
-        const bool is_copy  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_C)) || (is_ctrl_key_only  && IsKeyPressedMap(ImGuiKey_Insert))) && !is_password && (!is_multiline || edit_state.HasSelection());
-        const bool is_paste = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_V)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Insert))) && is_editable;
-        const bool is_undo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Z)) && is_editable && is_undoable);
-        const bool is_redo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Y)) || (is_osx_shift_shortcut && IsKeyPressedMap(ImGuiKey_Z))) && is_editable && is_undoable;
-
-        if (IsKeyPressedMap(ImGuiKey_LeftArrow))                        { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINESTART : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDLEFT : STB_TEXTEDIT_K_LEFT) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_RightArrow))                  { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINEEND : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDRIGHT : STB_TEXTEDIT_K_RIGHT) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_UpArrow) && is_multiline)     { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMax(draw_window->Scroll.y - g.FontSize, 0.0f)); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTSTART : STB_TEXTEDIT_K_UP) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_DownArrow) && is_multiline)   { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMin(draw_window->Scroll.y + g.FontSize, GetScrollMaxY())); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTEND : STB_TEXTEDIT_K_DOWN) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Home))                        { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_End))                         { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Delete) && is_editable)       { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Backspace) && is_editable)
-        {
-            if (!edit_state.HasSelection())
-            {
-                if (is_wordmove_key_down) edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT|STB_TEXTEDIT_K_SHIFT);
-                else if (is_osx && io.KeySuper && !io.KeyAlt && !io.KeyCtrl) edit_state.OnKeyPressed(STB_TEXTEDIT_K_LINESTART|STB_TEXTEDIT_K_SHIFT);
-            }
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_BACKSPACE | k_mask);
-        }
-        else if (IsKeyPressedMap(ImGuiKey_Enter))
-        {
-            bool ctrl_enter_for_new_line = (flags & ImGuiInputTextFlags_CtrlEnterForNewLine) != 0;
-            if (!is_multiline || (ctrl_enter_for_new_line && !io.KeyCtrl) || (!ctrl_enter_for_new_line && io.KeyCtrl))
-            {
-                enter_pressed = clear_active_id = true;
-            }
-            else if (is_editable)
-            {
-                unsigned int c = '\n'; // Insert new line
-                if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                    edit_state.OnKeyPressed((int)c);
-            }
-        }
-        else if ((flags & ImGuiInputTextFlags_AllowTabInput) && IsKeyPressedMap(ImGuiKey_Tab) && !io.KeyCtrl && !io.KeyShift && !io.KeyAlt && is_editable)
-        {
-            unsigned int c = '\t'; // Insert TAB
-            if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                edit_state.OnKeyPressed((int)c);
-        }
-        else if (IsKeyPressedMap(ImGuiKey_Escape))
-        {
-            clear_active_id = cancel_edit = true;
-        }
-        else if (is_undo || is_redo)
-        {
-            edit_state.OnKeyPressed(is_undo ? STB_TEXTEDIT_K_UNDO : STB_TEXTEDIT_K_REDO);
-            edit_state.ClearSelection();
-        }
-        else if (is_shortcut_key && IsKeyPressedMap(ImGuiKey_A))
-        {
-            edit_state.SelectAll();
-            edit_state.CursorFollow = true;
-        }
-        else if (is_cut || is_copy)
-        {
-            // Cut, Copy
-            if (io.SetClipboardTextFn)
-            {
-                const int ib = edit_state.HasSelection() ? ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end) : 0;
-                const int ie = edit_state.HasSelection() ? ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end) : edit_state.CurLenW;
-                edit_state.TempBuffer.resize((ie-ib) * 4 + 1);
-                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data+ib, edit_state.TextW.Data+ie);
-                SetClipboardText(edit_state.TempBuffer.Data);
-            }
-            if (is_cut)
-            {
-                if (!edit_state.HasSelection())
-                    edit_state.SelectAll();
-                edit_state.CursorFollow = true;
-                stb_textedit_cut(&edit_state, &edit_state.StbState);
-            }
-        }
-        else if (is_paste)
-        {
-            if (const char* clipboard = GetClipboardText())
-            {
-                // Filter pasted buffer
-                const int clipboard_len = (int)strlen(clipboard);
-                ImWchar* clipboard_filtered = (ImWchar*)ImGui::MemAlloc((clipboard_len+1) * sizeof(ImWchar));
-                int clipboard_filtered_len = 0;
-                for (const char* s = clipboard; *s; )
-                {
-                    unsigned int c;
-                    s += ImTextCharFromUtf8(&c, s, NULL);
-                    if (c == 0)
-                        break;
-                    if (c >= 0x10000 || !InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                        continue;
-                    clipboard_filtered[clipboard_filtered_len++] = (ImWchar)c;
-                }
-                clipboard_filtered[clipboard_filtered_len] = 0;
-                if (clipboard_filtered_len > 0) // If everything was filtered, ignore the pasting operation
-                {
-                    stb_textedit_paste(&edit_state, &edit_state.StbState, clipboard_filtered, clipboard_filtered_len);
-                    edit_state.CursorFollow = true;
-                }
-                ImGui::MemFree(clipboard_filtered);
-            }
-        }
-    }
-
-    if (g.ActiveId == id)
-    {
-        const char* apply_new_text = NULL;
-        int apply_new_text_length = 0;
-        if (cancel_edit)
-        {
-            // Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
-            if (is_editable && strcmp(buf, edit_state.InitialText.Data) != 0)
-            {
-                apply_new_text = edit_state.InitialText.Data;
-                apply_new_text_length = edit_state.InitialText.Size - 1;
-            }
-        }
-
-        // When using 'ImGuiInputTextFlags_EnterReturnsTrue' as a special case we reapply the live buffer back to the input buffer before clearing ActiveId, even though strictly speaking it wasn't modified on this frame.
-        // If we didn't do that, code like InputInt() with ImGuiInputTextFlags_EnterReturnsTrue would fail. Also this allows the user to use InputText() with ImGuiInputTextFlags_EnterReturnsTrue without maintaining any user-side storage.
-        bool apply_edit_back_to_user_buffer = !cancel_edit || (enter_pressed && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
-        if (apply_edit_back_to_user_buffer)
-        {
-            // Apply new value immediately - copy modified buffer back
-            // Note that as soon as the input box is active, the in-widget value gets priority over any underlying modification of the input buffer
-            // FIXME: We actually always render 'buf' when calling DrawList->AddText, making the comment above incorrect.
-            // FIXME-OPT: CPU waste to do this every time the widget is active, should mark dirty state from the stb_textedit callbacks.
-            if (is_editable)
-            {
-                edit_state.TempBuffer.resize(edit_state.TextW.Size * 4 + 1);
-                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data, NULL);
-            }
-
-            // User callback
-            if ((flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_CallbackHistory | ImGuiInputTextFlags_CallbackAlways)) != 0)
-            {
-                IM_ASSERT(callback != NULL);
-
-                // The reason we specify the usage semantic (Completion/History) is that Completion needs to disable keyboard TABBING at the moment.
-                ImGuiInputTextFlags event_flag = 0;
-                ImGuiKey event_key = ImGuiKey_COUNT;
-                if ((flags & ImGuiInputTextFlags_CallbackCompletion) != 0 && IsKeyPressedMap(ImGuiKey_Tab))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackCompletion;
-                    event_key = ImGuiKey_Tab;
-                }
-                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_UpArrow))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackHistory;
-                    event_key = ImGuiKey_UpArrow;
-                }
-                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_DownArrow))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackHistory;
-                    event_key = ImGuiKey_DownArrow;
-                }
-                else if (flags & ImGuiInputTextFlags_CallbackAlways)
-                    event_flag = ImGuiInputTextFlags_CallbackAlways;
-
-                if (event_flag)
-                {
-                    ImGuiInputTextCallbackData callback_data;
-                    memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
-                    callback_data.EventFlag = event_flag;
-                    callback_data.Flags = flags;
-                    callback_data.UserData = callback_user_data;
-
-                    callback_data.EventKey = event_key;
-                    callback_data.Buf = edit_state.TempBuffer.Data;
-                    callback_data.BufTextLen = edit_state.CurLenA;
-                    callback_data.BufSize = edit_state.BufCapacityA;
-                    callback_data.BufDirty = false;
-
-                    // We have to convert from wchar-positions to UTF-8-positions, which can be pretty slow (an incentive to ditch the ImWchar buffer, see https://github.com/nothings/stb/issues/188)
-                    ImWchar* text = edit_state.TextW.Data;
-                    const int utf8_cursor_pos = callback_data.CursorPos = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.cursor);
-                    const int utf8_selection_start = callback_data.SelectionStart = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_start);
-                    const int utf8_selection_end = callback_data.SelectionEnd = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_end);
-
-                    // Call user code
-                    callback(&callback_data);
-
-                    // Read back what user may have modified
-                    IM_ASSERT(callback_data.Buf == edit_state.TempBuffer.Data);  // Invalid to modify those fields
-                    IM_ASSERT(callback_data.BufSize == edit_state.BufCapacityA);
-                    IM_ASSERT(callback_data.Flags == flags);
-                    if (callback_data.CursorPos != utf8_cursor_pos)            { edit_state.StbState.cursor = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.CursorPos); edit_state.CursorFollow = true; }
-                    if (callback_data.SelectionStart != utf8_selection_start)  { edit_state.StbState.select_start = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionStart); }
-                    if (callback_data.SelectionEnd != utf8_selection_end)      { edit_state.StbState.select_end = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionEnd); }
-                    if (callback_data.BufDirty)
-                    {
-                        IM_ASSERT(callback_data.BufTextLen == (int)strlen(callback_data.Buf)); // You need to maintain BufTextLen if you change the text!
-                        if (callback_data.BufTextLen > backup_current_text_length && is_resizable)
-                            edit_state.TextW.resize(edit_state.TextW.Size + (callback_data.BufTextLen - backup_current_text_length));
-                        edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, callback_data.Buf, NULL);
-                        edit_state.CurLenA = callback_data.BufTextLen;  // Assume correct length and valid UTF-8 from user, saves us an extra strlen()
-                        edit_state.CursorAnimReset();
-                    }
-                }
-            }
-
-            // Will copy result string if modified
-            if (is_editable && strcmp(edit_state.TempBuffer.Data, buf) != 0)
-            {
-                apply_new_text = edit_state.TempBuffer.Data;
-                apply_new_text_length = edit_state.CurLenA;
-            }
-        }
-
-        // Copy result to user buffer
-        if (apply_new_text)
-        {
-            IM_ASSERT(apply_new_text_length >= 0);
-            if (backup_current_text_length != apply_new_text_length && is_resizable)
-            {
-                ImGuiInputTextCallbackData callback_data;
-                callback_data.EventFlag = ImGuiInputTextFlags_CallbackResize;
-                callback_data.Flags = flags;
-                callback_data.Buf = buf;
-                callback_data.BufTextLen = apply_new_text_length;
-                callback_data.BufSize = ImMax(buf_size, apply_new_text_length + 1);
-                callback_data.UserData = callback_user_data;
-                callback(&callback_data);
-                buf = callback_data.Buf;
-                buf_size = callback_data.BufSize;
-                apply_new_text_length = ImMin(callback_data.BufTextLen, buf_size - 1);
-                IM_ASSERT(apply_new_text_length <= buf_size);
-            }
-
-            // If the underlying buffer resize was denied or not carried to the next frame, apply_new_text_length+1 may be >= buf_size.
-            ImStrncpy(buf, edit_state.TempBuffer.Data, ImMin(apply_new_text_length + 1, buf_size));
-            value_changed = true;
-        }
-
-        // Clear temporary user storage
-        edit_state.UserFlags = 0;
-        edit_state.UserCallback = NULL;
-        edit_state.UserCallbackData = NULL;
-    }
-
-    // Release active ID at the end of the function (so e.g. pressing Return still does a final application of the value)
-    if (clear_active_id && g.ActiveId == id)
-        ClearActiveID();
-
-    // Render
-    // Select which buffer we are going to display. When ImGuiInputTextFlags_NoLiveEdit is set 'buf' might still be the old value. We set buf to NULL to prevent accidental usage from now on.
-    const char* buf_display = (g.ActiveId == id && is_editable) ? edit_state.TempBuffer.Data : buf; buf = NULL;
-
-    // Set upper limit of single-line InputTextEx() at 2 million characters strings. The current pathological worst case is a long line
-    // without any carriage return, which would makes ImFont::RenderText() reserve too many vertices and probably crash. Avoid it altogether.
-    // Note that we only use this limit on single-line InputText(), so a pathologically large line on a InputTextMultiline() would still crash.
-    const int buf_display_max_length = 2 * 1024 * 1024;
-
-    if (!is_multiline)
-    {
-        RenderNavHighlight(frame_bb, id);
-        RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-    }
-
-    const ImVec4 clip_rect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + size.x, frame_bb.Min.y + size.y); // Not using frame_bb.Max because we have adjusted size
-    ImVec2 render_pos = is_multiline ? draw_window->DC.CursorPos : frame_bb.Min + style.FramePadding;
-    ImVec2 text_size(0.f, 0.f);
-    const bool is_currently_scrolling = (edit_state.ID == id && is_multiline && g.ActiveId == draw_window->GetIDNoKeepAlive("#SCROLLY"));
-    if (g.ActiveId == id || is_currently_scrolling)
-    {
-        edit_state.CursorAnim += io.DeltaTime;
-
-        // This is going to be messy. We need to:
-        // - Display the text (this alone can be more easily clipped)
-        // - Handle scrolling, highlight selection, display cursor (those all requires some form of 1d->2d cursor position calculation)
-        // - Measure text height (for scrollbar)
-        // We are attempting to do most of that in **one main pass** to minimize the computation cost (non-negligible for large amount of text) + 2nd pass for selection rendering (we could merge them by an extra refactoring effort)
-        // FIXME: This should occur on buf_display but we'd need to maintain cursor/select_start/select_end for UTF-8.
-        const ImWchar* text_begin = edit_state.TextW.Data;
-        ImVec2 cursor_offset, select_start_offset;
-
-        {
-            // Count lines + find lines numbers straddling 'cursor' and 'select_start' position.
-            const ImWchar* searches_input_ptr[2];
-            searches_input_ptr[0] = text_begin + edit_state.StbState.cursor;
-            searches_input_ptr[1] = NULL;
-            int searches_remaining = 1;
-            int searches_result_line_number[2] = { -1, -999 };
-            if (edit_state.StbState.select_start != edit_state.StbState.select_end)
-            {
-                searches_input_ptr[1] = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
-                searches_result_line_number[1] = -1;
-                searches_remaining++;
-            }
-
-            // Iterate all lines to find our line numbers
-            // In multi-line mode, we never exit the loop until all lines are counted, so add one extra to the searches_remaining counter.
-            searches_remaining += is_multiline ? 1 : 0;
-            int line_count = 0;
-            for (const ImWchar* s = text_begin; *s != 0; s++)
-                if (*s == '\n')
-                {
-                    line_count++;
-                    if (searches_result_line_number[0] == -1 && s >= searches_input_ptr[0]) { searches_result_line_number[0] = line_count; if (--searches_remaining <= 0) break; }
-                    if (searches_result_line_number[1] == -1 && s >= searches_input_ptr[1]) { searches_result_line_number[1] = line_count; if (--searches_remaining <= 0) break; }
-                }
-            line_count++;
-            if (searches_result_line_number[0] == -1) searches_result_line_number[0] = line_count;
-            if (searches_result_line_number[1] == -1) searches_result_line_number[1] = line_count;
-
-            // Calculate 2d position by finding the beginning of the line and measuring distance
-            cursor_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[0], text_begin), searches_input_ptr[0]).x;
-            cursor_offset.y = searches_result_line_number[0] * g.FontSize;
-            if (searches_result_line_number[1] >= 0)
-            {
-                select_start_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[1], text_begin), searches_input_ptr[1]).x;
-                select_start_offset.y = searches_result_line_number[1] * g.FontSize;
-            }
-
-            // Store text height (note that we haven't calculated text width at all, see GitHub issues #383, #1224)
-            if (is_multiline)
-                text_size = ImVec2(size.x, line_count * g.FontSize);
-        }
-
-        // Scroll
-        if (edit_state.CursorFollow)
-        {
-            // Horizontal scroll in chunks of quarter width
-            if (!(flags & ImGuiInputTextFlags_NoHorizontalScroll))
-            {
-                const float scroll_increment_x = size.x * 0.25f;
-                if (cursor_offset.x < edit_state.ScrollX)
-                    edit_state.ScrollX = (float)(int)ImMax(0.0f, cursor_offset.x - scroll_increment_x);
-                else if (cursor_offset.x - size.x >= edit_state.ScrollX)
-                    edit_state.ScrollX = (float)(int)(cursor_offset.x - size.x + scroll_increment_x);
-            }
-            else
-            {
-                edit_state.ScrollX = 0.0f;
-            }
-
-            // Vertical scroll
-            if (is_multiline)
-            {
-                float scroll_y = draw_window->Scroll.y;
-                if (cursor_offset.y - g.FontSize < scroll_y)
-                    scroll_y = ImMax(0.0f, cursor_offset.y - g.FontSize);
-                else if (cursor_offset.y - size.y >= scroll_y)
-                    scroll_y = cursor_offset.y - size.y;
-                draw_window->DC.CursorPos.y += (draw_window->Scroll.y - scroll_y);   // To avoid a frame of lag
-                draw_window->Scroll.y = scroll_y;
-                render_pos.y = draw_window->DC.CursorPos.y;
-            }
-        }
-        edit_state.CursorFollow = false;
-        const ImVec2 render_scroll = ImVec2(edit_state.ScrollX, 0.0f);
-
-        // Draw selection
-        if (edit_state.StbState.select_start != edit_state.StbState.select_end)
-        {
-            const ImWchar* text_selected_begin = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
-            const ImWchar* text_selected_end = text_begin + ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end);
-
-            float bg_offy_up = is_multiline ? 0.0f : -1.0f;    // FIXME: those offsets should be part of the style? they don't play so well with multi-line selection.
-            float bg_offy_dn = is_multiline ? 0.0f : 2.0f;
-            ImU32 bg_color = GetColorU32(ImGuiCol_TextSelectedBg);
-            ImVec2 rect_pos = render_pos + select_start_offset - render_scroll;
-            for (const ImWchar* p = text_selected_begin; p < text_selected_end; )
-            {
-                if (rect_pos.y > clip_rect.w + g.FontSize)
-                    break;
-                if (rect_pos.y < clip_rect.y)
-                {
-                    while (p < text_selected_end)
-                        if (*p++ == '\n')
-                            break;
-                }
-                else
-                {
-                    ImVec2 rect_size = InputTextCalcTextSizeW(p, text_selected_end, &p, NULL, true);
-                    if (rect_size.x <= 0.0f) rect_size.x = (float)(int)(g.Font->GetCharAdvance((unsigned short)' ') * 0.50f); // So we can see selected empty lines
-                    ImRect rect(rect_pos + ImVec2(0.0f, bg_offy_up - g.FontSize), rect_pos +ImVec2(rect_size.x, bg_offy_dn));
-                    rect.ClipWith(clip_rect);
-                    if (rect.Overlaps(clip_rect))
-                        draw_window->DrawList->AddRectFilled(rect.Min, rect.Max, bg_color);
-                }
-                rect_pos.x = render_pos.x - render_scroll.x;
-                rect_pos.y += g.FontSize;
-            }
-        }
-
-        const int buf_display_len = edit_state.CurLenA;
-        if (is_multiline || buf_display_len < buf_display_max_length)
-            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos - render_scroll, GetColorU32(ImGuiCol_Text), buf_display, buf_display + buf_display_len, 0.0f, is_multiline ? NULL : &clip_rect);
-
-        // Draw blinking cursor
-        bool cursor_is_visible = (!g.IO.ConfigCursorBlink) || (g.InputTextState.CursorAnim <= 0.0f) || ImFmod(g.InputTextState.CursorAnim, 1.20f) <= 0.80f;
-        ImVec2 cursor_screen_pos = render_pos + cursor_offset - render_scroll;
-        ImRect cursor_screen_rect(cursor_screen_pos.x, cursor_screen_pos.y-g.FontSize+0.5f, cursor_screen_pos.x+1.0f, cursor_screen_pos.y-1.5f);
-        if (cursor_is_visible && cursor_screen_rect.Overlaps(clip_rect))
-            draw_window->DrawList->AddLine(cursor_screen_rect.Min, cursor_screen_rect.GetBL(), GetColorU32(ImGuiCol_Text));
-
-        // Notify OS of text input position for advanced IME (-1 x offset so that Windows IME can cover our cursor. Bit of an extra nicety.)
-        if (is_editable)
-            g.PlatformImePos = ImVec2(cursor_screen_pos.x - 1, cursor_screen_pos.y - g.FontSize);
-    }
-    else
-    {
-        // Render text only
-        const char* buf_end = NULL;
-        if (is_multiline)
-            text_size = ImVec2(size.x, InputTextCalcTextLenAndLineCount(buf_display, &buf_end) * g.FontSize); // We don't need width
-        else
-            buf_end = buf_display + strlen(buf_display);
-        if (is_multiline || (buf_end - buf_display) < buf_display_max_length)
-            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos, GetColorU32(ImGuiCol_Text), buf_display, buf_end, 0.0f, is_multiline ? NULL : &clip_rect);
-    }
-
-    if (is_multiline)
-    {
-        Dummy(text_size + ImVec2(0.0f, g.FontSize)); // Always add room to scroll an extra line
-        EndChildFrame();
-        EndGroup();
-    }
-
-    if (is_password)
-        PopFont();
-
-    // Log as text
-    if (g.LogEnabled && !is_password)
-        LogRenderedText(&render_pos, buf_display, NULL);
-
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    if (value_changed)
-        MarkItemEdited(id);
-
-    if ((flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0)
-        return enter_pressed;
-    else
-        return value_changed;
-}
-
-bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    IM_ASSERT(!(flags & ImGuiInputTextFlags_Multiline)); // call InputTextMultiline()
-    return InputTextEx(label, buf, (int)buf_size, ImVec2(0,0), flags, callback, user_data);
-}
-
-bool ImGui::InputTextMultiline(const char* label, char* buf, size_t buf_size, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    return InputTextEx(label, buf, (int)buf_size, size, flags | ImGuiInputTextFlags_Multiline, callback, user_data);
-}
-
-// NB: format here must be a simple "%xx" format string with no prefix/suffix (unlike the Drag/Slider functions "format" argument)
-bool ImGui::InputScalar(const char* label, ImGuiDataType data_type, void* data_ptr, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-
-    char buf[64];
-    DataTypeFormatString(buf, IM_ARRAYSIZE(buf), data_type, data_ptr, format);
-
-    bool value_changed = false;
-    if ((extra_flags & (ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsScientific)) == 0)
-        extra_flags |= ImGuiInputTextFlags_CharsDecimal;
-    extra_flags |= ImGuiInputTextFlags_AutoSelectAll;
-
-    if (step != NULL)
-    {
-        const float button_size = GetFrameHeight();
-
-        BeginGroup(); // The only purpose of the group here is to allow the caller to query item data e.g. IsItemActive()
-        PushID(label);
-        PushItemWidth(ImMax(1.0f, CalcItemWidth() - (button_size + style.ItemInnerSpacing.x) * 2));
-        if (InputText("", buf, IM_ARRAYSIZE(buf), extra_flags)) // PushId(label) + "" gives us the expected ID from outside point of view
-            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
-        PopItemWidth();
-
-        // Step buttons
-        SameLine(0, style.ItemInnerSpacing.x);
-        if (ButtonEx("-", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
-        {
-            DataTypeApplyOp(data_type, '-', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
-            value_changed = true;
-        }
-        SameLine(0, style.ItemInnerSpacing.x);
-        if (ButtonEx("+", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
-        {
-            DataTypeApplyOp(data_type, '+', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
-            value_changed = true;
-        }
-        SameLine(0, style.ItemInnerSpacing.x);
-        TextUnformatted(label, FindRenderedTextEnd(label));
-
-        PopID();
-        EndGroup();
-    }
-    else
-    {
-        if (InputText(label, buf, IM_ARRAYSIZE(buf), extra_flags))
-            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
-    }
-
-    return value_changed;
-}
-
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    extra_flags |= ImGuiInputTextFlags_CharsScientific;
-    return InputScalar(label, ImGuiDataType_Float, (void*)v, (void*)(step>0.0f ? &step : NULL), (void*)(step_fast>0.0f ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputDouble(const char* label, double* v, double step, double step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    extra_flags |= ImGuiInputTextFlags_CharsScientific;
-    return InputScalar(label, ImGuiDataType_Double, (void*)v, (void*)(step>0.0 ? &step : NULL), (void*)(step_fast>0.0 ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputInt(const char* label, int* v, int step, int step_fast, ImGuiInputTextFlags extra_flags)
-{
-    // Hexadecimal input provided as a convenience but the flag name is awkward. Typically you'd use InputText() to parse your own data, if you want to handle prefixes.
-    const char* format = (extra_flags & ImGuiInputTextFlags_CharsHexadecimal) ? "%08X" : "%d";
-    return InputScalar(label, ImGuiDataType_S32, (void*)v, (void*)(step>0 ? &step : NULL), (void*)(step_fast>0 ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= InputScalar("##v", data_type, v, step, step_fast, format, extra_flags);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
-}
-
-// Prefer using "const char* format" directly, which is more flexible and consistent with other API.
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputFloat(label, v, step, step_fast, format, extra_flags);
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
-}
-#endif // IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-
-bool ImGui::InputInt2(const char* label, int v[2], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 2, NULL, NULL, "%d", extra_flags);
-}
-
-bool ImGui::InputInt3(const char* label, int v[3], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 3, NULL, NULL, "%d", extra_flags);
-}
-
-bool ImGui::InputInt4(const char* label, int v[4], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 4, NULL, NULL, "%d", extra_flags);
-}
-
-static float CalcMaxPopupHeightFromItemCount(int items_count)
-{
-    ImGuiContext& g = *GImGui;
-    if (items_count <= 0)
-        return FLT_MAX;
-    return (g.FontSize + g.Style.ItemSpacing.y) * items_count - g.Style.ItemSpacing.y + (g.Style.WindowPadding.y * 2);
-}
-
-bool ImGui::BeginCombo(const char* label, const char* preview_value, ImGuiComboFlags flags)
-{
-    // Always consume the SetNextWindowSizeConstraint() call in our early return paths
-    ImGuiContext& g = *GImGui;
-    ImGuiCond backup_next_window_size_constraint = g.NextWindowData.SizeConstraintCond;
-    g.NextWindowData.SizeConstraintCond = 0;
-
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    IM_ASSERT((flags & (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)) != (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)); // Can't use both flags together
-
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    const float arrow_size = (flags & ImGuiComboFlags_NoArrowButton) ? 0.0f : GetFrameHeight();
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const float w = (flags & ImGuiComboFlags_NoPreview) ? arrow_size : CalcItemWidth();
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, id, &frame_bb))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(frame_bb, id, &hovered, &held);
-    bool popup_open = IsPopupOpen(id);
-
-    const ImRect value_bb(frame_bb.Min, frame_bb.Max - ImVec2(arrow_size, 0.0f));
-    const ImU32 frame_col = GetColorU32(hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    if (!(flags & ImGuiComboFlags_NoPreview))
-        window->DrawList->AddRectFilled(frame_bb.Min, ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Max.y), frame_col, style.FrameRounding, ImDrawCornerFlags_Left);
-    if (!(flags & ImGuiComboFlags_NoArrowButton))
-    {
-        window->DrawList->AddRectFilled(ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Min.y), frame_bb.Max, GetColorU32((popup_open || hovered) ? ImGuiCol_ButtonHovered : ImGuiCol_Button), style.FrameRounding, (w <= arrow_size) ? ImDrawCornerFlags_All : ImDrawCornerFlags_Right);
-        RenderArrow(ImVec2(frame_bb.Max.x - arrow_size + style.FramePadding.y, frame_bb.Min.y + style.FramePadding.y), ImGuiDir_Down);
-    }
-    RenderFrameBorder(frame_bb.Min, frame_bb.Max, style.FrameRounding);
-    if (preview_value != NULL && !(flags & ImGuiComboFlags_NoPreview))
-        RenderTextClipped(frame_bb.Min + style.FramePadding, value_bb.Max, preview_value, NULL, NULL, ImVec2(0.0f,0.0f));
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    if ((pressed || g.NavActivateId == id) && !popup_open)
-    {
-        if (window->DC.NavLayerCurrent == 0)
-            window->NavLastIds[0] = id;
-        OpenPopupEx(id);
-        popup_open = true;
-    }
-
-    if (!popup_open)
-        return false;
-
-    if (backup_next_window_size_constraint)
-    {
-        g.NextWindowData.SizeConstraintCond = backup_next_window_size_constraint;
-        g.NextWindowData.SizeConstraintRect.Min.x = ImMax(g.NextWindowData.SizeConstraintRect.Min.x, w);
-    }
-    else
-    {
-        if ((flags & ImGuiComboFlags_HeightMask_) == 0)
-            flags |= ImGuiComboFlags_HeightRegular;
-        IM_ASSERT(ImIsPowerOfTwo(flags & ImGuiComboFlags_HeightMask_));    // Only one
-        int popup_max_height_in_items = -1;
-        if (flags & ImGuiComboFlags_HeightRegular)     popup_max_height_in_items = 8;
-        else if (flags & ImGuiComboFlags_HeightSmall)  popup_max_height_in_items = 4;
-        else if (flags & ImGuiComboFlags_HeightLarge)  popup_max_height_in_items = 20;
-        SetNextWindowSizeConstraints(ImVec2(w, 0.0f), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
-    }
-
-    char name[16];
-    ImFormatString(name, IM_ARRAYSIZE(name), "##Combo_%02d", g.CurrentPopupStack.Size); // Recycle windows based on depth
-
-    // Peak into expected window size so we can position it
-    if (ImGuiWindow* popup_window = FindWindowByName(name))
-        if (popup_window->WasActive)
-        {
-            ImVec2 size_expected = CalcWindowExpectedSize(popup_window);
-            if (flags & ImGuiComboFlags_PopupAlignLeft)
-                popup_window->AutoPosLastDirection = ImGuiDir_Left;
-            ImRect r_outer = GetWindowAllowedExtentRect(popup_window);
-            ImVec2 pos = FindBestWindowPosForPopupEx(frame_bb.GetBL(), size_expected, &popup_window->AutoPosLastDirection, r_outer, frame_bb, ImGuiPopupPositionPolicy_ComboBox);
-            SetNextWindowPos(pos);
-        }
-
-    // Horizontally align ourselves with the framed text
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_Popup | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoSavedSettings;
-    PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(style.FramePadding.x, style.WindowPadding.y));
-    bool ret = Begin(name, NULL, window_flags);
-    PopStyleVar();
-    if (!ret)
-    {
-        EndPopup();
-        IM_ASSERT(0);   // This should never happen as we tested for IsPopupOpen() above
-        return false;
-    }
-    return true;
-}
-
-void ImGui::EndCombo()
-{
-    EndPopup();
-}
-
-// Getter for the old Combo() API: const char*[]
-static bool Items_ArrayGetter(void* data, int idx, const char** out_text)
-{
-    const char* const* items = (const char* const*)data;
-    if (out_text)
-        *out_text = items[idx];
-    return true;
-}
-
-// Getter for the old Combo() API: "item1\0item2\0item3\0"
-static bool Items_SingleStringGetter(void* data, int idx, const char** out_text)
-{
-    // FIXME-OPT: we could pre-compute the indices to fasten this. But only 1 active combo means the waste is limited.
-    const char* items_separated_by_zeros = (const char*)data;
-    int items_count = 0;
-    const char* p = items_separated_by_zeros;
-    while (*p)
-    {
-        if (idx == items_count)
-            break;
-        p += strlen(p) + 1;
-        items_count++;
-    }
-    if (!*p)
-        return false;
-    if (out_text)
-        *out_text = p;
-    return true;
-}
-
-// Old API, prefer using BeginCombo() nowadays if you can.
-bool ImGui::Combo(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int popup_max_height_in_items)
-{
-    ImGuiContext& g = *GImGui;
-
-    // Call the getter to obtain the preview string which is a parameter to BeginCombo()
-    const char* preview_value = NULL;
-    if (*current_item >= 0 && *current_item < items_count)
-        items_getter(data, *current_item, &preview_value);
-
-    // The old Combo() API exposed "popup_max_height_in_items". The new more general BeginCombo() API doesn't have/need it, but we emulate it here.
-    if (popup_max_height_in_items != -1 && !g.NextWindowData.SizeConstraintCond)
-        SetNextWindowSizeConstraints(ImVec2(0,0), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
-
-    if (!BeginCombo(label, preview_value, ImGuiComboFlags_None))
-        return false;
-
-    // Display items
-    // FIXME-OPT: Use clipper (but we need to disable it on the appearing frame to make sure our call to SetItemDefaultFocus() is processed)
-    bool value_changed = false;
-    for (int i = 0; i < items_count; i++)
-    {
-        PushID((void*)(intptr_t)i);
-        const bool item_selected = (i == *current_item);
-        const char* item_text;
-        if (!items_getter(data, i, &item_text))
-            item_text = "*Unknown item*";
-        if (Selectable(item_text, item_selected))
-        {
-            value_changed = true;
-            *current_item = i;
-        }
-        if (item_selected)
-            SetItemDefaultFocus();
-        PopID();
-    }
-
-    EndCombo();
-    return value_changed;
-}
-
-// Combo box helper allowing to pass an array of strings.
-bool ImGui::Combo(const char* label, int* current_item, const char* const items[], int items_count, int height_in_items)
-{
-    const bool value_changed = Combo(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_in_items);
-    return value_changed;
-}
-
-// Combo box helper allowing to pass all items in a single string literal holding multiple zero-terminated items "item1\0item2\0" 
-bool ImGui::Combo(const char* label, int* current_item, const char* items_separated_by_zeros, int height_in_items)
-{
-    int items_count = 0;
-    const char* p = items_separated_by_zeros;       // FIXME-OPT: Avoid computing this, or at least only when combo is open
-    while (*p)
-    {
-        p += strlen(p) + 1;
-        items_count++;
-    }
-    bool value_changed = Combo(label, current_item, Items_SingleStringGetter, (void*)items_separated_by_zeros, items_count, height_in_items);
-    return value_changed;
-}
-
-// Tip: pass an empty label (e.g. "##dummy") then you can use the space to draw other text or image.
-// But you need to make sure the ID is unique, e.g. enclose calls in PushID/PopID or use ##unique_id.
-bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet) // FIXME-OPT: Avoid if vertically clipped.
-        PopClipRect();
-
-    ImGuiID id = window->GetID(label);
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-    ImVec2 size(size_arg.x != 0.0f ? size_arg.x : label_size.x, size_arg.y != 0.0f ? size_arg.y : label_size.y);
-    ImVec2 pos = window->DC.CursorPos;
-    pos.y += window->DC.CurrentLineTextBaseOffset;
-    ImRect bb_inner(pos, pos + size);
-    ItemSize(bb_inner);
-
-    // Fill horizontal space.
-    ImVec2 window_padding = window->WindowPadding;
-    float max_x = (flags & ImGuiSelectableFlags_SpanAllColumns) ? GetWindowContentRegionMax().x : GetContentRegionMax().x;
-    float w_draw = ImMax(label_size.x, window->Pos.x + max_x - window_padding.x - window->DC.CursorPos.x);
-    ImVec2 size_draw((size_arg.x != 0 && !(flags & ImGuiSelectableFlags_DrawFillAvailWidth)) ? size_arg.x : w_draw, size_arg.y != 0.0f ? size_arg.y : size.y);
-    ImRect bb(pos, pos + size_draw);
-    if (size_arg.x == 0.0f || (flags & ImGuiSelectableFlags_DrawFillAvailWidth))
-        bb.Max.x += window_padding.x;
-
-    // Selectables are tightly packed together, we extend the box to cover spacing between selectable.
-    float spacing_L = (float)(int)(style.ItemSpacing.x * 0.5f);
-    float spacing_U = (float)(int)(style.ItemSpacing.y * 0.5f);
-    float spacing_R = style.ItemSpacing.x - spacing_L;
-    float spacing_D = style.ItemSpacing.y - spacing_U;
-    bb.Min.x -= spacing_L;
-    bb.Min.y -= spacing_U;
-    bb.Max.x += spacing_R;
-    bb.Max.y += spacing_D;
-    if (!ItemAdd(bb, (flags & ImGuiSelectableFlags_Disabled) ? 0 : id))
-    {
-        if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
-            PushColumnClipRect();
-        return false;
-    }
-
-    // We use NoHoldingActiveID on menus so user can click and _hold_ on a menu then drag to browse child entries
-    ImGuiButtonFlags button_flags = 0;
-    if (flags & ImGuiSelectableFlags_NoHoldingActiveID) button_flags |= ImGuiButtonFlags_NoHoldingActiveID;
-    if (flags & ImGuiSelectableFlags_PressedOnClick) button_flags |= ImGuiButtonFlags_PressedOnClick;
-    if (flags & ImGuiSelectableFlags_PressedOnRelease) button_flags |= ImGuiButtonFlags_PressedOnRelease;
-    if (flags & ImGuiSelectableFlags_Disabled) button_flags |= ImGuiButtonFlags_Disabled;
-    if (flags & ImGuiSelectableFlags_AllowDoubleClick) button_flags |= ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnDoubleClick;
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, button_flags);
-    if (flags & ImGuiSelectableFlags_Disabled)
-        selected = false;
-
-    // Hovering selectable with mouse updates NavId accordingly so navigation can be resumed with gamepad/keyboard (this doesn't happen on most widgets)
-    if (pressed || hovered)
-        if (!g.NavDisableMouseHover && g.NavWindow == window && g.NavLayer == window->DC.NavLayerCurrent)
-        {
-            g.NavDisableHighlight = true;
-            SetNavID(id, window->DC.NavLayerCurrent);
-        }
-    if (pressed)
-        MarkItemEdited(id);
-
-    // Render
-    if (hovered || selected)
-    {
-        const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
-        RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
-        RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_TypeThin | ImGuiNavHighlightFlags_NoRounding);
-    }
-
-    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
-    {
-        PushColumnClipRect();
-        bb.Max.x -= (GetContentRegionMax().x - max_x);
-    }
-
-    if (flags & ImGuiSelectableFlags_Disabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-    RenderTextClipped(bb_inner.Min, bb.Max, label, NULL, &label_size, ImVec2(0.0f,0.0f));
-    if (flags & ImGuiSelectableFlags_Disabled) PopStyleColor();
-
-    // Automatically close popups
-    if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_DontClosePopups) && !(window->DC.ItemFlags & ImGuiItemFlags_SelectableDontClosePopup))
-        CloseCurrentPopup();
-    return pressed;
-}
-
-bool ImGui::Selectable(const char* label, bool* p_selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
-{
-    if (Selectable(label, *p_selected, flags, size_arg))
-    {
-        *p_selected = !*p_selected;
-        return true;
-    }
-    return false;
-}
-
-// FIXME: Rename to BeginListBox()
-// Helper to calculate the size of a listbox and display a label on the right.
-// Tip: To have a list filling the entire window width, PushItemWidth(-1) and pass an empty label "##empty"
-bool ImGui::ListBoxHeader(const char* label, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    const ImGuiStyle& style = GetStyle();
-    const ImGuiID id = GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
-    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), GetTextLineHeightWithSpacing() * 7.4f + style.ItemSpacing.y);
-    ImVec2 frame_size = ImVec2(size.x, ImMax(size.y, label_size.y));
-    ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + frame_size);
-    ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-    window->DC.LastItemRect = bb; // Forward storage for ListBoxFooter.. dodgy.
-
-    BeginGroup();
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    BeginChildFrame(id, frame_bb.GetSize());
-    return true;
-}
-
-// FIXME: Rename to BeginListBox()
-bool ImGui::ListBoxHeader(const char* label, int items_count, int height_in_items)
-{
-    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
-    // We don't add +0.40f if items_count <= height_in_items. It is slightly dodgy, because it means a dynamic list of items will make the widget resize occasionally when it crosses that size.
-    // I am expecting that someone will come and complain about this behavior in a remote future, then we can advise on a better solution.
-    if (height_in_items < 0)
-        height_in_items = ImMin(items_count, 7);
-    float height_in_items_f = height_in_items < items_count ? (height_in_items + 0.40f) : (height_in_items + 0.00f);
-
-    // We include ItemSpacing.y so that a list sized for the exact number of items doesn't make a scrollbar appears. We could also enforce that by passing a flag to BeginChild().
-    ImVec2 size;
-    size.x = 0.0f;
-    size.y = GetTextLineHeightWithSpacing() * height_in_items_f + GetStyle().ItemSpacing.y;
-    return ListBoxHeader(label, size);
-}
-
-// FIXME: Rename to EndListBox()
-void ImGui::ListBoxFooter()
-{
-    ImGuiWindow* parent_window = GetCurrentWindow()->ParentWindow;
-    const ImRect bb = parent_window->DC.LastItemRect;
-    const ImGuiStyle& style = GetStyle();
-
-    EndChildFrame();
-
-    // Redeclare item size so that it includes the label (we have stored the full size in LastItemRect)
-    // We call SameLine() to restore DC.CurrentLine* data
-    SameLine();
-    parent_window->DC.CursorPos = bb.Min;
-    ItemSize(bb, style.FramePadding.y);
-    EndGroup();
-}
-
-bool ImGui::ListBox(const char* label, int* current_item, const char* const items[], int items_count, int height_items)
-{
-    const bool value_changed = ListBox(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_items);
-    return value_changed;
-}
-
-bool ImGui::ListBox(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int height_in_items)
-{
-    if (!ListBoxHeader(label, items_count, height_in_items))
-        return false;
-
-    // Assume all items have even height (= 1 line of text). If you need items of different or variable sizes you can create a custom version of ListBox() in your code without using the clipper.
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    ImGuiListClipper clipper(items_count, GetTextLineHeightWithSpacing()); // We know exactly our line height here so we pass it as a minor optimization, but generally you don't need to.
-    while (clipper.Step())
-        for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++)
-        {
-            const bool item_selected = (i == *current_item);
-            const char* item_text;
-            if (!items_getter(data, i, &item_text))
-                item_text = "*Unknown item*";
-
-            PushID(i);
-            if (Selectable(item_text, item_selected))
-            {
-                *current_item = i;
-                value_changed = true;
-            }
-            if (item_selected)
-                SetItemDefaultFocus();
-            PopID();
-        }
-    ListBoxFooter();
-    if (value_changed)
-        MarkItemEdited(g.CurrentWindow->DC.LastItemId);
-
-    return value_changed;
-}
-
-bool ImGui::MenuItem(const char* label, const char* shortcut, bool selected, bool enabled)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    ImGuiStyle& style = g.Style;
-    ImVec2 pos = window->DC.CursorPos;
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    ImGuiSelectableFlags flags = ImGuiSelectableFlags_PressedOnRelease | (enabled ? 0 : ImGuiSelectableFlags_Disabled);
-    bool pressed;
-    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
-    {
-        // Mimic the exact layout spacing of BeginMenu() to allow MenuItem() inside a menu bar, which is a little misleading but may be useful
-        // Note that in this situation we render neither the shortcut neither the selected tick mark
-        float w = label_size.x;
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
-        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
-        pressed = Selectable(label, false, flags, ImVec2(w, 0.0f));
-        PopStyleVar();
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
-    }
-    else
-    {
-        ImVec2 shortcut_size = shortcut ? CalcTextSize(shortcut, NULL) : ImVec2(0.0f, 0.0f);
-        float w = window->MenuColumns.DeclColumns(label_size.x, shortcut_size.x, (float)(int)(g.FontSize * 1.20f)); // Feedback for next frame
-        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
-        pressed = Selectable(label, false, flags | ImGuiSelectableFlags_DrawFillAvailWidth, ImVec2(w, 0.0f));
-        if (shortcut_size.x > 0.0f)
-        {
-            PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-            RenderText(pos + ImVec2(window->MenuColumns.Pos[1] + extra_w, 0.0f), shortcut, NULL, false);
-            PopStyleColor();
-        }
-        if (selected)
-            RenderCheckMark(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.40f, g.FontSize * 0.134f * 0.5f), GetColorU32(enabled ? ImGuiCol_Text : ImGuiCol_TextDisabled), g.FontSize  * 0.866f);
-    }
-    return pressed;
-}
-
-bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected, bool enabled)
-{
-    if (MenuItem(label, shortcut, p_selected ? *p_selected : false, enabled))
-    {
-        if (p_selected)
-            *p_selected = !*p_selected;
-        return true;
-    }
-    return false;
-}
-
-// For the main menu bar, which cannot be moved, we honor g.Style.DisplaySafeAreaPadding to ensure text can be visible on a TV set.
-bool ImGui::BeginMainMenuBar()
-{
-    ImGuiContext& g = *GImGui;
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(g.Style.DisplaySafeAreaPadding.x, ImMax(g.Style.DisplaySafeAreaPadding.y - g.Style.FramePadding.y, 0.0f));
-    SetNextWindowPos(ImVec2(0.0f, 0.0f));
-    SetNextWindowSize(ImVec2(g.IO.DisplaySize.x, g.NextWindowData.MenuBarOffsetMinVal.y + g.FontBaseSize + g.Style.FramePadding.y));
-    PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
-    PushStyleVar(ImGuiStyleVar_WindowMinSize, ImVec2(0,0));
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_MenuBar;
-    bool is_open = Begin("##MainMenuBar", NULL, window_flags) && BeginMenuBar();
-    PopStyleVar(2);
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(0.0f, 0.0f);
-    if (!is_open)
-    {
-        End();
-        return false;
-    }
-    return true;
-}
-
-void ImGui::EndMainMenuBar()
-{
-    EndMenuBar();
-
-    // When the user has left the menu layer (typically: closed menus through activation of an item), we restore focus to the previous window
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow == g.NavWindow && g.NavLayer == 0)
-        FocusFrontMostActiveWindowIgnoringOne(g.NavWindow);
-
-    End();
-}
-
-bool ImGui::BeginMenuBar()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-    if (!(window->Flags & ImGuiWindowFlags_MenuBar))
-        return false;
-
-    IM_ASSERT(!window->DC.MenuBarAppending);
-    BeginGroup(); // Backup position on layer 0
-    PushID("##menubar");
-
-    // We don't clip with current window clipping rectangle as it is already set to the area below. However we clip with window full rect.
-    // We remove 1 worth of rounding to Max.x to that text in long menus and small windows don't tend to display over the lower-right rounded area, which looks particularly glitchy.
-    ImRect bar_rect = window->MenuBarRect();
-    ImRect clip_rect(ImFloor(bar_rect.Min.x + 0.5f), ImFloor(bar_rect.Min.y + window->WindowBorderSize + 0.5f), ImFloor(ImMax(bar_rect.Min.x, bar_rect.Max.x - window->WindowRounding) + 0.5f), ImFloor(bar_rect.Max.y + 0.5f));
-    clip_rect.ClipWith(window->OuterRectClipped);
-    PushClipRect(clip_rect.Min, clip_rect.Max, false);
-
-    window->DC.CursorPos = ImVec2(bar_rect.Min.x + window->DC.MenuBarOffset.x, bar_rect.Min.y + window->DC.MenuBarOffset.y);
-    window->DC.LayoutType = ImGuiLayoutType_Horizontal;
-    window->DC.NavLayerCurrent++;
-    window->DC.NavLayerCurrentMask <<= 1;
-    window->DC.MenuBarAppending = true;
-    AlignTextToFramePadding();
-    return true;
-}
-
-void ImGui::EndMenuBar()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-    ImGuiContext& g = *GImGui;
-
-    // Nav: When a move request within one of our child menu failed, capture the request to navigate among our siblings.
-    if (NavMoveRequestButNoResultYet() && (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right) && (g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
-    {
-        ImGuiWindow* nav_earliest_child = g.NavWindow;
-        while (nav_earliest_child->ParentWindow && (nav_earliest_child->ParentWindow->Flags & ImGuiWindowFlags_ChildMenu))
-            nav_earliest_child = nav_earliest_child->ParentWindow;
-        if (nav_earliest_child->ParentWindow == window && nav_earliest_child->DC.ParentLayoutType == ImGuiLayoutType_Horizontal && g.NavMoveRequestForward == ImGuiNavForward_None)
-        {
-            // To do so we claim focus back, restore NavId and then process the movement request for yet another frame.
-            // This involve a one-frame delay which isn't very problematic in this situation. We could remove it by scoring in advance for multiple window (probably not worth the hassle/cost)
-            IM_ASSERT(window->DC.NavLayerActiveMaskNext & 0x02); // Sanity check
-            FocusWindow(window);
-            SetNavIDWithRectRel(window->NavLastIds[1], 1, window->NavRectRel[1]);
-            g.NavLayer = 1;
-            g.NavDisableHighlight = true; // Hide highlight for the current frame so we don't see the intermediary selection.
-            g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
-            NavMoveRequestCancel();
-        }
-    }
-
-    IM_ASSERT(window->Flags & ImGuiWindowFlags_MenuBar);
-    IM_ASSERT(window->DC.MenuBarAppending);
-    PopClipRect();
-    PopID();
-    window->DC.MenuBarOffset.x = window->DC.CursorPos.x - window->MenuBarRect().Min.x; // Save horizontal position so next append can reuse it. This is kinda equivalent to a per-layer CursorPos.
-    window->DC.GroupStack.back().AdvanceCursor = false;
-    EndGroup(); // Restore position on layer 0
-    window->DC.LayoutType = ImGuiLayoutType_Vertical;
-    window->DC.NavLayerCurrent--;
-    window->DC.NavLayerCurrentMask >>= 1;
-    window->DC.MenuBarAppending = false;
-}
-
-bool ImGui::BeginMenu(const char* label, bool enabled)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    bool pressed;
-    bool menu_is_open = IsPopupOpen(id);
-    bool menuset_is_open = !(window->Flags & ImGuiWindowFlags_Popup) && (g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].OpenParentId == window->IDStack.back());
-    ImGuiWindow* backed_nav_window = g.NavWindow;
-    if (menuset_is_open)
-        g.NavWindow = window;  // Odd hack to allow hovering across menus of a same menu-set (otherwise we wouldn't be able to hover parent)
-
-    // The reference position stored in popup_pos will be used by Begin() to find a suitable position for the child menu (using FindBestWindowPosForPopup).
-    ImVec2 popup_pos, pos = window->DC.CursorPos;
-    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
-    {
-        // Menu inside an horizontal menu bar
-        // Selectable extend their highlight by half ItemSpacing in each direction.
-        // For ChildMenu, the popup position will be overwritten by the call to FindBestWindowPosForPopup() in Begin()
-        popup_pos = ImVec2(pos.x - window->WindowPadding.x, pos.y - style.FramePadding.y + window->MenuBarHeight());
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
-        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
-        float w = label_size.x;
-        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
-        PopStyleVar();
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
-    }
-    else
-    {
-        // Menu inside a menu
-        popup_pos = ImVec2(pos.x, pos.y - style.WindowPadding.y);
-        float w = window->MenuColumns.DeclColumns(label_size.x, 0.0f, (float)(int)(g.FontSize * 1.20f)); // Feedback to next frame
-        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
-        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | ImGuiSelectableFlags_DrawFillAvailWidth | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
-        if (!enabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-        RenderArrow(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.30f, 0.0f), ImGuiDir_Right);
-        if (!enabled) PopStyleColor();
-    }
-
-    const bool hovered = enabled && ItemHoverable(window->DC.LastItemRect, id);
-    if (menuset_is_open)
-        g.NavWindow = backed_nav_window;
-
-    bool want_open = false, want_close = false;
-    if (window->DC.LayoutType == ImGuiLayoutType_Vertical) // (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
-    {
-        // Implement http://bjk5.com/post/44698559168/breaking-down-amazons-mega-dropdown to avoid using timers, so menus feels more reactive.
-        bool moving_within_opened_triangle = false;
-        if (g.HoveredWindow == window && g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].ParentWindow == window && !(window->Flags & ImGuiWindowFlags_MenuBar))
-        {
-            if (ImGuiWindow* next_window = g.OpenPopupStack[g.CurrentPopupStack.Size].Window)
-            {
-                ImRect next_window_rect = next_window->Rect();
-                ImVec2 ta = g.IO.MousePos - g.IO.MouseDelta;
-                ImVec2 tb = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetTL() : next_window_rect.GetTR();
-                ImVec2 tc = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetBL() : next_window_rect.GetBR();
-                float extra = ImClamp(ImFabs(ta.x - tb.x) * 0.30f, 5.0f, 30.0f); // add a bit of extra slack.
-                ta.x += (window->Pos.x < next_window->Pos.x) ? -0.5f : +0.5f;   // to avoid numerical issues
-                tb.y = ta.y + ImMax((tb.y - extra) - ta.y, -100.0f);            // triangle is maximum 200 high to limit the slope and the bias toward large sub-menus // FIXME: Multiply by fb_scale?
-                tc.y = ta.y + ImMin((tc.y + extra) - ta.y, +100.0f);
-                moving_within_opened_triangle = ImTriangleContainsPoint(ta, tb, tc, g.IO.MousePos);
-                //window->DrawList->PushClipRectFullScreen(); window->DrawList->AddTriangleFilled(ta, tb, tc, moving_within_opened_triangle ? IM_COL32(0,128,0,128) : IM_COL32(128,0,0,128)); window->DrawList->PopClipRect(); // Debug
-            }
-        }
-
-        want_close = (menu_is_open && !hovered && g.HoveredWindow == window && g.HoveredIdPreviousFrame != 0 && g.HoveredIdPreviousFrame != id && !moving_within_opened_triangle);
-        want_open = (!menu_is_open && hovered && !moving_within_opened_triangle) || (!menu_is_open && hovered && pressed);
-
-        if (g.NavActivateId == id)
-        {
-            want_close = menu_is_open;
-            want_open = !menu_is_open;
-        }
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right) // Nav-Right to open
-        {
-            want_open = true;
-            NavMoveRequestCancel();
-        }
-    }
-    else
-    {
-        // Menu bar
-        if (menu_is_open && pressed && menuset_is_open) // Click an open menu again to close it
-        {
-            want_close = true;
-            want_open = menu_is_open = false;
-        }
-        else if (pressed || (hovered && menuset_is_open && !menu_is_open)) // First click to open, then hover to open others
-        {
-            want_open = true;
-        }
-        else if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Down) // Nav-Down to open
-        {
-            want_open = true;
-            NavMoveRequestCancel();
-        }
-    }
-
-    if (!enabled) // explicitly close if an open menu becomes disabled, facilitate users code a lot in pattern such as 'if (BeginMenu("options", has_object)) { ..use object.. }'
-        want_close = true;
-    if (want_close && IsPopupOpen(id))
-        ClosePopupToLevel(g.CurrentPopupStack.Size);
-
-    if (!menu_is_open && want_open && g.OpenPopupStack.Size > g.CurrentPopupStack.Size)
-    {
-        // Don't recycle same menu level in the same frame, first close the other menu and yield for a frame.
-        OpenPopup(label);
-        return false;
-    }
-
-    menu_is_open |= want_open;
-    if (want_open)
-        OpenPopup(label);
-
-    if (menu_is_open)
-    {
-        // Sub-menus are ChildWindow so that mouse can be hovering across them (otherwise top-most popup menu would steal focus and not allow hovering on parent menu)
-        SetNextWindowPos(popup_pos, ImGuiCond_Always);
-        ImGuiWindowFlags flags = ImGuiWindowFlags_ChildMenu | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoNavFocus;
-        if (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
-            flags |= ImGuiWindowFlags_ChildWindow;
-        menu_is_open = BeginPopupEx(id, flags); // menu_is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-    }
-
-    return menu_is_open;
-}
-
-void ImGui::EndMenu()
-{
-    // Nav: When a left move request _within our child menu_ failed, close the menu.
-    // A menu doesn't close itself because EndMenuBar() wants the catch the last Left<>Right inputs.
-    // However, it means that with the current code, a BeginMenu() from outside another menu or a menu-bar won't be closable with the Left direction.
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    if (g.NavWindow && g.NavWindow->ParentWindow == window && g.NavMoveDir == ImGuiDir_Left && NavMoveRequestButNoResultYet() && window->DC.LayoutType == ImGuiLayoutType_Vertical)
-    {
-        ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-        NavMoveRequestCancel();
-    }
-
-    EndPopup();
-}
-
-// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-void ImGui::ColorTooltip(const char* text, const float* col, ImGuiColorEditFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-
-    int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
-    BeginTooltipEx(0, true);
-
-    const char* text_end = text ? FindRenderedTextEnd(text, NULL) : text;
-    if (text_end > text)
-    {
-        TextUnformatted(text, text_end);
-        Separator();
-    }
-
-    ImVec2 sz(g.FontSize * 3 + g.Style.FramePadding.y * 2, g.FontSize * 3 + g.Style.FramePadding.y * 2);
-    ColorButton("##preview", ImVec4(col[0], col[1], col[2], col[3]), (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf)) | ImGuiColorEditFlags_NoTooltip, sz);
-    SameLine();
-    if (flags & ImGuiColorEditFlags_NoAlpha)
-        Text("#%02X%02X%02X\nR: %d, G: %d, B: %d\n(%.3f, %.3f, %.3f)", cr, cg, cb, cr, cg, cb, col[0], col[1], col[2]);
-    else
-        Text("#%02X%02X%02X%02X\nR:%d, G:%d, B:%d, A:%d\n(%.3f, %.3f, %.3f, %.3f)", cr, cg, cb, ca, cr, cg, cb, ca, col[0], col[1], col[2], col[3]);
-    EndTooltip();
-}
-
-static inline ImU32 ImAlphaBlendColor(ImU32 col_a, ImU32 col_b)
-{
-    float t = ((col_b >> IM_COL32_A_SHIFT) & 0xFF) / 255.f;
-    int r = ImLerp((int)(col_a >> IM_COL32_R_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_R_SHIFT) & 0xFF, t);
-    int g = ImLerp((int)(col_a >> IM_COL32_G_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_G_SHIFT) & 0xFF, t);
-    int b = ImLerp((int)(col_a >> IM_COL32_B_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_B_SHIFT) & 0xFF, t);
-    return IM_COL32(r, g, b, 0xFF);
-}
-
-// NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Caller currently responsible for avoiding that.
-// I spent a non reasonable amount of time trying to getting this right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and offsets, and eventually gave up... probably more reasonable to disable rounding alltogether.
-void ImGui::RenderColorRectWithAlphaCheckerboard(ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, int rounding_corners_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF)
-    {
-        ImU32 col_bg1 = GetColorU32(ImAlphaBlendColor(IM_COL32(204,204,204,255), col));
-        ImU32 col_bg2 = GetColorU32(ImAlphaBlendColor(IM_COL32(128,128,128,255), col));
-        window->DrawList->AddRectFilled(p_min, p_max, col_bg1, rounding, rounding_corners_flags);
-
-        int yi = 0;
-        for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++)
-        {
-            float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y);
-            if (y2 <= y1)
-                continue;
-            for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f)
-            {
-                float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x);
-                if (x2 <= x1)
-                    continue;
-                int rounding_corners_flags_cell = 0;
-                if (y1 <= p_min.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopRight; }
-                if (y2 >= p_max.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotRight; }
-                rounding_corners_flags_cell &= rounding_corners_flags;
-                window->DrawList->AddRectFilled(ImVec2(x1,y1), ImVec2(x2,y2), col_bg2, rounding_corners_flags_cell ? rounding : 0.0f, rounding_corners_flags_cell);
-            }
-        }
-    }
-    else
-    {
-        window->DrawList->AddRectFilled(p_min, p_max, col, rounding, rounding_corners_flags);
-    }
-}
-
-void ImGui::SetColorEditOptions(ImGuiColorEditFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    if ((flags & ImGuiColorEditFlags__InputsMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__InputsMask;
-    if ((flags & ImGuiColorEditFlags__DataTypeMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__DataTypeMask;
-    if ((flags & ImGuiColorEditFlags__PickerMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__PickerMask;
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__InputsMask)));   // Check only 1 option is selected
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__DataTypeMask))); // Check only 1 option is selected
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask)));   // Check only 1 option is selected
-    g.ColorEditOptions = flags;
-}
-
-// A little colored square. Return true when clicked.
-// FIXME: May want to display/ignore the alpha component in the color display? Yet show it in the tooltip.
-// 'desc_id' is not called 'label' because we don't display it next to the button, but only in the tooltip.
-bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFlags flags, ImVec2 size)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiID id = window->GetID(desc_id);
-    float default_size = GetFrameHeight();
-    if (size.x == 0.0f)
-        size.x = default_size;
-    if (size.y == 0.0f)
-        size.y = default_size;
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    if (flags & ImGuiColorEditFlags_NoAlpha)
-        flags &= ~(ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf);
-
-    ImVec4 col_without_alpha(col.x, col.y, col.z, 1.0f);
-    float grid_step = ImMin(size.x, size.y) / 2.99f;
-    float rounding = ImMin(g.Style.FrameRounding, grid_step * 0.5f);
-    ImRect bb_inner = bb;
-    float off = -0.75f; // The border (using Col_FrameBg) tends to look off when color is near-opaque and rounding is enabled. This offset seemed like a good middle ground to reduce those artifacts.
-    bb_inner.Expand(off);
-    if ((flags & ImGuiColorEditFlags_AlphaPreviewHalf) && col.w < 1.0f)
-    {
-        float mid_x = (float)(int)((bb_inner.Min.x + bb_inner.Max.x) * 0.5f + 0.5f);
-        RenderColorRectWithAlphaCheckerboard(ImVec2(bb_inner.Min.x + grid_step, bb_inner.Min.y), bb_inner.Max, GetColorU32(col), grid_step, ImVec2(-grid_step + off, off), rounding, ImDrawCornerFlags_TopRight| ImDrawCornerFlags_BotRight);
-        window->DrawList->AddRectFilled(bb_inner.Min, ImVec2(mid_x, bb_inner.Max.y), GetColorU32(col_without_alpha), rounding, ImDrawCornerFlags_TopLeft|ImDrawCornerFlags_BotLeft);
-    }
-    else
-    {
-        // Because GetColorU32() multiplies by the global style Alpha and we don't want to display a checkerboard if the source code had no alpha
-        ImVec4 col_source = (flags & ImGuiColorEditFlags_AlphaPreview) ? col : col_without_alpha;
-        if (col_source.w < 1.0f)
-            RenderColorRectWithAlphaCheckerboard(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), grid_step, ImVec2(off, off), rounding);
-        else
-            window->DrawList->AddRectFilled(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), rounding, ImDrawCornerFlags_All);
-    }
-    RenderNavHighlight(bb, id);
-    if (g.Style.FrameBorderSize > 0.0f)
-        RenderFrameBorder(bb.Min, bb.Max, rounding);
-    else
-        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), rounding); // Color button are often in need of some sort of border
-
-    // Drag and Drop Source
-    // NB: The ActiveId test is merely an optional micro-optimization, BeginDragDropSource() does the same test.
-    if (g.ActiveId == id && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropSource())
-    {
-        if (flags & ImGuiColorEditFlags_NoAlpha)
-            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F, &col, sizeof(float) * 3, ImGuiCond_Once);
-        else
-            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F, &col, sizeof(float) * 4, ImGuiCond_Once);
-        ColorButton(desc_id, col, flags);
-        SameLine();
-        TextUnformatted("Color");
-        EndDragDropSource();
-    }
-
-    // Tooltip
-    if (!(flags & ImGuiColorEditFlags_NoTooltip) && hovered)
-        ColorTooltip(desc_id, &col.x, flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf));
-
-    if (pressed)
-        MarkItemEdited(id);
-
-    return pressed;
-}
-
-bool ImGui::ColorEdit3(const char* label, float col[3], ImGuiColorEditFlags flags)
-{
-    return ColorEdit4(label, col, flags | ImGuiColorEditFlags_NoAlpha);
-}
-
-void ImGui::ColorEditOptionsPopup(const float* col, ImGuiColorEditFlags flags)
-{
-    bool allow_opt_inputs = !(flags & ImGuiColorEditFlags__InputsMask);
-    bool allow_opt_datatype = !(flags & ImGuiColorEditFlags__DataTypeMask);
-    if ((!allow_opt_inputs && !allow_opt_datatype) || !BeginPopup("context"))
-        return;
-    ImGuiContext& g = *GImGui;
-    ImGuiColorEditFlags opts = g.ColorEditOptions;
-    if (allow_opt_inputs)
-    {
-        if (RadioButton("RGB", (opts & ImGuiColorEditFlags_RGB) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_RGB;
-        if (RadioButton("HSV", (opts & ImGuiColorEditFlags_HSV) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HSV;
-        if (RadioButton("HEX", (opts & ImGuiColorEditFlags_HEX) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HEX;
-    }
-    if (allow_opt_datatype)
-    {
-        if (allow_opt_inputs) Separator();
-        if (RadioButton("0..255",     (opts & ImGuiColorEditFlags_Uint8) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Uint8;
-        if (RadioButton("0.00..1.00", (opts & ImGuiColorEditFlags_Float) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Float;
-    }
-
-    if (allow_opt_inputs || allow_opt_datatype)
-        Separator();
-    if (Button("Copy as..", ImVec2(-1,0)))
-        OpenPopup("Copy");
-    if (BeginPopup("Copy"))
-    {
-        int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
-        char buf[64];
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%.3ff, %.3ff, %.3ff, %.3ff)", col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%d,%d,%d,%d)", cr, cg, cb, ca);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        if (flags & ImGuiColorEditFlags_NoAlpha)
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X", cr, cg, cb);
-        else
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X%02X", cr, cg, cb, ca);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        EndPopup();
-    }
-
-    g.ColorEditOptions = opts;
-    EndPopup();
-}
-
-void ImGui::ColorPickerOptionsPopup(const float* ref_col, ImGuiColorEditFlags flags)
-{
-    bool allow_opt_picker = !(flags & ImGuiColorEditFlags__PickerMask);
-    bool allow_opt_alpha_bar = !(flags & ImGuiColorEditFlags_NoAlpha) && !(flags & ImGuiColorEditFlags_AlphaBar);
-    if ((!allow_opt_picker && !allow_opt_alpha_bar) || !ImGui::BeginPopup("context"))
-        return;
-    ImGuiContext& g = *GImGui;
-    if (allow_opt_picker)
-    {
-        ImVec2 picker_size(g.FontSize * 8, ImMax(g.FontSize * 8 - (ImGui::GetFrameHeight() + g.Style.ItemInnerSpacing.x), 1.0f)); // FIXME: Picker size copied from main picker function
-        ImGui::PushItemWidth(picker_size.x);
-        for (int picker_type = 0; picker_type < 2; picker_type++)
-        {
-            // Draw small/thumbnail version of each picker type (over an invisible button for selection)
-            if (picker_type > 0) ImGui::Separator();
-            ImGui::PushID(picker_type);
-            ImGuiColorEditFlags picker_flags = ImGuiColorEditFlags_NoInputs|ImGuiColorEditFlags_NoOptions|ImGuiColorEditFlags_NoLabel|ImGuiColorEditFlags_NoSidePreview|(flags & ImGuiColorEditFlags_NoAlpha);
-            if (picker_type == 0) picker_flags |= ImGuiColorEditFlags_PickerHueBar;
-            if (picker_type == 1) picker_flags |= ImGuiColorEditFlags_PickerHueWheel;
-            ImVec2 backup_pos = ImGui::GetCursorScreenPos();
-            if (ImGui::Selectable("##selectable", false, 0, picker_size)) // By default, Selectable() is closing popup
-                g.ColorEditOptions = (g.ColorEditOptions & ~ImGuiColorEditFlags__PickerMask) | (picker_flags & ImGuiColorEditFlags__PickerMask);
-            ImGui::SetCursorScreenPos(backup_pos);
-            ImVec4 dummy_ref_col;
-            memcpy(&dummy_ref_col.x, ref_col, sizeof(float) * (picker_flags & ImGuiColorEditFlags_NoAlpha ? 3 : 4));
-            ImGui::ColorPicker4("##dummypicker", &dummy_ref_col.x, picker_flags);
-            ImGui::PopID();
-        }
-        ImGui::PopItemWidth();
-    }
-    if (allow_opt_alpha_bar)
-    {
-        if (allow_opt_picker) ImGui::Separator();
-        ImGui::CheckboxFlags("Alpha Bar", (unsigned int*)&g.ColorEditOptions, ImGuiColorEditFlags_AlphaBar);
-    }
-    ImGui::EndPopup();
-}
-
-// Edit colors components (each component in 0.0f..1.0f range).
-// See enum ImGuiColorEditFlags_ for available options. e.g. Only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-// With typical options: Left-click on colored square to open color picker. Right-click to open option menu. CTRL-Click over input fields to edit them and TAB to go to next item.
-bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float square_sz = GetFrameHeight();
-    const float w_extra = (flags & ImGuiColorEditFlags_NoSmallPreview) ? 0.0f : (square_sz + style.ItemInnerSpacing.x);
-    const float w_items_all = CalcItemWidth() - w_extra;
-    const char* label_display_end = FindRenderedTextEnd(label);
-
-    BeginGroup();
-    PushID(label);
-
-    // If we're not showing any slider there's no point in doing any HSV conversions
-    const ImGuiColorEditFlags flags_untouched = flags;
-    if (flags & ImGuiColorEditFlags_NoInputs)
-        flags = (flags & (~ImGuiColorEditFlags__InputsMask)) | ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_NoOptions;
-
-    // Context menu: display and modify options (before defaults are applied)
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-        ColorEditOptionsPopup(col, flags);
-
-    // Read stored options
-    if (!(flags & ImGuiColorEditFlags__InputsMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__InputsMask);
-    if (!(flags & ImGuiColorEditFlags__DataTypeMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__DataTypeMask);
-    if (!(flags & ImGuiColorEditFlags__PickerMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__PickerMask);
-    flags |= (g.ColorEditOptions & ~(ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask));
-
-    const bool alpha = (flags & ImGuiColorEditFlags_NoAlpha) == 0;
-    const bool hdr = (flags & ImGuiColorEditFlags_HDR) != 0;
-    const int components = alpha ? 4 : 3;
-
-    // Convert to the formats we need
-    float f[4] = { col[0], col[1], col[2], alpha ? col[3] : 1.0f };
-    if (flags & ImGuiColorEditFlags_HSV)
-        ColorConvertRGBtoHSV(f[0], f[1], f[2], f[0], f[1], f[2]);
-    int i[4] = { IM_F32_TO_INT8_UNBOUND(f[0]), IM_F32_TO_INT8_UNBOUND(f[1]), IM_F32_TO_INT8_UNBOUND(f[2]), IM_F32_TO_INT8_UNBOUND(f[3]) };
-
-    bool value_changed = false;
-    bool value_changed_as_float = false;
-
-    if ((flags & (ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_HSV)) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        // RGB/HSV 0..255 Sliders
-        const float w_item_one  = ImMax(1.0f, (float)(int)((w_items_all - (style.ItemInnerSpacing.x) * (components-1)) / (float)components));
-        const float w_item_last = ImMax(1.0f, (float)(int)(w_items_all - (w_item_one + style.ItemInnerSpacing.x) * (components-1)));
-
-        const bool hide_prefix = (w_item_one <= CalcTextSize((flags & ImGuiColorEditFlags_Float) ? "M:0.000" : "M:000").x);
-        const char* ids[4] = { "##X", "##Y", "##Z", "##W" };
-        const char* fmt_table_int[3][4] =
-        {
-            {   "%3d",   "%3d",   "%3d",   "%3d" }, // Short display
-            { "R:%3d", "G:%3d", "B:%3d", "A:%3d" }, // Long display for RGBA
-            { "H:%3d", "S:%3d", "V:%3d", "A:%3d" }  // Long display for HSVA
-        };
-        const char* fmt_table_float[3][4] =
-        {
-            {   "%0.3f",   "%0.3f",   "%0.3f",   "%0.3f" }, // Short display
-            { "R:%0.3f", "G:%0.3f", "B:%0.3f", "A:%0.3f" }, // Long display for RGBA
-            { "H:%0.3f", "S:%0.3f", "V:%0.3f", "A:%0.3f" }  // Long display for HSVA
-        };
-        const int fmt_idx = hide_prefix ? 0 : (flags & ImGuiColorEditFlags_HSV) ? 2 : 1;
-
-        PushItemWidth(w_item_one);
-        for (int n = 0; n < components; n++)
-        {
-            if (n > 0)
-                SameLine(0, style.ItemInnerSpacing.x);
-            if (n + 1 == components)
-                PushItemWidth(w_item_last);
-            if (flags & ImGuiColorEditFlags_Float)
-                value_changed = value_changed_as_float = value_changed | DragFloat(ids[n], &f[n], 1.0f/255.0f, 0.0f, hdr ? 0.0f : 1.0f, fmt_table_float[fmt_idx][n]);
-            else
-                value_changed |= DragInt(ids[n], &i[n], 1.0f, 0, hdr ? 0 : 255, fmt_table_int[fmt_idx][n]);
-            if (!(flags & ImGuiColorEditFlags_NoOptions))
-                OpenPopupOnItemClick("context");
-        }
-        PopItemWidth();
-        PopItemWidth();
-    }
-    else if ((flags & ImGuiColorEditFlags_HEX) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        // RGB Hexadecimal Input
-        char buf[64];
-        if (alpha)
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255), ImClamp(i[3],0,255));
-        else
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255));
-        PushItemWidth(w_items_all);
-        if (InputText("##Text", buf, IM_ARRAYSIZE(buf), ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase))
-        {
-            value_changed = true;
-            char* p = buf;
-            while (*p == '#' || ImCharIsBlankA(*p))
-                p++;
-            i[0] = i[1] = i[2] = i[3] = 0;
-            if (alpha)
-                sscanf(p, "%02X%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2], (unsigned int*)&i[3]); // Treat at unsigned (%X is unsigned)
-            else
-                sscanf(p, "%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2]);
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-        PopItemWidth();
-    }
-
-    ImGuiWindow* picker_active_window = NULL;
-    if (!(flags & ImGuiColorEditFlags_NoSmallPreview))
-    {
-        if (!(flags & ImGuiColorEditFlags_NoInputs))
-            SameLine(0, style.ItemInnerSpacing.x);
-
-        const ImVec4 col_v4(col[0], col[1], col[2], alpha ? col[3] : 1.0f);
-        if (ColorButton("##ColorButton", col_v4, flags))
-        {
-            if (!(flags & ImGuiColorEditFlags_NoPicker))
-            {
-                // Store current color and open a picker
-                g.ColorPickerRef = col_v4;
-                OpenPopup("picker");
-                SetNextWindowPos(window->DC.LastItemRect.GetBL() + ImVec2(-1,style.ItemSpacing.y));
-            }
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-
-        if (BeginPopup("picker"))
-        {
-            picker_active_window = g.CurrentWindow;
-            if (label != label_display_end)
-            {
-                TextUnformatted(label, label_display_end);
-                Separator();
-            }
-            ImGuiColorEditFlags picker_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaBar;
-            ImGuiColorEditFlags picker_flags = (flags_untouched & picker_flags_to_forward) | ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags_NoLabel | ImGuiColorEditFlags_AlphaPreviewHalf;
-            PushItemWidth(square_sz * 12.0f); // Use 256 + bar sizes?
-            value_changed |= ColorPicker4("##picker", col, picker_flags, &g.ColorPickerRef.x);
-            PopItemWidth();
-            EndPopup();
-        }
-    }
-
-    if (label != label_display_end && !(flags & ImGuiColorEditFlags_NoLabel))
-    {
-        SameLine(0, style.ItemInnerSpacing.x);
-        TextUnformatted(label, label_display_end);
-    }
-
-    // Convert back
-    if (picker_active_window == NULL)
-    {
-        if (!value_changed_as_float)
-            for (int n = 0; n < 4; n++)
-                f[n] = i[n] / 255.0f;
-        if (flags & ImGuiColorEditFlags_HSV)
-            ColorConvertHSVtoRGB(f[0], f[1], f[2], f[0], f[1], f[2]);
-        if (value_changed)
-        {
-            col[0] = f[0];
-            col[1] = f[1];
-            col[2] = f[2];
-            if (alpha)
-                col[3] = f[3];
-        }
-    }
-
-    PopID();
-    EndGroup();
-
-    // Drag and Drop Target
-    // NB: The flag test is merely an optional micro-optimization, BeginDragDropTarget() does the same test.
-    if ((window->DC.LastItemStatusFlags & ImGuiItemStatusFlags_HoveredRect) && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropTarget())
-    {
-        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F))
-        {
-            memcpy((float*)col, payload->Data, sizeof(float) * 3);
-            value_changed = true;
-        }
-        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F))
-        {
-            memcpy((float*)col, payload->Data, sizeof(float) * components);
-            value_changed = true;
-        }
-        EndDragDropTarget();
-    }
-
-    // When picker is being actively used, use its active id so IsItemActive() will function on ColorEdit4().
-    if (picker_active_window && g.ActiveId != 0 && g.ActiveIdWindow == picker_active_window)
-        window->DC.LastItemId = g.ActiveId;
-
-    if (value_changed)
-        MarkItemEdited(window->DC.LastItemId);
-
-    return value_changed;
-}
-
-bool ImGui::ColorPicker3(const char* label, float col[3], ImGuiColorEditFlags flags)
-{
-    float col4[4] = { col[0], col[1], col[2], 1.0f };
-    if (!ColorPicker4(label, col4, flags | ImGuiColorEditFlags_NoAlpha))
-        return false;
-    col[0] = col4[0]; col[1] = col4[1]; col[2] = col4[2];
-    return true;
-}
-
-static void RenderArrowsForVerticalBar(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, float bar_w)
-{
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x + 1,         pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Right, IM_COL32_BLACK);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x,             pos.y), half_sz,                              ImGuiDir_Right, IM_COL32_WHITE);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x - 1, pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Left,  IM_COL32_BLACK);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x,     pos.y), half_sz,                              ImGuiDir_Left,  IM_COL32_WHITE);
-}
-
-// ColorPicker
-// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-// FIXME: we adjust the big color square height based on item width, which may cause a flickering feedback loop (if automatic height makes a vertical scrollbar appears, affecting automatic width..)
-bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags flags, const float* ref_col)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    ImDrawList* draw_list = window->DrawList;
-
-    ImGuiStyle& style = g.Style;
-    ImGuiIO& io = g.IO;
-
-    PushID(label);
-    BeginGroup();
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-        flags |= ImGuiColorEditFlags_NoSmallPreview;
-
-    // Context menu: display and store options.
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-
-    // Read stored options
-    if (!(flags & ImGuiColorEditFlags__PickerMask))
-        flags |= ((g.ColorEditOptions & ImGuiColorEditFlags__PickerMask) ? g.ColorEditOptions : ImGuiColorEditFlags__OptionsDefault) & ImGuiColorEditFlags__PickerMask;
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask))); // Check that only 1 is selected
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags_AlphaBar);
-
-    // Setup
-    int components = (flags & ImGuiColorEditFlags_NoAlpha) ? 3 : 4;
-    bool alpha_bar = (flags & ImGuiColorEditFlags_AlphaBar) && !(flags & ImGuiColorEditFlags_NoAlpha);
-    ImVec2 picker_pos = window->DC.CursorPos;
-    float square_sz = GetFrameHeight();
-    float bars_width = square_sz; // Arbitrary smallish width of Hue/Alpha picking bars
-    float sv_picker_size = ImMax(bars_width * 1, CalcItemWidth() - (alpha_bar ? 2 : 1) * (bars_width + style.ItemInnerSpacing.x)); // Saturation/Value picking box
-    float bar0_pos_x = picker_pos.x + sv_picker_size + style.ItemInnerSpacing.x;
-    float bar1_pos_x = bar0_pos_x + bars_width + style.ItemInnerSpacing.x;
-    float bars_triangles_half_sz = (float)(int)(bars_width * 0.20f);
-
-    float backup_initial_col[4];
-    memcpy(backup_initial_col, col, components * sizeof(float));
-
-    float wheel_thickness = sv_picker_size * 0.08f;
-    float wheel_r_outer = sv_picker_size * 0.50f;
-    float wheel_r_inner = wheel_r_outer - wheel_thickness;
-    ImVec2 wheel_center(picker_pos.x + (sv_picker_size + bars_width)*0.5f, picker_pos.y + sv_picker_size*0.5f);
-
-    // Note: the triangle is displayed rotated with triangle_pa pointing to Hue, but most coordinates stays unrotated for logic.
-    float triangle_r = wheel_r_inner - (int)(sv_picker_size * 0.027f);
-    ImVec2 triangle_pa = ImVec2(triangle_r, 0.0f); // Hue point.
-    ImVec2 triangle_pb = ImVec2(triangle_r * -0.5f, triangle_r * -0.866025f); // Black point.
-    ImVec2 triangle_pc = ImVec2(triangle_r * -0.5f, triangle_r * +0.866025f); // White point.
-
-    float H,S,V;
-    ColorConvertRGBtoHSV(col[0], col[1], col[2], H, S, V);
-
-    bool value_changed = false, value_changed_h = false, value_changed_sv = false;
-
-    PushItemFlag(ImGuiItemFlags_NoNav, true);
-    if (flags & ImGuiColorEditFlags_PickerHueWheel)
-    {
-        // Hue wheel + SV triangle logic
-        InvisibleButton("hsv", ImVec2(sv_picker_size + style.ItemInnerSpacing.x + bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            ImVec2 initial_off = g.IO.MouseClickedPos[0] - wheel_center;
-            ImVec2 current_off = g.IO.MousePos - wheel_center;
-            float initial_dist2 = ImLengthSqr(initial_off);
-            if (initial_dist2 >= (wheel_r_inner-1)*(wheel_r_inner-1) && initial_dist2 <= (wheel_r_outer+1)*(wheel_r_outer+1))
-            {
-                // Interactive with Hue wheel
-                H = ImAtan2(current_off.y, current_off.x) / IM_PI*0.5f;
-                if (H < 0.0f)
-                    H += 1.0f;
-                value_changed = value_changed_h = true;
-            }
-            float cos_hue_angle = ImCos(-H * 2.0f * IM_PI);
-            float sin_hue_angle = ImSin(-H * 2.0f * IM_PI);
-            if (ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, ImRotate(initial_off, cos_hue_angle, sin_hue_angle)))
-            {
-                // Interacting with SV triangle
-                ImVec2 current_off_unrotated = ImRotate(current_off, cos_hue_angle, sin_hue_angle);
-                if (!ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated))
-                    current_off_unrotated = ImTriangleClosestPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated);
-                float uu, vv, ww;
-                ImTriangleBarycentricCoords(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated, uu, vv, ww);
-                V = ImClamp(1.0f - vv, 0.0001f, 1.0f);
-                S = ImClamp(uu / V, 0.0001f, 1.0f);
-                value_changed = value_changed_sv = true;
-            }
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-    }
-    else if (flags & ImGuiColorEditFlags_PickerHueBar)
-    {
-        // SV rectangle logic
-        InvisibleButton("sv", ImVec2(sv_picker_size, sv_picker_size));
-        if (IsItemActive())
-        {
-            S = ImSaturate((io.MousePos.x - picker_pos.x) / (sv_picker_size-1));
-            V = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = value_changed_sv = true;
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-
-        // Hue bar logic
-        SetCursorScreenPos(ImVec2(bar0_pos_x, picker_pos.y));
-        InvisibleButton("hue", ImVec2(bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            H = ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = value_changed_h = true;
-        }
-    }
-
-    // Alpha bar logic
-    if (alpha_bar)
-    {
-        SetCursorScreenPos(ImVec2(bar1_pos_x, picker_pos.y));
-        InvisibleButton("alpha", ImVec2(bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            col[3] = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = true;
-        }
-    }
-    PopItemFlag(); // ImGuiItemFlags_NoNav
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-    {
-        SameLine(0, style.ItemInnerSpacing.x);
-        BeginGroup();
-    }
-
-    if (!(flags & ImGuiColorEditFlags_NoLabel))
-    {
-        const char* label_display_end = FindRenderedTextEnd(label);
-        if (label != label_display_end)
-        {
-            if ((flags & ImGuiColorEditFlags_NoSidePreview))
-                SameLine(0, style.ItemInnerSpacing.x);
-            TextUnformatted(label, label_display_end);
-        }
-    }
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-    {
-        PushItemFlag(ImGuiItemFlags_NoNavDefaultFocus, true);
-        ImVec4 col_v4(col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
-        if ((flags & ImGuiColorEditFlags_NoLabel))
-            Text("Current");
-        ColorButton("##current", col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2));
-        if (ref_col != NULL)
-        {
-            Text("Original");
-            ImVec4 ref_col_v4(ref_col[0], ref_col[1], ref_col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : ref_col[3]);
-            if (ColorButton("##original", ref_col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2)))
-            {
-                memcpy(col, ref_col, components * sizeof(float));
-                value_changed = true;
-            }
-        }
-        PopItemFlag();
-        EndGroup();
-    }
-
-    // Convert back color to RGB
-    if (value_changed_h || value_changed_sv)
-        ColorConvertHSVtoRGB(H >= 1.0f ? H - 10 * 1e-6f : H, S > 0.0f ? S : 10*1e-6f, V > 0.0f ? V : 1e-6f, col[0], col[1], col[2]);
-
-    // R,G,B and H,S,V slider color editor
-    bool value_changed_fix_hue_wrap = false;
-    if ((flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        PushItemWidth((alpha_bar ? bar1_pos_x : bar0_pos_x) + bars_width - picker_pos.x);
-        ImGuiColorEditFlags sub_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoOptions | ImGuiColorEditFlags_NoSmallPreview | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf;
-        ImGuiColorEditFlags sub_flags = (flags & sub_flags_to_forward) | ImGuiColorEditFlags_NoPicker;
-        if (flags & ImGuiColorEditFlags_RGB || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            if (ColorEdit4("##rgb", col, sub_flags | ImGuiColorEditFlags_RGB))
-            {
-                // FIXME: Hackily differenciating using the DragInt (ActiveId != 0 && !ActiveIdAllowOverlap) vs. using the InputText or DropTarget.
-                // For the later we don't want to run the hue-wrap canceling code. If you are well versed in HSV picker please provide your input! (See #2050)
-                value_changed_fix_hue_wrap = (g.ActiveId != 0 && !g.ActiveIdAllowOverlap);
-                value_changed = true;
-            }
-        if (flags & ImGuiColorEditFlags_HSV || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            value_changed |= ColorEdit4("##hsv", col, sub_flags | ImGuiColorEditFlags_HSV);
-        if (flags & ImGuiColorEditFlags_HEX || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            value_changed |= ColorEdit4("##hex", col, sub_flags | ImGuiColorEditFlags_HEX);
-        PopItemWidth();
-    }
-
-    // Try to cancel hue wrap (after ColorEdit4 call), if any
-    if (value_changed_fix_hue_wrap)
-    {
-        float new_H, new_S, new_V;
-        ColorConvertRGBtoHSV(col[0], col[1], col[2], new_H, new_S, new_V);
-        if (new_H <= 0 && H > 0)
-        {
-            if (new_V <= 0 && V != new_V)
-                ColorConvertHSVtoRGB(H, S, new_V <= 0 ? V * 0.5f : new_V, col[0], col[1], col[2]);
-            else if (new_S <= 0)
-                ColorConvertHSVtoRGB(H, new_S <= 0 ? S * 0.5f : new_S, new_V, col[0], col[1], col[2]);
-        }
-    }
-
-    ImVec4 hue_color_f(1, 1, 1, 1); ColorConvertHSVtoRGB(H, 1, 1, hue_color_f.x, hue_color_f.y, hue_color_f.z);
-    ImU32 hue_color32 = ColorConvertFloat4ToU32(hue_color_f);
-    ImU32 col32_no_alpha = ColorConvertFloat4ToU32(ImVec4(col[0], col[1], col[2], 1.0f));
-
-    const ImU32 hue_colors[6+1] = { IM_COL32(255,0,0,255), IM_COL32(255,255,0,255), IM_COL32(0,255,0,255), IM_COL32(0,255,255,255), IM_COL32(0,0,255,255), IM_COL32(255,0,255,255), IM_COL32(255,0,0,255) };
-    ImVec2 sv_cursor_pos;
-
-    if (flags & ImGuiColorEditFlags_PickerHueWheel)
-    {
-        // Render Hue Wheel
-        const float aeps = 1.5f / wheel_r_outer; // Half a pixel arc length in radians (2pi cancels out).
-        const int segment_per_arc = ImMax(4, (int)wheel_r_outer / 12);
-        for (int n = 0; n < 6; n++)
-        {
-            const float a0 = (n)     /6.0f * 2.0f * IM_PI - aeps;
-            const float a1 = (n+1.0f)/6.0f * 2.0f * IM_PI + aeps;
-            const int vert_start_idx = draw_list->VtxBuffer.Size;
-            draw_list->PathArcTo(wheel_center, (wheel_r_inner + wheel_r_outer)*0.5f, a0, a1, segment_per_arc);
-            draw_list->PathStroke(IM_COL32_WHITE, false, wheel_thickness);
-            const int vert_end_idx = draw_list->VtxBuffer.Size;
-
-            // Paint colors over existing vertices
-            ImVec2 gradient_p0(wheel_center.x + ImCos(a0) * wheel_r_inner, wheel_center.y + ImSin(a0) * wheel_r_inner);
-            ImVec2 gradient_p1(wheel_center.x + ImCos(a1) * wheel_r_inner, wheel_center.y + ImSin(a1) * wheel_r_inner);
-            ShadeVertsLinearColorGradientKeepAlpha(draw_list, vert_start_idx, vert_end_idx, gradient_p0, gradient_p1, hue_colors[n], hue_colors[n+1]);
-        }
-
-        // Render Cursor + preview on Hue Wheel
-        float cos_hue_angle = ImCos(H * 2.0f * IM_PI);
-        float sin_hue_angle = ImSin(H * 2.0f * IM_PI);
-        ImVec2 hue_cursor_pos(wheel_center.x + cos_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f, wheel_center.y + sin_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f);
-        float hue_cursor_rad = value_changed_h ? wheel_thickness * 0.65f : wheel_thickness * 0.55f;
-        int hue_cursor_segments = ImClamp((int)(hue_cursor_rad / 1.4f), 9, 32);
-        draw_list->AddCircleFilled(hue_cursor_pos, hue_cursor_rad, hue_color32, hue_cursor_segments);
-        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad+1, IM_COL32(128,128,128,255), hue_cursor_segments);
-        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad, IM_COL32_WHITE, hue_cursor_segments);
-
-        // Render SV triangle (rotated according to hue)
-        ImVec2 tra = wheel_center + ImRotate(triangle_pa, cos_hue_angle, sin_hue_angle);
-        ImVec2 trb = wheel_center + ImRotate(triangle_pb, cos_hue_angle, sin_hue_angle);
-        ImVec2 trc = wheel_center + ImRotate(triangle_pc, cos_hue_angle, sin_hue_angle);
-        ImVec2 uv_white = GetFontTexUvWhitePixel();
-        draw_list->PrimReserve(6, 6);
-        draw_list->PrimVtx(tra, uv_white, hue_color32);
-        draw_list->PrimVtx(trb, uv_white, hue_color32);
-        draw_list->PrimVtx(trc, uv_white, IM_COL32_WHITE);
-        draw_list->PrimVtx(tra, uv_white, IM_COL32_BLACK_TRANS);
-        draw_list->PrimVtx(trb, uv_white, IM_COL32_BLACK);
-        draw_list->PrimVtx(trc, uv_white, IM_COL32_BLACK_TRANS);
-        draw_list->AddTriangle(tra, trb, trc, IM_COL32(128,128,128,255), 1.5f);
-        sv_cursor_pos = ImLerp(ImLerp(trc, tra, ImSaturate(S)), trb, ImSaturate(1 - V));
-    }
-    else if (flags & ImGuiColorEditFlags_PickerHueBar)
-    {
-        // Render SV Square
-        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_WHITE, hue_color32, hue_color32, IM_COL32_WHITE);
-        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_BLACK_TRANS, IM_COL32_BLACK_TRANS, IM_COL32_BLACK, IM_COL32_BLACK);
-        RenderFrameBorder(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), 0.0f);
-        sv_cursor_pos.x = ImClamp((float)(int)(picker_pos.x + ImSaturate(S)     * sv_picker_size + 0.5f), picker_pos.x + 2, picker_pos.x + sv_picker_size - 2); // Sneakily prevent the circle to stick out too much
-        sv_cursor_pos.y = ImClamp((float)(int)(picker_pos.y + ImSaturate(1 - V) * sv_picker_size + 0.5f), picker_pos.y + 2, picker_pos.y + sv_picker_size - 2);
-
-        // Render Hue Bar
-        for (int i = 0; i < 6; ++i)
-            draw_list->AddRectFilledMultiColor(ImVec2(bar0_pos_x, picker_pos.y + i * (sv_picker_size / 6)), ImVec2(bar0_pos_x + bars_width, picker_pos.y + (i + 1) * (sv_picker_size / 6)), hue_colors[i], hue_colors[i], hue_colors[i + 1], hue_colors[i + 1]);
-        float bar0_line_y = (float)(int)(picker_pos.y + H * sv_picker_size + 0.5f);
-        RenderFrameBorder(ImVec2(bar0_pos_x, picker_pos.y), ImVec2(bar0_pos_x + bars_width, picker_pos.y + sv_picker_size), 0.0f);
-        RenderArrowsForVerticalBar(draw_list, ImVec2(bar0_pos_x - 1, bar0_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
-    }
-
-    // Render cursor/preview circle (clamp S/V within 0..1 range because floating points colors may lead HSV values to be out of range)
-    float sv_cursor_rad = value_changed_sv ? 10.0f : 6.0f;
-    draw_list->AddCircleFilled(sv_cursor_pos, sv_cursor_rad, col32_no_alpha, 12);
-    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad+1, IM_COL32(128,128,128,255), 12);
-    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad, IM_COL32_WHITE, 12);
-
-    // Render alpha bar
-    if (alpha_bar)
-    {
-        float alpha = ImSaturate(col[3]);
-        ImRect bar1_bb(bar1_pos_x, picker_pos.y, bar1_pos_x + bars_width, picker_pos.y + sv_picker_size);
-        RenderColorRectWithAlphaCheckerboard(bar1_bb.Min, bar1_bb.Max, IM_COL32(0,0,0,0), bar1_bb.GetWidth() / 2.0f, ImVec2(0.0f, 0.0f));
-        draw_list->AddRectFilledMultiColor(bar1_bb.Min, bar1_bb.Max, col32_no_alpha, col32_no_alpha, col32_no_alpha & ~IM_COL32_A_MASK, col32_no_alpha & ~IM_COL32_A_MASK);
-        float bar1_line_y = (float)(int)(picker_pos.y + (1.0f - alpha) * sv_picker_size + 0.5f);
-        RenderFrameBorder(bar1_bb.Min, bar1_bb.Max, 0.0f);
-        RenderArrowsForVerticalBar(draw_list, ImVec2(bar1_pos_x - 1, bar1_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
-    }
-
-    EndGroup();
-
-    if (value_changed && memcmp(backup_initial_col, col, components * sizeof(float)) == 0)
-        value_changed = false;
-    if (value_changed)
-        MarkItemEdited(window->DC.LastItemId);
-
-    PopID();
-
-    return value_changed;
-}
-
 // Horizontal/vertical separating line
 void ImGui::Separator()
 {
@@ -13082,7 +6107,7 @@
     window->DrawList->AddLine(bb.Min, ImVec2(bb.Max.x,bb.Min.y), GetColorU32(ImGuiCol_Separator));
 
     if (g.LogEnabled)
-            LogRenderedText(NULL, IM_NEWLINE "--------------------------------");
+        LogRenderedText(NULL, IM_NEWLINE "--------------------------------");
 
     if (window->DC.ColumnsSet)
     {
@@ -13309,6 +6334,1457 @@
     window->DC.LayoutType = backup_layout_type;
 }
 
+void ImGui::Indent(float indent_w)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    window->DC.Indent.x += (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
+    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
+}
+
+void ImGui::Unindent(float indent_w)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    window->DC.Indent.x -= (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
+    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
+}
+
+//-----------------------------------------------------------------------------
+// TOOLTIPS
+//-----------------------------------------------------------------------------
+
+void ImGui::BeginTooltip()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.DragDropWithinSourceOrTarget)
+    {
+        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
+        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
+        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
+        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
+        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
+        SetNextWindowPos(tooltip_pos);
+        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
+        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
+        BeginTooltipEx(0, true);
+    }
+    else
+    {
+        BeginTooltipEx(0, false);
+    }
+}
+
+// Not exposed publicly as BeginTooltip() because bool parameters are evil. Let's see if other needs arise first.
+void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, bool override_previous_tooltip)
+{
+    ImGuiContext& g = *GImGui;
+    char window_name[16];
+    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
+    if (override_previous_tooltip)
+        if (ImGuiWindow* window = FindWindowByName(window_name))
+            if (window->Active)
+            {
+                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
+                window->Hidden = true;
+                window->HiddenFramesRegular = 1;
+                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
+            }
+    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoInputs|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoNav;
+    Begin(window_name, NULL, flags | extra_flags);
+}
+
+void ImGui::EndTooltip()
+{
+    IM_ASSERT(GetCurrentWindowRead()->Flags & ImGuiWindowFlags_Tooltip);   // Mismatched BeginTooltip()/EndTooltip() calls
+    End();
+}
+
+void ImGui::SetTooltipV(const char* fmt, va_list args)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.DragDropWithinSourceOrTarget)
+        BeginTooltip();
+    else
+        BeginTooltipEx(0, true);
+    TextV(fmt, args);
+    EndTooltip();
+}
+
+void ImGui::SetTooltip(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    SetTooltipV(fmt, args);
+    va_end(args);
+}
+
+//-----------------------------------------------------------------------------
+// POPUPS
+//-----------------------------------------------------------------------------
+
+bool ImGui::IsPopupOpen(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == id;
+}
+
+bool ImGui::IsPopupOpen(const char* str_id)
+{
+    ImGuiContext& g = *GImGui;
+    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == g.CurrentWindow->GetID(str_id);
+}
+
+ImGuiWindow* ImGui::GetFrontMostPopupModal()
+{
+    ImGuiContext& g = *GImGui;
+    for (int n = g.OpenPopupStack.Size-1; n >= 0; n--)
+        if (ImGuiWindow* popup = g.OpenPopupStack.Data[n].Window)
+            if (popup->Flags & ImGuiWindowFlags_Modal)
+                return popup;
+    return NULL;
+}
+
+void ImGui::OpenPopup(const char* str_id)
+{
+    ImGuiContext& g = *GImGui;
+    OpenPopupEx(g.CurrentWindow->GetID(str_id));
+}
+
+// Mark popup as open (toggle toward open state).
+// Popups are closed when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
+// Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
+// One open popup per level of the popup hierarchy (NB: when assigning we reset the Window member of ImGuiPopupRef to NULL)
+void ImGui::OpenPopupEx(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* parent_window = g.CurrentWindow;
+    int current_stack_size = g.CurrentPopupStack.Size;
+    ImGuiPopupRef popup_ref; // Tagged as new ref as Window will be set back to NULL if we write this into OpenPopupStack.
+    popup_ref.PopupId = id;
+    popup_ref.Window = NULL;
+    popup_ref.ParentWindow = parent_window;
+    popup_ref.OpenFrameCount = g.FrameCount;
+    popup_ref.OpenParentId = parent_window->IDStack.back();
+    popup_ref.OpenMousePos = g.IO.MousePos;
+    popup_ref.OpenPopupPos = NavCalcPreferredRefPos();
+
+    //printf("[%05d] OpenPopupEx(0x%08X)\n", g.FrameCount, id);
+    if (g.OpenPopupStack.Size < current_stack_size + 1)
+    {
+        g.OpenPopupStack.push_back(popup_ref);
+    }
+    else
+    {
+        // Gently handle the user mistakenly calling OpenPopup() every frame. It is a programming mistake! However, if we were to run the regular code path, the ui
+        // would become completely unusable because the popup will always be in hidden-while-calculating-size state _while_ claiming focus. Which would be a very confusing
+        // situation for the programmer. Instead, we silently allow the popup to proceed, it will keep reappearing and the programming error will be more obvious to understand.
+        if (g.OpenPopupStack[current_stack_size].PopupId == id && g.OpenPopupStack[current_stack_size].OpenFrameCount == g.FrameCount - 1)
+        {
+            g.OpenPopupStack[current_stack_size].OpenFrameCount = popup_ref.OpenFrameCount;
+        }
+        else
+        {
+            // Close child popups if any, then flag popup for open/reopen
+            g.OpenPopupStack.resize(current_stack_size + 1);
+            g.OpenPopupStack[current_stack_size] = popup_ref;
+        }
+
+        // When reopening a popup we first refocus its parent, otherwise if its parent is itself a popup it would get closed by ClosePopupsOverWindow().
+        // This is equivalent to what ClosePopupToLevel() does.
+        //if (g.OpenPopupStack[current_stack_size].PopupId == id)
+        //    FocusWindow(parent_window);
+    }
+}
+
+bool ImGui::OpenPopupOnItemClick(const char* str_id, int mouse_button)
+{
+    ImGuiWindow* window = GImGui->CurrentWindow;
+    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+    {
+        ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
+        IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
+        OpenPopupEx(id);
+        return true;
+    }
+    return false;
+}
+
+void ImGui::ClosePopupsOverWindow(ImGuiWindow* ref_window)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.OpenPopupStack.empty())
+        return;
+
+    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
+    // Don't close our own child popup windows.
+    int n = 0;
+    if (ref_window)
+    {
+        for (n = 0; n < g.OpenPopupStack.Size; n++)
+        {
+            ImGuiPopupRef& popup = g.OpenPopupStack[n];
+            if (!popup.Window)
+                continue;
+            IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
+            if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
+                continue;
+
+            // Trim the stack if popups are not direct descendant of the reference window (which is often the NavWindow)
+            bool has_focus = false;
+            for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
+                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
+            if (!has_focus)
+                break;
+        }
+    }
+    if (n < g.OpenPopupStack.Size) // This test is not required but it allows to set a convenient breakpoint on the block below
+        ClosePopupToLevel(n);
+}
+
+void ImGui::ClosePopupToLevel(int remaining)
+{
+    IM_ASSERT(remaining >= 0);
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* focus_window = (remaining > 0) ? g.OpenPopupStack[remaining-1].Window : g.OpenPopupStack[0].ParentWindow;
+    if (g.NavLayer == 0)
+        focus_window = NavRestoreLastChildNavWindow(focus_window);
+    FocusWindow(focus_window);
+    focus_window->DC.NavHideHighlightOneFrame = true;
+    g.OpenPopupStack.resize(remaining);
+}
+
+void ImGui::ClosePopup(ImGuiID id)
+{
+    if (!IsPopupOpen(id))
+        return;
+    ImGuiContext& g = *GImGui;
+    ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+}
+
+// Close the popup we have begin-ed into.
+void ImGui::CloseCurrentPopup()
+{
+    ImGuiContext& g = *GImGui;
+    int popup_idx = g.CurrentPopupStack.Size - 1;
+    if (popup_idx < 0 || popup_idx >= g.OpenPopupStack.Size || g.CurrentPopupStack[popup_idx].PopupId != g.OpenPopupStack[popup_idx].PopupId)
+        return;
+    while (popup_idx > 0 && g.OpenPopupStack[popup_idx].Window && (g.OpenPopupStack[popup_idx].Window->Flags & ImGuiWindowFlags_ChildMenu))
+        popup_idx--;
+    ClosePopupToLevel(popup_idx);
+}
+
+bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (!IsPopupOpen(id))
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+
+    char name[20];
+    if (extra_flags & ImGuiWindowFlags_ChildMenu)
+        ImFormatString(name, IM_ARRAYSIZE(name), "##Menu_%02d", g.CurrentPopupStack.Size);    // Recycle windows based on depth
+    else
+        ImFormatString(name, IM_ARRAYSIZE(name), "##Popup_%08x", id); // Not recycling, so we can close/open during the same frame
+
+    bool is_open = Begin(name, NULL, extra_flags | ImGuiWindowFlags_Popup);
+    if (!is_open) // NB: Begin can return false when the popup is completely clipped (e.g. zero size display)
+        EndPopup();
+
+    return is_open;
+}
+
+bool ImGui::BeginPopup(const char* str_id, ImGuiWindowFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.OpenPopupStack.Size <= g.CurrentPopupStack.Size) // Early out for performance
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+    return BeginPopupEx(g.CurrentWindow->GetID(str_id), flags|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    const ImGuiID id = window->GetID(name);
+    if (!IsPopupOpen(id))
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+
+    // Center modal windows by default
+    // FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
+    if (g.NextWindowData.PosCond == 0)
+        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
+
+    bool is_open = Begin(name, p_open, flags | ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
+    if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
+    {
+        EndPopup();
+        if (is_open)
+            ClosePopup(id);
+        return false;
+    }
+    return is_open;
+}
+
+void ImGui::EndPopup()
+{
+    ImGuiContext& g = *GImGui; (void)g;
+    IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup);  // Mismatched BeginPopup()/EndPopup() calls
+    IM_ASSERT(g.CurrentPopupStack.Size > 0);
+
+    // Make all menus and popups wrap around for now, may need to expose that policy.
+    NavMoveRequestTryWrapping(g.CurrentWindow, ImGuiNavMoveFlags_LoopY);
+
+    End();
+}
+
+// This is a helper to handle the simplest case of associating one named popup to one given widget.
+// You may want to handle this on user side if you have specific needs (e.g. tweaking IsItemHovered() parameters).
+// You can pass a NULL str_id to use the identifier of the last item.
+bool ImGui::BeginPopupContextItem(const char* str_id, int mouse_button)
+{
+    ImGuiWindow* window = GImGui->CurrentWindow;
+    ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
+    IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
+    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+        OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupContextWindow(const char* str_id, int mouse_button, bool also_over_items)
+{
+    if (!str_id)
+        str_id = "window_context";
+    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
+    if (IsMouseReleased(mouse_button) && IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+        if (also_over_items || !IsAnyItemHovered())
+            OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupContextVoid(const char* str_id, int mouse_button)
+{
+    if (!str_id)
+        str_id = "void_context";
+    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
+    if (IsMouseReleased(mouse_button) && !IsWindowHovered(ImGuiHoveredFlags_AnyWindow))
+        OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+ImRect ImGui::GetWindowAllowedExtentRect(ImGuiWindow*)
+{
+    ImVec2 padding = GImGui->Style.DisplaySafeAreaPadding;
+    ImRect r_screen = GetViewportRect();
+    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
+    return r_screen;
+}
+
+// r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
+// r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
+ImVec2 ImGui::FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy)
+{
+    ImVec2 base_pos_clamped = ImClamp(ref_pos, r_outer.Min, r_outer.Max - size);
+    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
+    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
+
+    // Combo Box policy (we want a connecting edge)
+    if (policy == ImGuiPopupPositionPolicy_ComboBox)
+    {
+        const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Down, ImGuiDir_Right, ImGuiDir_Left, ImGuiDir_Up };
+        for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
+        {
+            const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+            if (n != -1 && dir == *last_dir) // Already tried this direction?
+                continue;
+            ImVec2 pos;
+            if (dir == ImGuiDir_Down)  pos = ImVec2(r_avoid.Min.x, r_avoid.Max.y);          // Below, Toward Right (default)
+            if (dir == ImGuiDir_Right) pos = ImVec2(r_avoid.Min.x, r_avoid.Min.y - size.y); // Above, Toward Right
+            if (dir == ImGuiDir_Left)  pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Max.y); // Below, Toward Left
+            if (dir == ImGuiDir_Up)    pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Min.y - size.y); // Above, Toward Left
+            if (!r_outer.Contains(ImRect(pos, pos + size)))
+                continue;
+            *last_dir = dir;
+            return pos;
+        }
+    }
+
+    // Default popup policy
+    const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
+    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
+    {
+        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+        if (n != -1 && dir == *last_dir) // Already tried this direction?
+            continue;
+        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
+        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
+        if (avail_w < size.x || avail_h < size.y)
+            continue;
+        ImVec2 pos;
+        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
+        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
+        *last_dir = dir;
+        return pos;
+    }
+
+    // Fallback, try to keep within display
+    *last_dir = ImGuiDir_None;
+    ImVec2 pos = ref_pos;
+    pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
+    pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
+    return pos;
+}
+
+ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+
+    ImRect r_outer = GetWindowAllowedExtentRect(window);
+    if (window->Flags & ImGuiWindowFlags_ChildMenu)
+    {
+        // Child menus typically request _any_ position within the parent menu item, and then our FindBestWindowPosForPopup() function will move the new menu outside the parent bounds.
+        // This is how we end up with child menus appearing (most-commonly) on the right of the parent menu.
+        IM_ASSERT(g.CurrentWindow == window);
+        ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.Size - 2];
+        float horizontal_overlap = g.Style.ItemSpacing.x;       // We want some overlap to convey the relative depth of each menu (currently the amount of overlap is hard-coded to style.ItemSpacing.x).
+        ImRect r_avoid;
+        if (parent_window->DC.MenuBarAppending)
+            r_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
+        else
+            r_avoid = ImRect(parent_window->Pos.x + horizontal_overlap, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - horizontal_overlap - parent_window->ScrollbarSizes.x, FLT_MAX);
+        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+    }
+    if (window->Flags & ImGuiWindowFlags_Popup)
+    {
+        ImRect r_avoid = ImRect(window->Pos.x - 1, window->Pos.y - 1, window->Pos.x + 1, window->Pos.y + 1);
+        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+    }
+    if (window->Flags & ImGuiWindowFlags_Tooltip)
+    {
+        // Position tooltip (always follows mouse)
+        float sc = g.Style.MouseCursorScale;
+        ImVec2 ref_pos = NavCalcPreferredRefPos();
+        ImRect r_avoid;
+        if (!g.NavDisableHighlight && g.NavDisableMouseHover && !(g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos))
+            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 16, ref_pos.y + 8);
+        else
+            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24 * sc, ref_pos.y + 24 * sc); // FIXME: Hard-coded based on mouse cursor shape expectation. Exact dimension not very important.
+        ImVec2 pos = FindBestWindowPosForPopupEx(ref_pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+        if (window->AutoPosLastDirection == ImGuiDir_None)
+            pos = ref_pos + ImVec2(2, 2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
+        return pos;
+    }
+    IM_ASSERT(0);
+    return window->Pos;
+}
+
+//-----------------------------------------------------------------------------
+// NAVIGATION
+//-----------------------------------------------------------------------------
+
+static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
+{
+    if (ImFabs(dx) > ImFabs(dy))
+        return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
+    return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
+}
+
+static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
+{
+    if (a1 < b0)
+        return a1 - b0;
+    if (b1 < a0)
+        return a0 - b1;
+    return 0.0f;
+}
+
+static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
+{
+    if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
+    {
+        r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
+        r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
+    }
+    else
+    {
+        r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
+        r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
+    }
+}
+
+// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
+static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    if (g.NavLayer != window->DC.NavLayerCurrent)
+        return false;
+
+    const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
+    g.NavScoringCount++;
+
+    // When entering through a NavFlattened border, we consider child window items as fully clipped for scoring
+    if (window->ParentWindow == g.NavWindow)
+    {
+        IM_ASSERT((window->Flags | g.NavWindow->Flags) & ImGuiWindowFlags_NavFlattened);
+        if (!window->ClipRect.Contains(cand))
+            return false;
+        cand.ClipWithFull(window->ClipRect); // This allows the scored item to not overlap other candidates in the parent window
+    }
+
+    // We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
+    // For example, this ensure that items in one column are not reached when moving vertically from items in another column.
+    NavClampRectToVisibleAreaForMoveDir(g.NavMoveClipDir, cand, window->ClipRect);
+
+    // Compute distance between boxes
+    // FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
+    float dbx = NavScoreItemDistInterval(cand.Min.x, cand.Max.x, curr.Min.x, curr.Max.x);
+    float dby = NavScoreItemDistInterval(ImLerp(cand.Min.y, cand.Max.y, 0.2f), ImLerp(cand.Min.y, cand.Max.y, 0.8f), ImLerp(curr.Min.y, curr.Max.y, 0.2f), ImLerp(curr.Min.y, curr.Max.y, 0.8f)); // Scale down on Y to keep using box-distance for vertically touching items
+    if (dby != 0.0f && dbx != 0.0f)
+       dbx = (dbx/1000.0f) + ((dbx > 0.0f) ? +1.0f : -1.0f);
+    float dist_box = ImFabs(dbx) + ImFabs(dby);
+
+    // Compute distance between centers (this is off by a factor of 2, but we only compare center distances with each other so it doesn't matter)
+    float dcx = (cand.Min.x + cand.Max.x) - (curr.Min.x + curr.Max.x);
+    float dcy = (cand.Min.y + cand.Max.y) - (curr.Min.y + curr.Max.y);
+    float dist_center = ImFabs(dcx) + ImFabs(dcy); // L1 metric (need this for our connectedness guarantee)
+
+    // Determine which quadrant of 'curr' our candidate item 'cand' lies in based on distance
+    ImGuiDir quadrant;
+    float dax = 0.0f, day = 0.0f, dist_axial = 0.0f;
+    if (dbx != 0.0f || dby != 0.0f)
+    {
+        // For non-overlapping boxes, use distance between boxes
+        dax = dbx;
+        day = dby;
+        dist_axial = dist_box;
+        quadrant = NavScoreItemGetQuadrant(dbx, dby);
+    }
+    else if (dcx != 0.0f || dcy != 0.0f)
+    {
+        // For overlapping boxes with different centers, use distance between centers
+        dax = dcx;
+        day = dcy;
+        dist_axial = dist_center;
+        quadrant = NavScoreItemGetQuadrant(dcx, dcy);
+    }
+    else
+    {
+        // Degenerate case: two overlapping buttons with same center, break ties arbitrarily (note that LastItemId here is really the _previous_ item order, but it doesn't matter)
+        quadrant = (window->DC.LastItemId < g.NavId) ? ImGuiDir_Left : ImGuiDir_Right;
+    }
+
+#if IMGUI_DEBUG_NAV_SCORING
+    char buf[128];
+    if (ImGui::IsMouseHoveringRect(cand.Min, cand.Max))
+    {
+        ImFormatString(buf, IM_ARRAYSIZE(buf), "dbox (%.2f,%.2f->%.4f)\ndcen (%.2f,%.2f->%.4f)\nd (%.2f,%.2f->%.4f)\nnav %c, quadrant %c", dbx, dby, dist_box, dcx, dcy, dist_center, dax, day, dist_axial, "WENS"[g.NavMoveDir], "WENS"[quadrant]);
+        ImDrawList* draw_list = ImGui::GetOverlayDrawList();
+        draw_list->AddRect(curr.Min, curr.Max, IM_COL32(255,200,0,100));
+        draw_list->AddRect(cand.Min, cand.Max, IM_COL32(255,255,0,200));
+        draw_list->AddRectFilled(cand.Max-ImVec2(4,4), cand.Max+ImGui::CalcTextSize(buf)+ImVec2(4,4), IM_COL32(40,0,0,150));
+        draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Max, ~0U, buf);
+    }
+    else if (g.IO.KeyCtrl) // Hold to preview score in matching quadrant. Press C to rotate.
+    {
+        if (IsKeyPressedMap(ImGuiKey_C)) { g.NavMoveDirLast = (ImGuiDir)((g.NavMoveDirLast + 1) & 3); g.IO.KeysDownDuration[g.IO.KeyMap[ImGuiKey_C]] = 0.01f; }
+        if (quadrant == g.NavMoveDir)
+        {
+            ImFormatString(buf, IM_ARRAYSIZE(buf), "%.0f/%.0f", dist_box, dist_center);
+            ImDrawList* draw_list = ImGui::GetOverlayDrawList();
+            draw_list->AddRectFilled(cand.Min, cand.Max, IM_COL32(255, 0, 0, 200));
+            draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Min, IM_COL32(255, 255, 255, 255), buf);
+        }
+    }
+ #endif
+
+    // Is it in the quadrant we're interesting in moving to?
+    bool new_best = false;
+    if (quadrant == g.NavMoveDir)
+    {
+        // Does it beat the current best candidate?
+        if (dist_box < result->DistBox)
+        {
+            result->DistBox = dist_box;
+            result->DistCenter = dist_center;
+            return true;
+        }
+        if (dist_box == result->DistBox)
+        {
+            // Try using distance between center points to break ties
+            if (dist_center < result->DistCenter)
+            {
+                result->DistCenter = dist_center;
+                new_best = true;
+            }
+            else if (dist_center == result->DistCenter)
+            {
+                // Still tied! we need to be extra-careful to make sure everything gets linked properly. We consistently break ties by symbolically moving "later" items
+                // (with higher index) to the right/downwards by an infinitesimal amount since we the current "best" button already (so it must have a lower index),
+                // this is fairly easy. This rule ensures that all buttons with dx==dy==0 will end up being linked in order of appearance along the x axis.
+                if (((g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down) ? dby : dbx) < 0.0f) // moving bj to the right/down decreases distance
+                    new_best = true;
+            }
+        }
+    }
+
+    // Axial check: if 'curr' has no link at all in some direction and 'cand' lies roughly in that direction, add a tentative link. This will only be kept if no "real" matches
+    // are found, so it only augments the graph produced by the above method using extra links. (important, since it doesn't guarantee strong connectedness)
+    // This is just to avoid buttons having no links in a particular direction when there's a suitable neighbor. you get good graphs without this too.
+    // 2017/09/29: FIXME: This now currently only enabled inside menu bars, ideally we'd disable it everywhere. Menus in particular need to catch failure. For general navigation it feels awkward.
+    // Disabling it may lead to disconnected graphs when nodes are very spaced out on different axis. Perhaps consider offering this as an option?
+    if (result->DistBox == FLT_MAX && dist_axial < result->DistAxial)  // Check axial match
+        if (g.NavLayer == 1 && !(g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
+            if ((g.NavMoveDir == ImGuiDir_Left && dax < 0.0f) || (g.NavMoveDir == ImGuiDir_Right && dax > 0.0f) || (g.NavMoveDir == ImGuiDir_Up && day < 0.0f) || (g.NavMoveDir == ImGuiDir_Down && day > 0.0f))
+            {
+                result->DistAxial = dist_axial;
+                new_best = true;
+            }
+
+    return new_best;
+}
+
+// We get there when either NavId == id, or when g.NavAnyRequest is set (which is updated by NavUpdateAnyRequestFlag above)
+static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    //if (!g.IO.NavActive)  // [2017/10/06] Removed this possibly redundant test but I am not sure of all the side-effects yet. Some of the feature here will need to work regardless of using a _NoNavInputs flag.
+    //    return;
+
+    const ImGuiItemFlags item_flags = window->DC.ItemFlags;
+    const ImRect nav_bb_rel(nav_bb.Min - window->Pos, nav_bb.Max - window->Pos);
+
+    // Process Init Request
+    if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
+    {
+        // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
+        {
+            g.NavInitResultId = id;
+            g.NavInitResultRectRel = nav_bb_rel;
+        }
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
+        {
+            g.NavInitRequest = false; // Found a match, clear request
+            NavUpdateAnyRequestFlag();
+        }
+    }
+
+    // Process Move Request (scoring for navigation)
+    // FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
+    if ((g.NavId != id || (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AllowCurrentNavId)) && !(item_flags & ImGuiItemFlags_NoNav))
+    {
+        ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
+#if IMGUI_DEBUG_NAV_SCORING
+        // [DEBUG] Score all items in NavWindow at all times
+        if (!g.NavMoveRequest)
+            g.NavMoveDir = g.NavMoveDirLast;
+        bool new_best = NavScoreItem(result, nav_bb) && g.NavMoveRequest;
+#else
+        bool new_best = g.NavMoveRequest && NavScoreItem(result, nav_bb);
+#endif
+        if (new_best)
+        {
+            result->ID = id;
+            result->Window = window;
+            result->RectRel = nav_bb_rel;
+        }
+
+        const float VISIBLE_RATIO = 0.70f;
+        if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
+            if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
+                if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
+                {
+                    result = &g.NavMoveResultLocalVisibleSet;
+                    result->ID = id;
+                    result->Window = window;
+                    result->RectRel = nav_bb_rel;
+                }
+    }
+
+    // Update window-relative bounding box of navigated item
+    if (g.NavId == id)
+    {
+        g.NavWindow = window;                                           // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
+        g.NavLayer = window->DC.NavLayerCurrent;
+        g.NavIdIsAlive = true;
+        g.NavIdTabCounter = window->FocusIdxTabCounter;
+        window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel;    // Store item bounding box (relative to window position)
+    }
+}
+
+bool ImGui::NavMoveRequestButNoResultYet()
+{
+    ImGuiContext& g = *GImGui;
+    return g.NavMoveRequest && g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0;
+}
+
+void ImGui::NavMoveRequestCancel()
+{
+    ImGuiContext& g = *GImGui;
+    g.NavMoveRequest = false;
+    NavUpdateAnyRequestFlag();
+}
+
+void ImGui::NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, const ImRect& bb_rel, ImGuiNavMoveFlags move_flags)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_None);
+    ImGui::NavMoveRequestCancel();
+    g.NavMoveDir = move_dir;
+    g.NavMoveClipDir = clip_dir;
+    g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
+    g.NavMoveRequestFlags = move_flags;
+    g.NavWindow->NavRectRel[g.NavLayer] = bb_rel;
+}
+
+void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavWindow != window || !NavMoveRequestButNoResultYet() || g.NavMoveRequestForward != ImGuiNavForward_None || g.NavLayer != 0)
+        return;
+    IM_ASSERT(move_flags != 0); // No points calling this with no wrapping
+    ImRect bb_rel = window->NavRectRel[0];
+
+    ImGuiDir clip_dir = g.NavMoveDir;
+    if (g.NavMoveDir == ImGuiDir_Left && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
+    {
+        bb_rel.Min.x = bb_rel.Max.x = ImMax(window->SizeFull.x, window->SizeContents.x) - window->Scroll.x;
+        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(-bb_rel.GetHeight()); clip_dir = ImGuiDir_Up; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Right && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
+    {
+        bb_rel.Min.x = bb_rel.Max.x = -window->Scroll.x;
+        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(+bb_rel.GetHeight()); clip_dir = ImGuiDir_Down; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Up && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
+    {
+        bb_rel.Min.y = bb_rel.Max.y = ImMax(window->SizeFull.y, window->SizeContents.y) - window->Scroll.y;
+        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(-bb_rel.GetWidth()); clip_dir = ImGuiDir_Left; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Down && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
+    {
+        bb_rel.Min.y = bb_rel.Max.y = -window->Scroll.y;
+        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(+bb_rel.GetWidth()); clip_dir = ImGuiDir_Right; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+}
+
+static void ImGui::NavSaveLastChildNavWindow(ImGuiWindow* nav_window)
+{
+    ImGuiWindow* parent_window = nav_window;
+    while (parent_window && (parent_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (parent_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
+        parent_window = parent_window->ParentWindow;
+    if (parent_window && parent_window != nav_window)
+        parent_window->NavLastChildNavWindow = nav_window;
+}
+
+// Call when we are expected to land on Layer 0 after FocusWindow()
+static ImGuiWindow* ImGui::NavRestoreLastChildNavWindow(ImGuiWindow* window)
+{
+    return window->NavLastChildNavWindow ? window->NavLastChildNavWindow : window;
+}
+
+static void NavRestoreLayer(int layer)
+{
+    ImGuiContext& g = *GImGui;
+    g.NavLayer = layer;
+    if (layer == 0)
+        g.NavWindow = ImGui::NavRestoreLastChildNavWindow(g.NavWindow);
+    if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
+        ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
+    else
+        ImGui::NavInitWindow(g.NavWindow, true);
+}
+
+static inline void ImGui::NavUpdateAnyRequestFlag()
+{
+    ImGuiContext& g = *GImGui;
+    g.NavAnyRequest = g.NavMoveRequest || g.NavInitRequest || (IMGUI_DEBUG_NAV_SCORING && g.NavWindow != NULL);
+    if (g.NavAnyRequest)
+        IM_ASSERT(g.NavWindow != NULL);
+}
+
+// This needs to be called before we submit any widget (aka in or before Begin)
+void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(window == g.NavWindow);
+    bool init_for_nav = false;
+    if (!(window->Flags & ImGuiWindowFlags_NoNavInputs))
+        if (!(window->Flags & ImGuiWindowFlags_ChildWindow) || (window->Flags & ImGuiWindowFlags_Popup) || (window->NavLastIds[0] == 0) || force_reinit)
+            init_for_nav = true;
+    if (init_for_nav)
+    {
+        SetNavID(0, g.NavLayer);
+        g.NavInitRequest = true;
+        g.NavInitRequestFromMove = false;
+        g.NavInitResultId = 0;
+        g.NavInitResultRectRel = ImRect();
+        NavUpdateAnyRequestFlag();
+    }
+    else
+    {
+        g.NavId = window->NavLastIds[0];
+    }
+}
+
+static ImVec2 ImGui::NavCalcPreferredRefPos()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow)
+        return ImFloor(g.IO.MousePos);
+
+    // When navigation is active and mouse is disabled, decide on an arbitrary position around the bottom left of the currently navigated item
+    const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
+    ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x*4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
+    ImRect visible_rect = GetViewportRect();
+    return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
+}
+
+float ImGui::GetNavInputAmount(ImGuiNavInput n, ImGuiInputReadMode mode)
+{
+    ImGuiContext& g = *GImGui;
+    if (mode == ImGuiInputReadMode_Down)
+        return g.IO.NavInputs[n];                         // Instant, read analog input (0.0f..1.0f, as provided by user)
+
+    const float t = g.IO.NavInputsDownDuration[n];
+    if (t < 0.0f && mode == ImGuiInputReadMode_Released)  // Return 1.0f when just released, no repeat, ignore analog input.
+        return (g.IO.NavInputsDownDurationPrev[n] >= 0.0f ? 1.0f : 0.0f);
+    if (t < 0.0f)
+        return 0.0f;
+    if (mode == ImGuiInputReadMode_Pressed)               // Return 1.0f when just pressed, no repeat, ignore analog input.
+        return (t == 0.0f) ? 1.0f : 0.0f;
+    if (mode == ImGuiInputReadMode_Repeat)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
+    if (mode == ImGuiInputReadMode_RepeatSlow)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 1.00f, g.IO.KeyRepeatRate * 2.00f);
+    if (mode == ImGuiInputReadMode_RepeatFast)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.30f);
+    return 0.0f;
+}
+
+ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor, float fast_factor)
+{
+    ImVec2 delta(0.0f, 0.0f);
+    if (dir_sources & ImGuiNavDirSourceFlags_Keyboard)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_KeyRight_, mode)   - GetNavInputAmount(ImGuiNavInput_KeyLeft_,   mode), GetNavInputAmount(ImGuiNavInput_KeyDown_,   mode) - GetNavInputAmount(ImGuiNavInput_KeyUp_,   mode));
+    if (dir_sources & ImGuiNavDirSourceFlags_PadDPad)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_DpadRight, mode)   - GetNavInputAmount(ImGuiNavInput_DpadLeft,   mode), GetNavInputAmount(ImGuiNavInput_DpadDown,   mode) - GetNavInputAmount(ImGuiNavInput_DpadUp,   mode));
+    if (dir_sources & ImGuiNavDirSourceFlags_PadLStick)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_LStickRight, mode) - GetNavInputAmount(ImGuiNavInput_LStickLeft, mode), GetNavInputAmount(ImGuiNavInput_LStickDown, mode) - GetNavInputAmount(ImGuiNavInput_LStickUp, mode));
+    if (slow_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakSlow))
+        delta *= slow_factor;
+    if (fast_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakFast))
+        delta *= fast_factor;
+    return delta;
+}
+
+// Scroll to keep newly navigated item fully into view
+// NB: We modify rect_rel by the amount we scrolled for, so it is immediately updated.
+static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item_rect)
+{
+    ImRect window_rect(window->InnerMainRect.Min - ImVec2(1, 1), window->InnerMainRect.Max + ImVec2(1, 1));
+    //g.OverlayDrawList.AddRect(window_rect.Min, window_rect.Max, IM_COL32_WHITE); // [DEBUG]
+    if (window_rect.Contains(item_rect))
+        return;
+
+    ImGuiContext& g = *GImGui;
+    if (window->ScrollbarX && item_rect.Min.x < window_rect.Min.x)
+    {
+        window->ScrollTarget.x = item_rect.Min.x - window->Pos.x + window->Scroll.x - g.Style.ItemSpacing.x;
+        window->ScrollTargetCenterRatio.x = 0.0f;
+    }
+    else if (window->ScrollbarX && item_rect.Max.x >= window_rect.Max.x)
+    {
+        window->ScrollTarget.x = item_rect.Max.x - window->Pos.x + window->Scroll.x + g.Style.ItemSpacing.x;
+        window->ScrollTargetCenterRatio.x = 1.0f;
+    }
+    if (item_rect.Min.y < window_rect.Min.y)
+    {
+        window->ScrollTarget.y = item_rect.Min.y - window->Pos.y + window->Scroll.y - g.Style.ItemSpacing.y;
+        window->ScrollTargetCenterRatio.y = 0.0f;
+    }
+    else if (item_rect.Max.y >= window_rect.Max.y)
+    {
+        window->ScrollTarget.y = item_rect.Max.y - window->Pos.y + window->Scroll.y + g.Style.ItemSpacing.y;
+        window->ScrollTargetCenterRatio.y = 1.0f;
+    }
+}
+
+static void ImGui::NavUpdate()
+{
+    ImGuiContext& g = *GImGui;
+    g.IO.WantSetMousePos = false;
+#if 0
+    if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
+#endif
+
+    // Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
+    bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
+    bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
+    if (nav_gamepad_active)
+        if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
+            g.NavInputSource = ImGuiInputSource_NavGamepad;
+
+    // Update Keyboard->Nav inputs mapping
+    if (nav_keyboard_active)
+    {
+        #define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
+        NAV_MAP_KEY(ImGuiKey_Space,     ImGuiNavInput_Activate );
+        NAV_MAP_KEY(ImGuiKey_Enter,     ImGuiNavInput_Input    );
+        NAV_MAP_KEY(ImGuiKey_Escape,    ImGuiNavInput_Cancel   );
+        NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
+        NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
+        NAV_MAP_KEY(ImGuiKey_UpArrow,   ImGuiNavInput_KeyUp_   );
+        NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
+        if (g.IO.KeyCtrl)   g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
+        if (g.IO.KeyShift)  g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
+        if (g.IO.KeyAlt)    g.IO.NavInputs[ImGuiNavInput_KeyMenu_]  = 1.0f;
+        #undef NAV_MAP_KEY
+    }
+    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
+    for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
+        g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
+
+    // Process navigation init request (select first/default focus)
+    if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
+    {
+        // Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
+        IM_ASSERT(g.NavWindow);
+        if (g.NavInitRequestFromMove)
+            SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
+        else
+            SetNavID(g.NavInitResultId, g.NavLayer);
+        g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
+    }
+    g.NavInitRequest = false;
+    g.NavInitRequestFromMove = false;
+    g.NavInitResultId = 0;
+    g.NavJustMovedToId = 0;
+
+    // Process navigation move request
+    if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
+        NavUpdateMoveResult();
+
+    // When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
+    if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
+    {
+        IM_ASSERT(g.NavMoveRequest);
+        if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
+            g.NavDisableHighlight = false;
+        g.NavMoveRequestForward = ImGuiNavForward_None;
+    }
+
+    // Apply application mouse position movement, after we had a chance to process move request result.
+    if (g.NavMousePosDirty && g.NavIdIsAlive)
+    {
+        // Set mouse position given our knowledge of the navigated item position from last frame
+        if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
+        {
+            if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
+            {
+                g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
+                g.IO.WantSetMousePos = true;
+            }
+        }
+        g.NavMousePosDirty = false;
+    }
+    g.NavIdIsAlive = false;
+    g.NavJustTabbedId = 0;
+    IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
+
+    // Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
+    if (g.NavWindow)
+        NavSaveLastChildNavWindow(g.NavWindow);
+    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
+        g.NavWindow->NavLastChildNavWindow = NULL;
+
+    // Update CTRL+TAB and Windowing features (hold Square to move/resize/etc.)
+    NavUpdateWindowing();
+
+    // Set output flags for user application
+    g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
+    g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
+
+    // Process NavCancel input (to close a popup, get back to parent, clear focus)
+    if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
+    {
+        if (g.ActiveId != 0)
+        {
+            ClearActiveID();
+        }
+        else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
+        {
+            // Exit child window
+            ImGuiWindow* child_window = g.NavWindow;
+            ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
+            IM_ASSERT(child_window->ChildId != 0);
+            FocusWindow(parent_window);
+            SetNavID(child_window->ChildId, 0);
+            g.NavIdIsAlive = false;
+            if (g.NavDisableMouseHover)
+                g.NavMousePosDirty = true;
+        }
+        else if (g.OpenPopupStack.Size > 0)
+        {
+            // Close open popup/menu
+            if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
+                ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+        }
+        else if (g.NavLayer != 0)
+        {
+            // Leave the "menu" layer
+            NavRestoreLayer(0);
+        }
+        else
+        {
+            // Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
+            if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
+                g.NavWindow->NavLastIds[0] = 0;
+            g.NavId = 0;
+        }
+    }
+
+    // Process manual activation request
+    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
+    if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+    {
+        bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
+        bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
+        if (g.ActiveId == 0 && activate_pressed)
+            g.NavActivateId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
+            g.NavActivateDownId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
+            g.NavActivatePressedId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
+            g.NavInputId = g.NavId;
+    }
+    if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+        g.NavDisableHighlight = true;
+    if (g.NavActivateId != 0)
+        IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
+    g.NavMoveRequest = false;
+
+    // Process programmatic activation request
+    if (g.NavNextActivateId != 0)
+        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
+    g.NavNextActivateId = 0;
+
+    // Initiate directional inputs request
+    const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
+    if (g.NavMoveRequestForward == ImGuiNavForward_None)
+    {
+        g.NavMoveDir = ImGuiDir_None;
+        g.NavMoveRequestFlags = 0;
+        if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+        {
+            if ((allowed_dir_flags & (1<<ImGuiDir_Left))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Up))    && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp,   ImGuiNavInput_KeyUp_,   ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Down))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
+        }
+        g.NavMoveClipDir = g.NavMoveDir;
+    }
+    else
+    {
+        // Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
+        // (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
+        IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
+        IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
+        g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
+    }
+
+    // Update PageUp/PageDown scroll
+    float nav_scoring_rect_offset_y = 0.0f;
+    if (nav_keyboard_active)
+        nav_scoring_rect_offset_y = NavUpdatePageUpPageDown(allowed_dir_flags);
+
+    // If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
+    if (g.NavMoveDir != ImGuiDir_None)
+    {
+        g.NavMoveRequest = true;
+        g.NavMoveDirLast = g.NavMoveDir;
+    }
+    if (g.NavMoveRequest && g.NavId == 0)
+    {
+        g.NavInitRequest = g.NavInitRequestFromMove = true;
+        g.NavInitResultId = 0;
+        g.NavDisableHighlight = false;
+    }
+    NavUpdateAnyRequestFlag();
+
+    // Scrolling
+    if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
+    {
+        // *Fallback* manual-scroll with Nav directional keys when window has no navigable item
+        ImGuiWindow* window = g.NavWindow;
+        const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
+        if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
+        {
+            if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
+                SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
+            if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
+                SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
+        }
+
+        // *Normal* Manual scroll with NavScrollXXX keys
+        // Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
+        ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
+        if (scroll_dir.x != 0.0f && window->ScrollbarX)
+        {
+            SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
+            g.NavMoveFromClampedRefRect = true;
+        }
+        if (scroll_dir.y != 0.0f)
+        {
+            SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
+            g.NavMoveFromClampedRefRect = true;
+        }
+    }
+
+    // Reset search results
+    g.NavMoveResultLocal.Clear();
+    g.NavMoveResultLocalVisibleSet.Clear();
+    g.NavMoveResultOther.Clear();
+
+    // When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
+    if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
+    {
+        ImGuiWindow* window = g.NavWindow;
+        ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
+        if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
+        {
+            float pad = window->CalcFontSize() * 0.5f;
+            window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
+            window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
+            g.NavId = 0;
+        }
+        g.NavMoveFromClampedRefRect = false;
+    }
+
+    // For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
+    ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
+    g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
+    g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
+    g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
+    g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
+    IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
+    //g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
+    g.NavScoringCount = 0;
+#if IMGUI_DEBUG_NAV_RECTS
+    if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
+    if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
+#endif
+}
+
+static void ImGui::NavUpdateMoveResult()
+{
+    // Select which result to use
+    ImGuiContext& g = *GImGui;
+    ImGuiNavMoveResult* result = (g.NavMoveResultLocal.ID != 0) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
+
+    // PageUp/PageDown behavior first jumps to the bottom/top mostly visible item, _otherwise_ use the result from the previous/next page.
+    if (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet)
+        if (g.NavMoveResultLocalVisibleSet.ID != 0 && g.NavMoveResultLocalVisibleSet.ID != g.NavId)
+            result = &g.NavMoveResultLocalVisibleSet;
+
+    // Maybe entering a flattened child from the outside? In this case solve the tie using the regular scoring rules.
+    if (result != &g.NavMoveResultOther && g.NavMoveResultOther.ID != 0 && g.NavMoveResultOther.Window->ParentWindow == g.NavWindow)
+        if ((g.NavMoveResultOther.DistBox < result->DistBox) || (g.NavMoveResultOther.DistBox == result->DistBox && g.NavMoveResultOther.DistCenter < result->DistCenter))
+            result = &g.NavMoveResultOther;
+    IM_ASSERT(g.NavWindow && result->Window);
+
+    // Scroll to keep newly navigated item fully into view.
+    if (g.NavLayer == 0)
+    {
+        ImRect rect_abs = ImRect(result->RectRel.Min + result->Window->Pos, result->RectRel.Max + result->Window->Pos);
+        NavScrollToBringItemIntoView(result->Window, rect_abs);
+
+        // Estimate upcoming scroll so we can offset our result position so mouse position can be applied immediately after in NavUpdate()
+        ImVec2 next_scroll = CalcNextScrollFromScrollTargetAndClamp(result->Window, false);
+        ImVec2 delta_scroll = result->Window->Scroll - next_scroll;
+        result->RectRel.Translate(delta_scroll);
+
+        // Also scroll parent window to keep us into view if necessary (we could/should technically recurse back the whole the parent hierarchy).
+        if (result->Window->Flags & ImGuiWindowFlags_ChildWindow)
+            NavScrollToBringItemIntoView(result->Window->ParentWindow, ImRect(rect_abs.Min + delta_scroll, rect_abs.Max + delta_scroll));
+    }
+
+    // Apply result from previous frame navigation directional move request
+    ClearActiveID();
+    g.NavWindow = result->Window;
+    SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
+    g.NavJustMovedToId = result->ID;
+    g.NavMoveFromClampedRefRect = false;
+}
+
+static float ImGui::NavUpdatePageUpPageDown(int allowed_dir_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavMoveDir == ImGuiDir_None && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget && g.NavLayer == 0)
+    {
+        ImGuiWindow* window = g.NavWindow;
+        bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && (allowed_dir_flags & (1 << ImGuiDir_Up));
+        bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && (allowed_dir_flags & (1 << ImGuiDir_Down));
+        if ((page_up_held && !page_down_held) || (page_down_held && !page_up_held))
+        {
+            if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
+            {
+                // Fallback manual-scroll when window has no navigable item
+                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
+                    SetWindowScrollY(window, window->Scroll.y - window->InnerClipRect.GetHeight());
+                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
+                    SetWindowScrollY(window, window->Scroll.y + window->InnerClipRect.GetHeight());
+            }
+            else
+            {
+                const ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
+                const float page_offset_y = ImMax(0.0f, window->InnerClipRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
+                float nav_scoring_rect_offset_y = 0.0f;
+                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
+                {
+                    nav_scoring_rect_offset_y = -page_offset_y;
+                    g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
+                    g.NavMoveClipDir = ImGuiDir_Up;
+                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
+                }
+                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
+                {
+                    nav_scoring_rect_offset_y = +page_offset_y;
+                    g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
+                    g.NavMoveClipDir = ImGuiDir_Down;
+                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
+                }
+                return nav_scoring_rect_offset_y;
+            }
+        }
+    }
+    return 0.0f;
+}
+
+static int FindWindowIndex(ImGuiWindow* window) // FIXME-OPT O(N)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = g.Windows.Size-1; i >= 0; i--)
+        if (g.Windows[i] == window)
+            return i;
+    return -1;
+}
+
+static ImGuiWindow* FindWindowNavFocusable(int i_start, int i_stop, int dir) // FIXME-OPT O(N)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = i_start; i >= 0 && i < g.Windows.Size && i != i_stop; i += dir)
+        if (ImGui::IsWindowNavFocusable(g.Windows[i]))
+            return g.Windows[i];
+    return NULL;
+}
+
+static void NavUpdateWindowingHighlightWindow(int focus_change_dir)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavWindowingTarget);
+    if (g.NavWindowingTarget->Flags & ImGuiWindowFlags_Modal)
+        return;
+
+    const int i_current = FindWindowIndex(g.NavWindowingTarget);
+    ImGuiWindow* window_target = FindWindowNavFocusable(i_current + focus_change_dir, -INT_MAX, focus_change_dir);
+    if (!window_target)
+        window_target = FindWindowNavFocusable((focus_change_dir < 0) ? (g.Windows.Size - 1) : 0, i_current, focus_change_dir);
+    if (window_target) // Don't reset windowing target if there's a single window in the list
+        g.NavWindowingTarget = g.NavWindowingTargetAnim = window_target;
+    g.NavWindowingToggleLayer = false;
+}
+
+// Window management mode (hold to: change focus/move/resize, tap to: toggle menu layer)
+static void ImGui::NavUpdateWindowing()
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* apply_focus_window = NULL;
+    bool apply_toggle_layer = false;
+
+    ImGuiWindow* modal_window = GetFrontMostPopupModal();
+    if (modal_window != NULL)
+    {
+        g.NavWindowingTarget = NULL;
+        return;
+    }
+
+    // Fade out
+    if (g.NavWindowingTargetAnim && g.NavWindowingTarget == NULL)
+    {
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha - g.IO.DeltaTime * 10.0f, 0.0f);
+        if (g.DimBgRatio <= 0.0f && g.NavWindowingHighlightAlpha <= 0.0f)
+            g.NavWindowingTargetAnim = NULL;
+    }
+
+    // Start CTRL-TAB or Square+L/R window selection
+    bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
+    bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
+    if (start_windowing_with_gamepad || start_windowing_with_keyboard)
+        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.Windows.Size - 1, -INT_MAX, -1))
+        {
+            g.NavWindowingTarget = g.NavWindowingTargetAnim = window;
+            g.NavWindowingTimer = g.NavWindowingHighlightAlpha = 0.0f;
+            g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
+            g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
+        }
+
+    // Gamepad update
+    g.NavWindowingTimer += g.IO.DeltaTime;
+    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavGamepad)
+    {
+        // Highlight only appears after a brief time holding the button, so that a fast tap on PadMenu (to toggle NavLayer) doesn't add visual noise
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f));
+
+        // Select window to focus
+        const int focus_change_dir = (int)IsNavInputPressed(ImGuiNavInput_FocusPrev, ImGuiInputReadMode_RepeatSlow) - (int)IsNavInputPressed(ImGuiNavInput_FocusNext, ImGuiInputReadMode_RepeatSlow);
+        if (focus_change_dir != 0)
+        {
+            NavUpdateWindowingHighlightWindow(focus_change_dir);
+            g.NavWindowingHighlightAlpha = 1.0f;
+        }
+
+        // Single press toggles NavLayer, long press with L/R apply actual focus on release (until then the window was merely rendered front-most)
+        if (!IsNavInputDown(ImGuiNavInput_Menu))
+        {
+            g.NavWindowingToggleLayer &= (g.NavWindowingHighlightAlpha < 1.0f); // Once button was held long enough we don't consider it a tap-to-toggle-layer press anymore.
+            if (g.NavWindowingToggleLayer && g.NavWindow)
+                apply_toggle_layer = true;
+            else if (!g.NavWindowingToggleLayer)
+                apply_focus_window = g.NavWindowingTarget;
+            g.NavWindowingTarget = NULL;
+        }
+    }
+
+    // Keyboard: Focus
+    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavKeyboard)
+    {
+        // Visuals only appears after a brief time after pressing TAB the first time, so that a fast CTRL+TAB doesn't add visual noise
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f)); // 1.0f
+        if (IsKeyPressedMap(ImGuiKey_Tab, true))
+            NavUpdateWindowingHighlightWindow(g.IO.KeyShift ? +1 : -1);
+        if (!g.IO.KeyCtrl)
+            apply_focus_window = g.NavWindowingTarget;
+    }
+
+    // Keyboard: Press and Release ALT to toggle menu layer
+    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
+    if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && IsNavInputPressed(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))
+        if (IsMousePosValid(&g.IO.MousePos) == IsMousePosValid(&g.IO.MousePosPrev))
+            apply_toggle_layer = true;
+
+    // Move window
+    if (g.NavWindowingTarget && !(g.NavWindowingTarget->Flags & ImGuiWindowFlags_NoMove))
+    {
+        ImVec2 move_delta;
+        if (g.NavInputSource == ImGuiInputSource_NavKeyboard && !g.IO.KeyShift)
+            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard, ImGuiInputReadMode_Down);
+        if (g.NavInputSource == ImGuiInputSource_NavGamepad)
+            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down);
+        if (move_delta.x != 0.0f || move_delta.y != 0.0f)
+        {
+            const float NAV_MOVE_SPEED = 800.0f;
+            const float move_speed = ImFloor(NAV_MOVE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); // FIXME: Doesn't code variable framerate very well
+            g.NavWindowingTarget->RootWindow->Pos += move_delta * move_speed;
+            g.NavDisableMouseHover = true;
+            MarkIniSettingsDirty(g.NavWindowingTarget);
+        }
+    }
+
+    // Apply final focus
+    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
+    {
+        g.NavDisableHighlight = false;
+        g.NavDisableMouseHover = true;
+        apply_focus_window = NavRestoreLastChildNavWindow(apply_focus_window);
+        ClosePopupsOverWindow(apply_focus_window);
+        FocusWindow(apply_focus_window);
+        if (apply_focus_window->NavLastIds[0] == 0)
+            NavInitWindow(apply_focus_window, false);
+
+        // If the window only has a menu layer, select it directly
+        if (apply_focus_window->DC.NavLayerActiveMask == (1 << 1))
+            g.NavLayer = 1;
+    }
+    if (apply_focus_window)
+        g.NavWindowingTarget = NULL;
+
+    // Apply menu/layer toggle
+    if (apply_toggle_layer && g.NavWindow)
+    {
+        // Move to parent menu if necessary
+        ImGuiWindow* new_nav_window = g.NavWindow;
+        while ((new_nav_window->DC.NavLayerActiveMask & (1 << 1)) == 0 && (new_nav_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (new_nav_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
+            new_nav_window = new_nav_window->ParentWindow;
+        if (new_nav_window != g.NavWindow)
+        {
+            ImGuiWindow* old_nav_window = g.NavWindow;
+            FocusWindow(new_nav_window);
+            new_nav_window->NavLastChildNavWindow = old_nav_window;
+        }
+        g.NavDisableHighlight = false;
+        g.NavDisableMouseHover = true;
+        NavRestoreLayer((g.NavWindow->DC.NavLayerActiveMask & (1 << 1)) ? (g.NavLayer ^ 1) : 0);
+    }
+}
+
+// Window has already passed the IsWindowNavFocusable()
+static const char* GetFallbackWindowNameForWindowingList(ImGuiWindow* window)
+{
+    if (window->Flags & ImGuiWindowFlags_Popup)
+        return "(Popup)";
+    if ((window->Flags & ImGuiWindowFlags_MenuBar) && strcmp(window->Name, "##MainMenuBar") == 0)
+        return "(Main menu bar)";
+    return "(Untitled)";
+}
+
+// Overlay displayed when using CTRL+TAB. Called by EndFrame().
+void ImGui::NavUpdateWindowingList()
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavWindowingTarget != NULL);
+
+    if (g.NavWindowingTimer < NAV_WINDOWING_LIST_APPEAR_DELAY)
+        return;
+
+    if (g.NavWindowingList == NULL)
+        g.NavWindowingList = FindWindowByName("###NavWindowingList");
+    SetNextWindowSizeConstraints(ImVec2(g.IO.DisplaySize.x * 0.20f, g.IO.DisplaySize.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
+    SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
+    PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
+    Begin("###NavWindowingList", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings);
+    for (int n = g.Windows.Size - 1; n >= 0; n--)
+    {
+        ImGuiWindow* window = g.Windows[n];
+        if (!IsWindowNavFocusable(window))
+            continue;
+        const char* label = window->Name;
+        if (label == FindRenderedTextEnd(label))
+            label = GetFallbackWindowNameForWindowingList(window);
+        Selectable(label, g.NavWindowingTarget == window);
+    }
+    End();
+    PopStyleVar();
+}
+
+//-----------------------------------------------------------------------------
+// COLUMNS
+//-----------------------------------------------------------------------------
+
 void ImGui::NextColumn()
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -13627,94 +8103,6 @@
         BeginColumns(id, columns_count, flags);
 }
 
-void ImGui::Indent(float indent_w)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    window->DC.Indent.x += (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
-    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
-}
-
-void ImGui::Unindent(float indent_w)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    window->DC.Indent.x -= (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
-    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
-}
-
-void ImGui::TreePush(const char* str_id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    PushID(str_id ? str_id : "#TreePush");
-}
-
-void ImGui::TreePush(const void* ptr_id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    PushID(ptr_id ? ptr_id : (const void*)"#TreePush");
-}
-
-void ImGui::TreePushRawID(ImGuiID id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    window->IDStack.push_back(id);
-}
-
-void ImGui::TreePop()
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    Unindent();
-
-    window->DC.TreeDepth--;
-    if (g.NavMoveDir == ImGuiDir_Left && g.NavWindow == window && NavMoveRequestButNoResultYet())
-        if (g.NavIdIsAlive && (window->DC.TreeDepthMayJumpToParentOnPop & (1 << window->DC.TreeDepth)))
-        {
-            SetNavID(window->IDStack.back(), g.NavLayer);
-            NavMoveRequestCancel();
-        }
-    window->DC.TreeDepthMayJumpToParentOnPop &= (1 << window->DC.TreeDepth) - 1;
-
-    IM_ASSERT(window->IDStack.Size > 1); // There should always be 1 element in the IDStack (pushed during window creation). If this triggers you called TreePop/PopID too much.
-    PopID();
-}
-
-void ImGui::Value(const char* prefix, bool b)
-{
-    Text("%s: %s", prefix, (b ? "true" : "false"));
-}
-
-void ImGui::Value(const char* prefix, int v)
-{
-    Text("%s: %d", prefix, v);
-}
-
-void ImGui::Value(const char* prefix, unsigned int v)
-{
-    Text("%s: %d", prefix, v);
-}
-
-void ImGui::Value(const char* prefix, float v, const char* float_format)
-{
-    if (float_format)
-    {
-        char fmt[64];
-        ImFormatString(fmt, IM_ARRAYSIZE(fmt), "%%s: %s", float_format);
-        Text(fmt, prefix, v);
-    }
-    else
-    {
-        Text("%s: %.3f", prefix, v);
-    }
-}
-
 //-----------------------------------------------------------------------------
 // DRAG AND DROP
 //-----------------------------------------------------------------------------
@@ -14003,6 +8391,397 @@
 }
 
 //-----------------------------------------------------------------------------
+// LOGGING
+//-----------------------------------------------------------------------------
+
+// Pass text data straight to log (without being displayed)
+void ImGui::LogText(const char* fmt, ...)
+{
+    ImGuiContext& g = *GImGui;
+    if (!g.LogEnabled)
+        return;
+
+    va_list args;
+    va_start(args, fmt);
+    if (g.LogFile)
+        vfprintf(g.LogFile, fmt, args);
+    else
+        g.LogClipboard.appendfv(fmt, args);
+    va_end(args);
+}
+
+// Internal version that takes a position to decide on newline placement and pad items according to their depth.
+// We split text into individual lines to add current tree level padding
+void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    if (!text_end)
+        text_end = FindRenderedTextEnd(text, text_end);
+
+    const bool log_new_line = ref_pos && (ref_pos->y > window->DC.LogLinePosY + 1);
+    if (ref_pos)
+        window->DC.LogLinePosY = ref_pos->y;
+
+    const char* text_remaining = text;
+    if (g.LogStartDepth > window->DC.TreeDepth)  // Re-adjust padding if we have popped out of our starting depth
+        g.LogStartDepth = window->DC.TreeDepth;
+    const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth);
+    for (;;)
+    {
+        // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry.
+        const char* line_end = text_remaining;
+        while (line_end < text_end)
+            if (*line_end == '\n')
+                break;
+            else
+                line_end++;
+        if (line_end >= text_end)
+            line_end = NULL;
+
+        const bool is_first_line = (text == text_remaining);
+        bool is_last_line = false;
+        if (line_end == NULL)
+        {
+            is_last_line = true;
+            line_end = text_end;
+        }
+        if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
+        {
+            const int char_count = (int)(line_end - text_remaining);
+            if (log_new_line || !is_first_line)
+                LogText(IM_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining);
+            else
+                LogText(" %.*s", char_count, text_remaining);
+        }
+
+        if (is_last_line)
+            break;
+        text_remaining = line_end + 1;
+    }
+}
+
+// Start logging ImGui output to TTY
+void ImGui::LogToTTY(int max_depth)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = stdout;
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+// Start logging ImGui output to given file
+void ImGui::LogToFile(int max_depth, const char* filename)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    if (!filename)
+    {
+        filename = g.IO.LogFilename;
+        if (!filename)
+            return;
+    }
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = ImFileOpen(filename, "ab");
+    if (!g.LogFile)
+    {
+        IM_ASSERT(g.LogFile != NULL); // Consider this an error
+        return;
+    }
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+// Start logging ImGui output to clipboard
+void ImGui::LogToClipboard(int max_depth)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = NULL;
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+void ImGui::LogFinish()
+{
+    ImGuiContext& g = *GImGui;
+    if (!g.LogEnabled)
+        return;
+
+    LogText(IM_NEWLINE);
+    if (g.LogFile != NULL)
+    {
+        if (g.LogFile == stdout)
+            fflush(g.LogFile);
+        else
+            fclose(g.LogFile);
+        g.LogFile = NULL;
+    }
+    if (g.LogClipboard.size() > 1)
+    {
+        SetClipboardText(g.LogClipboard.begin());
+        g.LogClipboard.clear();
+    }
+    g.LogEnabled = false;
+}
+
+// Helper to display logging buttons
+void ImGui::LogButtons()
+{
+    ImGuiContext& g = *GImGui;
+
+    PushID("LogButtons");
+    const bool log_to_tty = Button("Log To TTY"); SameLine();
+    const bool log_to_file = Button("Log To File"); SameLine();
+    const bool log_to_clipboard = Button("Log To Clipboard"); SameLine();
+    PushItemWidth(80.0f);
+    PushAllowKeyboardFocus(false);
+    SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL);
+    PopAllowKeyboardFocus();
+    PopItemWidth();
+    PopID();
+
+    // Start logging at the end of the function so that the buttons don't appear in the log
+    if (log_to_tty)
+        LogToTTY(g.LogAutoExpandMaxDepth);
+    if (log_to_file)
+        LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename);
+    if (log_to_clipboard)
+        LogToClipboard(g.LogAutoExpandMaxDepth);
+}
+
+//-----------------------------------------------------------------------------
+// SETTINGS
+//-----------------------------------------------------------------------------
+
+void ImGui::MarkIniSettingsDirty()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.SettingsDirtyTimer <= 0.0f)
+        g.SettingsDirtyTimer = g.IO.IniSavingRate;
+}
+
+void ImGui::MarkIniSettingsDirty(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+    if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings))
+        if (g.SettingsDirtyTimer <= 0.0f)
+            g.SettingsDirtyTimer = g.IO.IniSavingRate;
+}
+
+static ImGuiWindowSettings* CreateNewWindowSettings(const char* name)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsWindows.push_back(ImGuiWindowSettings());
+    ImGuiWindowSettings* settings = &g.SettingsWindows.back();
+    settings->Name = ImStrdup(name);
+    settings->ID = ImHash(name, 0);
+    return settings;
+}
+
+ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = 0; i != g.SettingsWindows.Size; i++)
+        if (g.SettingsWindows[i].ID == id)
+            return &g.SettingsWindows[i];
+    return NULL;
+}
+
+void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
+{
+    size_t file_data_size = 0;
+    char* file_data = (char*)ImFileLoadToMemory(ini_filename, "rb", &file_data_size);
+    if (!file_data)
+        return;
+    LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
+    ImGui::MemFree(file_data);
+}
+
+ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
+{
+    ImGuiContext& g = *GImGui;
+    const ImGuiID type_hash = ImHash(type_name, 0, 0);
+    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
+        if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
+            return &g.SettingsHandlers[handler_n];
+    return NULL;
+}
+
+// Zero-tolerance, no error reporting, cheap .ini parsing
+void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.Initialized);
+    IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
+
+    // For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
+    // For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
+    if (ini_size == 0)
+        ini_size = strlen(ini_data);
+    char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
+    char* buf_end = buf + ini_size;
+    memcpy(buf, ini_data, ini_size);
+    buf[ini_size] = 0;
+
+    void* entry_data = NULL;
+    ImGuiSettingsHandler* entry_handler = NULL;
+
+    char* line_end = NULL;
+    for (char* line = buf; line < buf_end; line = line_end + 1)
+    {
+        // Skip new lines markers, then find end of the line
+        while (*line == '\n' || *line == '\r')
+            line++;
+        line_end = line;
+        while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
+            line_end++;
+        line_end[0] = 0;
+
+        if (line[0] == '[' && line_end > line && line_end[-1] == ']')
+        {
+            // Parse "[Type][Name]". Note that 'Name' can itself contains [] characters, which is acceptable with the current format and parsing code.
+            line_end[-1] = 0;
+            const char* name_end = line_end - 1;
+            const char* type_start = line + 1;
+            char* type_end = (char*)(intptr_t)ImStrchrRange(type_start, name_end, ']');
+            const char* name_start = type_end ? ImStrchrRange(type_end + 1, name_end, '[') : NULL;
+            if (!type_end || !name_start)
+            {
+                name_start = type_start; // Import legacy entries that have no type
+                type_start = "Window";
+            }
+            else
+            {
+                *type_end = 0; // Overwrite first ']'
+                name_start++;  // Skip second '['
+            }
+            entry_handler = FindSettingsHandler(type_start);
+            entry_data = entry_handler ? entry_handler->ReadOpenFn(&g, entry_handler, name_start) : NULL;
+        }
+        else if (entry_handler != NULL && entry_data != NULL)
+        {
+            // Let type handler parse the line
+            entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
+        }
+    }
+    ImGui::MemFree(buf);
+    g.SettingsLoaded = true;
+}
+
+void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsDirtyTimer = 0.0f;
+    if (!ini_filename)
+        return;
+
+    size_t ini_data_size = 0;
+    const char* ini_data = SaveIniSettingsToMemory(&ini_data_size);
+    FILE* f = ImFileOpen(ini_filename, "wt");
+    if (!f)
+        return;
+    fwrite(ini_data, sizeof(char), ini_data_size, f);
+    fclose(f);
+}
+
+// Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer
+const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsDirtyTimer = 0.0f;
+    g.SettingsIniData.Buf.resize(0);
+    g.SettingsIniData.Buf.push_back(0);
+    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
+    {
+        ImGuiSettingsHandler* handler = &g.SettingsHandlers[handler_n];
+        handler->WriteAllFn(&g, handler, &g.SettingsIniData);
+    }
+    if (out_size)
+        *out_size = (size_t)g.SettingsIniData.size();
+    return g.SettingsIniData.c_str();
+}
+
+static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
+{
+    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHash(name, 0));
+    if (!settings)
+        settings = CreateNewWindowSettings(name);
+    return (void*)settings;
+}
+
+static void SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
+{
+    ImGuiWindowSettings* settings = (ImGuiWindowSettings*)entry;
+    float x, y;
+    int i;
+    if (sscanf(line, "Pos=%f,%f", &x, &y) == 2)         settings->Pos = ImVec2(x, y);
+    else if (sscanf(line, "Size=%f,%f", &x, &y) == 2)   settings->Size = ImMax(ImVec2(x, y), GImGui->Style.WindowMinSize);
+    else if (sscanf(line, "Collapsed=%d", &i) == 1)     settings->Collapsed = (i != 0);
+}
+
+static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
+{
+    // Gather data from windows that were active during this session
+    ImGuiContext& g = *imgui_ctx;
+    for (int i = 0; i != g.Windows.Size; i++)
+    {
+        ImGuiWindow* window = g.Windows[i];
+        if (window->Flags & ImGuiWindowFlags_NoSavedSettings)
+            continue;
+
+        ImGuiWindowSettings* settings = (window->SettingsIdx != -1) ? &g.SettingsWindows[window->SettingsIdx] : ImGui::FindWindowSettings(window->ID);
+        if (!settings)
+        {
+            settings = CreateNewWindowSettings(window->Name);
+            window->SettingsIdx = g.SettingsWindows.index_from_pointer(settings);
+        }
+        IM_ASSERT(settings->ID == window->ID);
+        settings->Pos = window->Pos;
+        settings->Size = window->SizeFull;
+        settings->Collapsed = window->Collapsed;
+    }
+
+    // Write a buffer
+    // If a window wasn't opened in this session we preserve its settings
+    buf->reserve(buf->size() + g.SettingsWindows.Size * 96); // ballpark reserve
+    for (int i = 0; i != g.SettingsWindows.Size; i++)
+    {
+        const ImGuiWindowSettings* settings = &g.SettingsWindows[i];
+        if (settings->Pos.x == FLT_MAX)
+            continue;
+        const char* name = settings->Name;
+        if (const char* p = strstr(name, "###"))  // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID()
+            name = p;
+        buf->appendf("[%s][%s]\n", handler->TypeName, name);
+        buf->appendf("Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
+        buf->appendf("Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
+        buf->appendf("Collapsed=%d\n", settings->Collapsed);
+        buf->appendf("\n");
+    }
+}
+
+//-----------------------------------------------------------------------------
 // PLATFORM DEPENDENT HELPERS
 //-----------------------------------------------------------------------------
 
@@ -14119,7 +8898,7 @@
 #endif
 
 //-----------------------------------------------------------------------------
-// HELP, METRICS
+// METRICS/DEBUG WINDOW
 //-----------------------------------------------------------------------------
 
 void ImGui::ShowMetricsWindow(bool* p_open)
diff --git a/imgui.h b/imgui.h
index 52caf45..97f79a8 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (headers)
 
 // See imgui.cpp file for documentation.
@@ -23,8 +23,8 @@
 
 // Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY00 then bounced up to XYY01 when release tagging happens)
-#define IMGUI_VERSION               "1.63"
-#define IMGUI_VERSION_NUM           16301
+#define IMGUI_VERSION               "1.64"
+#define IMGUI_VERSION_NUM           16401
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert))
 
 // Define attributes of all API symbols declarations (e.g. for DLL under Windows)
diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index 49ef8bc..1702474 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (demo code)
 
 // Message to the person tempted to delete this file when integrating ImGui into their code base:
diff --git a/imgui_draw.cpp b/imgui_draw.cpp
index d7044ca..98fbc45 100644
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@@ -1,14 +1,21 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (drawing and font code)
 
-// Contains implementation for
-// - Default styles
-// - ImDrawList
-// - ImDrawData
-// - ImFontAtlas
-// - Internal Render Helpers
-// - ImFont
-// - Default font data
+/*
+
+Index of this file:
+- Cruft for stb_truetype/stb_rectpack implementation
+- Style functions (default style)
+- ImDrawList
+- ImDrawData
+- ShadeVertsXXX helpers functions
+- ImFontConfig
+- ImFontAtlas
+- ImFont
+- Internal Render Helpers
+- Default font data
+
+*/
 
 #if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
 #define _CRT_SECURE_NO_WARNINGS
diff --git a/imgui_internal.h b/imgui_internal.h
index f9d55b3..81116ce 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (internal structures/api)
 
 // You may use this file to debug, understand or extend ImGui features but we don't provide any guarantee of forward compatibility!
@@ -1137,8 +1137,9 @@
     // Settings
     IMGUI_API void                  MarkIniSettingsDirty();
     IMGUI_API void                  MarkIniSettingsDirty(ImGuiWindow* window);
-    IMGUI_API ImGuiSettingsHandler* FindSettingsHandler(const char* type_name);
+    IMGUI_API ImGuiWindowSettings*  CreateNewWindowSettings(const char* name);
     IMGUI_API ImGuiWindowSettings*  FindWindowSettings(ImGuiID id);
+    IMGUI_API ImGuiSettingsHandler* FindSettingsHandler(const char* type_name);
 
     // Basic Accessors
     inline ImGuiID          GetItemID()     { ImGuiContext& g = *GImGui; return g.CurrentWindow->DC.LastItemId; }

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
deleted file mode 100644
index c0bd198..0000000
--- a/CHANGELOG.txt
+++ /dev/null
@@ -1,958 +0,0 @@
-dear imgui
-CHANGELOG
-
-This document holds the user-facing changelog that we also use in release notes.
-We generally fold multiple commits pertaining to the same topic as a single entry.
-Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
-
-RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
-REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
-COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
-
-WHEN TO UPDATE?
-
-- Keeping your copy of dear imgui updated once in a while is recommended.
-- It is generally safe to sync to the latest commit in master. 
-  The library is fairly stable and regressions tends to be fixed fast when reported.
-
-HOW TO UPDATE?
-
-- Overwrite every file except imconfig.h (if you have modified it).
-- You may also locally branch to modify imconfig.h and merge latest into your branch.
-- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
-- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
-- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
-- You may diff your previous Changelog with the one you just copied and read that diff.
-- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
-  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
-  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
-- Please report any issue!
-
-
------------------------------------------------------------------------
- VERSION 1.63 (Released 2018-08-29)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
-- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
-- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
-  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
-- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
-  Kept redirection types (will obsolete). 
-- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
-- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
-  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
-- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
-- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
-
-Other Changes:
-
-- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
-- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
-- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
-- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
-  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
-- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
-- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
-- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
-- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
-  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
-- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
-- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
-- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
-- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
-  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
-  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
-  until a better solution is found.
-- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
-  related to the addition of IsItemDeactivated()). (#1875, #143)
-- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
-- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
-  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
-- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
-- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
-- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
-- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
-- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
-- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
-- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
-- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
-- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
-- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
-- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
-- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
-- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
-- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
-- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
-  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
-- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
-- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
-  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
-- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
-- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
-- Demo: Added basic Drag and Drop demo. (#143)
-- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
-  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
-- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
-- Examples: Tweaked the main.cpp of each example.
-- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
-- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
-- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
-- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
-- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
-- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
-- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
-- Examples: OpenGL3: Added error output when shaders fail to compile/link.
-- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
-- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
-- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
-- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
-- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
-- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
-
-
------------------------------------------------------------------------
- VERSION 1.62 (Released 2018-06-22)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
-  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
-  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
-  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
-- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
-
-Other Changes:
-
-- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
-  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
-  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
-      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
-      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
-  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
-    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
-    so you may study or grab one half of the code and not the other.
-  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
-    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
-    easy update path to support multi-viewports later (for future ImGui 1.7x).
-  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
-    expect to have to reshuffle a few things. 
-  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
-  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
-  - Read examples/README.txt for details.
-- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
-- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
-  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
-  holding return on the same value). (#820, #956, #1875)
-- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
-- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
-- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
-- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
-- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
-- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
-- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
-- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
-- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
-- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
-- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
-- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
-- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
-- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
-- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
-- Examples: SDL+Vulkan: Added SDL+Vulkan example.
-- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
-- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
-- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
-- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
-- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
-- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
-- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
-- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
-- Internals: PushItemFlag() flags are inherited by BeginChild().
-
-
------------------------------------------------------------------------
- VERSION 1.61 (Released 2018-05-14)
------------------------------------------------------------------------
-
-Breaking Changes:
-
-- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
-  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
-  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
-  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
-- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
-  consistent with other functions. Kept redirection functions (will obsolete).
-- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
-
-Other Changes:
-
-- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
-- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
-- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
-- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
-- Window: Fixed the default proportional item width lagging by one frame on resize.
-- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
-- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
-- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
-- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
-- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
-- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
-- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
-- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
-- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
-- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
-  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
-- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
-- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
-- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
-- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
-- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
-- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
-- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
-- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
-- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
-- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
-- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
-  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
-- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
-- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
-- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
-- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
-- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
-- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
-- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
-- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
-- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
-- Various minor fixes, tweaks, refactoring, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.60 (Released 2018-04-07)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
-
-The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
-Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
-Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
-
-Breaking Changes:
-
-- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
-  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
-- Reorganized context handling to be more explicit: (#1599)
-  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
-  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
-  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
-  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
-  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
-- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
-- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
-- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
-- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
-- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
-- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
-- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
-- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
-- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
-
-Other Changes:
-
-- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
-- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
-  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
-- To use Gamepad Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
-  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
-  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
-  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
-- To use Keyboard Navigation:
-  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
-  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
-  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
-    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
-- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
-- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
-- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
-- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
-- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
-- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
-- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
-  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
-- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
-- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
-- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
-- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
-  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
-  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
-  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
-  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
-  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
-  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
-- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
-- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
-- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
-- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
-- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
-- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
-- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
-- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
-- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
-- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
-- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
-- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
-- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
-- Style: Enable window border by default. (#707)
-- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
-- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
-- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
-- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
-- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
-- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
-- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
-- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
-- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
-- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
-- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
-- Columns: Clear offsets data when columns count changed. (#1525)
-- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
-- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
-- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
-- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
-- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
-- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
-- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
-- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
-- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
-- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
-- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
-- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
-- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
-- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
-- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
-  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
-- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
-- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
-- Fonts: Moved extra_fonts/ to misc/fonts/.
-- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
-- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
-- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
-- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
-- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
-- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
-- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
-- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
-- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
-- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
-- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
-- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
-- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
-- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
-- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
-- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
-- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
-  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
-- Metrics: Added display of Columns state.
-- Demo: Improved Selectable() examples. (#1528)
-- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
-- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
-- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
-- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
-- Examples: Using Dark theme by default. (#707). Tweaked demo code.
-- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
-- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
-- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
-- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
-- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
-- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
-- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
-- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
-- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
-- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
-- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
-- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
-- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
-- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
-- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
-- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
-- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
-- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
-- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
-- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
-- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
-- Examples: Vulkan: Visual Studio: Added .vcxproj file.
-- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
-- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
-- Various fixes, tweaks, internal refactoring, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.53 (Released 2017-12-25)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
-
-Breaking Changes:
-
-- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
-- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
-- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
-- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
-- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
-- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
-- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
-- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
-  Use `ImGui::ShowStyleEditor()` to look them up.
-  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
-  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
-- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
-- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
-- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
-- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
-- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
-
-Other Changes:
-
-- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
-- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
-- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
-- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
-  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
-  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
-  - See ImGuiDragDropFlags for various options.
-  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
-  - The API is tagged as Beta as it still may be subject to small changes.
-- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
-- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
-- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
-- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
-- Style: Added style.PopupRounding setting. (#1112)
-- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
-  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
-- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
-- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
-- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
-- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
-- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
-- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
-  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
-- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
-- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
-- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
-- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
-- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
-- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
-- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
-- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
-- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
-- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
-- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
-- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
-- Window: Made it possible to use SetNextWindowPos() on a child window.
-- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
-- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
-- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
-- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
-- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
-- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
-  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
-- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
-- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
-- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
-- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
-- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
-- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
-- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
-- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
-- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
-- IsWindowHovered(): Always return true when current window is being moved. (#1382)
-- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
-- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
-- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
-- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
-- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
-- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
-- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
-- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
-- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
-- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
-- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
-- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
-- Indent(), Unindent(): Allow passing negative values.
-- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
-- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
-- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
-- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
-- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
-- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
-- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
-- ImFont: Added GetDebugName() helper.
-- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
-- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
-- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
-- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
-- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
-- ImVector: Added ImVector::push_front() helper.
-- ImVector: Added ImVector::contains() helper.
-- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
-- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
-  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
-- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
-- Internals: Added SplitterBehavior() helper. (#319)
-- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
-- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
-- Demo: Added ShowFontSelector() showing loaded fonts.
-- Demo: Added ShowStyleSelector() to select among default styles. (#707)
-- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
-- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
-- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
-- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
-- Demo: Console: Fixed context menu issue. (#1404)
-- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
-- Demo: Constrained Resize: Added more test cases. (#1417)
-- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
-- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
-- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
-- Demo: Display better mouse cursor info for debugging backends.
-- Demo: Stopped using rand() function in demo code.
-- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
-- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
-- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
-- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
-- Various fixes, optimizations, comments.
-
-
------------------------------------------------------------------------
- VERSION 1.52 (2017-10-27)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
-
-Breaking Changes:
-
-- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
-- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
-- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
-- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
-- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
-- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
-- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
-- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
-
-Other Changes:
-
-- ProgressBar: fixed rendering when straddling rounded area. (#1296)
-- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
-- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
-- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
-- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
-- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
-  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
-  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
-  - `ImGuiHoveredFlags_AllowWhenOverlapped`
-  - `ImGuiHoveredFlags_RectOnly`
-- Input: Added `IsMousePosValid()` helper.
-- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
-- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
-- CheckBox: Now rendering a tick mark instead of a full square.
-- ColorEdit4: Added "Copy as..." option in context menu. (#346)
-- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
-- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
-- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
-- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
-- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
-- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
-- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
-- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
-- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
-- Window: Fixed title bar color of top-most window under a modal window.
-- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
-- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
-- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
-- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
-- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
-- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
-- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
-- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
-- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
-- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
-- MenuItem: Made tick mark thicker (thick mark?).
-- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
-- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
-- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
-- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
-- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
-  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
-- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
-- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
-- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
-- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
-- ImVector: added resize() variant with initialization value.
-- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
-- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
-- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
-- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
-- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
-- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
-- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
-- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
-- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
-- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
-- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
-- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
-- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
-- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
-- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
-- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
-- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
-- Various tweaks, fixes and documentation changes.
-
-Beta Navigation Branch:
-(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
-(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
-- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
-- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
-- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
-- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
-- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
-- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
-- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
-- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
-- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
-- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
-- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
-- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
-- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
-- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
-- Nav: Various internal refactoring.
-
-
------------------------------------------------------------------------
- VERSION 1.51 (2017-08-24)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
-
-Breaking Changes:
-
-Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
-
-- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
-- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
-- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
-- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
-- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
-- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
-- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
-- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
-- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
-- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
-- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
-
-Other Changes:
-
-- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
-- Added flags to `ColorButton()`. (#346)
-- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
-- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
-- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
-- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
-- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
-- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
-- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
-- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
-- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
-- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
-- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
-- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
-- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
-- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
-- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
-- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
-- Columns: Fixed first column appearing wider than others. (#1266)
-- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
-- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
-- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
-- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
-- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
-- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
-- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
-- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
-- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
-- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
-- Removed an unnecessary dependency on int64_t which failed on some older compilers.
-- Demo: Rearranged everything under Widgets in a more consistent way.
-- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
-- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
-- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
-- Various other small fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.50 (2017-06-02)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
-
-Breaking Changes:
-
-- Added a void* user_data parameter to Clipboard function handlers. (#875)
-- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
-- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
-- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
-- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
-- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
-
-Other Changes:
-
-- InputText(): Added support for CTRL+Backspace (delete word).
-- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
-- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
-- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
-- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
-- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
-- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
-- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
-- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
-- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
-- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
-- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
-- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
-- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
-- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
-- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
-- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
-- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
-- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
-- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
-- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
-- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
-- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
-- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
-- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
-- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
-- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
-- BulletText(): Fixed stopping to display formatted string after the '##' mark.
-- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
-- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
-- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
-- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
-- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
-- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
-- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
-- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
-- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
-- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
-- Shutdown() clear out some remaining pointers for sanity. (#836)
-- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
-- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
-- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
-- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
-- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
-- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
-- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
-- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
-- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
-- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
-- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
-- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
-- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
-- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
-- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
-- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
-- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
-- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
-- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
-- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
-- Demo: Added an extra 3-way columns demo.
-- Demo: ShowStyleEditor: show font character map / grid in more details.
-- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
-- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
-- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
-- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
-- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
-- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
-- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
-- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
-- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
-- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
-- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
-- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
-- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
-- Examples: SDL2: Added build .bat files for Win32.
-- Added various links to language/engine bindings.
-- Various other minor fixes, tweaks, comments, optimizations.
-
-
------------------------------------------------------------------------
- VERSION 1.49 (2016-05-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
-
-Breaking Changes:
-
-- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
-- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
-- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
-- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
-- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
-  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
-
-    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
-    {
-       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
-       float k = title_bg_col.w / new_a;
-       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
-    }
-
-Other changes:
-
-- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
-- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
-- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
-- Added IsRootWindowOrAnyChildHovered() helper. (#615)
-- Added TreeNodeEx() functions. (#581, #600, #190)
-- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
-- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
-- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
-- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
-- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
-- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
-- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
-- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
-- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
-- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
-- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
-- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
-- Added IsItemClicked() helper. (#581)
-- Added CollapsingHeader() variant with close button. (#600)
-- Fixed MenuBar missing lower border when borders are enabled.
-- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
-- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
-- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
-  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
-- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
-- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
-- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
-- Bullet(), BulletText(): Slightly bigger. Less polygons.
-- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
-- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
-- BeginGroup(): fixed using within Columns set. (#630)
-- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
-- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
-- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
-- MenuItem(): the check mark renders in disabled color when menu item is disabled.
-- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
-- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
-- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
-- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
-- ImFont: Added RenderChar() helper.
-- ImFont: Added AddRemapChar() helper. (#609)
-- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
-- ImGuiStorage: Added bool helper functions for completeness.
-- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
-- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
-- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
-- Examples: DirectX9: save/restore all device state.
-- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
-- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
-- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
-- Examples: SDL: Initialize video+timer subsystem only.
-- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
-
-
------------------------------------------------------------------------
- VERSION 1.48 (2016-04-09)
------------------------------------------------------------------------
-
-Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
-
-Breaking Changes:
-
-- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
-- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
-- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
-
-Other Changes:
-
-- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
-- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
-- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
-- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
-- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
-- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
-- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
-- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
-- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
-- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
-- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
-- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
-- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
-- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
-- Combo(): Right-most button stays highlighted when pop-up is open.
-- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
-- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
-- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
-- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
-- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
-- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
-- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
-- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
-- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
-- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
-- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
-- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
-- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
-- ImDrawList: Allow windows with only a callback only to be functional. (#524)
-- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
-- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
-- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
-- ImDrawList: Added AddTriangle().
-- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
-- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
-- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
-- ImTextBuffer: Fixed empty() helper which was utterly broken.
-- Metrics: allow to inspect individual triangles in draw calls.
-- Demo: added more draw primitives in the Custom Rendering example. (#457)
-- Demo: extra comments and example for PushItemWidth(-1) patterns.
-- Demo: InputText password demo filters out blanks. (#515)
-- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
-- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
-- Fixed compilation on DragonFly BSD (@mneumann) (#563)
-- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
-- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
-- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
-- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
-- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
-- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
-- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
-- Various extra comments and clarification in the code.
-- Various other fixes and optimizations.
-
------------------------------------------------------------------------
-
-For older version, see https://github.com/ocornut/imgui/releases
-
diff --git a/README.md b/README.md
deleted file mode 100644
index e2624d0..0000000
--- a/README.md
+++ /dev/null
@@ -1,337 +0,0 @@
-dear imgui,
-=====
-[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
-
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
-
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
-
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
-
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
-
-### Usage
-
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
-
-Code:
-```cpp
-ImGui::Text("Hello, world %d", 123);
-if (ImGui::Button("Save"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
-
-Code:
-```cpp
-// Create a window called "My First Tool", with a menu bar.
-ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
-if (ImGui::BeginMenuBar())
-{
-    if (ImGui::BeginMenu("File"))
-    {
-        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
-        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
-        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
-        ImGui::EndMenu();
-    }
-    ImGui::EndMenuBar();
-}
-
-// Edit a color (stored as ~4 floats)
-ImGui::ColorEdit4("Color", my_color);
-
-// Plot some values
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
-// Display contents in a scrolling region
-ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
-ImGui::BeginChild("Scrolling");
-for (int n = 0; n < 50; n++)
-    ImGui::Text("%04d: Some text", n);
-ImGui::EndChild();
-ImGui::End();
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
-
-### How it works
-
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
-
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
-
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
-
-Demo Binaries
--------------
-
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
-
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
-
-Bindings
---------
-
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
-
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
-
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-
-Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
-
-Roadmap
--------
-Some of the goals for 2018 are:
-- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
-- Make Columns better. (they are currently pretty terrible!)
-- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-
-Gallery
--------
-User screenshots:
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
-<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
-<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
-<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
-<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
-<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
-
-Various tools
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
-
-[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
-
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
-
-References
-----------
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
-
-Support Forums
---------------
-
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
-
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
-
-Frequently Asked Question (FAQ)
--------------------------------
-
-<b>Where is the documentation?</b>
-
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
-
-<b>Which version should I get?</b>
-
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
-
-<b>Who uses Dear ImGui?</b>
-
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
-
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
-
-<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
-<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
-<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
-<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
-<br><b>How can I load a different font than the default?</b>
-<br><b>How can I easily use icons in my application?</b>
-<br><b>How can I load multiple fonts?</b>
-<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
-<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
-<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
-<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
-<br><b>How can I help?</b>
-
-See the FAQ in imgui.cpp for answers.
-
-<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
-
-<b>Can you create elaborate/serious tools with Dear ImGui?</b>
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-<b>Can you reskin the look of Dear ImGui?</b>
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-<b>Why using C++ (as opposed to C)?</b>
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
-
-Support dear imgui
-------------------
-
-<b>How can I help financing further development of Dear ImGui?</b>
-
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
-
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
-
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
-
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
-
-Credits
--------
-
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
-
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
-
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
-
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
-
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
-
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-
-Double-chocolate sponsors:
-- Blizzard Entertainment
-- Media Molecule
-- Mobigame
-- Insomniac Games
-- Aras Pranckevičius
-- Lizardcube
-- Greggman
-- DotEmu
-- Nadeo
-
-Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
-
-Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
-
-And other supporters; thanks!
-(Please contact me or PR if you would like to be added or removed from this list)
-
-License
--------
-
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/TODO.txt b/TODO.txt
deleted file mode 100644
index 2b76024..0000000
--- a/TODO.txt
+++ /dev/null
@@ -1,315 +0,0 @@
-dear imgui
-ISSUES & TODO LIST
-
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
-The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
-It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
-
- - doc/test: add a proper documentation+regression testing system (#435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
-
- - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- - window: allow resizing of child windows (possibly given min/max for each axis?.)
- - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
- - window: begin with *p_open == false could return false.
- - window: get size/pos helpers given names (see discussion in #249)
- - window: a collapsed window can be stuck behind the main menu bar?
- - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- - window: expose contents size. (#1045)
- - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
- - window: investigate better auto-positioning for new windows.
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
-
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
- - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
-
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
-
- - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
- - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
-
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
- - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- - input text: hover tooltip could show unclamped text
- - input text: option to Tab after an Enter validation.
- - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
- - input text multi-line: line numbers? status bar? (follow up on #200)
- - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- - input number: optional range min/max for Input*() functions
- - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- - input number: use mouse wheel to step up/down
- - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
-
- - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- - layout: horizontal layout helper (#97)
- - layout: horizontal flow until no space left (#404)
- - layout: more generic alignment state (left/right/centered) for single items?
- - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
- - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
- - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- - columns: flag to add horizontal separator above/below?
- - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
-
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
- - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
-
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- - plot: option/feature: draw the zero line
- - plot: option/feature: draw grid, vertical markers
- - plot: option/feature: draw unit
- - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
-
- - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
-
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
- - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
-
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
-
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
- - image/image button: misalignment on padded/bordered button?
- - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
- - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: relative dragging? + precision dragging
- - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
- - knob: rotating knob widget (#942)
- - drag float: up/down axis
- - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
-
- - combo: use clipper: make it easier to disable clipper with a single flag.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
- - combo: a way/helper to customize the combo preview (#1658)
- - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
- - listbox: multiple selection.
- - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- - listbox: user may want to initial scroll to focus on the one selected value?
- - listbox: expose hovered item for a basic ListBox
- - listbox: keyboard navigation.
- - listbox: scrolling should track modified selection.
-
-!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- - popups: clicking outside (to close popup) and holding shouldn't drag window below.
- - popups: add variant using global identifier similar to Begin/End (#402)
- - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modal windows are acting weird.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
- - shortcuts: local-style shortcut api, e.g. parse "&Save"
- - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
-
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
-
- - tree node / optimization: avoid formatting when clipped.
- - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- - tree node: leaf/non-leaf highlight mismatch.
-
- - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
-
-!- style: better default styles. (#707)
- - style: add a highlighted text color (for headers, etc.)
- - style: border types: out-screen, in-screen, etc. (#447)
- - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- - style: global scale setting.
- - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- - style editor: color child window height expressed in multiple of line height.
-
- - log: LogButtons() options for specifying depth and/or hiding depth slider
- - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
-
- - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
-
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
- - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
- - node/graph editor (#306)
- - pie menus patterns (#434)
- - markup: simple markup language for color change? (#902)
-
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
- - font: free the Alpha buffer if user only requested RGBA.
-!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
- - font: PushFontSize API (#1018)
- - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- - font/atlas: add a missing Glyphs.reserve()
- - font/atlas: incremental updates
- - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
- - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
- - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
-
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
- - nav: ESC within a menu of a child window seems to exit the child window.
- - nav: NavFlattened: ESC on a flattened child should select something.
- - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
- - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
- - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
-
- - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- - inputs: support track pad style scrolling & slider edit.
- - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
-
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
- - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
-
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
- - remote: make a system like RemoteImGui first-class citizen/project (#75)
-
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add vertical separator demo
- - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
- - examples: window minimize, maximize (#583)
- - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- - optimization: use another hash function than crc32, e.g. FNV1a
- - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
new file mode 100644
index 0000000..73ed974
--- /dev/null
+++ b/docs/CHANGELOG.txt
@@ -0,0 +1,980 @@
+dear imgui
+CHANGELOG
+
+This document holds the user-facing changelog that we also use in release notes.
+We generally fold multiple commits pertaining to the same topic as a single entry.
+Changes to the examples/bindings are included within the individual .cpp files in the examples/ folder.
+
+RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
+REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
+COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+
+WHEN TO UPDATE?
+
+- Keeping your copy of dear imgui updated once in a while is recommended.
+- It is generally safe to sync to the latest commit in master. 
+  The library is fairly stable and regressions tends to be fixed fast when reported.
+
+HOW TO UPDATE?
+
+- Overwrite every file except imconfig.h (if you have modified it).
+- You may also locally branch to modify imconfig.h and merge latest into your branch.
+- Read the `Breaking Changes` section (in imgui.cpp or here in the Changelog).
+- If you have a problem with a missing function/symbols, search for its name in the code, there will likely be a comment about it.
+- If you are dropping this repository in your codebase, please leave the demo and text files in there, they will be useful.
+- You may diff your previous Changelog with the one you just copied and read that diff.
+- You may enable `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in imconfig.h to forcefully disable legacy names and symbols. 
+  Doing it every once in a while is a good way to make sure you are not using obsolete symbols. Dear ImGui is in active development, 
+  and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
+- Please report any issue!
+
+
+-----------------------------------------------------------------------
+ VERSION 1.64 (Released 2018-08-31)
+-----------------------------------------------------------------------
+
+Changes:
+
+- Moved README, CHANGELOG and TODO files to the docs/ folder.
+  If you are updating dear imgui by copying files, take the chance to delete the old files.
+- Added imgui_widgets.cpp file, extracted and moved widgets code out of imgui.cpp into imgui_widgets.cpp.
+  Re-ordered some of the code remaining in imgui.cpp in cleared chunks.
+  NONE OF THE FUNCTIONS HAVE CHANGED. THE CODE IS SEMANTICALLY 100% IDENTICAL, BUT ALL FUNCTIONS WERE MOVED.
+  Because of this, any local modifications to imgui.cpp will likely conflict when you update.
+  If you have any modifications to imgui.cpp, it is suggested that you first update to 1.63, then
+  isolate your patches. You can peak at imgui_widgets.cpp from 1.64 to get a sense of what is included in it,
+  then separate your changes into several patches that can more easily be applied to 1.64 on a per-file basis.
+  What I found worked nicely for me, was to open the diff of the old patches in an interactive merge/diff tool,
+  search for the corresponding function in the new code and apply the chunks manually. 
+- As a reminder, if you have any change to imgui.cpp it is a good habit to discuss them on the github,
+  so a solution applicable on the Master branch can be found. If your company has changes that you cannot
+  disclose you may also contact me privately.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.63 (Released 2018-08-29)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features. Kept redirection enum (will obsolete).
+- Changed ImGui::GetTime() return value from float to double to avoid accumulating floating point imprecision over time.
+- Removed per-window ImGuiWindowFlags_ResizeFromAnySide Beta flag in favor `io.ConfigResizeWindowsFromEdges=true` to enable the feature globally. (#1495)
+  The feature is not currently enabled by default because it is not satisfying enough, but will eventually be.
+- InputText: Renamed ImGuiTextEditCallback to ImGuiInputTextCallback, ImGuiTextEditCallbackData to ImGuiInputTextCallbackData for consistency. 
+  Kept redirection types (will obsolete). 
+- InputText: Removed ImGuiTextEditCallbackData::ReadOnly since it is a duplication of (ImGuiTextEditCallbackData::Flags & ImGuiInputTextFlags_ReadOnly).
+- Renamed IsItemDeactivatedAfterChange() to IsItemDeactivatedAfterEdit() for consistency with new IsItemEdited() API. 
+  Kept redirection function (will obsolete soonish as IsItemDeactivatedAfterChange() is very recent).
+- Renamed io.OptCursorBlink to io.ConfigCursorBlink, io.OptMacOSXBehaviors to io.ConfigMacOSXBehaviors for consistency. (#1427, #473)
+- Removed obsolete redirection functions: CollapsingHeader() variation with 2 bools - marked obsolete in v1.49, May 2016.
+
+Other Changes:
+
+- ArrowButton: Fixed to honor PushButtonRepeat() setting (and internals' ImGuiItemFlags_ButtonRepeat).
+- ArrowButton: Setup current line text baseline so that ArrowButton() + SameLine() + Text() are aligned properly.
+- Nav: Added a CTRL+TAB window list and changed the highlight system accordingly. The change is motivated by upcoming Docking features. (#787)
+- Nav: Made CTRL+TAB skip menus + skip the current navigation window if is has the ImGuiWindow_NoNavFocus set. (#787)
+  While it was previously possible, you won't be able to CTRL-TAB out and immediately back in a window with the ImGuiWindow_NoNavFocus flag.
+- Window: Allow menu and popups windows from ignoring the style.WindowMinSize values so short menus/popups are not padded. (#1909)
+- Window: Added global io.ConfigResizeWindowsFromEdges option to enable resizing windows from their edges and from the lower-left corner. (#1495)
+- Window: Collapse button shows hovering highlight + clicking and dragging on it allows to drag the window as well. 
+- Added IsItemEdited() to query if the last item modified its value (or was pressed). This is equivalent to the bool returned by most widgets.
+  It is useful in some situation e.g. using InputText() with ImGuiInputTextFlags_EnterReturnsTrue. (#2034)
+- InputText: Added support for buffer size/capacity changes via the ImGuiInputTextFlags_CallbackResize flag. (#2006, #1443, #1008).
+- InputText: Fixed not tracking the cursor horizontally when modifying the text buffer through a callback.
+- InputText: Fixed minor off-by-one issue when submitting a buffer size smaller than the initial zero-terminated buffer contents.
+- InputText: Fixed a few pathological crash cases on single-line InputText widget with multiple millions characters worth of contents. 
+  Because the current text drawing function reserve for a worst-case amount of vertices and how we handle horizontal clipping,
+  we currently just avoid displaying those single-line widgets when they are over a threshold of 2 millions characters, 
+  until a better solution is found.
+- Drag and Drop: Fixed an incorrect assert when dropping a source that is submitted after the target (bug introduced with 1.62 changes 
+  related to the addition of IsItemDeactivated()). (#1875, #143)
+- Drag and Drop: Fixed ImGuiDragDropFlags_SourceNoDisableHover to affect hovering state prior to calling IsItemHovered() + fixed description. (#143)
+- Drag and Drop: Calling BeginTooltip() between a BeginDragSource()/EndDragSource() or BeginDropTarget()/EndDropTarget() uses adjusted tooltip
+  settings matching the one created when calling BeginDragSource() without the ImGuiDragDropFlags_SourceNoPreviewTooltip flag. (#143)
+- Drag and Drop: Payload stays available and under the mouse if the source stops being submitted, however the tooltip is replaced by "...". (#1725)
+- Drag and Drop: Added ImGuiDragDropFlags_SourceAutoExpirePayload flag to force payload to expire if the source stops being submitted. (#1725, #143).
+- IsItemHovered(): Added ImGuiHoveredFlags_AllowWhenDisabled flag to query hovered status on disabled items. (#1940, #211)
+- Selectable: Added ImGuiSelectableFlags_Disabled flag in the public API. (#211)
+- ColorEdit4: Fixed a bug when text input or drag and drop leading to unsaturated HSV values would erroneously alter the resulting color. (#2050)
+- Misc: Added optional misc/stl/imgui_stl.h wrapper to use with STL types (e.g. InputText with std::string). (#2006, #1443, #1008)
+- Misc: Added IMGUI_VERSION_NUM for easy compile-time testing. (#2025)
+- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut] 
+- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
+- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
+- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
+- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).  
+- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
+- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
+- ImDrawList: Improved handling for worst-case vertices reservation policy when large amount of text (e.g. 1+ million character strings)
+  are being submitted in a single call. It would typically have crashed InputTextMultiline(). (#200)
+- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
+- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
+  for lazy/idle render mechanisms as new windows are typically not visible for one frame.
+- Metrics: Added io.MetricsRenderWindow to reflect the number of visible windows.
+- Metrics: Added io.MetricsActiveAllocations, moving away from the cross-context global counters than we previously used. (#1565, #1599, #586)
+- Demo: Added basic Drag and Drop demo. (#143)
+- Demo: Modified the Console example to use InsertChars() in the input text callback instead of poking directly into the buffer.
+  Although this won't make a difference in the example itself, using InsertChars() will honor the resizing callback properly. (#2006, #1443, #1008).
+- Demo: Clarified the use of IsItemHovered()/IsItemActive() right after being in the "Active, Focused, Hovered & Focused Tests" section.
+- Examples: Tweaked the main.cpp of each example.
+- Examples: Metal: Added Metal rendering backend. (#1929, #1873) [@warrenm]
+- Examples: OSX: Added early raw OSX platform backend. (#1873) [@pagghiu, @itamago, @ocornut]
+- Examples: Added mac OSX & iOS + Metal example in example_apple_metal/. (#1929, #1873) [@warrenm]
+- Examples: Added mac OSX + OpenGL2 example in example_apple_opengl2/. (#1873)
+- Examples: OpenGL3: Added shaders more versions of GLSL. (#1938, #1941, #1900, #1513, #1466, etc.) 
+- Examples: OpenGL3: Tweaked the imgui_impl_opengl3.cpp to work as-is with Emscripten + WebGL 2.0. (#1941). [@o-micron] 
+- Examples: OpenGL3: Made the example app default to GL 3.0 + GLSL 130 (instead of GL 3.2 + GLSL 150) unless on Mac.
+- Examples: OpenGL3: Added error output when shaders fail to compile/link.
+- Examples: OpenGL3: Added support for glew and glad OpenGL loaders out of the box. (#2001, #2002) [@jdumas]
+- Examples: OpenGL2: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications. (#1996)
+- Examples: DirectX10, DirectX11: Fixed unreleased resources in Init and Shutdown functions. (#1944)
+- Examples: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility. (#1989) [@matt77hias]
+- Examples: Vulkan: Fixed handling of VkSurfaceCapabilitiesKHR::maxImageCount = 0 case. Tweaked present mode selections. 
+- Examples: Win32, Glfw, SDL: Added support for the ImGuiMouseCursor_Hand cursor.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.62 (Released 2018-06-22)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen. The flag was already set by CollapsingHeader(). 
+  The only difference is if you were using TreeNodeEx() manually with ImGuiTreeNodeFlags_CollapsingHeader and without ImGuiTreeNodeFlags_NoTreePushOnOpen. 
+  In this case you can remove the ImGuiTreeNodeFlags_NoTreePushOnOpen flag from your call (ImGuiTreeNodeFlags_CollapsingHeader & ~ImGuiTreeNodeFlags_NoTreePushOnOpen). (#1864)
+  This also apply if you were using internal's TreeNodeBehavior() with the ImGuiTreeNodeFlags_CollapsingHeader flag directly.
+- ImFontAtlas: Renamed GetGlyphRangesChinese() to GetGlyphRangesChineseFull() to distinguish new smaller variants and discourage using the full set. (#1859)
+
+Other Changes:
+
+- Examples back-ends have been refactored to separate the platform code (e.g. Win32, Glfw, SDL2) from the renderer code (e.g. DirectX11, OpenGL3, Vulkan).
+  The "Platform" bindings are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, etc.
+  The "Renderer" bindings are in charge of: creating the main font texture, rendering imgui draw data.
+      before: imgui_impl_dx11.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+      before: imgui_impl_dx12.cpp        --> after: imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+      before: imgui_impl_glfw_gl3.cpp    --> after: imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_glfw_vulkan.cpp --> after: imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp
+      before: imgui_impl_sdl_gl3.cpp     --> after: imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp etc.
+  - The idea is what we can now easily combine and maintain back-ends and reduce code redundancy. Individual files are smaller and more reusable.
+    Integration of imgui into a new/custom engine may also be easier as there is less overlap between "windowing / inputs" and "rendering" code, 
+    so you may study or grab one half of the code and not the other.
+  - This change was motivated by the fact that adding support for the upcoming multi-viewport feature requires more work from the Platform and Renderer 
+    back-ends, and the amount of redundancy across files was becoming too difficult to maintain. If you use default back-ends, you'll benefit from an 
+    easy update path to support multi-viewports later (for future ImGui 1.7x).
+  - This is not strictly a breaking change if you keep your old bindings, but when you'll want to fully update your bindings, 
+    expect to have to reshuffle a few things. 
+  - Each example still has its own main.cpp which you may refer you to understand how to initialize and glue everything together.
+  - Some frameworks (such as the Allegro, Marmalade) handle both the "platform" and "rendering" part, and your custom engine may as well.
+  - Read examples/README.txt for details.
+- Added IsItemDeactivated() to query if the last item was active previously and isn't anymore. Useful for Undo/Redo patterns. (#820, #956, #1875)
+- Added IsItemDeactivatedAfterChange() [*EDIT* renamed to IsItemDeactivatedAfterEdit() in 1.63) if the last item was active previously, 
+  is not anymore, and during its active state modified a value. Note that you may still get false positive (e.g. drag value and while 
+  holding return on the same value). (#820, #956, #1875)
+- Nav: Added support for PageUp/PageDown (explorer-style: first aim at bottom/top most item, when scroll a page worth of contents). (#787)
+- Nav: To keep the navigated item in view we also attempt to scroll the parent window as well as the current window. (#787)
+- ColorEdit3, ColorEdit4, ColorButton: Added ImGuiColorEditFlags_NoDragDrop flag to disable ColorEditX as drag target and ColorButton as drag source. (#1826) 
+- BeginDragDropSource(): Offset tooltip position so it is off the mouse cursor, but also closer to it than regular tooltips, and not clamped by viewport. (#1739)
+- BeginDragDropTarget(): Added ImGuiDragDropFlags_AcceptNoPreviewTooltip flag to request hiding the drag source tooltip from the target site. (#143)
+- BeginCombo(), BeginMainMenuBar(), BeginChildFrame(): Temporary style modification are restored at the end of BeginXXX instead of EndXXX, to not affect tooltips and child windows.
+- Popup: Improved handling of (erroneously) repeating calls to OpenPopup() to not close the popup's child popups. (#1497, #1533, #1865).
+- InputTextMultiline(): Fixed double navigation highlight when scrollbar is active. (#787)
+- InputText(): Fixed Undo corruption after pasting large amount of text (Redo will still fail when undo buffers are exhausted, but text won't be corrupted).
+- SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
+- ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
+- ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+- Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
+- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
+- Examples: Win32: Fixed handling of mouse wheel messages to support sub-unit scrolling messages (typically sent by track-pads). (#1874) [@zx64]  
+- Examples: SDL+Vulkan: Added SDL+Vulkan example.
+- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag. Added clipboard support. 
+- Examples: Allegro5: Unindexing buffers ourselves as Allegro indexed drawing primitives are buggy in the DirectX9 back-end (will be fixed in Allegro 5.2.5+).
+- Examples: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from ImGui_ImplDX12_NewFrame() to ImGui_ImplDX12_RenderDrawData() which makes a lots more sense. (#301)
+- Examples: Vulkan: Reordered parameters ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings, a good occasion since we refactored the code. 
+- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
+- Examples: The functions in imgui_impl_xxx.cpp are prefixed with IMGUI_IMPL_API (which defaults to IMGUI_API) to facilitate some uses. (#1888)
+- Examples: Fixed bindings to use ImGuiMouseCursor_COUNT instead of old name ImGuiMouseCursor_Count_ so they can compile with IMGUI_DISABLE_OBSOLETE_FUNCTIONS. (#1887) 
+- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
+- Internals: PushItemFlag() flags are inherited by BeginChild().
+
+
+-----------------------------------------------------------------------
+ VERSION 1.61 (Released 2018-05-14)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally any more.
+  If you used DragInt() with custom format strings, make sure you change them to use %d or an integer-compatible format.
+  To honor backward-compatibility, the DragInt() code will currently parse and modify format strings to replace %*f with %d, giving time to users to upgrade their code.
+  If you have IMGUI_DISABLE_OBSOLETE_FUNCTIONS enabled, the code will instead assert! You may run a reg-exp search on your codebase for e.g. "DragInt.*%f" to you find them.
+- InputFloat(): Obsoleted InputFloat() functions taking an optional "int decimal_precision" in favor of an equivalent and more flexible "const char* format",
+  consistent with other functions. Kept redirection functions (will obsolete).
+- Misc: IM_DELETE() helper function added in 1.60 doesn't set the input pointer to NULL, more consistent with standard expectation and allows passing r-values.
+
+Other Changes:
+
+- Added DragScalar, DragScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added InputScalar, InputScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Added SliderScalar, SliderScalarN: supports signed/unsigned, 32/64 bits, float/double data types. (#643, #320, #708, #1011)
+- Window: Fixed pop-ups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.).
+- Window: Fixed windows using the ImGuiWindowFlags_NoSavedSettings flag from not using the same default position as other windows. (#1760)
+- Window: Relaxed the internal stack size checker to allow Push/Begin/Pop/.../End patterns to be used with PushStyleColor, PushStyleVar, PushFont without causing a false positive assert. (#1767)
+- Window: Fixed the default proportional item width lagging by one frame on resize.
+- Columns: Fixed a bug introduced in 1.51 where columns would affect the contents size of their container, often creating feedback loops when ImGuiWindowFlags_AlwaysAutoResize was used. (#1760)
+- Settings: Fixed saving an empty .ini file if CreateContext/DestroyContext are called without a single call to NewFrame(). (#1741)
+- Settings: Added LoadIniSettingsFromDisk(), LoadIniSettingsFromMemory(), SaveIniSettingsToDisk(), SaveIniSettingsToMemory() to manually load/save .ini settings. (#923, #993)
+- Settings: Added io.WantSaveIniSettings flag, which is set to notify the application that e.g. SaveIniSettingsToMemory() should be called. (#923, #993)
+- Scrolling: Fixed a case where using SetScrollHere(1.0f) at the bottom of a window on the same frame the window height has been growing would have the scroll clamped using the previous height. (#1804)
+- MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
+- InputText: On Mac OS X, filter out characters when the CMD modifier is held. (#1747) [@sivu]
+- InputText: On Mac OS X, support CMD+SHIFT+Z for Redo. CMD+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with ESC and the current buffer matches the initial value.
+- InputFloat,InputFloat2,InputFloat3,InputFloat4: Added variations taking a more flexible and consistent optional "const char* format" parameter instead of "int decimal_precision".
+  This allow using custom formats to display values in scientific notation, and is generally more consistent with other API. Obsoleted functions using the optional "int decimal_precision" parameter. (#648)
+- DragFloat, DragInt: Cancel mouse tweak when current value is initially past the min/max boundaries and mouse is pushing in the same direction (keyboard/gamepad version already did this).
+- DragFloat, DragInt: Honor natural type limits (e.g. INT_MAX, FLT_MAX) instead of wrapping around. (#708, #320)
+- DragFloat, SliderFloat: Fixes to allow input of scientific notation numbers when using CTRL+Click to input the value. (~#648, #1011)
+- DragFloat, SliderFloat: Rounding-on-write uses the provided format string instead of parsing the precision from the string, which allows for finer uses of %e %g etc. (#648, #642)
+- DragFloat: Improved computation when using the power curve. Improved lost of input precision with very small steps. Added an assert than power-curve requires a min/max range. (~#642)
+- DragFloat: The 'power' parameter is only honored if the min/max parameter are also setup.
+- DragInt, SliderInt: Fixed handling of large integers (we previously passed data around internally as float, which reduced the range of valid integers).
+- ColorEdit: Fixed not being able to pass the ImGuiColorEditFlags_NoAlpha or ImGuiColorEditFlags_HDR flags to SetColorEditOptions().
+- Nav: Fixed hovering a Selectable() with the mouse so that it update the navigation cursor (as it happened in the pre-1.60 navigation branch). (#787)
+- Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
+- Fonts: When building font atlas, glyphs that are missing in the fonts are not using the glyph slot to render a dummy/default glyph. Saves space and allow merging fonts with
+  overlapping font ranges such as FontAwesome5 which split out the Brands separately from the Solid fonts. (#1703, #1671)
+- Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
+- Misc: Added IMGUI_DISABLE_MATH_FUNCTIONS in imconfig.h to make it easier to redefine wrappers for std/crt math functions.
+- Misc: Fix to allow compiling in unity builds where stb_rectpack/stb_truetype may be already included in the same compilation unit.
+- Demo: Simple Overlay: Added a context menu item to enable freely moving the window.
+- Demo: Added demo for DragScalar(), InputScalar(), SliderScalar(). (#643)
+- Examples: Calling IMGUI_CHECKVERSION() in the main.cpp of every example application.
+- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unnecessary conversion (Allegro 5 doesn't support 16-bit indices).
+- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+- Examples: DirectX 9: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. (#1790, #1687) [@sr-tream]
+- Examples: SDL: Fixed clipboard paste memory leak in the SDL binding code. (#1803) [@eliasdaler]
+- Various minor fixes, tweaks, refactoring, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.60 (Released 2018-04-07)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.60
+
+The gamepad/keyboard navigation branch (which has been in the work since July 2016) has been merged.
+Gamepad/keyboard navigation is still marked as Beta and has to be enabled explicitly.
+Various internal refactoring have also been done, as part of the navigation work and as part of the upcoming viewport/docking work.
+
+Breaking Changes:
+
+- Obsoleted the io.RenderDrawListsFn callback, you can call your graphics engine render function after ImGui::Render().
+  e.g. with example backends, call ImDrawData* draw_data = ImGui::GetDrawData(); ImGui_ImplXXXX_RenderDrawData(draw_data).
+- Reorganized context handling to be more explicit: (#1599)
+  - YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
+  - removed Shutdown() function, as DestroyContext() serve this purpose. If you are using an old backend from the examples/ folder, remove the line that calls Shutdown().
+  - you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwise CreateContext() will create its own font atlas instance.
+  - removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
+  - removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts.
+- Renamed ImGuiStyleVar_Count_ to ImGuiStyleVar_COUNT and ImGuiMouseCursor_Count_ to ImGuiMouseCursor_COUNT for consistency with other public enums.
+- Fonts: Moved sample TTF files from extra_fonts/ to misc/fonts/. If you loaded files directly from the imgui repo you may need to update your paths.
+- Fonts: changed ImFont::DisplayOffset.y to defaults to 0 instead of +1. Fixed vertical rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- BeginDragDropSource(): temporarily removed the optional mouse_button=0 parameter because it is not really usable in many situations at the moment.
+- Obsoleted IsAnyWindowHovered() in favor of IsWindowHovered(ImGuiHoveredFlags_AnyWindow). Kept redirection function (will obsolete).
+- Obsoleted IsAnyWindowFocused() in favor of IsWindowFocused(ImGuiFocusedFlags_AnyWindow). Kept redirection function (will obsolete).
+- Renamed io.WantMoveMouse to io.WantSetMousePos for consistency and ease of understanding (was added in 1.52, not used by core, and honored by some binding ahead of merging the Nav branch).
+- Removed ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered style colors as the closing cross uses regular button colors now.
+- Renamed ImGuiSizeConstraintCallback to ImGuiSizeCallback, ImGuiSizeConstraintCallbackData to ImGuiSizeCallbackData.
+- Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it should be easy to replicate on your side (you can find the code in 1.53).
+
+Other Changes:
+
+- Doc: Added a Changelog file in the repository to ease comparing versions (it goes back to dear imgui 1.48), until now it was only on GitHub.
+- Navigation: merged in the gamepad/keyboard navigation (about a million changes!). (#787, #323)
+  The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
+- To use Gamepad Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable.
+  - Backend: Set io.BackendFlags |= ImGuiBackendFlags_HasGamepad + fill the io.NavInputs[] fields before calling NewFrame(). Read imgui.cpp for more details.
+  - See https://github.com/ocornut/imgui/issues/1599 for recommended gamepad mapping or download PNG/PSD at http://goo.gl/9LgVZW
+  - See 'enum ImGuiNavInput_' in imgui.h for a description of inputs. Read imgui.cpp for more details.
+- To use Keyboard Navigation:
+  - Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.	
+  - Basic controls: arrows to navigate, Alt to enter menus, Space to activate item, Enter to edit text, Escape to cancel/close, Ctrl-Tab to focus windows, etc.
+  - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard), the io.WantCaptureKeyboard flag will be set.
+    For more advanced uses, you may want to read from io.NavActive or io.NavVisible. Read imgui.cpp for more details.
+- Navigation: SetItemDefaultFocus() sets the navigation position in addition to scrolling. (#787)
+- Navigation: Added IsItemFocused(), added IsAnyItemFocused(). (#787)
+- Navigation: Added window flags: ImGuiWindowFlags_NoNav (== ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus).
+- Navigation: Style: Added ImGuiCol_NavHighlight, ImGuiCol_NavWindowingHighlight colors. (#787)
+- Navigation: TreeNode: Added ImGuiTreeNodeFlags_NavLeftJumpsBackHere flag to allow Nav Left direction to jump back to parent tree node from any of its child. (#1079)
+- Navigation: IO: Added io.ConfigFlags (input), io.NavActive (output), io.NavVisible (output). (#787)
+- Context: Removed the default global context and font atlas instances, which caused various problems to users of multiple contexts and DLL users. (#1565, #1599)
+  YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END. Existing apps will assert/crash without it.
+- Context: Added SetAllocatorFunctions() to rewire memory allocators (as a replacement to previous parameters to CreateContext()). Allocators are shared by all contexts and imgui helpers. (#1565, #586, #992, #1007, #1558)
+- Context: You may pass a ImFontAtlas to CreateContext() to specify a font atlas to share. Shared font atlas are not owned by the context and not destroyed along with it. (#1599)
+- Context: Added IMGUI_DISABLE_DEFAULT_ALLOCATORS to disable linking with malloc/free. (#1565, #586, #992, #1007, #1558)
+- IO: Added io.ConfigFlags for user application to store settings for imgui and for the backend:
+  - ImGuiConfigFlags_NavEnableKeyboard: Enable keyboard navigation.
+  - ImGuiConfigFlags_NavEnableGamepad: Enable gamepad navigation (provided ImGuiBackendFlags_HasGamepad is also set by backend).
+  - ImGuiConfigFlags_NavEnableSetMousePos: Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a virtual mouse is awkward.
+  - ImGuiConfigFlags_NoMouseCursorChange: Instruct backend to not alter mouse cursor shape and visibility (by default the example backend use mouse cursor API of the platform when available)
+  - ImGuiConfigFlags_NoMouse: Instruct imgui to clear mouse position/buttons in NewFrame(). This allows ignoring the mouse information passed by the backend.
+  - ImGuiConfigFlags_IsSRGB, ImGuiConfigFlags_IsTouchScreen: Flags for general application use.
+- IO: Added io.BackendFlags for backend to store its capabilities (currently: _HasGamepad, _HasMouseCursors, _HasSetMousePos). This will be used more in the next version.
+- IO: Added ImGuiKey_Insert, ImGuiKey_Space keys. Setup in all example bindings. (#1541)
+- IO: Added Horizontal Mouse Wheel support for horizontal scrolling. (#1463) [@tseeker]
+- IO: Added IsAnyMouseDown() helper which is helpful for bindings to handle mouse capturing.
+- Window: Clicking on a window with the ImGuiWIndowFlags_NoMove flags takes an ActiveId so we can't hover something else when dragging afterwards. (#1381, #1337)
+- Window: IsWindowHovered(): Added ImGuiHoveredFlags_AnyWindow, ImGuiFocusedFlags_AnyWindow flags (See Breaking Changes). Added to demo. (#1382)
+- Window: Added SetNextWindowBgAlpha() helper. Particularly helpful since the legacy 5-parameters version of Begin() has been marked as obsolete in 1.53. (#1567)
+- Window: Fixed SetNextWindowContentSize() with 0.0f on Y axis (or SetNextWindowContentWidth()) overwriting the contents size. Got broken on Dec 10 (1.53). (#1363)
+- ArrowButton: Added ArrowButton() given a cardinal direction (e.g. ImGuiDir_Left).
+- InputText: Added alternative clipboard shortcuts: Shift+Delete (cut), CTRL+Insert (copy), Shift+Insert (paste). (#1541)
+- InputText: Fixed losing Cursor X position when clicking outside on an item that's submitted after the InputText(). It was only noticeable when restoring focus programmatically. (#1418, #1554)
+- InputText: Added ImGuiInputTextFlags_CharsScientific flag to also allow 'e'/'E' for input of values using scientific notation. Automatically used by InputFloat.
+- Style: Default style is now StyleColorsDark(), instead of the old StyleColorsClassic(). (#707)
+- Style: Enable window border by default. (#707)
+- Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)
+- Style: Added style.MouseCursorScale help when using the software mouse cursor facility. (#939).
+- Style: Close button nows display a cross before hovering. Fixed cross positioning being a little off. Uses button colors for highlight when hovering. (#707)
+- Popup: OpenPopup() Always reopen existing pop-ups. (Removed imgui_internal.h's OpenPopupEx() which was used for this.) (#1497, #1533).
+- Popup: BeginPopupContextItem(), BeginPopupContextWindow(), BeginPopupContextVoid(), OpenPopupOnItemClick() all react on mouse release instead of mouse press. (~#439)
+- Popup: Better handling of user mistakenly calling OpenPopup() every frame (with reopen_existing option). The error will now be more visible and easier to understand. (#1497)
+- Popup: BeginPopup(): Exposed extra_flags parameter that are passed through to Begin(). (#1533)
+- Popup: BeginPopupModal: fixed the conditional test for SetNextWindowPos() which was polling the wrong window, which in practice made the test succeed all the time.
+- Tooltip: BeginTooltip() sets ImGuiWindowFlags_NoInputs flag.
+- Scrollbar: Fixed ScrollbarY enable test after ScrollbarX has been enabled being a little off (small regression from Nov 2017). (#1574)
+- Scrollbar: Fixed ScrollbarX enable test subtracting WindowPadding.x (this has been there since the addition of horizontal scroll bar!).
+- Columns: Clear offsets data when columns count changed. (#1525)
+- Columns: Fixed a memory leak of ImGuiColumnsSet's Columns vector. (#1529) [@unprompted]
+- Columns: Fixed resizing a window very small breaking some columns positioning (broken in 1.53).
+- Columns: The available column extent takes consideration of the right-most clipped pixel, so the right-most column may look a little wider but will contain the same amount of visible contents.
+- MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).
+- TreeNode: nodes with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)
+- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
+- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
+- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
+- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
+- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
+- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
+- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.
+- Combo: Arrow button isn't displayed over frame background so its blended color matches other buttons. Left side of the button isn't rounded.
+- PlotLines: plot a flat line if scale_min==scale_max. (#1621)
+- Fonts: Changed DisplayOffset.y to defaults to 0 instead of +1. Fixed rounding of Ascent/Descent to match TrueType renderer.
+  If you were adding or subtracting (not assigning) to ImFont::DisplayOffset check if your fonts are correctly aligned vertically. (#1619)
+- Fonts: Updated stb_truetype from 1.14 to stb_truetype 1.19. (w/ include fix from some platforms #1622)
+- Fonts: Added optional FreeType rasterizer in misc/freetype. Moved from imgui_club repo. (#618) [@Vuhdo, @mikesart, @ocornut]
+- Fonts: Moved extra_fonts/ to misc/fonts/.
+- ImFontAtlas: Fixed cfg.MergeMode not reusing existing glyphs if available (always overwrote).
+- ImFontAtlas: Handle stb_truetype stbtt_InitFont() and stbtt_PackBegin() possible failures more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)
+- ImFontAtlas: Moved mouse cursor data out of ImGuiContext, fix drawing them with multiple contexts. Also remove the last remaining undesirable dependency on ImGui in imgui_draw.cpp. (#939)
+- ImFontAtlas: Added ImFontAtlasFlags_NoPowerOfTwoHeight flag to disable padding font height to nearest power of two. (#1613)
+- ImFontAtlas: Added ImFontAtlasFlags_NoMouseCursors flag to disable baking software mouse cursors, mostly to save texture memory on very low end hardware. (#1613)
+- ImDrawList: Fixed AddRect() with anti-aliasing disabled (lower-right corner pixel was often missing, rounding looks a little better.) (#1646)
+- ImDrawList: Added CloneOutput() helper to facilitate the cloning of ImDrawData or ImDrawList for multi-threaded rendering.
+- Misc: Functions passed to libc qsort are explicitly marked cdecl to support compiling with vectorcall as the default calling convention. (#1230, #1611) [@RandyGaul]
+- Misc: ImVec2: added [] operator. This is becoming desirable for some code working of either axes independently. Better adding it sooner than later.
+- Misc: NewFrame(): Added an assert to detect incorrect filling of the io.KeyMap[] array earlier. (#1555)
+- Misc: Added IM_OFFSETOF() helper in imgui.h (previously was in imgui_internal.h)
+- Misc: Added IM_NEW(), IM_DELETE() helpers in imgui.h (previously were in imgui_internal.h)
+- Misc: Added obsolete redirection function GetItemsLineHeightWithSpacing() (which redirects to GetFrameHeightWithSpacing()), as intended and stated in docs of 1.53.
+- Misc: Added misc/natvis/imgui.natvis for visual studio debugger users to easily visualize imgui internal types. Added to examples projects.
+- Misc: Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)
+- Misc: Added IMGUI_STB_TRUETYPE_FILENAME and IMGUI_STB_RECT_PACK_FILENAME compile time directives to use another version of the stb_ files.
+- Misc: Updated stb_rect_pack from 0.10 to 0.11 (minor changes).
+  (Those flags are not used by ImGui itself, they only exists to make it easy for the engine/backend to pass information to the application in a standard manner.)
+- Metrics: Added display of Columns state.
+- Demo: Improved Selectable() examples. (#1528)
+- Demo: Tweaked the Child demos, added a menu bar to the second child to test some navigation functions.
+- Demo: Console: Using ImGuiCol_Text to be more friendly to color changes.
+- Demo: Using IM_COL32() instead of ImColor() in ImDrawList centric contexts. Trying to phase out use of the ImColor helper whenever possible.
+- Examples: Files in examples/ now include their own changelog so it is easier to occasionally update your bindings if needed.
+- Examples: Using Dark theme by default. (#707). Tweaked demo code.
+- Examples: Added support for horizontal mouse wheel for API that allows it. (#1463) [@tseeker]
+- Examples: All examples now setup the io.BackendFlags to signify they can honor mouse cursors, gamepad, etc.
+- Examples: DirectX10: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) in every other backends. (#1733)
+- Examples: DirectX12: Added DirectX 12 example. (#301) [@jdm3]
+- Examples: OpenGL3+GLFW,SDL: Changed GLSL shader version from 330 to 150. (#1466, #1504)
+- Examples: OpenGL3+GLFW,SDL: Added a way to override the GLSL version string in the Init function. (#1466, #1504).
+- Examples: OpenGL3+GLFW,SDL: Creating VAO in the render function so it can be more easily used by multiple shared OpenGL contexts. (#1217)
+- Examples: OpenGL3+GLFW: Using 3.2 context instead of 3.3. (#1466)
+- Examples: OpenGL: Setting up glPixelStorei() explicitly before uploading texture.
+- Examples: OpenGL: Calls to glPolygonMode() are casting parameters as GLEnum to not fail with more strict bindings. (#1628) [@ilia-glushchenko]
+- Examples: Win32 (DirectX9,10,11,12): Added support for mouse cursor shapes. (#1495)
+- Examples: Win32 (DirectX9,10,11,12: Support for windows using the CS_DBLCLKS class flag by handling the double-click messages (WM_LBUTTONDBLCLK etc.). (#1538, #754) [@ndandoulakis]
+- Examples: Win32 (DirectX9,10,11,12): Made the Win32 proc handlers not assert if there is no active context yet, to be more flexible with creation order. (#1565)
+- Examples: GLFW: Added support for mouse cursor shapes (the diagonal resize cursors are unfortunately not supported by GLFW at the moment. (#1495)
+- Examples: GLFW: Don't attempt to change the mouse cursor input mode if it is set to GLFW_CURSOR_DISABLED by the application. (#1202) [@PhilCK]
+- Examples: SDL: Added support for mouse cursor shapes. (#1626) [@olls]
+- Examples: SDL: Using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging (SDL 2.0.4+ only, otherwise using SDL_WINDOW_INPUT_FOCUS instead of previously SDL_WINDOW_MOUSE_FOCUS). (#1559)
+- Examples: SDL: Enabled vsync by default so people don't come at us when the examples are running at 2000 FPS and burning a CPU core.
+- Examples: SDL: Using SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency() to handle frame-rate over 1000 FPS properly. (#996)
+- Examples: SDL: Using scan-code exclusively instead of a confusing mixture of scan-codes and key-codes.
+- Examples: SDL: Visual Studio: Added .vcxproj file. Using %SDL2_DIR% in the default .vcxproj and build files instead of %SDL_DIR%, the earlier being more standard.
+- Examples: Vulkan: Visual Studio: Added .vcxproj file.
+- Examples: Apple: Fixed filenames in OSX xcode project. Various other Mac friendly fixes. [@gerryhernandez etc.]
+- Examples: Visual Studio: Disabled extraneous function-level check in Release build.
+- Various fixes, tweaks, internal refactoring, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.53 (Released 2017-12-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.53
+
+Breaking Changes:
+
+- Renamed the emblematic `ShowTestWindow()` function to `ShowDemoWindow()`. Kept redirection function (will obsolete).
+- Renamed `GetItemsLineHeightWithSpacing()` to `GetFrameHeightWithSpacing()` for consistency. Kept redirection function (will obsolete).
+- Renamed `ImGuiTreeNodeFlags_AllowOverlapMode` flag to `ImGuiTreeNodeFlags_AllowItemOverlap`. Kept redirection enum (will obsolete).
+- Obsoleted `IsRootWindowFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootWindow)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildFocused()` in favor of using `IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `IsRootWindowOrAnyChildHovered()` in favor of using `IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)`. Kept redirection function (will obsolete). (#1382)
+- Obsoleted `SetNextWindowContentWidth() in favor of using `SetNextWindowContentSize()`. Kept redirection function (will obsolete).
+- Renamed `ImGuiTextBuffer::append()` helper to `appendf()`, and `appendv()` to `appendfv()` for consistency. If you copied the 'Log' demo in your code, it uses appendv() so that needs to be renamed.
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of `ImDrawList::AddPolyline()` and `ImDrawList::AddConvexPolyFilled()`. Prefer manipulating ImDrawList::Flags if you need to toggle them during the frame.
+- Style, ImDrawList: Renamed `style.AntiAliasedShapes` to `style.AntiAliasedFill` for consistency and as a way to explicitly break code that manipulate those flag at runtime. You can now manipulate ImDrawList::Flags.
+- Style, Begin: Removed `ImGuiWindowFlags_ShowBorders` window flag. Borders are now fully set up in the ImGuiStyle structure (see e.g. `style.FrameBorderSize`, `style.WindowBorderSize`, `style.PopupBorderSize`).
+  Use `ImGui::ShowStyleEditor()` to look them up.
+  Please note that the style system will keep evolving (hopefully stabilizing in Q1 2018), and so custom styles will probably subtly break over time.
+  It is recommended that you use the `StyleColorsClassic()`, `StyleColorsDark()`, `StyleColorsLight()` functions. Also see `ShowStyleSelector()`.
+- Style: Removed `ImGuiCol_ComboBg` in favor of combo boxes using `ImGuiCol_PopupBg` for consistency. Combo are normal pop-ups.
+- Style: Renamed `ImGuiCol_ChildWindowBg` to `ImGuiCol_ChildBg`.
+- Style: Renamed `style.ChildWindowRounding` to `style.ChildRounding`, `ImGuiStyleVar_ChildWindowRounding` to `ImGuiStyleVar_ChildRounding`.
+- Removed obsolete redirection functions: SetScrollPosHere() - marked obsolete in v1.42, July 2015.
+- Removed obsolete redirection functions: GetWindowFont(), GetWindowFontSize() - marked obsolete in v1.48, March 2016.
+
+Other Changes:
+
+- Added `io.OptCursorBlink` option to allow disabling cursor blinking. (#1427) [renamed to io.ConfigCursorBlink in 1.63]
+- Added `GetOverlayDrawList()` helper to quickly get access to a ImDrawList that will be rendered in front of every windows.
+- Added `GetFrameHeight()` helper which returns `(FontSize + style.FramePadding.y * 2)`.
+- Drag and Drop: Added Beta API to easily use drag and drop patterns between imgui widgets.
+  - Setup a source on a widget with `BeginDragDropSource()`, `SetDragDropPayload()`, `EndDragDropSource()` functions.
+  - Receive data with `BeginDragDropTarget()`, `AcceptDragDropPayload()`, `EndDragDropTarget()`.
+  - See ImGuiDragDropFlags for various options.
+  - The ColorEdit4() and ColorButton() widgets now support Drag and Drop.
+  - The API is tagged as Beta as it still may be subject to small changes.
+- Drag and Drop: When drag and drop is active, tree nodes and collapsing header can be opened by hovering on them for 0.7 seconds.
+- Renamed io.OSXBehaviors to io.OptMacOSXBehaviors. Should not affect users as the compile-time default is usually enough. (#473, #650)
+- Style: Added StyleColorsDark() style. (#707) [@dougbinks]
+- Style: Added StyleColorsLight() style. Best used with frame borders + thicker font than the default font. (#707)
+- Style: Added style.PopupRounding setting. (#1112)
+- Style: Added style.FrameBorderSize, style.WindowBorderSize, style.PopupBorderSize. Removed ImGuiWindowFlags_ShowBorders window flag!
+  Borders are now fully set up in the ImGuiStyle structure. Use ImGui::ShowStyleEditor() to look them up. (#707, fix #819, #1031)
+- Style: Various small changes to the classic style (most noticeably, buttons are now using blue shades). (#707)
+- Style: Renamed ImGuiCol_ChildWindowBg to ImGuiCol_ChildBg.
+- Style: Renamed style.ChildWindowRounding to style.ChildRounding, ImGuiStyleVar_ChildWindowRounding to ImGuiStyleVar_ChildRounding.
+- Style: Removed ImGuiCol_ComboBg in favor of combo boxes using ImGuiCol_PopupBg for consistency. (#707)
+- Style: Made the ScaleAllSizes() helper rounds down every values so they are aligned on integers.
+- Focus: Added SetItemDefaultFocus(), which in the current (master) branch behave the same as doing `if (IsWindowAppearing()) SetScrollHere()`.
+  In the navigation branch this will also set the default focus. Prefer using this when creating combo boxes with `BeginCombo()` so your code will be forward-compatible with gamepad/keyboard navigation features. (#787)
+- Combo: Pop-up grows horizontally to accommodate for contents that is larger then the parent combo button.
+- Combo: Added BeginCombo()/EndCombo() API which allows use to submit content of any form and manage your selection state without relying on indices.
+- Combo: Added ImGuiComboFlags_PopupAlignLeft flag to BeginCombo() to prioritize keeping the pop-up on the left side (for small-button-looking combos).
+- Combo: Added ImGuiComboFlags_HeightSmall, ImGuiComboFlags_HeightLarge, ImGuiComboFlags_HeightLargest to easily provide desired pop-up height.
+- Combo: You can use SetNextWindowSizeConstraints() before BeginCombo() to specify specific pop-up width/height constraints.
+- Combo: Offset popup position by border size so that a double border isn't so visible. (#707)
+- Combo: Recycling windows by using a stack number instead of a unique id, wasting less memory (like menus do).
+- InputText: Added ImGuiInputTextFlags_NoUndoRedo flag. (#1506, #1508) [@ibachar]
+- Window: Fixed auto-resize allocating too much space for scrollbar when SizeContents is bigger than maximum window size (fixes c0547d3). (#1417)
+- Window: Child windows with MenuBar use regular WindowPadding.y so layout look consistent as child or as a regular window.
+- Window: Begin(): Fixed appending into a child window with a second Begin() from a different window stack querying the wrong window for the window->Collapsed test.
+- Window: Calling IsItemActive(), IsItemHovered() etc. after a call to Begin() provides item data for the title bar, so you can easily test if the title bar is being hovered, etc. (#823)
+- Window: Made it possible to use SetNextWindowPos() on a child window.
+- Window: Fixed a one frame glitch. When an appearing window claimed the focus themselves, the title bar wouldn't use the focused color for one frame.
+- Window: Added ImGuiWindowFlags_ResizeFromAnySide flag to resize from any borders or from the lower-left corner of a window. This requires your backend to honor GetMouseCursor() requests for full usability. (#822)
+- Window: Sizing fixes when using SetNextWindowSize() on individual axises.
+- Window: Hide new window for one frame until they calculate their size. Also fixes SetNextWindowPos() given a non-zero pivot. (#1694)
+- Window: Made mouse wheel scrolling accommodate better to windows that are smaller than the scroll step.
+- Window: SetNextWindowContentSize() adjust for the size of decorations (title bar/menu bar), but _not_ for borders are we consistently make borders not affect layout.
+  If you need a non-child window of an exact size with border enabled but zero window padding, you'll need to accommodate for the border size yourself.
+- Window: Using the ImGuiWindowFlags_NoScrollWithMouse flag on a child window forwards the mouse wheel event to the parent window, unless either ImGuiWindowFlags_NoInputs or ImGuiWindowFlags_NoScrollbar are also set. (#1380, #1502)
+- Window: Active Modal window always set the WantCaptureKeyboard flag. (#744)
+- Window: Moving window doesn't use accumulating MouseDelta so straying out of imgui boundaries keeps moved imgui window at the same cursor-relative position.
+- Window: BeginChild() which an explicit name doesn't include the hash within the internal window name. (#1698)
+- IsWindowFocused(): Added ImGuiFocusedFlags_ChildWindows flag to include child windows in the focused test. (#1382).
+- IsWindowFocused(): Added ImGuiFocusedFlags_RootWindow flag to start focused test from the root (top-most) window. Obsolete IsRootWindowFocused(). (#1382)
+- IsWindowHovered(): Added ImGuiHoveredFlags_ChildWindows flag to include child windows in the hovered test. (#1382).
+- IsWindowHovered(): Added ImGuiHoveredFlags_RootWindow flag to start hovered test from the root (top-most) window. The combination of both flags obsoletes IsRootWindowOrAnyChildHovered(). (#1382)
+- IsWindowHovered(): Fixed return value when an item is active to use the same logic as IsItemHovered(). (#1382, #1404)
+- IsWindowHovered(): Always return true when current window is being moved. (#1382)
+- Scrollbar: Fixed issues with vertical scrollbar flickering/appearing, typically when manually resizing and using a pattern of filling available height (e.g. full sized BeginChild).
+- Scrollbar: Minor graphical fix for when scrollbar don't have enough visible space to display the full grab.
+- Scrolling: Fixed padding and scrolling asymmetry where lower/right sides of a window wouldn't use WindowPadding properly + causing minor scrolling glitches.
+- Tree: TreePush with zero arguments was ambiguous. Resolved by making it call TreePush(const void*). [@JasonWilkins]
+- Tree: Renamed ImGuiTreeNodeFlags_AllowOverlapMode to ImGuiTreeNodeFlags_AllowItemOverlap. (#600, #1330)
+- MenuBar: Fixed minor rendering issues on the right size when resizing a window very small and using rounded window corners.
+- MenuBar: better software clipping to handle small windows, in particular child window don't have minimum constraints so we need to render clipped menus better.
+- BeginMenu(): Tweaked the Arrow/Triangle displayed on child menu items.
+- Columns: Clipping columns borders on Y axis on CPU because some Linux GPU drivers appears to be unhappy with triangle spanning large regions. (#125)
+- Columns: Added ImGuiColumnsFlags_GrowParentContentsSize to internal API to restore old content sizes behavior (may be obsolete). (#1444, #125)
+- Columns: Columns width is no longer lost when dragging a column to the right side of the window, until releasing the mouse button you have a chance to save them. (#1499, #125). [@ggtucker]
+- Columns: Fixed dragging when using a same of columns multiple times in the frame. (#125)
+- Indent(), Unindent(): Allow passing negative values.
+- ColorEdit4(): Made IsItemActive() return true when picker pop-up is active. (#1489)
+- ColorEdit4(): Tweaked tooltip so that the color button aligns more correctly with text.
+- ColorEdit4(): Support drag and drop. Color buttons can be used as drag sources, and ColorEdit widgets as drag targets. (#143)
+- ColorPicker4(): Fixed continuously returning true when holding mouse button on the sat/value/alpha locations. We only return true on value change. (#1489)
+- NewFrame(): using literal strings in the most-frequently firing IM_ASSERT expressions to increase the odd of programmers seeing them (especially those who don't use a debugger).
+- NewFrame() now asserts if neither Render or EndFrame have been called. Exposed EndFrame(). Made it legal to call EndFrame() more than one. (#1423)
+- ImGuiStorage: Added BuildSortByKey() helper to rebuild storage from scratch.
+- ImFont: Added GetDebugName() helper.
+- ImFontAtlas: Added missing Thai punctuation in the GetGlyphRangesThai() ranges. (#1396) [@nProtect]
+- ImDrawList: Removed 'bool anti_aliased = true' final parameter of ImDrawList::AddPolyline() and ImDrawList::AddConvexPolyFilled(). Anti-aliasing is controlled via the regular style.AntiAliased flags.
+- ImDrawList: Added ImDrawList::AddImageRounded() helper. (#845) [@thedmd]
+- ImDrawList: Refactored to make ImDrawList independent of ImGui. Removed static variable in PathArcToFast() which caused linking issues to some.
+- ImDrawList: Exposed ImDrawCornerFlags, replaced occurrences of ~0 with an explicit ImDrawCornerFlags_All. NB: Inversed BotLeft (prev 1<<3, now 1<<2) and BotRight (prev 1<<2, now 1<<3).
+- ImVector: Added ImVector::push_front() helper.
+- ImVector: Added ImVector::contains() helper.
+- ImVector: insert() uses grow_capacity() instead of using grow policy inconsistent with push_back().
+- Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW to use the IM_PLACEMENT_NEW macro. (#1103)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_NoHoldingActiveID flag from incorrectly setting the ActiveIdClickOffset field.
+  This had no known effect within imgui code but could have affected custom drag and drop patterns. And it is more correct this way! (#1418)
+- Internals: ButtonBehavior: Fixed ImGuiButtonFlags_AllowOverlapMode to avoid temporarily activating widgets on click before they have been correctly double-hovered. (#319, #600)
+- Internals: Added SplitterBehavior() helper. (#319)
+- Internals: Added IM_NEW(), IM_DELETE() helpers. (#484, #504, #1517)
+- Internals: Basic refactor of the settings API which now allows external elements to be loaded/saved.
+- Demo: Added ShowFontSelector() showing loaded fonts.
+- Demo: Added ShowStyleSelector() to select among default styles. (#707)
+- Demo: Renamed the emblematic ShowTestWindow() function to ShowDemoWindow().
+- Demo: Style Editor: Added a "Simplified settings" sections with check-boxes for border size and frame rounding. (#707, #1019)
+- Demo: Style Editor: Added combo box to select stock styles and select current font when multiple are loaded. (#707)
+- Demo: Style Editor: Using local storage so Save/Revert button makes more sense without code passing its storage. Added horizontal scroll bar. Fixed Save/Revert button to be always accessible. (#1211)
+- Demo: Console: Fixed context menu issue. (#1404)
+- Demo: Console: Fixed incorrect positioning which was hidden by a minor scroll issue (this would affect people who copied the Console code as is).
+- Demo: Constrained Resize: Added more test cases. (#1417)
+- Demo: Custom Rendering: Fixed clipping rectangle extruding out of parent window.
+- Demo: Layout: Removed unnecessary and misleading BeginChild/EndChild calls.
+- Demo: The "Color Picker with Palette" demo supports drag and drop. (#143)
+- Demo: Display better mouse cursor info for debugging backends.
+- Demo: Stopped using rand() function in demo code.
+- Examples: Added a handful of extra comments (about fonts, third-party libraries used in the examples, etc.).
+- Examples: DirectX9: Handle loss of D3D9 device (D3DERR_DEVICELOST). (#1464)
+- Examples: Added null_example/ which is helpful for quick testing on multiple compilers/settings without relying on graphics library.
+- Fix for using alloca() in "Clang with Microsoft Codechain" mode.
+- Various fixes, optimizations, comments.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.52 (2017-10-27)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.52
+
+Breaking Changes:
+
+- IO: `io.MousePos` needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing, instead of ImVec2(-1,-1) as previously) This is needed so we can clear `io.MouseDelta` field when the mouse is made available again.
+- Renamed `AlignFirstTextHeightToWidgets()` to `AlignTextToFramePadding()`. Kept inline redirection function (will obsolete).
+- Obsoleted the legacy 5 parameters version of Begin(). Please avoid using it. If you need a transparent window background, uses `PushStyleColor()`. The old size parameter there was also misleading and equivalent to calling `SetNextWindowSize(size, ImGuiCond_FirstTimeEver)`. Kept inline redirection function (will obsolete).
+- Obsoleted `IsItemHoveredRect()`, `IsMouseHoveringWindow()` in favor of using the newly introduced flags of `IsItemHovered()` and `IsWindowHovered()`. Kept inline redirection function (will obsolete). (#1382)
+- Obsoleted 'SetNextWindowPosCenter()' in favor of using 1SetNextWindowPos()` with a pivot value which allows to do the same and more. Keep inline redirection function.
+- Removed `IsItemRectHovered()`, `IsWindowRectHovered()` recently introduced in 1.51 which were merely the more consistent/correct names for the above functions which are now obsolete anyway. (#1382)
+- Changed `IsWindowHovered()` default parameters behavior to return false if an item is active in another window (e.g. click-dragging item from another window to this window). You can use the newly introduced IsWindowHovered() flags to requests this specific behavior if you need it. (#1382)
+- Renamed imconfig.h's `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS` to `IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS`/`IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS` for consistency.
+
+Other Changes:
+
+- ProgressBar: fixed rendering when straddling rounded area. (#1296)
+- SliderFloat, DragFloat: Using scientific notation e.g. "%.1e" in the displayed format string doesn't mistakenly trigger rounding of the value. [@MomentsInGraphics]
+- Combo, InputFloat, InputInt: Made the small button on the right side align properly with the equivalent colored button of ColorEdit4().
+- IO: Tweaked logic for `io.WantCaptureMouse` so it now outputs false when e.g. hovering over void while an InputText() is active. (#621) [@pdoane]
+- IO: Fixed `io.WantTextInput` from mistakenly outputting true when an activated Drag or Slider was previously turned into an InputText(). (#1317)
+- Misc: Added flags to `IsItemHovered()`, `IsWindowHovered()` to access advanced hovering-test behavior. Generally useful for pop-ups and drag and drop behaviors: (relates to ~#439, #1013, #143, #925)
+  - `ImGuiHoveredFlags_AllowWhenBlockedByPopup`
+  - `ImGuiHoveredFlags_AllowWhenBlockedByActiveItem`
+  - `ImGuiHoveredFlags_AllowWhenOverlapped`
+  - `ImGuiHoveredFlags_RectOnly`
+- Input: Added `IsMousePosValid()` helper.
+- Input: Added `GetKeyPressedAmount()` to easily measure press count when the repeat rate is faster than the frame rate.
+- Input/Focus: Disabled TAB and Shift+TAB when CTRL key is held.
+- CheckBox: Now rendering a tick mark instead of a full square.
+- ColorEdit4: Added "Copy as..." option in context menu. (#346)
+- ColorPicker: Improved ColorPicker hue wheel color interpolation. (#1313) [@thevaber]
+- ColorButton: Reduced bordering artifact that would be particularly visible with an opaque Col_FrameBg and FrameRounding enabled.
+- ColorButton: Fixed rendering color button with a checkerboard if the transparency comes from the global style.Alpha and not from the actual source color.
+- TreeNode: Added `ImGuiTreeNodeFlags_FramePadding` flag to conveniently create a tree node with full padding at the beginning of a line, without having to call `AlignTextToFramePadding()`.
+- Trees: Fixed calling `SetNextTreeNodeOpen()` on a collapsed window leaking to the first tree node item of the next frame.
+- Layout: Horizontal layout is automatically enforced in a menu bar, so you can use non-MenuItem elements without calling SameLine().
+- Separator: Output a vertical separator when used inside a menu bar (or in general when horizontal layout is active, but that isn't exposed yet!).
+- Window: Added `IsWindowAppearing()` helper (helpful e.g. as a condition before initializing some of your own things.).
+- Window: Added pivot parameter to `SetNextWindowPos()`, making it possible to center or right align a window. Obsoleted `SetNextWindowPosCenter()`.
+- Window: Fixed title bar color of top-most window under a modal window.
+- Window: Fixed not being able to move a window by clicking on one of its child window. (#1337, #635)
+- Window: Fixed `Begin()` auto-fit calculation code that predict the presence of a scrollbar so it works better when window size constraints are used.
+- Window: Fixed calling `Begin()` more than once per frame setting `window_just_activated_by_user` which in turn would set enable the Appearing condition for that frame.
+- Window: The implicit "Debug" window now uses a "Debug##Default" identifier instead of "Debug" to allow user creating a window called "Debug" without losing their custom flags.
+- Window: Made the `ImGuiWindowFlags_NoMove` flag properly inherited from parent to child. In a setup with ParentWindow (no flag) -> Child (NoMove) -> SubChild (no flag), the user won't be able to move the parent window by clicking on SubChild. (#1381)
+- Popups: Pop-ups can be closed with a right-click anywhere, without altering focus under the pop-up. (~#439)
+- Popups: `BeginPopupContextItem()`, `BeginPopupContextWindow()` are now setup to allow reopening a context menu by right-clicking again. (~#439)
+- Popups: `BeginPopupContextItem()` now supports a NULL string identifier and uses the last item ID if available.
+- Popups: Added `OpenPopupOnItemClick()` helper which mimic `BeginPopupContextItem()` but doesn't do the BeginPopup().
+- MenuItem: Only activating on mouse release. [@Urmeli0815] (was already fixed in nav branch).
+- MenuItem: Made tick mark thicker (thick mark?).
+- MenuItem: Tweaks to be usable inside a menu bar (nb: it looks like a regular menu and thus is misleading, prefer using Button() and regular widgets in menu bar if you need to). (#1387)
+- ImDrawList: Fixed a rare draw call merging bug which could lead to undisplayed triangles. (#1172, #1368)
+- ImDrawList: Fixed a rare bug in `ChannelsMerge()` when all contents has been clipped, leading to an extraneous draw call being created. (#1172, #1368)
+- ImFont: Added `AddGlyph()` building helper for use by custom atlas builders.
+- ImFontAtlas: Added support for CustomRect API to submit custom rectangles to be packed into the atlas. You can map them as font glyphs, or use them for custom purposes.
+  After the atlas is built you can query the position of your rectangles in the texture and then copy your data there. You can use this features to create e.g. full color font-mapped icons.
+- ImFontAtlas: Fixed fall-back handling when merging fonts, if a glyph was missing from the second font input it could have used a glyph from the first one. (#1349) [@inolen]
+- ImFontAtlas: Fixed memory leak on build failure case when stbtt_InitFont failed (generally due to incorrect or supported font type). (#1391) (@Moka42)
+- ImFontConfig: Added `RasterizerMultiply` option to alter the brightness of individual fonts at rasterization time, which may help increasing readability for some.
+- ImFontConfig: Added `RasterizerFlags` to pass options to custom rasterizer (e.g. the [imgui_freetype](https://github.com/ocornut/imgui_club/tree/master/imgui_freetype) rasterizer in imgui_club has such options).
+- ImVector: added resize() variant with initialization value.
+- Misc: Changed the internal name formatting of child windows identifier to use slashes (instead of dots) as separator, more readable.
+- Misc: Fixed compilation with `IMGUI_DISABLE_OBSOLETE_FUNCTIONS` defined.
+- Misc: Marked all format+va_list functions with format attribute so GCC/Clang can warn about misuses.
+- Misc: Fixed compilation on NetBSD due to missing alloca.h (#1319) [@RyuKojiro]
+- Misc: Improved warnings compilation for newer versions of Clang. (#1324) (@waywardmonkeys)
+- Misc: Added `io.WantMoveMouse flags` (from Nav branch) and honored in Examples applications. Currently unused but trying to spread Examples applications code that supports it.
+- Misc: Added `IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS` support in imconfig.h to allow user reimplementing the `ImFormatString()` functions e.g. to use stb_printf(). (#1038)
+- Misc: [Windows] Fixed default Win32 `SetClipboardText()` handler leaving the Win32 clipboard handler unclosed on failure. [@pdoane]
+- Style: Added `ImGuiStyle::ScaleAllSizes(float)` helper to make it easier to have application transition e.g. from low to high DPI with a matching style.
+- Metrics: Draw window bounding boxes when hovering Pos/Size; List all draw layers; Trimming empty commands like Render() does.
+- Examples: OpenGL3: Save and restore sampler state. (#1145) [@nlguillemot]
+- Examples: OpenGL2, OpenGL3: Save and restore polygon mode. (#1307) [@JJscott]
+- Examples: DirectX11: Allow creating device with feature level 10 since we don't really need much for that example. (#1333)
+- Examples: DirectX9/10/12: Using the Win32 SetCapture/ReleaseCapture API to read mouse coordinates when they are out of bounds. (#1375) [@Gargaj, @ocornut]
+- Tools: Fixed binary_to_compressed_c tool to return 0 when successful. (#1350) [@benvanik]
+- Internals: Exposed more helpers and unfinished features in imgui_internal.h. (use at your own risk!).
+- Internals: A bunch of internal refactoring, hopefully haven't broken anything! Merged a bunch of internal changes from the upcoming Navigation branch.
+- Various tweaks, fixes and documentation changes.
+
+Beta Navigation Branch:
+(Lots of work has been done toward merging the Beta Gamepad/Keyboard Navigation branch (#787) in master.)
+(Please note that this branch is always kept up to date with master. If you are using the navigation branch, some of the changes include:)
+- Nav: Added `#define IMGUI_HAS_NAV` in imgui.h to ease sharing code between both branches. (#787)
+- Nav: MainMenuBar now releases focus when user gets out of the menu layer. (#787)
+- Nav: When applying focus to a window with only menus, the menu layer is automatically activated. (#787)
+- Nav: Added `ImGuiNavInput_KeyMenu` (~Alt key) aside from ImGuiNavInput_PadMenu input as it is one differentiator of pad vs keyboard that was detrimental to the keyboard experience. Although isn't officially supported, it makes the current experience better. (#787)
+- Nav: Move requests now wrap vertically inside Menus and Pop-ups. (#787)
+- Nav: Allow to collapse tree nodes with NavLeft and open them with NavRight. (#787, #1079).
+- Nav: It's now possible to navigate sibling of a menu-bar while navigating inside one of their child. If a Left<>Right navigation request fails to find a match we forward the request to the root menu. (#787, #126)
+- Nav: Fixed `SetItemDefaultFocus` from stealing default focus when we are initializing default focus for a menu bar layer. (#787)
+- Nav: Support for fall-back horizontal scrolling with PadLeft/PadRight (nb: fall-back scrolling is only used to navigate windows that have no interactive items). (#787)
+- Nav: Fixed tool-tip from being selectable in the window selection list. (#787)
+- Nav: `CollapsingHeader(bool*)` variant: fixed for `IsItemHovered()` not working properly in the nav branch. (#600, #787)
+- Nav: InputText: Fixed using Up/Down history callback feature when Nav is enabled. (#787)
+- Nav: InputTextMultiline: Fixed navigation/selection. Disabled selecting all when activating a multi-line text editor. (#787)
+- Nav: More consistently drawing a (thin) navigation rectangle hover filled frames such as tree nodes, collapsing header, menus. (#787)
+- Nav: Various internal refactoring.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.51 (2017-08-24)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.51
+
+Breaking Changes:
+
+Work on dear imgui has been gradually resuming. It means that fixes and new features should be tackled at a faster rate than last year. However, in order to move forward with the library and get rid of some cruft, I have taken the liberty to be a little bit more aggressive than usual with API breaking changes. Read the details below and search for those names in your code! In the grand scheme of things, those changes are small and should not affect everyone, but this is technically our most aggressive release so far in term of API breakage. If you want to be extra forward-facing, you can enable `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h to disable the obsolete names/redirection.
+
+- Renamed `IsItemHoveredRect()` to `IsItemRectHovered()`. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringWindow()` to `IsWindowRectHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `IsMouseHoveringAnyWindow()` to `IsAnyWindowHovered()` for consistency. Kept inline redirection function (will obsolete).
+- Renamed `ImGuiCol_Columns***` enums to `ImGuiCol_Separator***`. Kept redirection enums (will obsolete).
+- Renamed `ImGuiSetCond***` types and enums to `ImGuiCond***`. Kept redirection enums (will obsolete).
+- Renamed `GetStyleColName()` to `GetStyleColorName()` for consistency. Unlikely to be used by end-user!
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload, which _might_ cause an "ambiguous call" compilation error if you are using ImColor() with implicit cast. Cast to ImU32 or ImVec4 explicitly to fix.
+- Marked the weird `IMGUI_ONCE_UPON_A_FRAME` helper macro as obsolete. Prefer using the more explicit `ImGuiOnceUponAFrame`.
+- Changed `ColorEdit4(const char* label, float col[4], bool show_alpha = true)` signature to `ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)`, where flags 0x01 is a safe no-op (hello dodgy backward compatibility!). The new `ColorEdit4`/`ColorPicker4` functions have lots of available flags! Check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
+- Changed signature of `ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)` to `ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))`. This function was rarely used and was very dodgy (no explicit ID!).
+- Changed `BeginPopupContextWindow(bool also_over_items=true, const char* str_id=NULL, int mouse_button=1)` signature to `(const char* str_id=NULL, int mouse_button=1, bool also_over_items=true)`. This is perhaps the most aggressive change in this update, but note that the majority of users relied on default parameters completely, so this will affect only a fraction of users of this already rarely used function.
+- Removed `IsPosHoveringAnyWindow()`, which was partly broken and misleading. In the vast majority of cases, people using that function wanted to use `io.WantCaptureMouse` flag. Replaced with IM_ASSERT + comment redirecting user to `io.WantCaptureMouse`. (#1237)
+- Removed the old `ValueColor()` helpers, they are equivalent to calling `Text(label)` + `SameLine()` + `ColorButton()`.
+- Removed `ColorEditMode()` and `ImGuiColorEditMode` type in favor of `ImGuiColorEditFlags` and parameters to the various Color*() functions. The `SetColorEditOptions()` function allows to initialize default but the user can still change them with right-click context menu. Commenting out your old call to `ColorEditMode()` may just be fine!
+
+Other Changes:
+
+- Added flags to `ColorEdit3()`, `ColorEdit4()`. The color edit widget now has a context-menu and access to the color picker. (#346)
+- Added flags to `ColorButton()`. (#346)
+- Added `ColorPicker3()`, `ColorPicker4()`. The API along with those of the updated `ColorEdit4()` was designed so you may use them in various situation and hopefully compose your own picker if required. There are a bunch of available flags, check the Demo window and comment for `ImGuiColorEditFlags_`. Some of the options it supports are: two color picker types (hue bar + sat/val rectangle, hue wheel + rotating sat/val triangle), display as u8 or float, lifting 0.0..1.0 constraints (currently rgba only), context menus, alpha bar, background checkerboard options, preview tooltip, basic revert. For simple use, calling the existing `ColorEdit4()` function as you did before will be enough, as you can now open the color picker from there. (#346) [@r-lyeh, @nem0, @thennequin, @dariomanesku and @ocornut]
+- Added `SetColorEditOptions()` to set default color options (e.g. if you want HSV over RGBA, float over u8, select a default picker mode etc. at startup time without a user intervention. Note that the user can still change options with the context menu unless disabled with `ImGuiColorFlags_NoOptions` or explicitly enforcing a display type/picker mode etc.).
+- Added user-facing `IsPopupOpen()` function. (#891) [@mkeeter]
+- Added `GetColorU32(u32)` variant that perform the style alpha multiply without a floating-point round trip, and helps makes code more consistent when using ImDrawList APIs.
+- Added `PushStyleColor(ImGuiCol idx, ImU32 col)` overload.
+- Added `GetStyleColorVec4(ImGuiCol idx)` which is equivalent to accessing `ImGui::GetStyle().Colors[idx]` (aka return the raw style color without alpha alteration).
+- ImFontAtlas: Added `GlyphRangesBuilder` helper class, which makes it easier to build custom glyph ranges from your app/game localization data, or add into existing glyph ranges.
+- ImFontAtlas: Added `TexGlyphPadding` option. (#1282) [@jadwallis]
+- ImFontAtlas: Made it possible to override size of AddFontDefault() (even if it isn't really recommended!).
+- ImDrawList: Added `GetClipRectMin()`, `GetClipRectMax()` helpers.
+- Fixed Ini saving crash if the ImGuiWindowFlags_NoSavedSettings gets removed from a window after its creation (unlikely!). (#1000)
+- Fixed `PushID()`/`PopID()` from marking parent window as Accessed (which needlessly woke up the root "Debug" window when used outside of a regular window). (#747)
+- Fixed an assert when calling `CloseCurrentPopup()` twice in a row. [@nem0]
+- Window size can be loaded from .ini data even if ImGuiWindowFlags_NoResize flag is set. (#1048, #1056)
+- Columns: Added `SetColumnWidth()`. (#913) [@ggtucker]
+- Columns: Dragging a column preserve its width by default. (#913) [@ggtucker]
+- Columns: Fixed first column appearing wider than others. (#1266)
+- Columns: Fixed allocating space on the right-most side with the assumption of a vertical scrollbar. The space is only allocated when needed. (#125, #913, #893, #1138)
+- Columns: Fixed the right-most column from registering its content width to the parent window, which led to various issues when using auto-resizing window or e.g. horizontal scrolling. (#519, #125, #913)
+- Columns: Refactored some of the columns code internally toward a better API (not yet exposed) + minor optimizations. (#913) [@ggtucker, @ocornut]
+- Popups: Most pop-ups windows can be moved by the user after appearing (if they don't have explicit positions provided by caller, or e.g. sub-menu pop-up). The previous restriction was totally arbitrary. (#1252)
+- Tooltip: `SetTooltip()` is expanded immediately into a window, honoring current font / styling setting. Add internal mechanism to override tooltips. (#862)
+- PlotHistogram: bars are drawn based on zero-line, so negative values are going under. (#828)
+- Scrolling: Fixed return values of `GetScrollMaxX()`, `GetScrollMaxY()` when both scrollbars were enabled. Tweak demo to display more data. (#1271) [@degracode]
+- Scrolling: Fixes for Vertical Scrollbar not automatically getting enabled if enabled Horizontal Scrollbar straddle the vertical limit. (#1271, #246)
+- Scrolling: `SetScrollHere()`, `SetScrollFromPosY()`: Fixed Y scroll aiming when Horizontal Scrollbar is enabled. (#665).
+- [Windows] Clipboard: Fixed not closing Win32 clipboard on early open failure path. (#1264)
+- Removed an unnecessary dependency on int64_t which failed on some older compilers.
+- Demo: Rearranged everything under Widgets in a more consistent way.
+- Demo: Columns: Added Horizontal Scrolling demo. Tweaked another Columns demo. (#519, #125, #913)
+- Examples: OpenGL: Various makefiles for MINGW, Linux. (#1209, #1229, #1209) [@fr500, @acda]
+- Examples: Enabled vsync by default in example applications, so it doesn't confuse people that the sample run at 2000+ fps and waste an entire CPU. (#1213, #1151).
+- Various other small fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.50 (2017-06-02)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.50
+
+Breaking Changes:
+
+- Added a void* user_data parameter to Clipboard function handlers. (#875)
+- SameLine(x) with x>0.0f is now relative to left of column/group if any, and not always to left of window. This was sort of always the intent and hopefully breakage should be minimal.
+- Renamed ImDrawList::PathFill() - rarely used directly - to ImDrawList::PathFillConvex() for clarity and consistency.
+- Removed ImFontConfig::MergeGlyphCenterV in favor of a more multipurpose ImFontConfig::GlyphOffset.
+- Style: style.WindowTitleAlign is now a ImVec2 (ImGuiAlign enum was removed). set to (0.5f,0.5f) for horizontal+vertical centering, (0.0f,0.0f) for upper-left, etc.
+- BeginChild(const char*) now applies the stack id to the provided label, consistently with other functions as it should always have been. It shouldn't affect you unless (extremely unlikely) you were appending multiple times to a same child from different locations of the stack id. If that's the case, generate an id with GetId() and use it instead of passing string to BeginChild().
+
+Other Changes:
+
+- InputText(): Added support for CTRL+Backspace (delete word).
+- InputText(): OSX uses Super+Arrows for home/end. Add Shortcut+Backspace support. (#650) [@michaelbartnett]
+- InputText(): Got rid of individual OSX-specific options in ImGuiIO, added a single io.OSXBehaviors flag. (#473, #650)
+- InputText(): Fixed pressing home key on last character when it isn't a trailing \n (#588, #815)
+- InputText(): Fixed state corruption/crash bug in stb_textedit.h redo logic when exhausting undo/redo char buffer. (#715. #681)
+- InputTextMultiline(): Fixed CTRL+DownArrow moving scrolling out of bounds.
+- InputTextMultiline(): Scrollbar fix for when input and latched internal buffers differs in a way that affects vertical scrollbar existence. (#725)
+- ImFormatString(): Fixed an overflow handling bug with implementation of vsnprintf() that do not return -1. (#793)
+- BeginChild(const char*) now applies stack id to provided label, consistent with other widgets. (#894, #713)
+- SameLine() with explicit X position is relative to left of group/columns. (ref #746, #125, #630)
+- SliderInt(), SliderFloat() supports reverse direction (where v_min > v_max). (#854)
+- SliderInt(), SliderFloat() better support for when v_min==v_max. (#919)
+- SliderInt(), SliderFloat() enforces writing back value when interacting, to be consistent with other widgets. (#919)
+- SliderInt, SliderFloat(): Fixed edge case where style.GrabMinSize being bigger than slider width can lead to a division by zero. (#919)
+- Added IsRectVisible() variation with explicit start-end positions. (#768) [@thedmd]
+- Fixed TextUnformatted() clipping bug in the large-text path when horizontal scroll has been applied. (#692, #246)
+- Fixed minor text clipping issue in window title when using font straying above usual line. (#699)
+- Fixed SetCursorScreenPos() fixed not adjusting CursorMaxPos as well.
+- Fixed scrolling offset when using SetScrollY(), SetScrollFromPosY(), SetScrollHere() with menu bar.
+- Fixed using IsItemActive() after EndGroup() or any widget using groups. (#840, #479)
+- Fixed IsItemActive() lagging by one frame on initial widget activation. (#840)
+- Fixed Separator() zero-height bounding box resulting in clipping when laying exactly on top line of clipping rectangle (#860)
+- Fixed PlotLines() PlotHistogram() calling with values_count == 0.
+- Fixed clicking on a window's void while staying still overzealously marking .ini settings as dirty. (#923)
+- Fixed assert triggering when a window has zero rendering but has a callback. (#810)
+- Scrollbar: Fixed rendering when sizes are negative to reduce glitches (which can happen with certain style settings and zero WindowMinSize).
+- EndGroup(): Made IsItemHovered() work when an item was activated within the group. (#849)
+- BulletText(): Fixed stopping to display formatted string after the '##' mark.
+- Closing the focused window restore focus to the first active root window in descending z-order .(part of #727)
+- Word-wrapping: Fixed a bug where we never wrapped after a 1 character word. [@sronsse]
+- Word-wrapping: Fixed TextWrapped() overriding wrap position if one is already set. (#690)
+- Word-wrapping: Fixed incorrect testing for negative wrap coordinates, they are perfectly legal. (#706)
+- ImGuiListClipper: Fixed automatic-height calc path dumbly having user display element 0 twice. (#661, #716)
+- ImGuiListClipper: Fix to behave within column. (#661, #662, #716)
+- ImDrawList: Renamed ImDrawList::PathFill() to ImDrawList::PathFillConvex() for clarity. (BREAKING API)
+- Columns: End() avoid calling Columns(1) if no columns set is open, not sure why it wasn't the case already (pros: faster, cons: exercise less code).
+- ColorButton(): Fix ColorButton showing wrong hex value for alpha. (#1068) [@codecat]
+- ColorEdit4(): better preserve inputting value out of 0..255 range, display then clamped in Hexadecimal form.
+- Shutdown() clear out some remaining pointers for sanity. (#836)
+- Added IMGUI_USE_BGRA_PACKED_COLOR option in imconfig.h (#767, #844) [@thedmd]
+- Style: Removed the inconsistent shadow under RenderCollapseTriangle() (~#707)
+- Style: Added ButtonTextAlign, ImGuiStyleVar_ButtonTextAlign. (#842)
+- ImFont: Allowing to use up to 0xFFFE glyphs in same font (increased from previous 0x8000).
+- ImFont: Added GetGlyphRangesThai() helper. [@nProtect]
+- ImFont: CalcWordWrapPositionA() fixed font scaling with fallback character.
+- ImFont: Calculate and store the approximate texture surface to get an idea of how costly each source font is.
+- ImFontConfig: Added GlyphOffset to explicitly offset glyphs at font build time, useful for merged fonts. Removed MergeGlyphCenterV. (BREAKING API)
+- Clarified asserts in CheckStacksSize() when there is a stack mismatch.
+- Context: Support for #define-ing GImGui and IMGUI_SET_CURRENT_CONTEXT_FUNC to enable custom thread-based hackery (#586)
+- Updated stb_truetype.h to 1.14 (added OTF support, removed warnings). (#883, #976)
+- Updated stb_rect_pack.h to 0.10 (removed warnings). (#883)
+- Added ImGuiMouseCursor_None enum value for convenient usage by app/binding.
+- Clipboard: Added a void* user_data parameter to Clipboard function handlers. (#875) (BREAKING API)
+- Internals: Refactor internal text alignment options to use ImVec2, removed ImGuiAlign. (#842, #222)
+- Internals: Renamed ImLoadFileToMemory to ImFileLoadToMemory to be consistent with ImFileOpen + fix mismatching .h name. (#917)
+- OS/Windows: Fixed Windows default clipboard handler leaving its buffer unfreed on application's exit. (#714)
+- OS/Windows: No default IME handler when compiling for Windows using GCC. (#738)
+- OS/Windows: Now using _wfopen() instead of fopen() to allow passing in paths/filenames with UTF-8 characters. (#917)
+- Tools: binary_to_compressed_c: Avoid ?? trigraphs sequences in string outputs which break some older compilers. (#839)
+- Demo: Added an extra 3-way columns demo.
+- Demo: ShowStyleEditor: show font character map / grid in more details.
+- Demo: Console: Fixed a completion bug when multiple candidates are equals and match until the end.
+- Demo: Fixed 1-byte off overflow in the ShowStyleEditor() combo usage. (#783) [@bear24rw]
+- Examples: Accessing ImVector fields directly, feel less stl-ey. (#810)
+- Examples: OpenGL*: Saving/restoring existing scissor rectangle for completeness. (#807)
+- Examples: OpenGL*: Saving/restoring active texture number (the value modified by glActiveTexture). (#1087, #1088, #1116)
+- Examples: OpenGL*: Saving/restoring separate color/alpha blend functions correctly. (#1120) [@greggman]
+- Examples: OpenGL2: Uploading font texture as RGBA32 to increase compatibility with users shaders for beginners. (#824)
+- Examples: Vulkan: Countless fixes and improvements. (#785, #804, #910, #1017, #1039, #1041, #1042, #1043, #1080) [@martty, @Loftilus, @ParticlePeter, @SaschaWillems]
+- Examples: DirectX9/10/10: Only call SetCursor(NULL) is io.MouseDrawCursor is set. (#585, #909)
+- Examples: DirectX9: Explicitly setting viewport to match that other examples are doing. (#937)
+- Examples: GLFW+OpenGL3: Fixed Shutdown() calling GL functions with NULL parameters if NewFrame was never called. (#800)
+- Examples: GLFW+OpenGL2: Renaming opengl_example/ to opengl2_example/ for clarity.
+- Examples: SDL+OpenGL: explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+- Examples: SDL2: Added build .bat files for Win32.
+- Added various links to language/engine bindings.
+- Various other minor fixes, tweaks, comments, optimizations.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.49 (2016-05-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.49
+
+Breaking Changes:
+
+- Renamed `SetNextTreeNodeOpened()` to `SetNextTreeNodeOpen()` for consistency, no redirection.
+- Removed confusing set of `GetInternalState()`, `GetInternalStateSize()`, `SetInternalState()` functions. Now using `CreateContext()`, `DestroyContext()`, `GetCurrentContext()`, `SetCurrentContext()`. If you were using multiple contexts the change should be obvious and trivial.
+- Obsoleted old signature of `CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false)`, as extra parameters were badly designed and rarely used. Most uses were using 1 parameter and shouldn't affect you. You can replace the "default_open = true" flag in new API with `CollapsingHeader(label, ImGuiTreeNodeFlags_DefaultOpen)`.
+- Changed `ImDrawList::PushClipRect(ImVec4 rect)` to `ImDraw::PushClipRect(ImVec2 min,ImVec2 max,bool intersect_with_current_clip_rect=false)`. Note that higher-level `ImGui::PushClipRect()` is preferable because it will clip at logic/widget level, whereas `ImDrawList::PushClipRect()` only affect your renderer.
+- Title bar (using ImGuiCol_TitleBg/ImGuiCol_TitleBgActive colors) isn't rendered over a window background (ImGuiCol_WindowBg color) anymore (see #655). If your TitleBg/TitleBgActive alpha was 1.0f or you are using the default theme it will not affect you. However if your TitleBg/TitleBgActive alpha was <1.0f you need to tweak your custom theme to readjust for the fact that we don't draw a WindowBg background behind the title bar.
+  This helper function will convert an old TitleBg/TitleBgActive color into a new one with the same visual output, given the OLD color and the OLD WindowBg color. (Or If this is confusing, just pick the RGB value from title bar from an old screenshot and apply this as TitleBg/TitleBgActive. Or you may just create TitleBgActive from a tweaked TitleBg color.)
+
+    ImVec4 ConvertTitleBgCol(const ImVec4& win_bg_col, const ImVec4& title_bg_col)
+    {
+       float new_a = 1.0f - ((1.0f - win_bg_col.w) * (1.0f - title_bg_col.w));
+       float k = title_bg_col.w / new_a;
+       return ImVec4((win_bg_col.x * win_bg_col.w + title_bg_col.x) * k, (win_bg_col.y * win_bg_col.w + title_bg_col.y) * k, (win_bg_col.z * win_bg_col.w + title_bg_col.z) * k, new_a);
+    }
+
+Other changes:
+
+- New version of ImGuiListClipper helper calculates item height automatically. See comments and demo code. (#662, #661, #660)
+- Added SetNextWindowSizeConstraints() to enable basic min/max and programmatic size constraints on window. Added demo. (#668)
+- Added PushClipRect()/PopClipRect() (previously part of imgui_internal.h). Changed ImDrawList::PushClipRect() prototype. (#610)
+- Added IsRootWindowOrAnyChildHovered() helper. (#615)
+- Added TreeNodeEx() functions. (#581, #600, #190)
+- Added ImGuiTreeNodeFlags_Selected flag to display TreeNode as "selected". (#581, #190)
+- Added ImGuiTreeNodeFlags_AllowOverlapMode flag. (#600)
+- Added ImGuiTreeNodeFlags_NoTreePushOnOpen flag (#590).
+- Added ImGuiTreeNodeFlags_NoAutoOpenOnLog flag (previously private).
+- Added ImGuiTreeNodeFlags_DefaultOpen flag (previously private).
+- Added ImGuiTreeNodeFlags_OpenOnDoubleClick flag.
+- Added ImGuiTreeNodeFlags_OpenOnArrow flag.
+- Added ImGuiTreeNodeFlags_Leaf flag, always opened, no arrow, for convenience. For simple use case prefer using TreeAdvanceToLabelPos()+Text().
+- Added ImGuiTreeNodeFlags_Bullet flag, to add a bullet to Leaf node or replace Arrow with a bullet.
+- Added TreeAdvanceToLabelPos(), GetTreeNodeToLabelSpacing() helpers. (#581, #324)
+- Added CreateContext()/DestroyContext()/GetCurrentContext()/SetCurrentContext(). Obsoleted nearly identical GetInternalState()/SetInternalState() functions. (#586, #269)
+- Added NewLine() to undo a SameLine() and as a shy reminder that horizontal layout support hasn't been implemented yet.
+- Added IsItemClicked() helper. (#581)
+- Added CollapsingHeader() variant with close button. (#600)
+- Fixed MenuBar missing lower border when borders are enabled.
+- InputText(): Fixed clipping of cursor rendering in case it gets out of the box (which can be forced w/ ImGuiInputTextFlags_NoHorizontalScroll. (#601)
+- Style: Changed default IndentSpacing from 22 to 21. (#581, #324)
+- Style: Fixed TitleBg/TitleBgActive color being rendered above WindowBg color, which was inconsistent and causing visual artifact. (#655)
+  This broke the meaning of TitleBg and TitleBgActive. Only affect values where Alpha<1.0f. Fixed default theme. Read comments in "API BREAKING CHANGES" section to convert.
+- Relative rendering of order of Child windows creation is preserved, to allow more control with overlapping children. (#595)
+- Fixed GetWindowContentRegionMax() being off by ScrollbarSize amount when explicit SizeContents is set.
+- Indent(), Unindent(): optional non-default indenting width. (#324, #581)
+- Bullet(), BulletText(): Slightly bigger. Less polygons.
+- ButtonBehavior(): fixed subtle old bug when a repeating button would also return true on mouse release (barely noticeable unless RepeatRate is set to be very slow). (#656)
+- BeginMenu(): a menu that becomes disabled while open gets closed down, facilitate user's code. (#126)
+- BeginGroup(): fixed using within Columns set. (#630)
+- Fixed a lag in reading the currently hovered window when dragging a window. (#635)
+- Obsoleted 4 parameters version of CollapsingHeader(). Refactored code into TreeNodeBehavior. (#600, #579)
+- Scrollbar: minor fix for top-right rounding of scrollbar background when window has menu bar but no title bar.
+- MenuItem(): the check mark renders in disabled color when menu item is disabled.
+- Fixed clipping rectangle floating point representation to ensure renderer-side float point operations yield correct results in typical DirectX/GL settings. (#582, 597)
+- Fixed GetFrontMostModalRootWindow(), fixing missing fade-out when a combo pop was used stacked over a modal window. (#604)
+- ImDrawList: Added AddQuad(), AddQuadFilled() helpers.
+- ImDrawList: AddText() refactor, moving some code to ImFont, reserving less unused vertices when large vertical clipping occurs.
+- ImFont: Added RenderChar() helper.
+- ImFont: Added AddRemapChar() helper. (#609)
+- ImFontConfig: Clarified persistence requirement of GlyphRanges array. (#651)
+- ImGuiStorage: Added bool helper functions for completeness.
+- AddFontFromMemoryCompressedTTF(): Fix ImFontConfig propagation. (#587)
+- Renamed majority of use of the word "opened" to "open" for clarity. Renamed SetNextTreeNodeOpened() to SetNextTreeNodeOpen(). (#625, #579)
+- Examples: OpenGL3: Saving/restoring glActiveTexture() state. (#602)
+- Examples: DirectX9: save/restore all device state.
+- Examples: DirectX9: Removed dependency on d3dx9.h, d3dx9.lib, dxguid.lib so it can be used in a DirectXMath.h only environment. (#611)
+- Examples: DirectX10/X11: Apply depth-stencil state (no use of depth buffer). (#640, #636)
+- Examples: DirectX11/X11: Added comments on removing dependency on D3DCompiler. (#638)
+- Examples: SDL: Initialize video+timer subsystem only.
+- Examples: Apple/iOS: lowered XCode project deployment target from 10.7 to 10.11. (#598, #575)
+
+
+-----------------------------------------------------------------------
+ VERSION 1.48 (2016-04-09)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.48
+
+Breaking Changes:
+
+- Consistently honoring exact width passed to PushItemWidth() (when positive), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Style: removed `style.WindowFillAlphaDefault` which was confusing and redundant, baked alpha into `ImGuiCol_WindowBg` color. If you had a custom WindowBg color but didn't change WindowFillAlphaDefault, multiply WindowBg alpha component by 0.7. Renamed `ImGuiCol_TooltipBg` to `ImGuiCol_PopupBG`, applies to other types of pop-ups. `bg_alpha` parameter of 5-parameters version of Begin() is an override. (#337)
+- InputText(): Added BufTextLen field in ImGuiTextEditCallbackData. Requesting user to update it if the buffer is modified in the callback. Added a temporary length-check assert to minimize panic for the 3 people using the callback. (#541)
+- Renamed GetWindowFont() to GetFont(), GetWindowFontSize() to GetFontSize(). Kept inline redirection function (will obsolete). (#340)
+
+Other Changes:
+
+- Consistently honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. Some hand-tuned layout may be affected slightly. (#346)
+- Fixed clipping of child windows within parent not taking account of child outer clipping boundaries (including scrollbar, etc.). (#506)
+- TextUnformatted(): Fixed rare crash bug with large blurb of text (2k+) not finished with a '\n' and fully above the clipping Y line. (#535)
+- IO: Added 'KeySuper' field to hold CMD keyboard modifiers for OS X. Updated all examples accordingly. (#473)
+- Added ImGuiWindowFlags_ForceVerticalScrollbar, ImGuiWindowFlags_ForceHorizontalScrollbar flags. (#476)
+- Added IM_COL32 macros to generate a U32 packed color, convenient for direct use of ImDrawList api. (#346)
+- Added GetFontTexUvWhitePixel() helper, convenient for direct use of ImDrawList api.
+- Selectable(): Added ImGuiSelectableFlags_AllowDoubleClick flag to allow user reacting on double-click. (@zapolnov) (#516)
+- Begin(): made the close button explicitly set the boolean to false instead of toggling it. (#499)
+- BeginChild()/EndChild(): fixed incorrect layout to allow widgets submitted after an auto-fitted child window. (#540)
+- BeginChild(): Added ImGuiWindowFlags_AlwaysUseWindowPadding flag to ensure non-bordered child window uses window padding. (#462)
+- Fixed InputTextMultiLine(), ListBox(), BeginChildFrame(), ProgressBar(): outer frame not honoring bordering. (#462, #503)
+- Fixed Image(), ImageButtion() rendering a rectangle 1 px too large on each axis. (#457)
+- SetItemAllowOverlap(): Promoted from imgui_internal.h to public imgui.h api. (#517)
+- Combo(): Right-most button stays highlighted when pop-up is open.
+- Combo(): Display pop-up above if there's isn't enough space below / or select largest side. (#505)
+- DragFloat(), SliderFloat(), InputFloat(): fixed cases of erroneously returning true repeatedly after a text input modification (e.g. "0.0" --> "0.000" would keep returning true). (#564)
+- DragFloat(): Always apply value when mouse is held/widget active, so that an always-reseting variable (e.g. non saved local) can be passed.
+- InputText(): OS X friendly behaviors: Word movement uses ALT key; Shortcuts uses CMD key; Double-clicking text select a single word; Jumping to next word sets cursor to end of current word instead of beginning of current word. (@zhiayang), (#473)
+- InputText(): Added BufTextLen in ImGuiTextEditCallbackData. Requesting user to maintain it if buffer is modified. Zero-ing structure properly before use. (#541)
+- CheckboxFlags(): Added support for testing/setting multiple flags at the same time. (@DMartinek) (#555)
+- TreeNode(), CollapsingHeader() fixed not being able to use "##" sequence in a formatted label.
+- ColorEdit4(): Empty label doesn't add InnerSpacing.x, matching behavior of other widgets. (#346)
+- ColorEdit4(): Removed unnecessary calls to scanf() when idle in hexadecimal edit mode.
+- BeginPopupContextItem(), BeginPopupContextWindow(): added early out optimization.
+- CaptureKeyboardFromApp() / CaptureMouseFromApp(): added argument to allow clearing the capture flag. (#533)
+- ImDrawList: Fixed index-overflow check broken by AddText() casting current index back to ImDrawIdx. (#514)
+- ImDrawList: Fixed incorrect removal of trailing draw command if it is a callback command.
+- ImDrawList: Allow windows with only a callback only to be functional. (#524)
+- ImDrawList: Fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis. (#457)
+- ImDrawList: Fixed ImDrawList::AddCircle() to fit precisely within bounding box like AddCircleFilled() and AddRectFilled(). (#457)
+- ImDrawList: AddCircle(), AddRect() takes optional thickness parameter.
+- ImDrawList: Added AddTriangle().
+- ImDrawList: Added PrimQuadUV() helper to ease custom rendering of textured quads (require primitive reserve).
+- ImDrawList: Allow AddText(ImFont\* font, float font_size, ...) variant to take NULL/0.0f as default.
+- ImFontAtlas: heuristic increase default texture width up for large number of glyphs. (#491)
+- ImTextBuffer: Fixed empty() helper which was utterly broken.
+- Metrics: allow to inspect individual triangles in draw calls.
+- Demo: added more draw primitives in the Custom Rendering example. (#457)
+- Demo: extra comments and example for PushItemWidth(-1) patterns.
+- Demo: InputText password demo filters out blanks. (#515)
+- Demo: Fixed malloc/free mismatch and leak when destructing demo console, if it has been used. (@fungos) (#536)
+- Demo: plot code doesn't use ImVector to avoid heap allocation and be more friendly to custom allocator users. (#538)
+- Fixed compilation on DragonFly BSD (@mneumann) (#563)
+- Examples: Vulkan: Added a Vulkan example (@Loftilus) (#549)
+- Examples: DX10, DX11: Saving/restoring most device state so dropping render function in your codebase shouldn't have DX device side-effects. (#570)
+- Examples: DX10, DX11: Fixed ImGui_ImplDX??_NewFrame() from recreating device objects if render isn't called (g_pVB not set).
+- Examples: OpenGL3: Fix BindVertexArray/BindBuffer order. (@nlguillemot) (#527)
+- Examples: OpenGL: skip rendering and calling glViewport() if we have zero-fixed buffer. (#486)
+- Examples: SDL2+OpenGL3: Fix context creation options. Made ImGui_ImplSdlGL3_NewFrame() signature match GL2 one. (#468, #463)
+- Examples: SDL2+OpenGL2/3: Fix for high-dpi displays. (@nickgravelyn)
+- Various extra comments and clarification in the code.
+- Various other fixes and optimizations.
+
+-----------------------------------------------------------------------
+
+For older version, see https://github.com/ocornut/imgui/releases
+
diff --git a/docs/README.md b/docs/README.md
new file mode 100644
index 0000000..6d724a0
--- /dev/null
+++ b/docs/README.md
@@ -0,0 +1,338 @@
+dear imgui,
+=====
+[![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
+[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+
+_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. E-mail: omarcornut at gmail)._
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+
+Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+
+Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+- imgui.cpp
+- imgui.h
+- imgui_demo.cpp
+- imgui_draw.cpp
+- imgui_widgets.cpp
+- imgui_internal.h
+- imconfig.h (empty by default, user-editable)
+- stb_rect_pack.h
+- stb_textedit.h
+- stb_truetype.h
+
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
+### Usage
+
+Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+
+Code:
+```cpp
+ImGui::Text("Hello, world %d", 123);
+if (ImGui::Button("Save"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
+
+Code:
+```cpp
+// Create a window called "My First Tool", with a menu bar.
+ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
+if (ImGui::BeginMenuBar())
+{
+    if (ImGui::BeginMenu("File"))
+    {
+        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
+        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
+        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
+        ImGui::EndMenu();
+    }
+    ImGui::EndMenuBar();
+}
+
+// Edit a color (stored as ~4 floats)
+ImGui::ColorEdit4("Color", my_color);
+
+// Plot some values
+const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+ 
+// Display contents in a scrolling region
+ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
+ImGui::BeginChild("Scrolling");
+for (int n = 0; n < 50; n++)
+    ImGui::Text("%04d: Some text", n);
+ImGui::EndChild();
+ImGui::End();
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
+### How it works
+
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+
+_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+
+Demo Binaries
+-------------
+
+You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+
+Bindings
+--------
+
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+
+_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+
+Languages: (third-party bindings)
+- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
+- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
+- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
+- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
+- Java: [jimgui](https://github.com/ice1000/jimgui)
+- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
+- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
+- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
+- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
+- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+
+Frameworks:
+- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
+- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
+- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
+- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
+- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
+- Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
+- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
+- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
+- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
+- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
+- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
+- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+
+For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+
+Roadmap
+-------
+Some of the goals for 2018 are:
+- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
+- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Make Columns better. (they are currently pretty terrible!)
+- Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
+
+Gallery
+-------
+User screenshots:
+<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+<br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
+<br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
+<br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
+<br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
+<br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
+<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+
+Various tools
+[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+
+[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
+
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+
+[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
+Code:
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+```
+```cpp
+ImGui::Text(u8"こんにちは！テスト %d", 123);
+if (ImGui::Button(u8"ロード"))
+{
+    // do stuff
+}
+ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
+ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+```
+Result:
+<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
+<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+
+References
+----------
+
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
+- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
+- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
+- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
+- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
+
+See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+
+Support Forums
+--------------
+
+If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+
+For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+
+Frequently Asked Question (FAQ)
+-------------------------------
+
+<b>Where is the documentation?</b>
+
+- The documentation is at the top of imgui.cpp + effectively imgui.h. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
+- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
+- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+
+<b>Which version should I get?</b>
+
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+
+<b>Who uses Dear ImGui?</b>
+
+See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+
+<b>How can I tell whether to dispatch mouse/keyboard to imgui or to my application?</b>
+<br><b>How can I display an image? What is ImTextureID, how does it works?</b>
+<br><b>How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.</b>
+<br><b>How can I use my own math types instead of ImVec2/ImVec4?</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I easily use icons in my application?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+<br><b>How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)</b>
+<br><b>I integrated Dear ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I help?</b>
+
+See the FAQ in imgui.cpp for answers.
+
+<b>How do you use Dear ImGui on a platform that may not have a mouse or keyboard?</b>
+
+You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
+
+You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
+
+For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+<b>Can you create elaborate/serious tools with Dear ImGui?</b>
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+<b>Can you reskin the look of Dear ImGui?</b>
+
+You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
+
+![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
+
+<b>Why using C++ (as opposed to C)?</b>
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly designed for binding in other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+
+Support dear imgui
+------------------
+
+<b>How can I help financing further development of Dear ImGui?</b>
+
+Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+
+Monthly donations via Patreon:
+<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+
+One-off donations via PayPal:
+<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+
+If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for private support, custom development etc. E-mail: omarcornut at gmail). Thanks!
+
+Credits
+-------
+
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+
+I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+
+Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+
+Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+
+Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+
+Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
+
+Double-chocolate sponsors:
+- Blizzard Entertainment
+- Media Molecule
+- Mobigame
+- Insomniac Games
+- Aras Pranckevičius
+- Lizardcube
+- Greggman
+- DotEmu
+- Nadeo
+
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Supercell.
+
+Caramel supporters:
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki.
+
+And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
+
+License
+-------
+
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.
diff --git a/docs/TODO.txt b/docs/TODO.txt
new file mode 100644
index 0000000..2b76024
--- /dev/null
+++ b/docs/TODO.txt
@@ -0,0 +1,315 @@
+dear imgui
+ISSUES & TODO LIST
+
+Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
+It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
+
+ - doc/test: add a proper documentation+regression testing system (#435)
+ - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc/tips: tips of the day: website? applet in imgui_club?
+ - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
+
+ - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
+ - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
+ - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
+ - window: allow resizing of child windows (possibly given min/max for each axis?.)
+ - window: background options for child windows, border option (disable rounding).
+ - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
+ - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
+ - window: fix resize glitch when collapsing an AlwaysAutoResize window.
+ - window: begin with *p_open == false could return false.
+ - window: get size/pos helpers given names (see discussion in #249)
+ - window: a collapsed window can be stuck behind the main menu bar?
+ - window: when window is very small, prioritize resize button over close button.
+ - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
+ - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - window: expose contents size. (#1045)
+ - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
+ - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
+ - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
+ - window: investigate better auto-positioning for new windows.
+ - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents
+
+ - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
+ - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
+ - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
+ - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
+ - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
+ - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+
+ - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
+ - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
+ - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
+ - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
+
+ - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
+ - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
+ - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
+ - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
+ - widgets: activate by identifier (trigger button, focus given id)
+ - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
+ - input text: expose CursorPos in char filter event (#816)
+ - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
+ - input text: hover tooltip could show unclamped text
+ - input text: option to Tab after an Enter validation.
+ - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
+ - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
+ - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
+ - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: line numbers? status bar? (follow up on #200)
+ - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
+ - input text multi-line: better horizontal scrolling support (#383, #1224)
+ - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
+ - input number: optional range min/max for Input*() functions
+ - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
+ - input number: use mouse wheel to step up/down
+ - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+
+ - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
+ - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout: horizontal layout helper (#97)
+ - layout: horizontal flow until no space left (#404)
+ - layout: more generic alignment state (left/right/centered) for single items?
+ - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option. (~#1496)
+ - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
+ 
+ - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+ - columns: headers. reorderable. (#513, #125)
+ - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - columns: option to alternate background colors on odd/even scanlines.  
+ - columns: allow columns to recurse. 
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
+ - columns: flag to add horizontal separator above/below?
+ - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
+
+!- color: the color conversion helpers/types are a mess and needs sorting out. 
+ - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
+
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
+ - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
+ - plot: option/feature: draw the zero line
+ - plot: option/feature: draw grid, vertical markers
+ - plot: option/feature: draw unit
+ - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
+
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
+ - clipper: ability to run without knowing full count in advance.
+
+ - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ 
+ - dock: docking extension
+ - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
+
+ - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
+
+ - button: provide a button that looks framed.
+ - image/image button: misalignment on padded/bordered button?
+ - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
+ - image button: not taking an explicit id is odd.
+ - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
+ - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
+ - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
+ - slider: relative dragging? + precision dragging
+ - slider: step option (#1183)
+ - slider style: fill % of the bar instead of positioning a drag.
+ - knob: rotating knob widget (#942)
+ - drag float: up/down axis
+ - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
+
+ - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658)
+ - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
+ - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection.
+ - listbox: unselect option (#1208)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: user may want to initial scroll to focus on the one selected value?
+ - listbox: expose hovered item for a basic ListBox
+ - listbox: keyboard navigation.
+ - listbox: scrolling should track modified selection.
+
+!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
+ - popups/modal: make modal title bar blink when trying to click outside the modal
+ - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
+ - popups: clicking outside (to close popup) and holding shouldn't drag window below.
+ - popups: add variant using global identifier similar to Begin/End (#402)
+ - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
+ 
+ - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - shortcuts: local-style shortcut api, e.g. parse "&Save"
+ - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
+ - shortcuts: programmatically access shortcuts "Focus("&Save"))
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+
+ - tree node / optimization: avoid formatting when clipped.
+ - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
+ - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
+ - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - tree node: leaf/non-leaf highlight mismatch.
+
+ - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
+ - stb: add defines to disable stb implementations
+
+!- style: better default styles. (#707)
+ - style: add a highlighted text color (for headers, etc.)
+ - style: border types: out-screen, in-screen, etc. (#447)
+ - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
+ - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
+ - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
+ - style: global scale setting.
+ - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
+ - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
+ - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style editor: color child window height expressed in multiple of line height.
+
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
+ - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
+ - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
+ - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+
+ - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
+ - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
+
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
+ - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
+ - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
+ - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: make payload optional? (#143)
+ - drag and drop: feedback when hovering a modal (cursor?)
+ - node/graph editor (#306)
+ - pie menus patterns (#434)
+ - markup: simple markup language for color change? (#902)
+
+!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
+ - font: MergeMode: flags to select overwriting or not.
+ - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: free the Alpha buffer if user only requested RGBA.
+!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
+ - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: PushFontSize API (#1018)
+ - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font/atlas: add a missing Glyphs.reserve()
+ - font/atlas: incremental updates
+ - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
+ - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
+ - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
+ - font/draw: need to be able to specify wrap start position.
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font: imgui_freetype.h alternative renderer (#618)
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
+ - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
+ - font: fix AddRemapChar() to work before font has been built.
+ - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
+ - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
+ - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: ESC on a flattened child should select something.
+ - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
+ - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav: tabs should go through most/all widgets (in submission order?).
+ - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
+ - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
+ - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
+ - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
+ - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
+ - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
+
+ - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
+ - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
+ - inputs: support track pad style scrolling & slider edit.
+ - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
+ - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+
+ - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
+ - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
+ - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
+ - misc: use more size_t in public api?
+ - misc: ImVector: erase_unsorted() helper
+ - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+
+ - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
+ - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
+ - remote: make a system like RemoteImGui first-class citizen/project (#75)
+
+ - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: add vertical separator demo
+ - demo: add virtual scrolling example?
+ - demo: demonstration Plot offset
+ - examples: window minimize, maximize (#583)
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
+ - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: use another hash function than crc32, e.g. FNV1a
+ - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
+ - optimization: turn some the various stack vectors into statically-sized arrays
diff --git a/examples/example_allegro5/example_allegro5.vcxproj b/examples/example_allegro5/example_allegro5.vcxproj
index ec96f62..b079269 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj
+++ b/examples/example_allegro5/example_allegro5.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_allegro5.cpp" />
     <ClCompile Include="imconfig_allegro5.h" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_allegro5/example_allegro5.vcxproj.filters b/examples/example_allegro5/example_allegro5.vcxproj.filters
index 09dbc5e..8019ebf 100644
--- a/examples/example_allegro5/example_allegro5.vcxproj.filters
+++ b/examples/example_allegro5/example_allegro5.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="imconfig_allegro5.h">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
index 0c60ba3..e3bd417 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_freeglut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
index b459194..eb6d852 100644
--- a/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
+++ b/examples/example_freeglut_opengl2/example_freeglut_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl2/Makefile b/examples/example_glfw_opengl2/Makefile
index 7ec7eee..482b0e5 100644
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
index acec434..73c7ba9 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
index acf77fa..b7a37e6 100644
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_glfw_opengl3/Makefile b/examples/example_glfw_opengl3/Makefile
index d36b78d..a9c7007 100644
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
index 07f28e3..172a34d 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
index bffa937..efb570c 100644
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_opengl3.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_marmalade/marmalade_example.mkb b/examples/example_marmalade/marmalade_example.mkb
index f605078..34315b9 100644
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@@ -33,6 +33,7 @@
     ../../imgui.cpp
     ../../imgui_demo.cpp
     ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
     ../../imconfig.h
     ../../imgui.h
     ../../imgui_internal.h
diff --git a/examples/example_sdl_opengl2/Makefile b/examples/example_sdl_opengl2/Makefile
index 1872d7c..4a948aa 100644
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@@ -16,7 +16,7 @@
 
 EXE = example_sdl_opengl2
 SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 
 UNAME_S := $(shell uname -s)
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
index bdec85b..fa6b8d3 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@@ -19,7 +19,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
+    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
index 602fa0b..e0c1bf2 100644
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_opengl3/Makefile b/examples/example_sdl_opengl3/Makefile
index 765c446..6987411 100644
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@@ -17,7 +17,7 @@
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
-SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
index b194e62..9fda189 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_opengl3.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
diff --git a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
index 87ae431..fbef18a 100644
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@@ -34,6 +34,9 @@
     <ClCompile Include="..\imgui_impl_sdl.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
index 3d2a424..622dc09 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_sdl.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
index 4f7c792..6f08252 100644
--- a/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
+++ b/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj b/examples/example_win32_directx10/example_win32_directx10.vcxproj
index df5a026..5e2973b 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx10.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
index c3422a5..9762002 100644
--- a/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
+++ b/examples/example_win32_directx10/example_win32_directx10.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj b/examples/example_win32_directx11/example_win32_directx11.vcxproj
index 9aa0986..166602a 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj
@@ -150,6 +150,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx11.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
index ab1e3fb..1df6a0c 100644
--- a/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
+++ b/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_dx11.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj b/examples/example_win32_directx12/example_win32_directx12.vcxproj
index c82f000..38c8335 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj
@@ -153,6 +153,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx12.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
index 43fdeba..28a2557 100644
--- a/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
+++ b/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters
@@ -44,6 +44,9 @@
     <ClCompile Include="..\imgui_impl_win32.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\README.txt" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj b/examples/example_win32_directx9/example_win32_directx9.vcxproj
index ebc8a92..08f21c8 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj
@@ -143,6 +143,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_dx9.cpp" />
     <ClCompile Include="..\imgui_impl_win32.cpp" />
     <ClCompile Include="main.cpp" />
diff --git a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
index 2ac28d1..914cd26 100644
--- a/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
+++ b/examples/example_win32_directx9/example_win32_directx9.vcxproj.filters
@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_dx9.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
diff --git a/imgui.cpp b/imgui.cpp
index 0b3ea0f..28b986a 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (main code and documentation)
 
 // Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp for demo code.
@@ -19,32 +19,58 @@
 
 /*
 
- Index
- - MISSION STATEMENT
- - END-USER GUIDE
- - PROGRAMMER GUIDE (read me!)
-   - Read first
-   - How to update to a newer version of Dear ImGui
-   - Getting started with integrating Dear ImGui in your code/engine
-   - Using gamepad/keyboard navigation controls [BETA]
- - API BREAKING CHANGES (read me when you update!)
- - ISSUES & TODO LIST
- - FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
-   - How can I tell whether to dispatch mouse/keyboard to imgui or to my application?
-   - How can I display an image? What is ImTextureID, how does it works?
-   - How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.
-   - How can I use my own math types instead of ImVec2/ImVec4? 
-   - How can I load a different font than the default?
-   - How can I easily use icons in my application?
-   - How can I load multiple fonts?
-   - How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
-   - How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
-   - I integrated Dear ImGui in my engine and the text or lines are blurry..
-   - I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
-   - How can I help?
- - ISSUES & TODO-LIST
- - CODE
+Index of this file:
 
+DOCUMENTATION
+- MISSION STATEMENT
+- END-USER GUIDE
+- PROGRAMMER GUIDE (read me!)
+  - Read first
+  - How to update to a newer version of Dear ImGui
+  - Getting started with integrating Dear ImGui in your code/engine
+  - Using gamepad/keyboard navigation controls [BETA]
+- API BREAKING CHANGES (read me when you update!)
+- FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
+  - How can I tell whether to dispatch mouse/keyboard to imgui or to my application?
+  - How can I display an image? What is ImTextureID, how does it works?
+  - How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.
+  - How can I use my own math types instead of ImVec2/ImVec4? 
+  - How can I load a different font than the default?
+  - How can I easily use icons in my application?
+  - How can I load multiple fonts?
+  - How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
+  - How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
+  - I integrated Dear ImGui in my engine and the text or lines are blurry..
+  - I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
+  - How can I help?
+
+CODE
+- Forward Declarations
+- Context and Memory Allocators
+- User facing structures (ImGuiStyle, ImGuiIO)
+- Helper/Utilities (ImXXX functions, Color functions)
+- ImGuiStorage
+- ImGuiTextFilter
+- ImGuiTextBuffer
+- ImGuiListClipper
+- Main Code (most of the code! lots of stuff, needs tidying up)
+- Tooltips
+- Popups
+- Navigation
+- Columns
+- Drag and Drop
+- Logging
+- Settings
+- Platform Dependent Helpers
+- Metrics/Debug window
+
+*/
+
+//-----------------------------------------------------------------------------
+// Documentation
+//-----------------------------------------------------------------------------
+
+/*
 
  MISSION STATEMENT
  =================
@@ -472,11 +498,6 @@
  - 2014/08/28 (1.09) - changed the behavior of IO.PixelCenterOffset following various rendering fixes
 
 
- ISSUES & TODO-LIST
- ==================
- See TODO.txt
-
-
  FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
  ======================================
 
@@ -824,7 +845,6 @@
 // Visual Studio warnings
 #ifdef _MSC_VER
 #pragma warning (disable: 4127) // condition expression is constant
-#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
 #pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
 #endif
 
@@ -852,24 +872,6 @@
 #endif
 #endif
 
-static const ImS32  IM_S32_MIN = INT_MIN;    // (-2147483647 - 1), (0x80000000);
-static const ImS32  IM_S32_MAX = INT_MAX;    // (2147483647), (0x7FFFFFFF)
-static const ImU32  IM_U32_MIN = 0;
-static const ImU32  IM_U32_MAX = UINT_MAX;   // (0xFFFFFFFF)
-#ifdef LLONG_MIN
-static const ImS64  IM_S64_MIN = LLONG_MIN;  // (-9223372036854775807ll - 1ll);
-static const ImS64  IM_S64_MAX = LLONG_MAX;  // (9223372036854775807ll);
-#else
-static const ImS64  IM_S64_MIN = -9223372036854775807LL - 1;
-static const ImS64  IM_S64_MAX = 9223372036854775807LL;
-#endif
-static const ImU64  IM_U64_MIN = 0;
-#ifdef ULLONG_MAX
-static const ImU64  IM_U64_MAX = ULLONG_MAX; // (0xFFFFFFFFFFFFFFFFull);
-#else
-static const ImU64  IM_U64_MAX = (2ULL * 9223372036854775807LL + 1);
-#endif
-
 // When using CTRL+TAB (or Gamepad Square+L/R) we delay the visual a little in order to reduce visual noise doing a fast switch.
 static const float NAV_WINDOWING_HIGHLIGHT_DELAY   = 0.20f; // Time before the highlight and screen dimming starts fading in
 static const float NAV_WINDOWING_LIST_APPEAR_DELAY = 0.15f; // Time before the window list starts to appear
@@ -884,7 +886,6 @@
 static void             SetWindowCollapsed(ImGuiWindow* window, bool collapsed, ImGuiCond cond);
 static void             FindHoveredWindow();
 static ImGuiWindow*     CreateNewWindow(const char* name, ImVec2 size, ImGuiWindowFlags flags);
-static ImGuiWindowSettings* CreateNewWindowSettings(const char* name);
 static void             CheckStacksSize(ImGuiWindow* window, bool write);
 static ImVec2           CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window, bool snap_on_edges);
 
@@ -894,13 +895,15 @@
 
 static ImRect           GetViewportRect();
 
-static bool             InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data);
-static int              InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end);
-static ImVec2           InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL, ImVec2* out_offset = NULL, bool stop_on_new_line = false);
+// Settings
+static void*            SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name);
+static void             SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line);
+static void             SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf);
 
-static inline int       DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format);
-static void             DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg_1, const void* arg_2);
-static bool             DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format);
+// Platform Dependents default implementation for IO functions
+static const char*      GetClipboardTextFn_DefaultImpl(void* user_data);
+static void             SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
+static void             ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
 
 namespace ImGui
 {
@@ -909,29 +912,20 @@
 static void             NavUpdate();
 static void             NavUpdateWindowing();
 static void             NavUpdateWindowingList();
+static void             NavUpdateMoveResult();
+static float            NavUpdatePageUpPageDown(int allowed_dir_flags);
+static inline void      NavUpdateAnyRequestFlag();
 static void             NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id);
+static ImVec2           NavCalcPreferredRefPos();
+static void             NavSaveLastChildNavWindow(ImGuiWindow* nav_window);
+static ImGuiWindow*     NavRestoreLastChildNavWindow(ImGuiWindow* window);
 
 static void             UpdateMouseInputs();
 static void             UpdateMouseWheel();
 static void             UpdateManualResize(ImGuiWindow* window, const ImVec2& size_auto_fit, int* border_held, int resize_grip_count, ImU32 resize_grip_col[4]);
-
-// Template widget behaviors
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool             DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power);
-
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool             SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb);
 }
 
 //-----------------------------------------------------------------------------
-// Platform dependent default implementations
-//-----------------------------------------------------------------------------
-
-static const char*      GetClipboardTextFn_DefaultImpl(void* user_data);
-static void             SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
-static void             ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
-
-//-----------------------------------------------------------------------------
 // Context and Memory Allocators
 //-----------------------------------------------------------------------------
 
@@ -961,7 +955,7 @@
 static void*    GImAllocatorUserData = NULL;
 
 //-----------------------------------------------------------------------------
-// User facing structures
+// User facing main structures
 //-----------------------------------------------------------------------------
 
 ImGuiStyle::ImGuiStyle()
@@ -1106,7 +1100,7 @@
 }
 
 //-----------------------------------------------------------------------------
-// HELPERS
+// HELPERS/UTILITIES
 //-----------------------------------------------------------------------------
 
 ImVec2 ImLineClosestPoint(const ImVec2& a, const ImVec2& b, const ImVec2& p)
@@ -1245,19 +1239,6 @@
     buf[p - p_start] = 0;                   // Zero terminate
 }
 
-template<typename TYPE>
-static const char* ImAtoi(const char* src, TYPE* output)
-{
-    int negative = 0;
-    if (*src == '-') { negative = 1; src++; }
-    if (*src == '+') { src++; }
-    TYPE v = 0;
-    while (*src >= '0' && *src <= '9')
-        v = (v * 10) + (*src++ - '0');
-    *output = negative ? -v : v;
-    return src;
-}
-
 // A) MSVC version appears to return -1 on overflow, whereas glibc appears to return total count (which may be >= buf_size).
 // Ideally we would test for only one of those limits at runtime depending on the behavior the vsnprintf(), but trying to deduct it at compile time sounds like a pandora can of worm.
 // B) When buf==NULL vsnprintf() will return the output size.
@@ -1338,7 +1319,7 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImText* helpers
+// HELPERS/UTILITIES (ImText* helpers)
 //-----------------------------------------------------------------------------
 
 // Convert UTF-8 to 32-bits character, process single character input.
@@ -1520,109 +1501,6 @@
     return bytes_count;
 }
 
-ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
-{
-    float s = 1.0f/255.0f;
-    return ImVec4(
-        ((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
-        ((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
-}
-
-ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
-{
-    ImU32 out;
-    out  = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
-    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
-    return out;
-}
-
-ImU32 ImGui::GetColorU32(ImGuiCol idx, float alpha_mul)
-{
-    ImGuiStyle& style = GImGui->Style;
-    ImVec4 c = style.Colors[idx];
-    c.w *= style.Alpha * alpha_mul;
-    return ColorConvertFloat4ToU32(c);
-}
-
-ImU32 ImGui::GetColorU32(const ImVec4& col)
-{
-    ImGuiStyle& style = GImGui->Style;
-    ImVec4 c = col;
-    c.w *= style.Alpha;
-    return ColorConvertFloat4ToU32(c);
-}
-
-const ImVec4& ImGui::GetStyleColorVec4(ImGuiCol idx)
-{
-    ImGuiStyle& style = GImGui->Style;
-    return style.Colors[idx];
-}
-
-ImU32 ImGui::GetColorU32(ImU32 col)
-{
-    float style_alpha = GImGui->Style.Alpha;
-    if (style_alpha >= 1.0f)
-        return col;
-    ImU32 a = (col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT;
-    a = (ImU32)(a * style_alpha); // We don't need to clamp 0..255 because Style.Alpha is in 0..1 range.
-    return (col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
-}
-
-// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
-// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
-void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
-{
-    float K = 0.f;
-    if (g < b)
-    {
-        ImSwap(g, b);
-        K = -1.f;
-    }
-    if (r < g)
-    {
-        ImSwap(r, g);
-        K = -2.f / 6.f - K;
-    }
-
-    const float chroma = r - (g < b ? g : b);
-    out_h = ImFabs(K + (g - b) / (6.f * chroma + 1e-20f));
-    out_s = chroma / (r + 1e-20f);
-    out_v = r;
-}
-
-// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
-// also http://en.wikipedia.org/wiki/HSL_and_HSV
-void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
-{
-    if (s == 0.0f)
-    {
-        // gray
-        out_r = out_g = out_b = v;
-        return;
-    }
-
-    h = ImFmod(h, 1.0f) / (60.0f/360.0f);
-    int   i = (int)h;
-    float f = h - (float)i;
-    float p = v * (1.0f - s);
-    float q = v * (1.0f - s * f);
-    float t = v * (1.0f - s * (1.0f - f));
-
-    switch (i)
-    {
-    case 0: out_r = v; out_g = t; out_b = p; break;
-    case 1: out_r = q; out_g = v; out_b = p; break;
-    case 2: out_r = p; out_g = v; out_b = t; break;
-    case 3: out_r = p; out_g = q; out_b = v; break;
-    case 4: out_r = t; out_g = p; out_b = v; break;
-    case 5: default: out_r = v; out_g = p; out_b = q; break;
-    }
-}
-
 FILE* ImFileOpen(const char* filename, const char* mode)
 {
 #if defined(_WIN32) && !defined(__CYGWIN__)
@@ -1682,6 +1560,113 @@
 }
 
 //-----------------------------------------------------------------------------
+// COLOR FUNCTIONS
+//-----------------------------------------------------------------------------
+
+ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
+{
+    float s = 1.0f/255.0f;
+    return ImVec4(
+        ((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
+        ((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
+}
+
+ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
+{
+    ImU32 out;
+    out  = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
+    out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
+    return out;
+}
+
+// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
+// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
+void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
+{
+    float K = 0.f;
+    if (g < b)
+    {
+        ImSwap(g, b);
+        K = -1.f;
+    }
+    if (r < g)
+    {
+        ImSwap(r, g);
+        K = -2.f / 6.f - K;
+    }
+
+    const float chroma = r - (g < b ? g : b);
+    out_h = ImFabs(K + (g - b) / (6.f * chroma + 1e-20f));
+    out_s = chroma / (r + 1e-20f);
+    out_v = r;
+}
+
+// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
+// also http://en.wikipedia.org/wiki/HSL_and_HSV
+void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
+{
+    if (s == 0.0f)
+    {
+        // gray
+        out_r = out_g = out_b = v;
+        return;
+    }
+
+    h = ImFmod(h, 1.0f) / (60.0f/360.0f);
+    int   i = (int)h;
+    float f = h - (float)i;
+    float p = v * (1.0f - s);
+    float q = v * (1.0f - s * f);
+    float t = v * (1.0f - s * (1.0f - f));
+
+    switch (i)
+    {
+    case 0: out_r = v; out_g = t; out_b = p; break;
+    case 1: out_r = q; out_g = v; out_b = p; break;
+    case 2: out_r = p; out_g = v; out_b = t; break;
+    case 3: out_r = p; out_g = q; out_b = v; break;
+    case 4: out_r = t; out_g = p; out_b = v; break;
+    case 5: default: out_r = v; out_g = p; out_b = q; break;
+    }
+}
+
+ImU32 ImGui::GetColorU32(ImGuiCol idx, float alpha_mul)
+{
+    ImGuiStyle& style = GImGui->Style;
+    ImVec4 c = style.Colors[idx];
+    c.w *= style.Alpha * alpha_mul;
+    return ColorConvertFloat4ToU32(c);
+}
+
+ImU32 ImGui::GetColorU32(const ImVec4& col)
+{
+    ImGuiStyle& style = GImGui->Style;
+    ImVec4 c = col;
+    c.w *= style.Alpha;
+    return ColorConvertFloat4ToU32(c);
+}
+
+const ImVec4& ImGui::GetStyleColorVec4(ImGuiCol idx)
+{
+    ImGuiStyle& style = GImGui->Style;
+    return style.Colors[idx];
+}
+
+ImU32 ImGui::GetColorU32(ImU32 col)
+{
+    float style_alpha = GImGui->Style.Alpha;
+    if (style_alpha >= 1.0f)
+        return col;
+    ImU32 a = (col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT;
+    a = (ImU32)(a * style_alpha); // We don't need to clamp 0..255 because Style.Alpha is in 0..1 range.
+    return (col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
+}
+
+//-----------------------------------------------------------------------------
 // ImGuiStorage
 // Helper: Key->value storage
 //-----------------------------------------------------------------------------
@@ -1983,51 +1968,6 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImGuiSimpleColumns (internal use only)
-//-----------------------------------------------------------------------------
-
-ImGuiMenuColumns::ImGuiMenuColumns()
-{
-    Count = 0;
-    Spacing = Width = NextWidth = 0.0f;
-    memset(Pos, 0, sizeof(Pos));
-    memset(NextWidths, 0, sizeof(NextWidths));
-}
-
-void ImGuiMenuColumns::Update(int count, float spacing, bool clear)
-{
-    IM_ASSERT(Count <= IM_ARRAYSIZE(Pos));
-    Count = count;
-    Width = NextWidth = 0.0f;
-    Spacing = spacing;
-    if (clear) memset(NextWidths, 0, sizeof(NextWidths));
-    for (int i = 0; i < Count; i++)
-    {
-        if (i > 0 && NextWidths[i] > 0.0f)
-            Width += Spacing;
-        Pos[i] = (float)(int)Width;
-        Width += NextWidths[i];
-        NextWidths[i] = 0.0f;
-    }
-}
-
-float ImGuiMenuColumns::DeclColumns(float w0, float w1, float w2) // not using va_arg because they promote float to double
-{
-    NextWidth = 0.0f;
-    NextWidths[0] = ImMax(NextWidths[0], w0);
-    NextWidths[1] = ImMax(NextWidths[1], w1);
-    NextWidths[2] = ImMax(NextWidths[2], w2);
-    for (int i = 0; i < 3; i++)
-        NextWidth += NextWidths[i] + ((i > 0 && NextWidths[i] > 0.0f) ? Spacing : 0.0f);
-    return ImMax(Width, NextWidth);
-}
-
-float ImGuiMenuColumns::CalcExtraSpace(float avail_w)
-{
-    return ImMax(0.0f, avail_w - Width);
-}
-
-//-----------------------------------------------------------------------------
 // ImGuiListClipper
 //-----------------------------------------------------------------------------
 
@@ -2112,9 +2052,11 @@
 }
 
 //-----------------------------------------------------------------------------
-// ImGuiWindow
+// MAIN CODE
+// (this category is still too large and badly ordered, needs some tidying up)
 //-----------------------------------------------------------------------------
 
+// ImGuiWindow is mostly a dumb struct. It merely has a constructor and a few helper methods
 ImGuiWindow::ImGuiWindow(ImGuiContext* context, const char* name)
     : DrawListInst(&context->DrawListSharedData)
 {
@@ -2222,10 +2164,6 @@
     return id;
 }
 
-//-----------------------------------------------------------------------------
-// Internal API exposed in imgui_internal.h
-//-----------------------------------------------------------------------------
-
 static void SetCurrentWindow(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -2393,285 +2331,6 @@
     ItemSize(bb.GetSize(), text_offset_y);
 }
 
-static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
-{
-    if (ImFabs(dx) > ImFabs(dy))
-        return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
-    return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
-}
-
-static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
-{
-    if (a1 < b0)
-        return a1 - b0;
-    if (b1 < a0)
-        return a0 - b1;
-    return 0.0f;
-}
-
-static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
-{
-    if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
-    {
-        r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
-        r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
-    }
-    else
-    {
-        r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
-        r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
-    }
-}
-
-// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
-static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    if (g.NavLayer != window->DC.NavLayerCurrent)
-        return false;
-
-    const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
-    g.NavScoringCount++;
-
-    // When entering through a NavFlattened border, we consider child window items as fully clipped for scoring
-    if (window->ParentWindow == g.NavWindow)
-    {
-        IM_ASSERT((window->Flags | g.NavWindow->Flags) & ImGuiWindowFlags_NavFlattened);
-        if (!window->ClipRect.Contains(cand))
-            return false;
-        cand.ClipWithFull(window->ClipRect); // This allows the scored item to not overlap other candidates in the parent window
-    }
-
-    // We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
-    // For example, this ensure that items in one column are not reached when moving vertically from items in another column.
-    NavClampRectToVisibleAreaForMoveDir(g.NavMoveClipDir, cand, window->ClipRect);
-
-    // Compute distance between boxes
-    // FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
-    float dbx = NavScoreItemDistInterval(cand.Min.x, cand.Max.x, curr.Min.x, curr.Max.x);
-    float dby = NavScoreItemDistInterval(ImLerp(cand.Min.y, cand.Max.y, 0.2f), ImLerp(cand.Min.y, cand.Max.y, 0.8f), ImLerp(curr.Min.y, curr.Max.y, 0.2f), ImLerp(curr.Min.y, curr.Max.y, 0.8f)); // Scale down on Y to keep using box-distance for vertically touching items
-    if (dby != 0.0f && dbx != 0.0f)
-       dbx = (dbx/1000.0f) + ((dbx > 0.0f) ? +1.0f : -1.0f);
-    float dist_box = ImFabs(dbx) + ImFabs(dby);
-
-    // Compute distance between centers (this is off by a factor of 2, but we only compare center distances with each other so it doesn't matter)
-    float dcx = (cand.Min.x + cand.Max.x) - (curr.Min.x + curr.Max.x);
-    float dcy = (cand.Min.y + cand.Max.y) - (curr.Min.y + curr.Max.y);
-    float dist_center = ImFabs(dcx) + ImFabs(dcy); // L1 metric (need this for our connectedness guarantee)
-
-    // Determine which quadrant of 'curr' our candidate item 'cand' lies in based on distance
-    ImGuiDir quadrant;
-    float dax = 0.0f, day = 0.0f, dist_axial = 0.0f;
-    if (dbx != 0.0f || dby != 0.0f)
-    {
-        // For non-overlapping boxes, use distance between boxes
-        dax = dbx;
-        day = dby;
-        dist_axial = dist_box;
-        quadrant = NavScoreItemGetQuadrant(dbx, dby);
-    }
-    else if (dcx != 0.0f || dcy != 0.0f)
-    {
-        // For overlapping boxes with different centers, use distance between centers
-        dax = dcx;
-        day = dcy;
-        dist_axial = dist_center;
-        quadrant = NavScoreItemGetQuadrant(dcx, dcy);
-    }
-    else
-    {
-        // Degenerate case: two overlapping buttons with same center, break ties arbitrarily (note that LastItemId here is really the _previous_ item order, but it doesn't matter)
-        quadrant = (window->DC.LastItemId < g.NavId) ? ImGuiDir_Left : ImGuiDir_Right;
-    }
-
-#if IMGUI_DEBUG_NAV_SCORING
-    char buf[128];
-    if (ImGui::IsMouseHoveringRect(cand.Min, cand.Max))
-    {
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "dbox (%.2f,%.2f->%.4f)\ndcen (%.2f,%.2f->%.4f)\nd (%.2f,%.2f->%.4f)\nnav %c, quadrant %c", dbx, dby, dist_box, dcx, dcy, dist_center, dax, day, dist_axial, "WENS"[g.NavMoveDir], "WENS"[quadrant]);
-        ImDrawList* draw_list = ImGui::GetOverlayDrawList();
-        draw_list->AddRect(curr.Min, curr.Max, IM_COL32(255,200,0,100));
-        draw_list->AddRect(cand.Min, cand.Max, IM_COL32(255,255,0,200));
-        draw_list->AddRectFilled(cand.Max-ImVec2(4,4), cand.Max+ImGui::CalcTextSize(buf)+ImVec2(4,4), IM_COL32(40,0,0,150));
-        draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Max, ~0U, buf);
-    }
-    else if (g.IO.KeyCtrl) // Hold to preview score in matching quadrant. Press C to rotate.
-    {
-        if (IsKeyPressedMap(ImGuiKey_C)) { g.NavMoveDirLast = (ImGuiDir)((g.NavMoveDirLast + 1) & 3); g.IO.KeysDownDuration[g.IO.KeyMap[ImGuiKey_C]] = 0.01f; }
-        if (quadrant == g.NavMoveDir)
-        {
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "%.0f/%.0f", dist_box, dist_center);
-            ImDrawList* draw_list = ImGui::GetOverlayDrawList();
-            draw_list->AddRectFilled(cand.Min, cand.Max, IM_COL32(255, 0, 0, 200));
-            draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Min, IM_COL32(255, 255, 255, 255), buf);
-        }
-    }
- #endif
-
-    // Is it in the quadrant we're interesting in moving to?
-    bool new_best = false;
-    if (quadrant == g.NavMoveDir)
-    {
-        // Does it beat the current best candidate?
-        if (dist_box < result->DistBox)
-        {
-            result->DistBox = dist_box;
-            result->DistCenter = dist_center;
-            return true;
-        }
-        if (dist_box == result->DistBox)
-        {
-            // Try using distance between center points to break ties
-            if (dist_center < result->DistCenter)
-            {
-                result->DistCenter = dist_center;
-                new_best = true;
-            }
-            else if (dist_center == result->DistCenter)
-            {
-                // Still tied! we need to be extra-careful to make sure everything gets linked properly. We consistently break ties by symbolically moving "later" items
-                // (with higher index) to the right/downwards by an infinitesimal amount since we the current "best" button already (so it must have a lower index),
-                // this is fairly easy. This rule ensures that all buttons with dx==dy==0 will end up being linked in order of appearance along the x axis.
-                if (((g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down) ? dby : dbx) < 0.0f) // moving bj to the right/down decreases distance
-                    new_best = true;
-            }
-        }
-    }
-
-    // Axial check: if 'curr' has no link at all in some direction and 'cand' lies roughly in that direction, add a tentative link. This will only be kept if no "real" matches
-    // are found, so it only augments the graph produced by the above method using extra links. (important, since it doesn't guarantee strong connectedness)
-    // This is just to avoid buttons having no links in a particular direction when there's a suitable neighbor. you get good graphs without this too.
-    // 2017/09/29: FIXME: This now currently only enabled inside menu bars, ideally we'd disable it everywhere. Menus in particular need to catch failure. For general navigation it feels awkward.
-    // Disabling it may lead to disconnected graphs when nodes are very spaced out on different axis. Perhaps consider offering this as an option?
-    if (result->DistBox == FLT_MAX && dist_axial < result->DistAxial)  // Check axial match
-        if (g.NavLayer == 1 && !(g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
-            if ((g.NavMoveDir == ImGuiDir_Left && dax < 0.0f) || (g.NavMoveDir == ImGuiDir_Right && dax > 0.0f) || (g.NavMoveDir == ImGuiDir_Up && day < 0.0f) || (g.NavMoveDir == ImGuiDir_Down && day > 0.0f))
-            {
-                result->DistAxial = dist_axial;
-                new_best = true;
-            }
-
-    return new_best;
-}
-
-static void NavSaveLastChildNavWindow(ImGuiWindow* child_window)
-{
-    ImGuiWindow* parent_window = child_window;
-    while (parent_window && (parent_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (parent_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
-        parent_window = parent_window->ParentWindow;
-    if (parent_window && parent_window != child_window)
-        parent_window->NavLastChildNavWindow = child_window;
-}
-
-// Call when we are expected to land on Layer 0 after FocusWindow()
-static ImGuiWindow* NavRestoreLastChildNavWindow(ImGuiWindow* window)
-{
-    return window->NavLastChildNavWindow ? window->NavLastChildNavWindow : window;
-}
-
-static void NavRestoreLayer(int layer)
-{
-    ImGuiContext& g = *GImGui;
-    g.NavLayer = layer;
-    if (layer == 0)
-        g.NavWindow = NavRestoreLastChildNavWindow(g.NavWindow);
-    if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
-        ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
-    else
-        ImGui::NavInitWindow(g.NavWindow, true);
-}
-
-static inline void NavUpdateAnyRequestFlag()
-{
-    ImGuiContext& g = *GImGui;
-    g.NavAnyRequest = g.NavMoveRequest || g.NavInitRequest || (IMGUI_DEBUG_NAV_SCORING && g.NavWindow != NULL);
-    if (g.NavAnyRequest)
-        IM_ASSERT(g.NavWindow != NULL);
-}
-
-bool ImGui::NavMoveRequestButNoResultYet()
-{
-    ImGuiContext& g = *GImGui;
-    return g.NavMoveRequest && g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0;
-}
-
-void ImGui::NavMoveRequestCancel()
-{
-    ImGuiContext& g = *GImGui;
-    g.NavMoveRequest = false;
-    NavUpdateAnyRequestFlag();
-}
-
-// We get there when either NavId == id, or when g.NavAnyRequest is set (which is updated by NavUpdateAnyRequestFlag above)
-static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    //if (!g.IO.NavActive)  // [2017/10/06] Removed this possibly redundant test but I am not sure of all the side-effects yet. Some of the feature here will need to work regardless of using a _NoNavInputs flag.
-    //    return;
-
-    const ImGuiItemFlags item_flags = window->DC.ItemFlags;
-    const ImRect nav_bb_rel(nav_bb.Min - window->Pos, nav_bb.Max - window->Pos);
-
-    // Process Init Request
-    if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
-    {
-        // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
-        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
-        {
-            g.NavInitResultId = id;
-            g.NavInitResultRectRel = nav_bb_rel;
-        }
-        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
-        {
-            g.NavInitRequest = false; // Found a match, clear request
-            NavUpdateAnyRequestFlag();
-        }
-    }
-
-    // Process Move Request (scoring for navigation)
-    // FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
-    if ((g.NavId != id || (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AllowCurrentNavId)) && !(item_flags & ImGuiItemFlags_NoNav))
-    {
-        ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
-#if IMGUI_DEBUG_NAV_SCORING
-        // [DEBUG] Score all items in NavWindow at all times
-        if (!g.NavMoveRequest)
-            g.NavMoveDir = g.NavMoveDirLast;
-        bool new_best = NavScoreItem(result, nav_bb) && g.NavMoveRequest;
-#else
-        bool new_best = g.NavMoveRequest && NavScoreItem(result, nav_bb);
-#endif
-        if (new_best)
-        {
-            result->ID = id;
-            result->Window = window;
-            result->RectRel = nav_bb_rel;
-        }
-
-        const float VISIBLE_RATIO = 0.70f;
-        if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
-            if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
-                if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
-                {
-                    result = &g.NavMoveResultLocalVisibleSet;
-                    result->ID = id;
-                    result->Window = window;
-                    result->RectRel = nav_bb_rel;
-                }
-    }
-
-    // Update window-relative bounding box of navigated item
-    if (g.NavId == id)
-    {
-        g.NavWindow = window;                                           // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
-        g.NavLayer = window->DC.NavLayerCurrent;
-        g.NavIdIsAlive = true;
-        g.NavIdTabCounter = window->FocusIdxTabCounter;
-        window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel;    // Store item bounding box (relative to window position)
-    }
-}
-
 // Declare item bounding box for clipping and interaction.
 // Note that the size can be different than the one provided to ItemSize(). Typically, widgets that spread over available surface
 // declare their minimum size requirement to ItemSize() and then use a larger region for drawing/interaction, which is passed to ItemAdd().
@@ -2972,662 +2631,6 @@
     return &GImGui->DrawListSharedData;
 }
 
-// This needs to be called before we submit any widget (aka in or before Begin)
-void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(window == g.NavWindow);
-    bool init_for_nav = false;
-    if (!(window->Flags & ImGuiWindowFlags_NoNavInputs))
-        if (!(window->Flags & ImGuiWindowFlags_ChildWindow) || (window->Flags & ImGuiWindowFlags_Popup) || (window->NavLastIds[0] == 0) || force_reinit)
-            init_for_nav = true;
-    if (init_for_nav)
-    {
-        SetNavID(0, g.NavLayer);
-        g.NavInitRequest = true;
-        g.NavInitRequestFromMove = false;
-        g.NavInitResultId = 0;
-        g.NavInitResultRectRel = ImRect();
-        NavUpdateAnyRequestFlag();
-    }
-    else
-    {
-        g.NavId = window->NavLastIds[0];
-    }
-}
-
-static ImVec2 NavCalcPreferredRefPos()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow)
-        return ImFloor(g.IO.MousePos);
-
-    // When navigation is active and mouse is disabled, decide on an arbitrary position around the bottom left of the currently navigated item
-    const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
-    ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x*4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
-    ImRect visible_rect = GetViewportRect();
-    return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
-}
-
-static int FindWindowIndex(ImGuiWindow* window) // FIXME-OPT O(N)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = g.Windows.Size-1; i >= 0; i--)
-        if (g.Windows[i] == window)
-            return i;
-    return -1;
-}
-
-static ImGuiWindow* FindWindowNavFocusable(int i_start, int i_stop, int dir) // FIXME-OPT O(N)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = i_start; i >= 0 && i < g.Windows.Size && i != i_stop; i += dir)
-        if (ImGui::IsWindowNavFocusable(g.Windows[i]))
-            return g.Windows[i];
-    return NULL;
-}
-
-float ImGui::GetNavInputAmount(ImGuiNavInput n, ImGuiInputReadMode mode)
-{
-    ImGuiContext& g = *GImGui;
-    if (mode == ImGuiInputReadMode_Down)
-        return g.IO.NavInputs[n];                         // Instant, read analog input (0.0f..1.0f, as provided by user)
-
-    const float t = g.IO.NavInputsDownDuration[n];
-    if (t < 0.0f && mode == ImGuiInputReadMode_Released)  // Return 1.0f when just released, no repeat, ignore analog input.
-        return (g.IO.NavInputsDownDurationPrev[n] >= 0.0f ? 1.0f : 0.0f);
-    if (t < 0.0f)
-        return 0.0f;
-    if (mode == ImGuiInputReadMode_Pressed)               // Return 1.0f when just pressed, no repeat, ignore analog input.
-        return (t == 0.0f) ? 1.0f : 0.0f;
-    if (mode == ImGuiInputReadMode_Repeat)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
-    if (mode == ImGuiInputReadMode_RepeatSlow)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 1.00f, g.IO.KeyRepeatRate * 2.00f);
-    if (mode == ImGuiInputReadMode_RepeatFast)
-        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.30f);
-    return 0.0f;
-}
-
-ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor, float fast_factor)
-{
-    ImVec2 delta(0.0f, 0.0f);
-    if (dir_sources & ImGuiNavDirSourceFlags_Keyboard)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_KeyRight_, mode)   - GetNavInputAmount(ImGuiNavInput_KeyLeft_,   mode), GetNavInputAmount(ImGuiNavInput_KeyDown_,   mode) - GetNavInputAmount(ImGuiNavInput_KeyUp_,   mode));
-    if (dir_sources & ImGuiNavDirSourceFlags_PadDPad)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_DpadRight, mode)   - GetNavInputAmount(ImGuiNavInput_DpadLeft,   mode), GetNavInputAmount(ImGuiNavInput_DpadDown,   mode) - GetNavInputAmount(ImGuiNavInput_DpadUp,   mode));
-    if (dir_sources & ImGuiNavDirSourceFlags_PadLStick)
-        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_LStickRight, mode) - GetNavInputAmount(ImGuiNavInput_LStickLeft, mode), GetNavInputAmount(ImGuiNavInput_LStickDown, mode) - GetNavInputAmount(ImGuiNavInput_LStickUp, mode));
-    if (slow_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakSlow))
-        delta *= slow_factor;
-    if (fast_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakFast))
-        delta *= fast_factor;
-    return delta;
-}
-
-static void NavUpdateWindowingHighlightWindow(int focus_change_dir)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavWindowingTarget);
-    if (g.NavWindowingTarget->Flags & ImGuiWindowFlags_Modal)
-        return;
-
-    const int i_current = FindWindowIndex(g.NavWindowingTarget);
-    ImGuiWindow* window_target = FindWindowNavFocusable(i_current + focus_change_dir, -INT_MAX, focus_change_dir);
-    if (!window_target)
-        window_target = FindWindowNavFocusable((focus_change_dir < 0) ? (g.Windows.Size - 1) : 0, i_current, focus_change_dir);
-    if (window_target) // Don't reset windowing target if there's a single window in the list
-        g.NavWindowingTarget = g.NavWindowingTargetAnim = window_target;
-    g.NavWindowingToggleLayer = false;
-}
-
-// Window management mode (hold to: change focus/move/resize, tap to: toggle menu layer)
-static void ImGui::NavUpdateWindowing()
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* apply_focus_window = NULL;
-    bool apply_toggle_layer = false;
-
-    ImGuiWindow* modal_window = GetFrontMostPopupModal();
-    if (modal_window != NULL)
-    {
-        g.NavWindowingTarget = NULL;
-        return;
-    }
-
-    // Fade out
-    if (g.NavWindowingTargetAnim && g.NavWindowingTarget == NULL)
-    {
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha - g.IO.DeltaTime * 10.0f, 0.0f);
-        if (g.DimBgRatio <= 0.0f && g.NavWindowingHighlightAlpha <= 0.0f)
-            g.NavWindowingTargetAnim = NULL;
-    }
-
-    // Start CTRL-TAB or Square+L/R window selection
-    bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
-    bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
-    if (start_windowing_with_gamepad || start_windowing_with_keyboard)
-        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.Windows.Size - 1, -INT_MAX, -1))
-        {
-            g.NavWindowingTarget = g.NavWindowingTargetAnim = window;
-            g.NavWindowingTimer = g.NavWindowingHighlightAlpha = 0.0f;
-            g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
-            g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
-        }
-
-    // Gamepad update
-    g.NavWindowingTimer += g.IO.DeltaTime;
-    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavGamepad)
-    {
-        // Highlight only appears after a brief time holding the button, so that a fast tap on PadMenu (to toggle NavLayer) doesn't add visual noise
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f));
-
-        // Select window to focus
-        const int focus_change_dir = (int)IsNavInputPressed(ImGuiNavInput_FocusPrev, ImGuiInputReadMode_RepeatSlow) - (int)IsNavInputPressed(ImGuiNavInput_FocusNext, ImGuiInputReadMode_RepeatSlow);
-        if (focus_change_dir != 0)
-        {
-            NavUpdateWindowingHighlightWindow(focus_change_dir);
-            g.NavWindowingHighlightAlpha = 1.0f;
-        }
-
-        // Single press toggles NavLayer, long press with L/R apply actual focus on release (until then the window was merely rendered front-most)
-        if (!IsNavInputDown(ImGuiNavInput_Menu))
-        {
-            g.NavWindowingToggleLayer &= (g.NavWindowingHighlightAlpha < 1.0f); // Once button was held long enough we don't consider it a tap-to-toggle-layer press anymore.
-            if (g.NavWindowingToggleLayer && g.NavWindow)
-                apply_toggle_layer = true;
-            else if (!g.NavWindowingToggleLayer)
-                apply_focus_window = g.NavWindowingTarget;
-            g.NavWindowingTarget = NULL;
-        }
-    }
-
-    // Keyboard: Focus
-    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavKeyboard)
-    {
-        // Visuals only appears after a brief time after pressing TAB the first time, so that a fast CTRL+TAB doesn't add visual noise
-        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f)); // 1.0f
-        if (IsKeyPressedMap(ImGuiKey_Tab, true))
-            NavUpdateWindowingHighlightWindow(g.IO.KeyShift ? +1 : -1);
-        if (!g.IO.KeyCtrl)
-            apply_focus_window = g.NavWindowingTarget;
-    }
-
-    // Keyboard: Press and Release ALT to toggle menu layer
-    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
-    if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && IsNavInputPressed(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))
-        if (IsMousePosValid(&g.IO.MousePos) == IsMousePosValid(&g.IO.MousePosPrev))
-            apply_toggle_layer = true;
-
-    // Move window
-    if (g.NavWindowingTarget && !(g.NavWindowingTarget->Flags & ImGuiWindowFlags_NoMove))
-    {
-        ImVec2 move_delta;
-        if (g.NavInputSource == ImGuiInputSource_NavKeyboard && !g.IO.KeyShift)
-            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard, ImGuiInputReadMode_Down);
-        if (g.NavInputSource == ImGuiInputSource_NavGamepad)
-            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down);
-        if (move_delta.x != 0.0f || move_delta.y != 0.0f)
-        {
-            const float NAV_MOVE_SPEED = 800.0f;
-            const float move_speed = ImFloor(NAV_MOVE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); // FIXME: Doesn't code variable framerate very well
-            g.NavWindowingTarget->RootWindow->Pos += move_delta * move_speed;
-            g.NavDisableMouseHover = true;
-            MarkIniSettingsDirty(g.NavWindowingTarget);
-        }
-    }
-
-    // Apply final focus
-    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
-    {
-        g.NavDisableHighlight = false;
-        g.NavDisableMouseHover = true;
-        apply_focus_window = NavRestoreLastChildNavWindow(apply_focus_window);
-        ClosePopupsOverWindow(apply_focus_window);
-        FocusWindow(apply_focus_window);
-        if (apply_focus_window->NavLastIds[0] == 0)
-            NavInitWindow(apply_focus_window, false);
-
-        // If the window only has a menu layer, select it directly
-        if (apply_focus_window->DC.NavLayerActiveMask == (1 << 1))
-            g.NavLayer = 1;
-    }
-    if (apply_focus_window)
-        g.NavWindowingTarget = NULL;
-
-    // Apply menu/layer toggle
-    if (apply_toggle_layer && g.NavWindow)
-    {
-        // Move to parent menu if necessary
-        ImGuiWindow* new_nav_window = g.NavWindow;
-        while ((new_nav_window->DC.NavLayerActiveMask & (1 << 1)) == 0 && (new_nav_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (new_nav_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
-            new_nav_window = new_nav_window->ParentWindow;
-
-        if (new_nav_window != g.NavWindow)
-        {
-            ImGuiWindow* old_nav_window = g.NavWindow;
-            FocusWindow(new_nav_window);
-            new_nav_window->NavLastChildNavWindow = old_nav_window;
-        }
-        g.NavDisableHighlight = false;
-        g.NavDisableMouseHover = true;
-        NavRestoreLayer((g.NavWindow->DC.NavLayerActiveMask & (1 << 1)) ? (g.NavLayer ^ 1) : 0);
-    }
-}
-
-// Window has already passed the IsWindowNavFocusable()
-static const char* GetFallbackWindowNameForWindowingList(ImGuiWindow* window)
-{
-    if (window->Flags & ImGuiWindowFlags_Popup)
-        return "(Popup)";
-    if ((window->Flags & ImGuiWindowFlags_MenuBar) && strcmp(window->Name, "##MainMenuBar") == 0)
-        return "(Main menu bar)";
-    return "(Untitled)";
-}
-
-// Overlay displayed when using CTRL+TAB. Called by EndFrame().
-void ImGui::NavUpdateWindowingList()
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavWindowingTarget != NULL);
-
-    if (g.NavWindowingTimer < NAV_WINDOWING_LIST_APPEAR_DELAY)
-        return;
-
-    if (g.NavWindowingList == NULL)
-        g.NavWindowingList = FindWindowByName("###NavWindowingList");
-    SetNextWindowSizeConstraints(ImVec2(g.IO.DisplaySize.x * 0.20f, g.IO.DisplaySize.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
-    SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
-    PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
-    Begin("###NavWindowingList", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings);
-    for (int n = g.Windows.Size - 1; n >= 0; n--)
-    {
-        ImGuiWindow* window = g.Windows[n];
-        if (!IsWindowNavFocusable(window))
-            continue;
-        const char* label = window->Name;
-        if (label == FindRenderedTextEnd(label))
-            label = GetFallbackWindowNameForWindowingList(window);
-        Selectable(label, g.NavWindowingTarget == window);
-    }
-    End();
-    PopStyleVar();
-}
-
-// Scroll to keep newly navigated item fully into view
-// NB: We modify rect_rel by the amount we scrolled for, so it is immediately updated.
-static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item_rect)
-{
-    ImRect window_rect(window->InnerMainRect.Min - ImVec2(1, 1), window->InnerMainRect.Max + ImVec2(1, 1));
-    //g.OverlayDrawList.AddRect(window_rect.Min, window_rect.Max, IM_COL32_WHITE); // [DEBUG]
-    if (window_rect.Contains(item_rect))
-        return;
-
-    ImGuiContext& g = *GImGui;
-    if (window->ScrollbarX && item_rect.Min.x < window_rect.Min.x)
-    {
-        window->ScrollTarget.x = item_rect.Min.x - window->Pos.x + window->Scroll.x - g.Style.ItemSpacing.x;
-        window->ScrollTargetCenterRatio.x = 0.0f;
-    }
-    else if (window->ScrollbarX && item_rect.Max.x >= window_rect.Max.x)
-    {
-        window->ScrollTarget.x = item_rect.Max.x - window->Pos.x + window->Scroll.x + g.Style.ItemSpacing.x;
-        window->ScrollTargetCenterRatio.x = 1.0f;
-    }
-    if (item_rect.Min.y < window_rect.Min.y)
-    {
-        window->ScrollTarget.y = item_rect.Min.y - window->Pos.y + window->Scroll.y - g.Style.ItemSpacing.y;
-        window->ScrollTargetCenterRatio.y = 0.0f;
-    }
-    else if (item_rect.Max.y >= window_rect.Max.y)
-    {
-        window->ScrollTarget.y = item_rect.Max.y - window->Pos.y + window->Scroll.y + g.Style.ItemSpacing.y;
-        window->ScrollTargetCenterRatio.y = 1.0f;
-    }
-}
-
-static void ImGui::NavUpdate()
-{
-    ImGuiContext& g = *GImGui;
-    g.IO.WantSetMousePos = false;
-
-#if 0
-    if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
-#endif
-
-    bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
-    bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
-
-    // Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
-    if (nav_gamepad_active)
-        if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
-            g.NavInputSource = ImGuiInputSource_NavGamepad;
-
-    // Update Keyboard->Nav inputs mapping
-    if (nav_keyboard_active)
-    {
-        #define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
-        NAV_MAP_KEY(ImGuiKey_Space,     ImGuiNavInput_Activate );
-        NAV_MAP_KEY(ImGuiKey_Enter,     ImGuiNavInput_Input    );
-        NAV_MAP_KEY(ImGuiKey_Escape,    ImGuiNavInput_Cancel   );
-        NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
-        NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
-        NAV_MAP_KEY(ImGuiKey_UpArrow,   ImGuiNavInput_KeyUp_   );
-        NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
-        if (g.IO.KeyCtrl)   g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
-        if (g.IO.KeyShift)  g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
-        if (g.IO.KeyAlt)    g.IO.NavInputs[ImGuiNavInput_KeyMenu_]  = 1.0f;
-        #undef NAV_MAP_KEY
-    }
-
-    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
-    for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
-        g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
-
-    // Process navigation init request (select first/default focus)
-    if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
-    {
-        // Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
-        IM_ASSERT(g.NavWindow);
-        if (g.NavInitRequestFromMove)
-            SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
-        else
-            SetNavID(g.NavInitResultId, g.NavLayer);
-        g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
-    }
-    g.NavInitRequest = false;
-    g.NavInitRequestFromMove = false;
-    g.NavInitResultId = 0;
-    g.NavJustMovedToId = 0;
-
-    // Process navigation move request
-    if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
-    {
-        // Select which result to use
-        ImGuiNavMoveResult* result = (g.NavMoveResultLocal.ID != 0) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
-
-        // PageUp/PageDown behavior first jumps to the bottom/top mostly visible item, _otherwise_ use the result from the previous/next page.
-        if (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet)
-            if (g.NavMoveResultLocalVisibleSet.ID != 0 && g.NavMoveResultLocalVisibleSet.ID != g.NavId)
-                result = &g.NavMoveResultLocalVisibleSet;
-
-        // Maybe entering a flattened child from the outside? In this case solve the tie using the regular scoring rules.
-        if (result != &g.NavMoveResultOther && g.NavMoveResultOther.ID != 0 && g.NavMoveResultOther.Window->ParentWindow == g.NavWindow)
-            if ((g.NavMoveResultOther.DistBox < result->DistBox) || (g.NavMoveResultOther.DistBox == result->DistBox && g.NavMoveResultOther.DistCenter < result->DistCenter))
-                result = &g.NavMoveResultOther;
-        IM_ASSERT(g.NavWindow && result->Window);
-
-        // Scroll to keep newly navigated item fully into view.
-        if (g.NavLayer == 0)
-        {
-            ImRect rect_abs = ImRect(result->RectRel.Min + result->Window->Pos, result->RectRel.Max + result->Window->Pos);
-            NavScrollToBringItemIntoView(result->Window, rect_abs);
-
-            // Estimate upcoming scroll so we can offset our result position so mouse position can be applied immediately after in NavUpdate()
-            ImVec2 next_scroll = CalcNextScrollFromScrollTargetAndClamp(result->Window, false);
-            ImVec2 delta_scroll = result->Window->Scroll - next_scroll;
-            result->RectRel.Translate(delta_scroll);
-
-            // Also scroll parent window to keep us into view if necessary (we could/should technically recurse back the whole the parent hierarchy).
-            if (result->Window->Flags & ImGuiWindowFlags_ChildWindow)
-                NavScrollToBringItemIntoView(result->Window->ParentWindow, ImRect(rect_abs.Min + delta_scroll, rect_abs.Max + delta_scroll));
-        }
-
-        // Apply result from previous frame navigation directional move request
-        ClearActiveID();
-        g.NavWindow = result->Window;
-        SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
-        g.NavJustMovedToId = result->ID;
-        g.NavMoveFromClampedRefRect = false;
-    }
-
-    // When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
-    if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
-    {
-        IM_ASSERT(g.NavMoveRequest);
-        if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
-            g.NavDisableHighlight = false;
-        g.NavMoveRequestForward = ImGuiNavForward_None;
-    }
-
-    // Apply application mouse position movement, after we had a chance to process move request result.
-    if (g.NavMousePosDirty && g.NavIdIsAlive)
-    {
-        // Set mouse position given our knowledge of the navigated item position from last frame
-        if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
-        {
-            if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
-            {
-                g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
-                g.IO.WantSetMousePos = true;
-            }
-        }
-        g.NavMousePosDirty = false;
-    }
-    g.NavIdIsAlive = false;
-    g.NavJustTabbedId = 0;
-    IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
-
-    // Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
-    if (g.NavWindow)
-        NavSaveLastChildNavWindow(g.NavWindow);
-    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
-        g.NavWindow->NavLastChildNavWindow = NULL;
-
-    NavUpdateWindowing();
-
-    // Set output flags for user application
-    g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
-    g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
-
-    // Process NavCancel input (to close a popup, get back to parent, clear focus)
-    if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
-    {
-        if (g.ActiveId != 0)
-        {
-            ClearActiveID();
-        }
-        else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
-        {
-            // Exit child window
-            ImGuiWindow* child_window = g.NavWindow;
-            ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
-            IM_ASSERT(child_window->ChildId != 0);
-            FocusWindow(parent_window);
-            SetNavID(child_window->ChildId, 0);
-            g.NavIdIsAlive = false;
-            if (g.NavDisableMouseHover)
-                g.NavMousePosDirty = true;
-        }
-        else if (g.OpenPopupStack.Size > 0)
-        {
-            // Close open popup/menu
-            if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
-                ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-        }
-        else if (g.NavLayer != 0)
-        {
-            // Leave the "menu" layer
-            NavRestoreLayer(0);
-        }
-        else
-        {
-            // Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
-            if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
-                g.NavWindow->NavLastIds[0] = 0;
-            g.NavId = 0;
-        }
-    }
-
-    // Process manual activation request
-    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
-    if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-    {
-        bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
-        bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
-        if (g.ActiveId == 0 && activate_pressed)
-            g.NavActivateId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
-            g.NavActivateDownId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
-            g.NavActivatePressedId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
-            g.NavInputId = g.NavId;
-    }
-    if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-        g.NavDisableHighlight = true;
-    if (g.NavActivateId != 0)
-        IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
-    g.NavMoveRequest = false;
-
-    // Process programmatic activation request
-    if (g.NavNextActivateId != 0)
-        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
-    g.NavNextActivateId = 0;
-
-    // Initiate directional inputs request
-    const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
-    if (g.NavMoveRequestForward == ImGuiNavForward_None)
-    {
-        g.NavMoveDir = ImGuiDir_None;
-        g.NavMoveRequestFlags = 0;
-        if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
-        {
-            if ((allowed_dir_flags & (1<<ImGuiDir_Left))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Up))    && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp,   ImGuiNavInput_KeyUp_,   ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
-            if ((allowed_dir_flags & (1<<ImGuiDir_Down))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
-        }
-        g.NavMoveClipDir = g.NavMoveDir;
-    }
-    else
-    {
-        // Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
-        // (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
-        IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
-        IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
-        g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
-    }
-
-    // PageUp/PageDown scroll
-    float nav_scoring_rect_offset_y = 0.0f;
-    if (nav_keyboard_active && g.NavMoveDir == ImGuiDir_None && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget && g.NavLayer == 0)
-    {
-        ImGuiWindow* window = g.NavWindow;
-        bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && (allowed_dir_flags & (1 << ImGuiDir_Up));
-        bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && (allowed_dir_flags & (1 << ImGuiDir_Down));
-        if ((page_up_held && !page_down_held) || (page_down_held && !page_up_held))
-        {
-            if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
-            {
-                // Fallback manual-scroll when window has no navigable item
-                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
-                    SetWindowScrollY(window, window->Scroll.y - window->InnerClipRect.GetHeight());
-                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
-                    SetWindowScrollY(window, window->Scroll.y + window->InnerClipRect.GetHeight());
-            }
-            else
-            {
-                const ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
-                const float page_offset_y = ImMax(0.0f, window->InnerClipRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
-                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
-                {
-                    nav_scoring_rect_offset_y = -page_offset_y;
-                    g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
-                    g.NavMoveClipDir = ImGuiDir_Up;
-                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
-                }
-                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
-                {
-                    nav_scoring_rect_offset_y = +page_offset_y;
-                    g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
-                    g.NavMoveClipDir = ImGuiDir_Down;
-                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
-                }
-            }
-        }
-    }
-
-    if (g.NavMoveDir != ImGuiDir_None)
-    {
-        g.NavMoveRequest = true;
-        g.NavMoveDirLast = g.NavMoveDir;
-    }
-
-    // If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
-    if (g.NavMoveRequest && g.NavId == 0)
-    {
-        g.NavInitRequest = g.NavInitRequestFromMove = true;
-        g.NavInitResultId = 0;
-        g.NavDisableHighlight = false;
-    }
-
-    NavUpdateAnyRequestFlag();
-
-    // Scrolling
-    if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
-    {
-        // *Fallback* manual-scroll with Nav directional keys when window has no navigable item
-        ImGuiWindow* window = g.NavWindow;
-        const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
-        if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
-        {
-            if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
-                SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
-            if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
-                SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
-        }
-
-        // *Normal* Manual scroll with NavScrollXXX keys
-        // Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
-        ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
-        if (scroll_dir.x != 0.0f && window->ScrollbarX)
-        {
-            SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
-            g.NavMoveFromClampedRefRect = true;
-        }
-        if (scroll_dir.y != 0.0f)
-        {
-            SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
-            g.NavMoveFromClampedRefRect = true;
-        }
-    }
-
-    // Reset search results
-    g.NavMoveResultLocal.Clear();
-    g.NavMoveResultLocalVisibleSet.Clear();
-    g.NavMoveResultOther.Clear();
-
-    // When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
-    if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
-    {
-        ImGuiWindow* window = g.NavWindow;
-        ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
-        if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
-        {
-            float pad = window->CalcFontSize() * 0.5f;
-            window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
-            window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
-            g.NavId = 0;
-        }
-        g.NavMoveFromClampedRefRect = false;
-    }
-
-    // For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
-    ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
-    g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
-    g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
-    g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
-    g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
-    IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
-    //g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
-    g.NavScoringCount = 0;
-#if IMGUI_DEBUG_NAV_RECTS
-    if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
-    if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
-#endif
-}
-
 void ImGui::StartMouseMovingWindow(ImGuiWindow* window)
 {
     // Set ActiveId even if the _NoMove flag is set. Without it, dragging away from a window with _NoMove would activate hover on other windows.
@@ -4010,65 +3013,6 @@
     Begin("Debug##Default");
 }
 
-static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
-{
-    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHash(name, 0));
-    if (!settings)
-        settings = CreateNewWindowSettings(name);
-    return (void*)settings;
-}
-
-static void SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
-{
-    ImGuiWindowSettings* settings = (ImGuiWindowSettings*)entry;
-    float x, y;
-    int i;
-    if (sscanf(line, "Pos=%f,%f", &x, &y) == 2)         settings->Pos = ImVec2(x, y);
-    else if (sscanf(line, "Size=%f,%f", &x, &y) == 2)   settings->Size = ImMax(ImVec2(x, y), GImGui->Style.WindowMinSize);
-    else if (sscanf(line, "Collapsed=%d", &i) == 1)     settings->Collapsed = (i != 0);
-}
-
-static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
-{
-    // Gather data from windows that were active during this session
-    ImGuiContext& g = *imgui_ctx;
-    for (int i = 0; i != g.Windows.Size; i++)
-    {
-        ImGuiWindow* window = g.Windows[i];
-        if (window->Flags & ImGuiWindowFlags_NoSavedSettings)
-            continue;
-
-        ImGuiWindowSettings* settings = (window->SettingsIdx != -1) ? &g.SettingsWindows[window->SettingsIdx] : ImGui::FindWindowSettings(window->ID);
-        if (!settings)
-        {
-            settings = CreateNewWindowSettings(window->Name);
-            window->SettingsIdx = g.SettingsWindows.index_from_pointer(settings);
-        }
-        IM_ASSERT(settings->ID == window->ID);
-        settings->Pos = window->Pos;
-        settings->Size = window->SizeFull;
-        settings->Collapsed = window->Collapsed;
-    }
-
-    // Write a buffer
-    // If a window wasn't opened in this session we preserve its settings
-    buf->reserve(buf->size() + g.SettingsWindows.Size * 96); // ballpark reserve
-    for (int i = 0; i != g.SettingsWindows.Size; i++)
-    {
-        const ImGuiWindowSettings* settings = &g.SettingsWindows[i];
-        if (settings->Pos.x == FLT_MAX)
-            continue;
-        const char* name = settings->Name;
-        if (const char* p = strstr(name, "###"))  // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID()
-            name = p;
-        buf->appendf("[%s][%s]\n", handler->TypeName, name);
-        buf->appendf("Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
-        buf->appendf("Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
-        buf->appendf("Collapsed=%d\n", settings->Collapsed);
-        buf->appendf("\n");
-    }
-}
-
 void ImGui::Initialize(ImGuiContext* context)
 {
     ImGuiContext& g = *context;
@@ -4143,154 +3087,6 @@
     g.Initialized = false;
 }
 
-ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    for (int i = 0; i != g.SettingsWindows.Size; i++)
-        if (g.SettingsWindows[i].ID == id)
-            return &g.SettingsWindows[i];
-    return NULL;
-}
-
-static ImGuiWindowSettings* CreateNewWindowSettings(const char* name)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsWindows.push_back(ImGuiWindowSettings());
-    ImGuiWindowSettings* settings = &g.SettingsWindows.back();
-    settings->Name = ImStrdup(name);
-    settings->ID = ImHash(name, 0);
-    return settings;
-}
-
-void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
-{
-    size_t file_data_size = 0;
-    char* file_data = (char*)ImFileLoadToMemory(ini_filename, "rb", &file_data_size);
-    if (!file_data)
-        return;
-    LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
-    ImGui::MemFree(file_data);
-}
-
-ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
-{
-    ImGuiContext& g = *GImGui;
-    const ImGuiID type_hash = ImHash(type_name, 0, 0);
-    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
-        if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
-            return &g.SettingsHandlers[handler_n];
-    return NULL;
-}
-
-// Zero-tolerance, no error reporting, cheap .ini parsing
-void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.Initialized);
-    IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
-
-    // For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
-    // For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
-    if (ini_size == 0)
-        ini_size = strlen(ini_data);
-    char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
-    char* buf_end = buf + ini_size;
-    memcpy(buf, ini_data, ini_size);
-    buf[ini_size] = 0;
-
-    void* entry_data = NULL;
-    ImGuiSettingsHandler* entry_handler = NULL;
-
-    char* line_end = NULL;
-    for (char* line = buf; line < buf_end; line = line_end + 1)
-    {
-        // Skip new lines markers, then find end of the line
-        while (*line == '\n' || *line == '\r')
-            line++;
-        line_end = line;
-        while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
-            line_end++;
-        line_end[0] = 0;
-
-        if (line[0] == '[' && line_end > line && line_end[-1] == ']')
-        {
-            // Parse "[Type][Name]". Note that 'Name' can itself contains [] characters, which is acceptable with the current format and parsing code.
-            line_end[-1] = 0;
-            const char* name_end = line_end - 1;
-            const char* type_start = line + 1;
-            char* type_end = (char*)(intptr_t)ImStrchrRange(type_start, name_end, ']');
-            const char* name_start = type_end ? ImStrchrRange(type_end + 1, name_end, '[') : NULL;
-            if (!type_end || !name_start)
-            {
-                name_start = type_start; // Import legacy entries that have no type
-                type_start = "Window";
-            }
-            else
-            {
-                *type_end = 0; // Overwrite first ']'
-                name_start++;  // Skip second '['
-            }
-            entry_handler = FindSettingsHandler(type_start);
-            entry_data = entry_handler ? entry_handler->ReadOpenFn(&g, entry_handler, name_start) : NULL;
-        }
-        else if (entry_handler != NULL && entry_data != NULL)
-        {
-            // Let type handler parse the line
-            entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
-        }
-    }
-    ImGui::MemFree(buf);
-    g.SettingsLoaded = true;
-}
-
-void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsDirtyTimer = 0.0f;
-    if (!ini_filename)
-        return;
-
-    size_t ini_data_size = 0;
-    const char* ini_data = SaveIniSettingsToMemory(&ini_data_size);
-    FILE* f = ImFileOpen(ini_filename, "wt");
-    if (!f)
-        return;
-    fwrite(ini_data, sizeof(char), ini_data_size, f);
-    fclose(f);
-}
-
-// Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer
-const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
-{
-    ImGuiContext& g = *GImGui;
-    g.SettingsDirtyTimer = 0.0f;
-    g.SettingsIniData.Buf.resize(0);
-    g.SettingsIniData.Buf.push_back(0);
-    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
-    {
-        ImGuiSettingsHandler* handler = &g.SettingsHandlers[handler_n];
-        handler->WriteAllFn(&g, handler, &g.SettingsIniData);
-    }
-    if (out_size)
-        *out_size = (size_t)g.SettingsIniData.size();
-    return g.SettingsIniData.c_str();
-}
-
-void ImGui::MarkIniSettingsDirty()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.SettingsDirtyTimer <= 0.0f)
-        g.SettingsDirtyTimer = g.IO.IniSavingRate;
-}
-
-void ImGui::MarkIniSettingsDirty(ImGuiWindow* window)
-{
-    ImGuiContext& g = *GImGui;
-    if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings))
-        if (g.SettingsDirtyTimer <= 0.0f)
-            g.SettingsDirtyTimer = g.IO.IniSavingRate;
-}
-
 // FIXME: Add a more explicit sort order in the window structure.
 static int IMGUI_CDECL ChildWindowComparer(const void* lhs, const void* rhs)
 {
@@ -4588,74 +3384,6 @@
     return text_display_end;
 }
 
-// Pass text data straight to log (without being displayed)
-void ImGui::LogText(const char* fmt, ...)
-{
-    ImGuiContext& g = *GImGui;
-    if (!g.LogEnabled)
-        return;
-
-    va_list args;
-    va_start(args, fmt);
-    if (g.LogFile)
-        vfprintf(g.LogFile, fmt, args);
-    else
-        g.LogClipboard.appendfv(fmt, args);
-    va_end(args);
-}
-
-// Internal version that takes a position to decide on newline placement and pad items according to their depth.
-// We split text into individual lines to add current tree level padding
-void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    if (!text_end)
-        text_end = ImGui::FindRenderedTextEnd(text, text_end);
-
-    const bool log_new_line = ref_pos && (ref_pos->y > window->DC.LogLinePosY + 1);
-    if (ref_pos)
-        window->DC.LogLinePosY = ref_pos->y;
-
-    const char* text_remaining = text;
-    if (g.LogStartDepth > window->DC.TreeDepth)  // Re-adjust padding if we have popped out of our starting depth
-        g.LogStartDepth = window->DC.TreeDepth;
-    const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth);
-    for (;;)
-    {
-        // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry.
-        const char* line_end = text_remaining;
-        while (line_end < text_end)
-            if (*line_end == '\n')
-                break;
-            else
-                line_end++;
-        if (line_end >= text_end)
-            line_end = NULL;
-
-        const bool is_first_line = (text == text_remaining);
-        bool is_last_line = false;
-        if (line_end == NULL)
-        {
-            is_last_line = true;
-            line_end = text_end;
-        }
-        if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
-        {
-            const int char_count = (int)(line_end - text_remaining);
-            if (log_new_line || !is_first_line)
-                ImGui::LogText(IM_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining);
-            else
-                ImGui::LogText(" %.*s", char_count, text_remaining);
-        }
-
-        if (is_last_line)
-            break;
-        text_remaining = line_end + 1;
-    }
-}
-
 // Internal ImGui functions to render text
 // RenderText***() functions calls ImDrawList::AddText() calls ImBitmapFont::RenderText()
 void ImGui::RenderText(ImVec2 pos, const char* text, const char* text_end, bool hide_text_after_hash)
@@ -5257,376 +3985,6 @@
     return ImRect(0.0f, 0.0f, g.IO.DisplaySize.x, g.IO.DisplaySize.y);
 }
 
-// Not exposed publicly as BeginTooltip() because bool parameters are evil. Let's see if other needs arise first.
-void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, bool override_previous_tooltip)
-{
-    ImGuiContext& g = *GImGui;
-    char window_name[16];
-    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
-    if (override_previous_tooltip)
-        if (ImGuiWindow* window = FindWindowByName(window_name))
-            if (window->Active)
-            {
-                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
-                window->Hidden = true;
-                window->HiddenFramesRegular = 1;
-                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
-            }
-    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoInputs|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoNav;
-    Begin(window_name, NULL, flags | extra_flags);
-}
-
-void ImGui::SetTooltipV(const char* fmt, va_list args)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.DragDropWithinSourceOrTarget)
-        BeginTooltip();
-    else
-        BeginTooltipEx(0, true);
-    TextV(fmt, args);
-    EndTooltip();
-}
-
-void ImGui::SetTooltip(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    SetTooltipV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::BeginTooltip()
-{
-    ImGuiContext& g = *GImGui;
-    if (g.DragDropWithinSourceOrTarget)
-    {
-        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
-        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
-        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
-        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
-        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
-        SetNextWindowPos(tooltip_pos);
-        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
-        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
-        BeginTooltipEx(0, true);
-    }
-    else
-    {
-        BeginTooltipEx(0, false);
-    }
-}
-
-void ImGui::EndTooltip()
-{
-    IM_ASSERT(GetCurrentWindowRead()->Flags & ImGuiWindowFlags_Tooltip);   // Mismatched BeginTooltip()/EndTooltip() calls
-    End();
-}
-
-// Mark popup as open (toggle toward open state).
-// Popups are closed when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
-// Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
-// One open popup per level of the popup hierarchy (NB: when assigning we reset the Window member of ImGuiPopupRef to NULL)
-void ImGui::OpenPopupEx(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* parent_window = g.CurrentWindow;
-    int current_stack_size = g.CurrentPopupStack.Size;
-    ImGuiPopupRef popup_ref; // Tagged as new ref as Window will be set back to NULL if we write this into OpenPopupStack.
-    popup_ref.PopupId = id;
-    popup_ref.Window = NULL;
-    popup_ref.ParentWindow = parent_window;
-    popup_ref.OpenFrameCount = g.FrameCount;
-    popup_ref.OpenParentId = parent_window->IDStack.back();
-    popup_ref.OpenMousePos = g.IO.MousePos;
-    popup_ref.OpenPopupPos = NavCalcPreferredRefPos();
-
-    //printf("[%05d] OpenPopupEx(0x%08X)\n", g.FrameCount, id);
-    if (g.OpenPopupStack.Size < current_stack_size + 1)
-    {
-        g.OpenPopupStack.push_back(popup_ref);
-    }
-    else
-    {
-        // Gently handle the user mistakenly calling OpenPopup() every frame. It is a programming mistake! However, if we were to run the regular code path, the ui
-        // would become completely unusable because the popup will always be in hidden-while-calculating-size state _while_ claiming focus. Which would be a very confusing
-        // situation for the programmer. Instead, we silently allow the popup to proceed, it will keep reappearing and the programming error will be more obvious to understand.
-        if (g.OpenPopupStack[current_stack_size].PopupId == id && g.OpenPopupStack[current_stack_size].OpenFrameCount == g.FrameCount - 1)
-        {
-            g.OpenPopupStack[current_stack_size].OpenFrameCount = popup_ref.OpenFrameCount;
-        }
-        else
-        {
-            // Close child popups if any, then flag popup for open/reopen
-            g.OpenPopupStack.resize(current_stack_size + 1);
-            g.OpenPopupStack[current_stack_size] = popup_ref;
-        }
-
-        // When reopening a popup we first refocus its parent, otherwise if its parent is itself a popup it would get closed by ClosePopupsOverWindow().
-        // This is equivalent to what ClosePopupToLevel() does.
-        //if (g.OpenPopupStack[current_stack_size].PopupId == id)
-        //    FocusWindow(parent_window);
-    }
-}
-
-void ImGui::OpenPopup(const char* str_id)
-{
-    ImGuiContext& g = *GImGui;
-    OpenPopupEx(g.CurrentWindow->GetID(str_id));
-}
-
-void ImGui::ClosePopupsOverWindow(ImGuiWindow* ref_window)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.OpenPopupStack.empty())
-        return;
-
-    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
-    // Don't close our own child popup windows.
-    int n = 0;
-    if (ref_window)
-    {
-        for (n = 0; n < g.OpenPopupStack.Size; n++)
-        {
-            ImGuiPopupRef& popup = g.OpenPopupStack[n];
-            if (!popup.Window)
-                continue;
-            IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
-            if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
-                continue;
-
-            // Trim the stack if popups are not direct descendant of the reference window (which is often the NavWindow)
-            bool has_focus = false;
-            for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
-                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
-            if (!has_focus)
-                break;
-        }
-    }
-    if (n < g.OpenPopupStack.Size) // This test is not required but it allows to set a convenient breakpoint on the block below
-        ClosePopupToLevel(n);
-}
-
-ImGuiWindow* ImGui::GetFrontMostPopupModal()
-{
-    ImGuiContext& g = *GImGui;
-    for (int n = g.OpenPopupStack.Size-1; n >= 0; n--)
-        if (ImGuiWindow* popup = g.OpenPopupStack.Data[n].Window)
-            if (popup->Flags & ImGuiWindowFlags_Modal)
-                return popup;
-    return NULL;
-}
-
-void ImGui::ClosePopupToLevel(int remaining)
-{
-    IM_ASSERT(remaining >= 0);
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* focus_window = (remaining > 0) ? g.OpenPopupStack[remaining-1].Window : g.OpenPopupStack[0].ParentWindow;
-    if (g.NavLayer == 0)
-        focus_window = NavRestoreLastChildNavWindow(focus_window);
-    FocusWindow(focus_window);
-    focus_window->DC.NavHideHighlightOneFrame = true;
-    g.OpenPopupStack.resize(remaining);
-}
-
-void ImGui::ClosePopup(ImGuiID id)
-{
-    if (!IsPopupOpen(id))
-        return;
-    ImGuiContext& g = *GImGui;
-    ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-}
-
-// Close the popup we have begin-ed into.
-void ImGui::CloseCurrentPopup()
-{
-    ImGuiContext& g = *GImGui;
-    int popup_idx = g.CurrentPopupStack.Size - 1;
-    if (popup_idx < 0 || popup_idx >= g.OpenPopupStack.Size || g.CurrentPopupStack[popup_idx].PopupId != g.OpenPopupStack[popup_idx].PopupId)
-        return;
-    while (popup_idx > 0 && g.OpenPopupStack[popup_idx].Window && (g.OpenPopupStack[popup_idx].Window->Flags & ImGuiWindowFlags_ChildMenu))
-        popup_idx--;
-    ClosePopupToLevel(popup_idx);
-}
-
-bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (!IsPopupOpen(id))
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-
-    char name[20];
-    if (extra_flags & ImGuiWindowFlags_ChildMenu)
-        ImFormatString(name, IM_ARRAYSIZE(name), "##Menu_%02d", g.CurrentPopupStack.Size);    // Recycle windows based on depth
-    else
-        ImFormatString(name, IM_ARRAYSIZE(name), "##Popup_%08x", id); // Not recycling, so we can close/open during the same frame
-
-    bool is_open = Begin(name, NULL, extra_flags | ImGuiWindowFlags_Popup);
-    if (!is_open) // NB: Begin can return false when the popup is completely clipped (e.g. zero size display)
-        EndPopup();
-
-    return is_open;
-}
-
-bool ImGui::BeginPopup(const char* str_id, ImGuiWindowFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.OpenPopupStack.Size <= g.CurrentPopupStack.Size) // Early out for performance
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-    return BeginPopupEx(g.CurrentWindow->GetID(str_id), flags|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::IsPopupOpen(ImGuiID id)
-{
-    ImGuiContext& g = *GImGui;
-    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == id;
-}
-
-bool ImGui::IsPopupOpen(const char* str_id)
-{
-    ImGuiContext& g = *GImGui;
-    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == g.CurrentWindow->GetID(str_id);
-}
-
-bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    const ImGuiID id = window->GetID(name);
-    if (!IsPopupOpen(id))
-    {
-        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
-        return false;
-    }
-
-    // Center modal windows by default
-    // FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
-    if (g.NextWindowData.PosCond == 0)
-        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
-
-    bool is_open = Begin(name, p_open, flags | ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
-    if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-    {
-        EndPopup();
-        if (is_open)
-            ClosePopup(id);
-        return false;
-    }
-
-    return is_open;
-}
-
-void ImGui::NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, const ImRect& bb_rel, ImGuiNavMoveFlags move_flags)
-{
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_None);
-    ImGui::NavMoveRequestCancel();
-    g.NavMoveDir = move_dir;
-    g.NavMoveClipDir = clip_dir;
-    g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
-    g.NavMoveRequestFlags = move_flags;
-    g.NavWindow->NavRectRel[g.NavLayer] = bb_rel;
-}
-
-void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.NavWindow != window || !NavMoveRequestButNoResultYet() || g.NavMoveRequestForward != ImGuiNavForward_None || g.NavLayer != 0)
-        return;
-    IM_ASSERT(move_flags != 0); // No points calling this with no wrapping
-    ImRect bb_rel = window->NavRectRel[0];
-
-    ImGuiDir clip_dir = g.NavMoveDir;
-    if (g.NavMoveDir == ImGuiDir_Left && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
-    {
-        bb_rel.Min.x = bb_rel.Max.x = ImMax(window->SizeFull.x, window->SizeContents.x) - window->Scroll.x;
-        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(-bb_rel.GetHeight()); clip_dir = ImGuiDir_Up; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Right && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
-    {
-        bb_rel.Min.x = bb_rel.Max.x = -window->Scroll.x;
-        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(+bb_rel.GetHeight()); clip_dir = ImGuiDir_Down; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Up && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
-    {
-        bb_rel.Min.y = bb_rel.Max.y = ImMax(window->SizeFull.y, window->SizeContents.y) - window->Scroll.y;
-        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(-bb_rel.GetWidth()); clip_dir = ImGuiDir_Left; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-    if (g.NavMoveDir == ImGuiDir_Down && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
-    {
-        bb_rel.Min.y = bb_rel.Max.y = -window->Scroll.y;
-        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(+bb_rel.GetWidth()); clip_dir = ImGuiDir_Right; }
-        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
-    }
-}
-
-void ImGui::EndPopup()
-{
-    ImGuiContext& g = *GImGui; (void)g;
-    IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup);  // Mismatched BeginPopup()/EndPopup() calls
-    IM_ASSERT(g.CurrentPopupStack.Size > 0);
-
-    // Make all menus and popups wrap around for now, may need to expose that policy.
-    NavMoveRequestTryWrapping(g.CurrentWindow, ImGuiNavMoveFlags_LoopY);
-
-    End();
-}
-
-bool ImGui::OpenPopupOnItemClick(const char* str_id, int mouse_button)
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-    {
-        ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
-        IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
-        OpenPopupEx(id);
-        return true;
-    }
-    return false;
-}
-
-// This is a helper to handle the simplest case of associating one named popup to one given widget.
-// You may want to handle this on user side if you have specific needs (e.g. tweaking IsItemHovered() parameters).
-// You can pass a NULL str_id to use the identifier of the last item.
-bool ImGui::BeginPopupContextItem(const char* str_id, int mouse_button)
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
-    IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
-    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-        OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::BeginPopupContextWindow(const char* str_id, int mouse_button, bool also_over_items)
-{
-    if (!str_id)
-        str_id = "window_context";
-    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
-    if (IsMouseReleased(mouse_button) && IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
-        if (also_over_items || !IsAnyItemHovered())
-            OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
-bool ImGui::BeginPopupContextVoid(const char* str_id, int mouse_button)
-{
-    if (!str_id)
-        str_id = "void_context";
-    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
-    if (IsMouseReleased(mouse_button) && !IsWindowHovered(ImGuiHoveredFlags_AnyWindow))
-        OpenPopupEx(id);
-    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
-}
-
 static bool ImGui::BeginChildEx(const char* name, ImGuiID id, const ImVec2& size_arg, bool border, ImGuiWindowFlags flags)
 {
     ImGuiContext& g = *GImGui;
@@ -5670,7 +4028,6 @@
         SetActiveID(id+1, child_window); // Steal ActiveId with a dummy id so that key-press won't activate child item
         g.ActiveIdSource = ImGuiInputSource_Nav;
     }
-
     return ret;
 }
 
@@ -5761,112 +4118,6 @@
     IM_ASSERT(p_backup == window->DC.StackSizesBackup + IM_ARRAYSIZE(window->DC.StackSizesBackup));
 }
 
-ImRect ImGui::GetWindowAllowedExtentRect(ImGuiWindow*)
-{
-    ImVec2 padding = GImGui->Style.DisplaySafeAreaPadding;
-    ImRect r_screen = GetViewportRect();
-    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
-    return r_screen;
-}
-
-// r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
-// r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
-ImVec2 ImGui::FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy)
-{
-    ImVec2 base_pos_clamped = ImClamp(ref_pos, r_outer.Min, r_outer.Max - size);
-    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
-    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
-
-    // Combo Box policy (we want a connecting edge)
-    if (policy == ImGuiPopupPositionPolicy_ComboBox)
-    {
-        const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Down, ImGuiDir_Right, ImGuiDir_Left, ImGuiDir_Up };
-        for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
-        {
-            const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
-            if (n != -1 && dir == *last_dir) // Already tried this direction?
-                continue;
-            ImVec2 pos;
-            if (dir == ImGuiDir_Down)  pos = ImVec2(r_avoid.Min.x, r_avoid.Max.y);          // Below, Toward Right (default)
-            if (dir == ImGuiDir_Right) pos = ImVec2(r_avoid.Min.x, r_avoid.Min.y - size.y); // Above, Toward Right
-            if (dir == ImGuiDir_Left)  pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Max.y); // Below, Toward Left
-            if (dir == ImGuiDir_Up)    pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Min.y - size.y); // Above, Toward Left
-            if (!r_outer.Contains(ImRect(pos, pos + size)))
-                continue;
-            *last_dir = dir;
-            return pos;
-        }
-    }
-
-    // Default popup policy
-    const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
-    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
-    {
-        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
-        if (n != -1 && dir == *last_dir) // Already tried this direction?
-            continue;
-        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
-        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
-        if (avail_w < size.x || avail_h < size.y)
-            continue;
-        ImVec2 pos;
-        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
-        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
-        *last_dir = dir;
-        return pos;
-    }
-
-    // Fallback, try to keep within display
-    *last_dir = ImGuiDir_None;
-    ImVec2 pos = ref_pos;
-    pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
-    pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
-    return pos;
-}
-
-ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
-{
-    ImGuiContext& g = *GImGui;
-
-    ImRect r_outer = GetWindowAllowedExtentRect(window);
-    if (window->Flags & ImGuiWindowFlags_ChildMenu)
-    {
-        // Child menus typically request _any_ position within the parent menu item, and then our FindBestWindowPosForPopup() function will move the new menu outside the parent bounds.
-        // This is how we end up with child menus appearing (most-commonly) on the right of the parent menu.
-        IM_ASSERT(g.CurrentWindow == window);
-        ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.Size - 2];
-        float horizontal_overlap = g.Style.ItemSpacing.x;       // We want some overlap to convey the relative depth of each menu (currently the amount of overlap is hard-coded to style.ItemSpacing.x).
-        ImRect r_avoid;
-        if (parent_window->DC.MenuBarAppending)
-            r_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
-        else
-            r_avoid = ImRect(parent_window->Pos.x + horizontal_overlap, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - horizontal_overlap - parent_window->ScrollbarSizes.x, FLT_MAX);
-        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-    }
-    if (window->Flags & ImGuiWindowFlags_Popup)
-    {
-        ImRect r_avoid = ImRect(window->Pos.x - 1, window->Pos.y - 1, window->Pos.x + 1, window->Pos.y + 1);
-        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-    }
-    if (window->Flags & ImGuiWindowFlags_Tooltip)
-    {
-        // Position tooltip (always follows mouse)
-        float sc = g.Style.MouseCursorScale;
-        ImVec2 ref_pos = NavCalcPreferredRefPos();
-        ImRect r_avoid;
-        if (!g.NavDisableHighlight && g.NavDisableMouseHover && !(g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos))
-            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 16, ref_pos.y + 8);
-        else
-            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24 * sc, ref_pos.y + 24 * sc); // FIXME: Hard-coded based on mouse cursor shape expectation. Exact dimension not very important.
-        ImVec2 pos = FindBestWindowPosForPopupEx(ref_pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
-        if (window->AutoPosLastDirection == ImGuiDir_None)
-            pos = ref_pos + ImVec2(2, 2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
-        return pos;
-    }
-    IM_ASSERT(0);
-    return window->Pos;
-}
-
 static void SetWindowConditionAllowFlags(ImGuiWindow* window, ImGuiCond flags, bool enabled)
 {
     window->SetWindowPosAllowFlags       = enabled ? (window->SetWindowPosAllowFlags       | flags) : (window->SetWindowPosAllowFlags       & ~flags);
@@ -6843,116 +5094,6 @@
     SetCurrentWindow(g.CurrentWindowStack.empty() ? NULL : g.CurrentWindowStack.back());
 }
 
-// Vertical scrollbar
-// The entire piece of code below is rather confusing because:
-// - We handle absolute seeking (when first clicking outside the grab) and relative manipulation (afterward or when clicking inside the grab)
-// - We store values as normalized ratio and in a form that allows the window content to change while we are holding on a scrollbar
-// - We handle both horizontal and vertical scrollbars, which makes the terminology not ideal.
-void ImGui::Scrollbar(ImGuiLayoutType direction)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    const bool horizontal = (direction == ImGuiLayoutType_Horizontal);
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(horizontal ? "#SCROLLX" : "#SCROLLY");
-
-    // Render background
-    bool other_scrollbar = (horizontal ? window->ScrollbarY : window->ScrollbarX);
-    float other_scrollbar_size_w = other_scrollbar ? style.ScrollbarSize : 0.0f;
-    const ImRect window_rect = window->Rect();
-    const float border_size = window->WindowBorderSize;
-    ImRect bb = horizontal
-        ? ImRect(window->Pos.x + border_size, window_rect.Max.y - style.ScrollbarSize, window_rect.Max.x - other_scrollbar_size_w - border_size, window_rect.Max.y - border_size)
-        : ImRect(window_rect.Max.x - style.ScrollbarSize, window->Pos.y + border_size, window_rect.Max.x - border_size, window_rect.Max.y - other_scrollbar_size_w - border_size);
-    if (!horizontal)
-        bb.Min.y += window->TitleBarHeight() + ((window->Flags & ImGuiWindowFlags_MenuBar) ? window->MenuBarHeight() : 0.0f);
-    if (bb.GetWidth() <= 0.0f || bb.GetHeight() <= 0.0f)
-        return;
-
-    int window_rounding_corners;
-    if (horizontal)
-        window_rounding_corners = ImDrawCornerFlags_BotLeft | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
-    else
-        window_rounding_corners = (((window->Flags & ImGuiWindowFlags_NoTitleBar) && !(window->Flags & ImGuiWindowFlags_MenuBar)) ? ImDrawCornerFlags_TopRight : 0) | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
-    window->DrawList->AddRectFilled(bb.Min, bb.Max, GetColorU32(ImGuiCol_ScrollbarBg), window->WindowRounding, window_rounding_corners);
-    bb.Expand(ImVec2(-ImClamp((float)(int)((bb.Max.x - bb.Min.x - 2.0f) * 0.5f), 0.0f, 3.0f), -ImClamp((float)(int)((bb.Max.y - bb.Min.y - 2.0f) * 0.5f), 0.0f, 3.0f)));
-
-    // V denote the main, longer axis of the scrollbar (= height for a vertical scrollbar)
-    float scrollbar_size_v = horizontal ? bb.GetWidth() : bb.GetHeight();
-    float scroll_v = horizontal ? window->Scroll.x : window->Scroll.y;
-    float win_size_avail_v = (horizontal ? window->SizeFull.x : window->SizeFull.y) - other_scrollbar_size_w;
-    float win_size_contents_v = horizontal ? window->SizeContents.x : window->SizeContents.y;
-
-    // Calculate the height of our grabbable box. It generally represent the amount visible (vs the total scrollable amount)
-    // But we maintain a minimum size in pixel to allow for the user to still aim inside.
-    IM_ASSERT(ImMax(win_size_contents_v, win_size_avail_v) > 0.0f); // Adding this assert to check if the ImMax(XXX,1.0f) is still needed. PLEASE CONTACT ME if this triggers.
-    const float win_size_v = ImMax(ImMax(win_size_contents_v, win_size_avail_v), 1.0f);
-    const float grab_h_pixels = ImClamp(scrollbar_size_v * (win_size_avail_v / win_size_v), style.GrabMinSize, scrollbar_size_v);
-    const float grab_h_norm = grab_h_pixels / scrollbar_size_v;
-
-    // Handle input right away. None of the code of Begin() is relying on scrolling position before calling Scrollbar().
-    bool held = false;
-    bool hovered = false;
-    const bool previously_held = (g.ActiveId == id);
-    ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_NoNavFocus);
-
-    float scroll_max = ImMax(1.0f, win_size_contents_v - win_size_avail_v);
-    float scroll_ratio = ImSaturate(scroll_v / scroll_max);
-    float grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
-    if (held && grab_h_norm < 1.0f)
-    {
-        float scrollbar_pos_v = horizontal ? bb.Min.x : bb.Min.y;
-        float mouse_pos_v = horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
-        float* click_delta_to_grab_center_v = horizontal ? &g.ScrollbarClickDeltaToGrabCenter.x : &g.ScrollbarClickDeltaToGrabCenter.y;
-
-        // Click position in scrollbar normalized space (0.0f->1.0f)
-        const float clicked_v_norm = ImSaturate((mouse_pos_v - scrollbar_pos_v) / scrollbar_size_v);
-        SetHoveredID(id);
-
-        bool seek_absolute = false;
-        if (!previously_held)
-        {
-            // On initial click calculate the distance between mouse and the center of the grab
-            if (clicked_v_norm >= grab_v_norm && clicked_v_norm <= grab_v_norm + grab_h_norm)
-            {
-                *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
-            }
-            else
-            {
-                seek_absolute = true;
-                *click_delta_to_grab_center_v = 0.0f;
-            }
-        }
-
-        // Apply scroll
-        // It is ok to modify Scroll here because we are being called in Begin() after the calculation of SizeContents and before setting up our starting position
-        const float scroll_v_norm = ImSaturate((clicked_v_norm - *click_delta_to_grab_center_v - grab_h_norm*0.5f) / (1.0f - grab_h_norm));
-        scroll_v = (float)(int)(0.5f + scroll_v_norm * scroll_max);//(win_size_contents_v - win_size_v));
-        if (horizontal)
-            window->Scroll.x = scroll_v;
-        else
-            window->Scroll.y = scroll_v;
-
-        // Update values for rendering
-        scroll_ratio = ImSaturate(scroll_v / scroll_max);
-        grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
-
-        // Update distance to grab now that we have seeked and saturated
-        if (seek_absolute)
-            *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
-    }
-
-    // Render
-    const ImU32 grab_col = GetColorU32(held ? ImGuiCol_ScrollbarGrabActive : hovered ? ImGuiCol_ScrollbarGrabHovered : ImGuiCol_ScrollbarGrab);
-    ImRect grab_rect;
-    if (horizontal)
-        grab_rect = ImRect(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm), bb.Min.y, ImMin(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm) + grab_h_pixels, window_rect.Max.x), bb.Max.y);
-    else
-        grab_rect = ImRect(bb.Min.x, ImLerp(bb.Min.y, bb.Max.y, grab_v_norm), bb.Max.x, ImMin(ImLerp(bb.Min.y, bb.Max.y, grab_v_norm) + grab_h_pixels, window_rect.Max.y));
-    window->DrawList->AddRectFilled(grab_rect.Min, grab_rect.Max, grab_col, style.ScrollbarRounding);
-}
-
 void ImGui::BringWindowToFront(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -7871,177 +6012,6 @@
     return window->DC.StateStorage;
 }
 
-void ImGui::TextV(const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const char* text_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    TextUnformatted(g.TempBuffer, text_end);
-}
-
-void ImGui::Text(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextColoredV(const ImVec4& col, const char* fmt, va_list args)
-{
-    PushStyleColor(ImGuiCol_Text, col);
-    TextV(fmt, args);
-    PopStyleColor();
-}
-
-void ImGui::TextColored(const ImVec4& col, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextColoredV(col, fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextDisabledV(const char* fmt, va_list args)
-{
-    PushStyleColor(ImGuiCol_Text, GImGui->Style.Colors[ImGuiCol_TextDisabled]);
-    TextV(fmt, args);
-    PopStyleColor();
-}
-
-void ImGui::TextDisabled(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextDisabledV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextWrappedV(const char* fmt, va_list args)
-{
-    bool need_wrap = (GImGui->CurrentWindow->DC.TextWrapPos < 0.0f);    // Keep existing wrap position is one ia already set
-    if (need_wrap) PushTextWrapPos(0.0f);
-    TextV(fmt, args);
-    if (need_wrap) PopTextWrapPos();
-}
-
-void ImGui::TextWrapped(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    TextWrappedV(fmt, args);
-    va_end(args);
-}
-
-void ImGui::TextUnformatted(const char* text, const char* text_end)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    IM_ASSERT(text != NULL);
-    const char* text_begin = text;
-    if (text_end == NULL)
-        text_end = text + strlen(text); // FIXME-OPT
-
-    const ImVec2 text_pos(window->DC.CursorPos.x, window->DC.CursorPos.y + window->DC.CurrentLineTextBaseOffset);
-    const float wrap_pos_x = window->DC.TextWrapPos;
-    const bool wrap_enabled = wrap_pos_x >= 0.0f;
-    if (text_end - text > 2000 && !wrap_enabled)
-    {
-        // Long text!
-        // Perform manual coarse clipping to optimize for long multi-line text
-        // From this point we will only compute the width of lines that are visible. Optimization only available when word-wrapping is disabled.
-        // We also don't vertically center the text within the line full height, which is unlikely to matter because we are likely the biggest and only item on the line.
-        const char* line = text;
-        const float line_height = GetTextLineHeight();
-        const ImRect clip_rect = window->ClipRect;
-        ImVec2 text_size(0,0);
-
-        if (text_pos.y <= clip_rect.Max.y)
-        {
-            ImVec2 pos = text_pos;
-
-            // Lines to skip (can't skip when logging text)
-            if (!g.LogEnabled)
-            {
-                int lines_skippable = (int)((clip_rect.Min.y - text_pos.y) / line_height);
-                if (lines_skippable > 0)
-                {
-                    int lines_skipped = 0;
-                    while (line < text_end && lines_skipped < lines_skippable)
-                    {
-                        const char* line_end = strchr(line, '\n');
-                        if (!line_end)
-                            line_end = text_end;
-                        line = line_end + 1;
-                        lines_skipped++;
-                    }
-                    pos.y += lines_skipped * line_height;
-                }
-            }
-
-            // Lines to render
-            if (line < text_end)
-            {
-                ImRect line_rect(pos, pos + ImVec2(FLT_MAX, line_height));
-                while (line < text_end)
-                {
-                    const char* line_end = strchr(line, '\n');
-                    if (IsClippedEx(line_rect, 0, false))
-                        break;
-
-                    const ImVec2 line_size = CalcTextSize(line, line_end, false);
-                    text_size.x = ImMax(text_size.x, line_size.x);
-                    RenderText(pos, line, line_end, false);
-                    if (!line_end)
-                        line_end = text_end;
-                    line = line_end + 1;
-                    line_rect.Min.y += line_height;
-                    line_rect.Max.y += line_height;
-                    pos.y += line_height;
-                }
-
-                // Count remaining lines
-                int lines_skipped = 0;
-                while (line < text_end)
-                {
-                    const char* line_end = strchr(line, '\n');
-                    if (!line_end)
-                        line_end = text_end;
-                    line = line_end + 1;
-                    lines_skipped++;
-                }
-                pos.y += lines_skipped * line_height;
-            }
-
-            text_size.y += (pos - text_pos).y;
-        }
-
-        ImRect bb(text_pos, text_pos + text_size);
-        ItemSize(bb);
-        ItemAdd(bb, 0);
-    }
-    else
-    {
-        const float wrap_width = wrap_enabled ? CalcWrapWidthForPos(window->DC.CursorPos, wrap_pos_x) : 0.0f;
-        const ImVec2 text_size = CalcTextSize(text_begin, text_end, false, wrap_width);
-
-        // Account of baseline offset
-        ImRect bb(text_pos, text_pos + text_size);
-        ItemSize(text_size);
-        if (!ItemAdd(bb, 0))
-            return;
-
-        // Render (we don't hide text after ## in this end-user function)
-        RenderTextWrapped(bb.Min, text_begin, text_end, wrap_width);
-    }
-}
-
 void ImGui::AlignTextToFramePadding()
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -8053,864 +6023,6 @@
     window->DC.CurrentLineTextBaseOffset = ImMax(window->DC.CurrentLineTextBaseOffset, g.Style.FramePadding.y);
 }
 
-// Add a label+text combo aligned to other label+value widgets
-void ImGui::LabelTextV(const char* label, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect value_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2));
-    const ImRect total_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w + (label_size.x > 0.0f ? style.ItemInnerSpacing.x : 0.0f), style.FramePadding.y*2) + label_size);
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, 0))
-        return;
-
-    // Render
-    const char* value_text_begin = &g.TempBuffer[0];
-    const char* value_text_end = value_text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    RenderTextClipped(value_bb.Min, value_bb.Max, value_text_begin, value_text_end, NULL, ImVec2(0.0f,0.5f));
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(value_bb.Max.x + style.ItemInnerSpacing.x, value_bb.Min.y + style.FramePadding.y), label);
-}
-
-void ImGui::LabelText(const char* label, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    LabelTextV(label, fmt, args);
-    va_end(args);
-}
-
-bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool* out_held, ImGuiButtonFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-
-    if (flags & ImGuiButtonFlags_Disabled)
-    {
-        if (out_hovered) *out_hovered = false;
-        if (out_held) *out_held = false;
-        if (g.ActiveId == id) ClearActiveID();
-        return false;
-    }
-
-    // Default behavior requires click+release on same spot
-    if ((flags & (ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnClick | ImGuiButtonFlags_PressedOnRelease | ImGuiButtonFlags_PressedOnDoubleClick)) == 0)
-        flags |= ImGuiButtonFlags_PressedOnClickRelease;
-
-    ImGuiWindow* backup_hovered_window = g.HoveredWindow;
-    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
-        g.HoveredWindow = window;
-
-    bool pressed = false;
-    bool hovered = ItemHoverable(bb, id);
-
-    // Drag source doesn't report as hovered
-    if (hovered && g.DragDropActive && g.DragDropPayload.SourceId == id && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoDisableHover))
-        hovered = false;
-
-    // Special mode for Drag and Drop where holding button pressed for a long time while dragging another item triggers the button
-    if (g.DragDropActive && (flags & ImGuiButtonFlags_PressedOnDragDropHold) && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoHoldToOpenOthers))
-        if (IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem))
-        {
-            hovered = true;
-            SetHoveredID(id);
-            if (CalcTypematicPressedRepeatAmount(g.HoveredIdTimer + 0.0001f, g.HoveredIdTimer + 0.0001f - g.IO.DeltaTime, 0.01f, 0.70f)) // FIXME: Our formula for CalcTypematicPressedRepeatAmount() is fishy
-            {
-                pressed = true;
-                FocusWindow(window);
-            }
-        }
-
-    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
-        g.HoveredWindow = backup_hovered_window;
-
-    // AllowOverlap mode (rarely used) requires previous frame HoveredId to be null or to match. This allows using patterns where a later submitted widget overlaps a previous one.
-    if (hovered && (flags & ImGuiButtonFlags_AllowItemOverlap) && (g.HoveredIdPreviousFrame != id && g.HoveredIdPreviousFrame != 0))
-        hovered = false;
-
-    // Mouse
-    if (hovered)
-    {
-        if (!(flags & ImGuiButtonFlags_NoKeyModifiers) || (!g.IO.KeyCtrl && !g.IO.KeyShift && !g.IO.KeyAlt))
-        {
-            //                        | CLICKING        | HOLDING with ImGuiButtonFlags_Repeat
-            // PressedOnClickRelease  |  <on release>*  |  <on repeat> <on repeat> .. (NOT on release)  <-- MOST COMMON! (*) only if both click/release were over bounds
-            // PressedOnClick         |  <on click>     |  <on click> <on repeat> <on repeat> ..
-            // PressedOnRelease       |  <on release>   |  <on repeat> <on repeat> .. (NOT on release)
-            // PressedOnDoubleClick   |  <on dclick>    |  <on dclick> <on repeat> <on repeat> ..
-            // FIXME-NAV: We don't honor those different behaviors.
-            if ((flags & ImGuiButtonFlags_PressedOnClickRelease) && g.IO.MouseClicked[0])
-            {
-                SetActiveID(id, window);
-                if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                    SetFocusID(id, window);
-                FocusWindow(window);
-            }
-            if (((flags & ImGuiButtonFlags_PressedOnClick) && g.IO.MouseClicked[0]) || ((flags & ImGuiButtonFlags_PressedOnDoubleClick) && g.IO.MouseDoubleClicked[0]))
-            {
-                pressed = true;
-                if (flags & ImGuiButtonFlags_NoHoldingActiveID)
-                    ClearActiveID();
-                else
-                    SetActiveID(id, window); // Hold on ID
-                FocusWindow(window);
-            }
-            if ((flags & ImGuiButtonFlags_PressedOnRelease) && g.IO.MouseReleased[0])
-            {
-                if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
-                    pressed = true;
-                ClearActiveID();
-            }
-
-            // 'Repeat' mode acts when held regardless of _PressedOn flags (see table above).
-            // Relies on repeat logic of IsMouseClicked() but we may as well do it ourselves if we end up exposing finer RepeatDelay/RepeatRate settings.
-            if ((flags & ImGuiButtonFlags_Repeat) && g.ActiveId == id && g.IO.MouseDownDuration[0] > 0.0f && IsMouseClicked(0, true))
-                pressed = true;
-        }
-
-        if (pressed)
-            g.NavDisableHighlight = true;
-    }
-
-    // Gamepad/Keyboard navigation
-    // We report navigated item as hovered but we don't set g.HoveredId to not interfere with mouse.
-    if (g.NavId == id && !g.NavDisableHighlight && g.NavDisableMouseHover && (g.ActiveId == 0 || g.ActiveId == id || g.ActiveId == window->MoveId))
-        hovered = true;
-
-    if (g.NavActivateDownId == id)
-    {
-        bool nav_activated_by_code = (g.NavActivateId == id);
-        bool nav_activated_by_inputs = IsNavInputPressed(ImGuiNavInput_Activate, (flags & ImGuiButtonFlags_Repeat) ? ImGuiInputReadMode_Repeat : ImGuiInputReadMode_Pressed);
-        if (nav_activated_by_code || nav_activated_by_inputs)
-            pressed = true;
-        if (nav_activated_by_code || nav_activated_by_inputs || g.ActiveId == id)
-        {
-            // Set active id so it can be queried by user via IsItemActive(), equivalent of holding the mouse button.
-            g.NavActivateId = id; // This is so SetActiveId assign a Nav source
-            SetActiveID(id, window);
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                SetFocusID(id, window);
-            g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right) | (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        }
-    }
-
-    bool held = false;
-    if (g.ActiveId == id)
-    {
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
-        {
-            if (g.ActiveIdIsJustActivated)
-                g.ActiveIdClickOffset = g.IO.MousePos - bb.Min;
-            if (g.IO.MouseDown[0])
-            {
-                held = true;
-            }
-            else
-            {
-                if (hovered && (flags & ImGuiButtonFlags_PressedOnClickRelease))
-                    if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
-                        if (!g.DragDropActive)
-                            pressed = true;
-                ClearActiveID();
-            }
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
-                g.NavDisableHighlight = true;
-        }
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-        {
-            if (g.NavActivateDownId != id)
-                ClearActiveID();
-        }
-    }
-
-    if (out_hovered) *out_hovered = hovered;
-    if (out_held) *out_held = held;
-
-    return pressed;
-}
-
-bool ImGui::ButtonEx(const char* label, const ImVec2& size_arg, ImGuiButtonFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    ImVec2 pos = window->DC.CursorPos;
-    if ((flags & ImGuiButtonFlags_AlignTextBaseLine) && style.FramePadding.y < window->DC.CurrentLineTextBaseOffset) // Try to vertically align buttons that are smaller/have no padding so that text baseline matches (bit hacky, since it shouldn't be a flag)
-        pos.y += window->DC.CurrentLineTextBaseOffset - style.FramePadding.y;
-    ImVec2 size = CalcItemSize(size_arg, label_size.x + style.FramePadding.x * 2.0f, label_size.y + style.FramePadding.y * 2.0f);
-
-    const ImRect bb(pos, pos + size);
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
-        flags |= ImGuiButtonFlags_Repeat;
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
-    if (pressed)
-        MarkItemEdited(id);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, style.FrameRounding);
-    RenderTextClipped(bb.Min + style.FramePadding, bb.Max - style.FramePadding, label, NULL, &label_size, style.ButtonTextAlign, &bb);
-
-    // Automatically close popups
-    //if (pressed && !(flags & ImGuiButtonFlags_DontClosePopups) && (window->Flags & ImGuiWindowFlags_Popup))
-    //    CloseCurrentPopup();
-
-    return pressed;
-}
-
-bool ImGui::Button(const char* label, const ImVec2& size_arg)
-{
-    return ButtonEx(label, size_arg, 0);
-}
-
-// Small buttons fits within text without additional vertical spacing.
-bool ImGui::SmallButton(const char* label)
-{
-    ImGuiContext& g = *GImGui;
-    float backup_padding_y = g.Style.FramePadding.y;
-    g.Style.FramePadding.y = 0.0f;
-    bool pressed = ButtonEx(label, ImVec2(0,0), ImGuiButtonFlags_AlignTextBaseLine);
-    g.Style.FramePadding.y = backup_padding_y;
-    return pressed;
-}
-
-bool ImGui::ArrowButtonEx(const char* str_id, ImGuiDir dir, ImVec2 size, ImGuiButtonFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiID id = window->GetID(str_id);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const float default_size = GetFrameHeight();
-    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
-        flags |= ImGuiButtonFlags_Repeat;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, g.Style.FrameRounding);
-    RenderArrow(bb.Min + ImVec2(ImMax(0.0f, size.x - g.FontSize - g.Style.FramePadding.x), ImMax(0.0f, size.y - g.FontSize - g.Style.FramePadding.y)), dir);
-
-    return pressed;
-}
-
-bool ImGui::ArrowButton(const char* str_id, ImGuiDir dir)
-{
-    float sz = GetFrameHeight();
-    return ArrowButtonEx(str_id, dir, ImVec2(sz, sz), 0);
-}
-
-// Tip: use ImGui::PushID()/PopID() to push indices or pointers in the ID stack.
-// Then you can keep 'str_id' empty or the same for all your buttons (instead of creating a string based on a non-string id)
-bool ImGui::InvisibleButton(const char* str_id, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    // Cannot use zero-size for InvisibleButton(). Unlike Button() there is not way to fallback using the label size.
-    IM_ASSERT(size_arg.x != 0.0f && size_arg.y != 0.0f);
-
-    const ImGuiID id = window->GetID(str_id);
-    ImVec2 size = CalcItemSize(size_arg, 0.0f, 0.0f);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    ItemSize(bb);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    return pressed;
-}
-
-// Button to close a window
-bool ImGui::CloseButton(ImGuiID id, const ImVec2& pos, float radius)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    // We intentionally allow interaction when clipped so that a mechanical Alt,Right,Validate sequence close a window.
-    // (this isn't the regular behavior of buttons, but it doesn't affect the user much because navigation tends to keep items visible).
-    const ImRect bb(pos - ImVec2(radius,radius), pos + ImVec2(radius,radius));
-    bool is_clipped = !ItemAdd(bb, id);
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-    if (is_clipped)
-        return pressed;
-
-    // Render
-    ImVec2 center = bb.GetCenter();
-    if (hovered)
-        window->DrawList->AddCircleFilled(center, ImMax(2.0f, radius), GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : ImGuiCol_ButtonHovered), 9);
-
-    float cross_extent = (radius * 0.7071f) - 1.0f;
-    ImU32 cross_col = GetColorU32(ImGuiCol_Text);
-    center -= ImVec2(0.5f, 0.5f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent,+cross_extent), center + ImVec2(-cross_extent,-cross_extent), cross_col, 1.0f);
-    window->DrawList->AddLine(center + ImVec2(+cross_extent,-cross_extent), center + ImVec2(-cross_extent,+cross_extent), cross_col, 1.0f);
-
-    return pressed;
-}
-
-bool ImGui::CollapseButton(ImGuiID id, const ImVec2& pos)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    ImRect bb(pos, pos + ImVec2(g.FontSize, g.FontSize) + g.Style.FramePadding * 2.0f);
-    ItemAdd(bb, id);
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_None);
-
-    ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    if (hovered || held)
-        window->DrawList->AddCircleFilled(bb.GetCenter() + ImVec2(0.0f, -0.5f), g.FontSize * 0.5f + 1.0f, col, 9);
-    RenderArrow(bb.Min + g.Style.FramePadding, window->Collapsed ? ImGuiDir_Right : ImGuiDir_Down, 1.0f);
-
-    // Switch to moving the window after mouse is moved beyond the initial drag threshold
-    if (IsItemActive() && IsMouseDragging())
-        StartMouseMovingWindow(window);
-
-    return pressed;
-}
-
-void ImGui::Image(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, const ImVec4& tint_col, const ImVec4& border_col)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    if (border_col.w > 0.0f)
-        bb.Max += ImVec2(2,2);
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    if (border_col.w > 0.0f)
-    {
-        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(border_col), 0.0f);
-        window->DrawList->AddImage(user_texture_id, bb.Min+ImVec2(1,1), bb.Max-ImVec2(1,1), uv0, uv1, GetColorU32(tint_col));
-    }
-    else
-    {
-        window->DrawList->AddImage(user_texture_id, bb.Min, bb.Max, uv0, uv1, GetColorU32(tint_col));
-    }
-}
-
-// frame_padding < 0: uses FramePadding from style (default)
-// frame_padding = 0: no framing
-// frame_padding > 0: set framing size
-// The color used are the button colors.
-bool ImGui::ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, int frame_padding, const ImVec4& bg_col, const ImVec4& tint_col)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    // Default to using texture ID as ID. User can still push string/integer prefixes.
-    // We could hash the size/uv to create a unique ID but that would prevent the user from animating UV.
-    PushID((void*)user_texture_id);
-    const ImGuiID id = window->GetID("#image");
-    PopID();
-
-    const ImVec2 padding = (frame_padding >= 0) ? ImVec2((float)frame_padding, (float)frame_padding) : style.FramePadding;
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size + padding*2);
-    const ImRect image_bb(window->DC.CursorPos + padding, window->DC.CursorPos + padding + size);
-    ItemSize(bb);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
-    RenderNavHighlight(bb, id);
-    RenderFrame(bb.Min, bb.Max, col, true, ImClamp((float)ImMin(padding.x, padding.y), 0.0f, style.FrameRounding));
-    if (bg_col.w > 0.0f)
-        window->DrawList->AddRectFilled(image_bb.Min, image_bb.Max, GetColorU32(bg_col));
-    window->DrawList->AddImage(user_texture_id, image_bb.Min, image_bb.Max, uv0, uv1, GetColorU32(tint_col));
-
-    return pressed;
-}
-
-// Start logging ImGui output to TTY
-void ImGui::LogToTTY(int max_depth)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = stdout;
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-// Start logging ImGui output to given file
-void ImGui::LogToFile(int max_depth, const char* filename)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    if (!filename)
-    {
-        filename = g.IO.LogFilename;
-        if (!filename)
-            return;
-    }
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = ImFileOpen(filename, "ab");
-    if (!g.LogFile)
-    {
-        IM_ASSERT(g.LogFile != NULL); // Consider this an error
-        return;
-    }
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-// Start logging ImGui output to clipboard
-void ImGui::LogToClipboard(int max_depth)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.LogEnabled)
-        return;
-    ImGuiWindow* window = g.CurrentWindow;
-
-    IM_ASSERT(g.LogFile == NULL);
-    g.LogFile = NULL;
-    g.LogEnabled = true;
-    g.LogStartDepth = window->DC.TreeDepth;
-    if (max_depth >= 0)
-        g.LogAutoExpandMaxDepth = max_depth;
-}
-
-void ImGui::LogFinish()
-{
-    ImGuiContext& g = *GImGui;
-    if (!g.LogEnabled)
-        return;
-
-    LogText(IM_NEWLINE);
-    if (g.LogFile != NULL)
-    {
-        if (g.LogFile == stdout)
-            fflush(g.LogFile);
-        else
-            fclose(g.LogFile);
-        g.LogFile = NULL;
-    }
-    if (g.LogClipboard.size() > 1)
-    {
-        SetClipboardText(g.LogClipboard.begin());
-        g.LogClipboard.clear();
-    }
-    g.LogEnabled = false;
-}
-
-// Helper to display logging buttons
-void ImGui::LogButtons()
-{
-    ImGuiContext& g = *GImGui;
-
-    PushID("LogButtons");
-    const bool log_to_tty = Button("Log To TTY"); SameLine();
-    const bool log_to_file = Button("Log To File"); SameLine();
-    const bool log_to_clipboard = Button("Log To Clipboard"); SameLine();
-    PushItemWidth(80.0f);
-    PushAllowKeyboardFocus(false);
-    SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL);
-    PopAllowKeyboardFocus();
-    PopItemWidth();
-    PopID();
-
-    // Start logging at the end of the function so that the buttons don't appear in the log
-    if (log_to_tty)
-        LogToTTY(g.LogAutoExpandMaxDepth);
-    if (log_to_file)
-        LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename);
-    if (log_to_clipboard)
-        LogToClipboard(g.LogAutoExpandMaxDepth);
-}
-
-bool ImGui::TreeNodeBehaviorIsOpen(ImGuiID id, ImGuiTreeNodeFlags flags)
-{
-    if (flags & ImGuiTreeNodeFlags_Leaf)
-        return true;
-
-    // We only write to the tree storage if the user clicks (or explicitly use SetNextTreeNode*** functions)
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    ImGuiStorage* storage = window->DC.StateStorage;
-
-    bool is_open;
-    if (g.NextTreeNodeOpenCond != 0)
-    {
-        if (g.NextTreeNodeOpenCond & ImGuiCond_Always)
-        {
-            is_open = g.NextTreeNodeOpenVal;
-            storage->SetInt(id, is_open);
-        }
-        else
-        {
-            // We treat ImGuiCond_Once and ImGuiCond_FirstUseEver the same because tree node state are not saved persistently.
-            const int stored_value = storage->GetInt(id, -1);
-            if (stored_value == -1)
-            {
-                is_open = g.NextTreeNodeOpenVal;
-                storage->SetInt(id, is_open);
-            }
-            else
-            {
-                is_open = stored_value != 0;
-            }
-        }
-        g.NextTreeNodeOpenCond = 0;
-    }
-    else
-    {
-        is_open = storage->GetInt(id, (flags & ImGuiTreeNodeFlags_DefaultOpen) ? 1 : 0) != 0;
-    }
-
-    // When logging is enabled, we automatically expand tree nodes (but *NOT* collapsing headers.. seems like sensible behavior).
-    // NB- If we are above max depth we still allow manually opened nodes to be logged.
-    if (g.LogEnabled && !(flags & ImGuiTreeNodeFlags_NoAutoOpenOnLog) && window->DC.TreeDepth < g.LogAutoExpandMaxDepth)
-        is_open = true;
-
-    return is_open;
-}
-
-bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* label, const char* label_end)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const bool display_frame = (flags & ImGuiTreeNodeFlags_Framed) != 0;
-    const ImVec2 padding = (display_frame || (flags & ImGuiTreeNodeFlags_FramePadding)) ? style.FramePadding : ImVec2(style.FramePadding.x, 0.0f);
-
-    if (!label_end)
-        label_end = FindRenderedTextEnd(label);
-    const ImVec2 label_size = CalcTextSize(label, label_end, false);
-
-    // We vertically grow up to current line height up the typical widget height.
-    const float text_base_offset_y = ImMax(padding.y, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
-    const float frame_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + style.FramePadding.y*2), label_size.y + padding.y*2);
-    ImRect frame_bb = ImRect(window->DC.CursorPos, ImVec2(window->Pos.x + GetContentRegionMax().x, window->DC.CursorPos.y + frame_height));
-    if (display_frame)
-    {
-        // Framed header expand a little outside the default padding
-        frame_bb.Min.x -= (float)(int)(window->WindowPadding.x*0.5f) - 1;
-        frame_bb.Max.x += (float)(int)(window->WindowPadding.x*0.5f) - 1;
-    }
-
-    const float text_offset_x = (g.FontSize + (display_frame ? padding.x*3 : padding.x*2));   // Collapser arrow width + Spacing
-    const float text_width = g.FontSize + (label_size.x > 0.0f ? label_size.x + padding.x*2 : 0.0f);   // Include collapser
-    ItemSize(ImVec2(text_width, frame_height), text_base_offset_y);
-
-    // For regular tree nodes, we arbitrary allow to click past 2 worth of ItemSpacing
-    // (Ideally we'd want to add a flag for the user to specify if we want the hit test to be done up to the right side of the content or not)
-    const ImRect interact_bb = display_frame ? frame_bb : ImRect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + text_width + style.ItemSpacing.x*2, frame_bb.Max.y);
-    bool is_open = TreeNodeBehaviorIsOpen(id, flags);
-
-    // Store a flag for the current depth to tell if we will allow closing this node when navigating one of its child.
-    // For this purpose we essentially compare if g.NavIdIsAlive went from 0 to 1 between TreeNode() and TreePop().
-    // This is currently only support 32 level deep and we are fine with (1 << Depth) overflowing into a zero.
-    if (is_open && !g.NavIdIsAlive && (flags & ImGuiTreeNodeFlags_NavLeftJumpsBackHere) && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        window->DC.TreeDepthMayJumpToParentOnPop |= (1 << window->DC.TreeDepth);
-
-    bool item_add = ItemAdd(interact_bb, id);
-    window->DC.LastItemStatusFlags |= ImGuiItemStatusFlags_HasDisplayRect;
-    window->DC.LastItemDisplayRect = frame_bb;
-
-    if (!item_add)
-    {
-        if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-            TreePushRawID(id);
-        return is_open;
-    }
-
-    // Flags that affects opening behavior:
-    // - 0(default) ..................... single-click anywhere to open
-    // - OpenOnDoubleClick .............. double-click anywhere to open
-    // - OpenOnArrow .................... single-click on arrow to open
-    // - OpenOnDoubleClick|OpenOnArrow .. single-click on arrow or double-click anywhere to open
-    ImGuiButtonFlags button_flags = ImGuiButtonFlags_NoKeyModifiers | ((flags & ImGuiTreeNodeFlags_AllowItemOverlap) ? ImGuiButtonFlags_AllowItemOverlap : 0);
-    if (!(flags & ImGuiTreeNodeFlags_Leaf))
-        button_flags |= ImGuiButtonFlags_PressedOnDragDropHold;
-    if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
-        button_flags |= ImGuiButtonFlags_PressedOnDoubleClick | ((flags & ImGuiTreeNodeFlags_OpenOnArrow) ? ImGuiButtonFlags_PressedOnClickRelease : 0);
-
-    bool hovered, held, pressed = ButtonBehavior(interact_bb, id, &hovered, &held, button_flags);
-    if (!(flags & ImGuiTreeNodeFlags_Leaf))
-    {
-        bool toggled = false;
-        if (pressed)
-        {
-            toggled = !(flags & (ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick)) || (g.NavActivateId == id);
-            if (flags & ImGuiTreeNodeFlags_OpenOnArrow)
-                toggled |= IsMouseHoveringRect(interact_bb.Min, ImVec2(interact_bb.Min.x + text_offset_x, interact_bb.Max.y)) && (!g.NavDisableMouseHover);
-            if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
-                toggled |= g.IO.MouseDoubleClicked[0];
-            if (g.DragDropActive && is_open) // When using Drag and Drop "hold to open" we keep the node highlighted after opening, but never close it again.
-                toggled = false;
-        }
-
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Left && is_open)
-        {
-            toggled = true;
-            NavMoveRequestCancel();
-        }
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right && !is_open) // If there's something upcoming on the line we may want to give it the priority?
-        {
-            toggled = true;
-            NavMoveRequestCancel();
-        }
-
-        if (toggled)
-        {
-            is_open = !is_open;
-            window->DC.StateStorage->SetInt(id, is_open);
-        }
-    }
-    if (flags & ImGuiTreeNodeFlags_AllowItemOverlap)
-        SetItemAllowOverlap();
-
-    // Render
-    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
-    const ImVec2 text_pos = frame_bb.Min + ImVec2(text_offset_x, text_base_offset_y);
-    if (display_frame)
-    {
-        // Framed type
-        RenderFrame(frame_bb.Min, frame_bb.Max, col, true, style.FrameRounding);
-        RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
-        RenderArrow(frame_bb.Min + ImVec2(padding.x, text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 1.0f);
-        if (g.LogEnabled)
-        {
-            // NB: '##' is normally used to hide text (as a library-wide feature), so we need to specify the text range to make sure the ## aren't stripped out here.
-            const char log_prefix[] = "\n##";
-            const char log_suffix[] = "##";
-            LogRenderedText(&text_pos, log_prefix, log_prefix+3);
-            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
-            LogRenderedText(&text_pos, log_suffix+1, log_suffix+3);
-        }
-        else
-        {
-            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
-        }
-    }
-    else
-    {
-        // Unframed typed for tree nodes
-        if (hovered || (flags & ImGuiTreeNodeFlags_Selected))
-        {
-            RenderFrame(frame_bb.Min, frame_bb.Max, col, false);
-            RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
-        }
-
-        if (flags & ImGuiTreeNodeFlags_Bullet)
-            RenderBullet(frame_bb.Min + ImVec2(text_offset_x * 0.5f, g.FontSize*0.50f + text_base_offset_y));
-        else if (!(flags & ImGuiTreeNodeFlags_Leaf))
-            RenderArrow(frame_bb.Min + ImVec2(padding.x, g.FontSize*0.15f + text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 0.70f);
-        if (g.LogEnabled)
-            LogRenderedText(&text_pos, ">");
-        RenderText(text_pos, label, label_end, false);
-    }
-
-    if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
-        TreePushRawID(id);
-    return is_open;
-}
-
-// CollapsingHeader returns true when opened but do not indent nor push into the ID stack (because of the ImGuiTreeNodeFlags_NoTreePushOnOpen flag).
-// This is basically the same as calling TreeNodeEx(label, ImGuiTreeNodeFlags_CollapsingHeader). You can remove the _NoTreePushOnOpen flag if you want behavior closer to normal TreeNode().
-bool ImGui::CollapsingHeader(const char* label, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags | ImGuiTreeNodeFlags_CollapsingHeader, label);
-}
-
-bool ImGui::CollapsingHeader(const char* label, bool* p_open, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    if (p_open && !*p_open)
-        return false;
-
-    ImGuiID id = window->GetID(label);
-    bool is_open = TreeNodeBehavior(id, flags | ImGuiTreeNodeFlags_CollapsingHeader | (p_open ? ImGuiTreeNodeFlags_AllowItemOverlap : 0), label);
-    if (p_open)
-    {
-        // Create a small overlapping close button // FIXME: We can evolve this into user accessible helpers to add extra buttons on title bars, headers, etc.
-        ImGuiContext& g = *GImGui;
-        ImGuiItemHoveredDataBackup last_item_backup;
-        float button_radius = g.FontSize * 0.5f;
-        ImVec2 button_center = ImVec2(ImMin(window->DC.LastItemRect.Max.x, window->ClipRect.Max.x) - g.Style.FramePadding.x - button_radius, window->DC.LastItemRect.GetCenter().y);
-        if (CloseButton(window->GetID((void*)(intptr_t)(id+1)), button_center, button_radius))
-            *p_open = false;
-        last_item_backup.Restore();
-    }
-
-    return is_open;
-}
-
-bool ImGui::TreeNodeEx(const char* label, ImGuiTreeNodeFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    return TreeNodeBehavior(window->GetID(label), flags, label, NULL);
-}
-
-bool ImGui::TreeNodeExV(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    return TreeNodeBehavior(window->GetID(str_id), flags, g.TempBuffer, label_end);
-}
-
-bool ImGui::TreeNodeExV(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    return TreeNodeBehavior(window->GetID(ptr_id), flags, g.TempBuffer, label_end);
-}
-
-bool ImGui::TreeNodeV(const char* str_id, const char* fmt, va_list args)
-{
-    return TreeNodeExV(str_id, 0, fmt, args);
-}
-
-bool ImGui::TreeNodeV(const void* ptr_id, const char* fmt, va_list args)
-{
-    return TreeNodeExV(ptr_id, 0, fmt, args);
-}
-
-bool ImGui::TreeNodeEx(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(str_id, flags, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNodeEx(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(ptr_id, flags, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const char* str_id, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(str_id, 0, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const void* ptr_id, const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    bool is_open = TreeNodeExV(ptr_id, 0, fmt, args);
-    va_end(args);
-    return is_open;
-}
-
-bool ImGui::TreeNode(const char* label)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-    return TreeNodeBehavior(window->GetID(label), 0, label, NULL);
-}
-
-void ImGui::TreeAdvanceToLabelPos()
-{
-    ImGuiContext& g = *GImGui;
-    g.CurrentWindow->DC.CursorPos.x += GetTreeNodeToLabelSpacing();
-}
-
-// Horizontal distance preceding label when using TreeNode() or Bullet()
-float ImGui::GetTreeNodeToLabelSpacing()
-{
-    ImGuiContext& g = *GImGui;
-    return g.FontSize + (g.Style.FramePadding.x * 2.0f);
-}
-
-void ImGui::SetNextTreeNodeOpen(bool is_open, ImGuiCond cond)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow->SkipItems)
-        return;
-    g.NextTreeNodeOpenVal = is_open;
-    g.NextTreeNodeOpenCond = cond ? cond : ImGuiCond_Always;
-}
-
 void ImGui::PushID(const char* str_id)
 {
     ImGuiWindow* window = GetCurrentWindowRead();
@@ -8957,4093 +6069,6 @@
     return GImGui->CurrentWindow->GetID(ptr_id);
 }
 
-void ImGui::Bullet()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize, line_height));
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-    {
-        SameLine(0, style.FramePadding.x*2);
-        return;
-    }
-
-    // Render and stay on same line
-    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
-    SameLine(0, style.FramePadding.x*2);
-}
-
-// Text with a little bullet aligned to the typical tree node.
-void ImGui::BulletTextV(const char* fmt, va_list args)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const char* text_begin = g.TempBuffer;
-    const char* text_end = text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
-    const ImVec2 label_size = CalcTextSize(text_begin, text_end, false);
-    const float text_base_offset_y = ImMax(0.0f, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
-    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize + (label_size.x > 0.0f ? (label_size.x + style.FramePadding.x*2) : 0.0f), ImMax(line_height, label_size.y)));  // Empty text doesn't add padding
-    ItemSize(bb);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    // Render
-    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
-    RenderText(bb.Min+ImVec2(g.FontSize + style.FramePadding.x*2, text_base_offset_y), text_begin, text_end, false);
-}
-
-void ImGui::BulletText(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    BulletTextV(fmt, args);
-    va_end(args);
-}
-
-static inline int DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format)
-{
-    if (data_type == ImGuiDataType_S32 || data_type == ImGuiDataType_U32)   // Signedness doesn't matter when pushing the argument
-        return ImFormatString(buf, buf_size, format, *(const ImU32*)data_ptr);
-    if (data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)   // Signedness doesn't matter when pushing the argument
-        return ImFormatString(buf, buf_size, format, *(const ImU64*)data_ptr);
-    if (data_type == ImGuiDataType_Float)
-        return ImFormatString(buf, buf_size, format, *(const float*)data_ptr);
-    if (data_type == ImGuiDataType_Double)
-        return ImFormatString(buf, buf_size, format, *(const double*)data_ptr);
-    IM_ASSERT(0);
-    return 0;
-}
-
-// FIXME: Adding support for clamping on boundaries of the data type would be nice.
-static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg1, const void* arg2)
-{
-    IM_ASSERT(op == '+' || op == '-');
-    switch (data_type)
-    {
-        case ImGuiDataType_S32:
-            if (op == '+')      *(int*)output = *(const int*)arg1 + *(const int*)arg2;
-            else if (op == '-') *(int*)output = *(const int*)arg1 - *(const int*)arg2;
-            return;
-        case ImGuiDataType_U32:
-            if (op == '+')      *(unsigned int*)output = *(const unsigned int*)arg1 + *(const ImU32*)arg2;
-            else if (op == '-') *(unsigned int*)output = *(const unsigned int*)arg1 - *(const ImU32*)arg2;
-            return;
-        case ImGuiDataType_S64:
-            if (op == '+')      *(ImS64*)output = *(const ImS64*)arg1 + *(const ImS64*)arg2;
-            else if (op == '-') *(ImS64*)output = *(const ImS64*)arg1 - *(const ImS64*)arg2;
-            return;
-        case ImGuiDataType_U64:
-            if (op == '+')      *(ImU64*)output = *(const ImU64*)arg1 + *(const ImU64*)arg2;
-            else if (op == '-') *(ImU64*)output = *(const ImU64*)arg1 - *(const ImU64*)arg2;
-            return;
-        case ImGuiDataType_Float:
-            if (op == '+')      *(float*)output = *(const float*)arg1 + *(const float*)arg2;
-            else if (op == '-') *(float*)output = *(const float*)arg1 - *(const float*)arg2;
-            return;
-        case ImGuiDataType_Double:
-            if (op == '+')      *(double*)output = *(const double*)arg1 + *(const double*)arg2;
-            else if (op == '-') *(double*)output = *(const double*)arg1 - *(const double*)arg2;
-            return;
-        case ImGuiDataType_COUNT: break;
-    }
-    IM_ASSERT(0);
-}
-
-struct ImGuiDataTypeInfo
-{
-    size_t      Size;
-    const char* PrintFmt;   // Unused
-    const char* ScanFmt;
-};
-
-static const ImGuiDataTypeInfo GDataTypeInfo[] =
-{
-    { sizeof(int),          "%d",   "%d"    },
-    { sizeof(unsigned int), "%u",   "%u"    },
-#ifdef _MSC_VER
-    { sizeof(ImS64),        "%I64d","%I64d" },
-    { sizeof(ImU64),        "%I64u","%I64u" },
-#else
-    { sizeof(ImS64),        "%lld", "%lld"  },
-    { sizeof(ImU64),        "%llu", "%llu"  },
-#endif
-    { sizeof(float),        "%f",   "%f"    },  // float are promoted to double in va_arg
-    { sizeof(double),       "%f",   "%lf"   },
-};
-IM_STATIC_ASSERT(IM_ARRAYSIZE(GDataTypeInfo) == ImGuiDataType_COUNT);
-
-// User can input math operators (e.g. +100) to edit a numerical values.
-// NB: This is _not_ a full expression evaluator. We should probably add one and replace this dumb mess..
-static bool DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format)
-{
-    while (ImCharIsBlankA(*buf))
-        buf++;
-
-    // We don't support '-' op because it would conflict with inputing negative value.
-    // Instead you can use +-100 to subtract from an existing value
-    char op = buf[0];
-    if (op == '+' || op == '*' || op == '/')
-    {
-        buf++;
-        while (ImCharIsBlankA(*buf))
-            buf++;
-    }
-    else
-    {
-        op = 0;
-    }
-    if (!buf[0])
-        return false;
-
-    // Copy the value in an opaque buffer so we can compare at the end of the function if it changed at all.
-    IM_ASSERT(data_type < ImGuiDataType_COUNT);
-    int data_backup[2];
-    IM_ASSERT(GDataTypeInfo[data_type].Size <= sizeof(data_backup));
-    memcpy(data_backup, data_ptr, GDataTypeInfo[data_type].Size);
-
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].ScanFmt;
-
-    int arg1i = 0;
-    if (data_type == ImGuiDataType_S32)
-    {
-        int* v = (int*)data_ptr;
-        int arg0i = *v;
-        float arg1f = 0.0f;
-        if (op && sscanf(initial_value_buf, format, &arg0i) < 1)
-            return false;
-        // Store operand in a float so we can use fractional value for multipliers (*1.1), but constant always parsed as integer so we can fit big integers (e.g. 2000000003) past float precision
-        if (op == '+')      { if (sscanf(buf, "%d", &arg1i)) *v = (int)(arg0i + arg1i); }                   // Add (use "+-" to subtract)
-        else if (op == '*') { if (sscanf(buf, "%f", &arg1f)) *v = (int)(arg0i * arg1f); }                   // Multiply
-        else if (op == '/') { if (sscanf(buf, "%f", &arg1f) && arg1f != 0.0f) *v = (int)(arg0i / arg1f); }  // Divide
-        else                { if (sscanf(buf, format, &arg1i) == 1) *v = arg1i; }                           // Assign constant
-    }
-    else if (data_type == ImGuiDataType_U32 || data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)
-    {
-        // Assign constant
-        // FIXME: We don't bother handling support for legacy operators since they are a little too crappy. Instead we may implement a proper expression evaluator in the future.
-        sscanf(buf, format, data_ptr);
-    }
-    else if (data_type == ImGuiDataType_Float)
-    {
-        // For floats we have to ignore format with precision (e.g. "%.2f") because sscanf doesn't take them in
-        format = "%f";
-        float* v = (float*)data_ptr;
-        float arg0f = *v, arg1f = 0.0f;
-        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
-            return false;
-        if (sscanf(buf, format, &arg1f) < 1)
-            return false;
-        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
-        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
-        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
-        else                { *v = arg1f; }                            // Assign constant
-    }
-    else if (data_type == ImGuiDataType_Double)
-    {
-        format = "%lf"; // scanf differentiate float/double unlike printf which forces everything to double because of ellipsis
-        double* v = (double*)data_ptr;
-        double arg0f = *v, arg1f = 0.0;
-        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
-            return false;
-        if (sscanf(buf, format, &arg1f) < 1)
-            return false;
-        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
-        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
-        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
-        else                { *v = arg1f; }                            // Assign constant
-    }
-    return memcmp(data_backup, data_ptr, GDataTypeInfo[data_type].Size) != 0;
-}
-
-// Create text input in place of a slider (when CTRL+Clicking on slider)
-// FIXME: Logic is messy and confusing.
-bool ImGui::InputScalarAsWidgetReplacement(const ImRect& bb, ImGuiID id, const char* label, ImGuiDataType data_type, void* data_ptr, const char* format)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-
-    // Our replacement widget will override the focus ID (registered previously to allow for a TAB focus to happen)
-    // On the first frame, g.ScalarAsInputTextId == 0, then on subsequent frames it becomes == id
-    SetActiveID(g.ScalarAsInputTextId, window);
-    g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-    SetHoveredID(0);
-    FocusableItemUnregister(window);
-
-    char fmt_buf[32];
-    char data_buf[32];
-    format = ImParseFormatTrimDecorations(format, fmt_buf, IM_ARRAYSIZE(fmt_buf));
-    DataTypeFormatString(data_buf, IM_ARRAYSIZE(data_buf), data_type, data_ptr, format);
-    ImStrTrimBlanks(data_buf);
-    ImGuiInputTextFlags flags = ImGuiInputTextFlags_AutoSelectAll | ((data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImGuiInputTextFlags_CharsScientific : ImGuiInputTextFlags_CharsDecimal);
-    bool value_changed = InputTextEx(label, data_buf, IM_ARRAYSIZE(data_buf), bb.GetSize(), flags);
-    if (g.ScalarAsInputTextId == 0)     // First frame we started displaying the InputText widget
-    {
-        IM_ASSERT(g.ActiveId == id);    // InputText ID expected to match the Slider ID
-        g.ScalarAsInputTextId = g.ActiveId;
-        SetHoveredID(id);
-    }
-    if (value_changed)
-        return DataTypeApplyOpFromText(data_buf, g.InputTextState.InitialText.Data, data_type, data_ptr, NULL);
-    return false;
-}
-
-// We don't use strchr() because our strings are usually very short and often start with '%'
-const char* ImParseFormatFindStart(const char* fmt)
-{
-    while (char c = fmt[0])
-    {
-        if (c == '%' && fmt[1] != '%')
-            return fmt;
-        else if (c == '%')
-            fmt++;
-        fmt++;
-    }
-    return fmt;
-}
-
-const char* ImParseFormatFindEnd(const char* fmt)
-{
-    // Printf/scanf types modifiers: I/L/h/j/l/t/w/z. Other uppercase letters qualify as types aka end of the format.
-    if (fmt[0] != '%')
-        return fmt;
-    const unsigned int ignored_uppercase_mask = (1 << ('I'-'A')) | (1 << ('L'-'A'));
-    const unsigned int ignored_lowercase_mask = (1 << ('h'-'a')) | (1 << ('j'-'a')) | (1 << ('l'-'a')) | (1 << ('t'-'a')) | (1 << ('w'-'a')) | (1 << ('z'-'a'));
-    for (char c; (c = *fmt) != 0; fmt++)
-    {
-        if (c >= 'A' && c <= 'Z' && ((1 << (c - 'A')) & ignored_uppercase_mask) == 0)
-            return fmt + 1;
-        if (c >= 'a' && c <= 'z' && ((1 << (c - 'a')) & ignored_lowercase_mask) == 0)
-            return fmt + 1;
-    }
-    return fmt;
-}
-
-// Extract the format out of a format string with leading or trailing decorations
-//  fmt = "blah blah"  -> return fmt
-//  fmt = "%.3f"       -> return fmt
-//  fmt = "hello %.3f" -> return fmt + 6
-//  fmt = "%.3f hello" -> return buf written with "%.3f"
-const char* ImParseFormatTrimDecorations(const char* fmt, char* buf, int buf_size)
-{
-    const char* fmt_start = ImParseFormatFindStart(fmt);
-    if (fmt_start[0] != '%')
-        return fmt;
-    const char* fmt_end = ImParseFormatFindEnd(fmt_start);
-    if (fmt_end[0] == 0) // If we only have leading decoration, we don't need to copy the data.
-        return fmt_start;
-    ImStrncpy(buf, fmt_start, ImMin((int)(fmt_end + 1 - fmt_start), buf_size));
-    return buf;
-}
-
-// Parse display precision back from the display format string
-// FIXME: This is still used by some navigation code path to infer a minimum tweak step, but we should aim to rework widgets so it isn't needed.
-int ImParseFormatPrecision(const char* fmt, int default_precision)
-{
-    fmt = ImParseFormatFindStart(fmt);
-    if (fmt[0] != '%')
-        return default_precision;
-    fmt++;
-    while (*fmt >= '0' && *fmt <= '9')
-        fmt++;
-    int precision = INT_MAX;
-    if (*fmt == '.')
-    {
-        fmt = ImAtoi<int>(fmt + 1, &precision);
-        if (precision < 0 || precision > 99)
-            precision = default_precision;
-    }
-    if (*fmt == 'e' || *fmt == 'E') // Maximum precision with scientific notation
-        precision = -1;
-    if ((*fmt == 'g' || *fmt == 'G') && precision == INT_MAX)
-        precision = -1;
-    return (precision == INT_MAX) ? default_precision : precision;
-}
-
-static float GetMinimumStepAtDecimalPrecision(int decimal_precision)
-{
-    static const float min_steps[10] = { 1.0f, 0.1f, 0.01f, 0.001f, 0.0001f, 0.00001f, 0.000001f, 0.0000001f, 0.00000001f, 0.000000001f };
-    if (decimal_precision < 0)
-        return FLT_MIN;
-    return (decimal_precision >= 0 && decimal_precision < 10) ? min_steps[decimal_precision] : ImPow(10.0f, (float)-decimal_precision);
-}
-
-template<typename TYPE, typename SIGNEDTYPE>
-static inline TYPE RoundScalarWithFormat(const char* format, ImGuiDataType data_type, TYPE v)
-{
-    const char* fmt_start = ImParseFormatFindStart(format);
-    if (fmt_start[0] != '%' || fmt_start[1] == '%') // Don't apply if the value is not visible in the format string
-        return v;
-    char v_str[64];
-    ImFormatString(v_str, IM_ARRAYSIZE(v_str), fmt_start, v);
-    const char* p = v_str;
-    while (*p == ' ')
-        p++;
-    if (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double)
-        v = (TYPE)ImAtof(p);
-    else
-        ImAtoi(p, (SIGNEDTYPE*)&v);
-    return v;
-}
-
-template<typename TYPE, typename FLOATTYPE>
-static inline float SliderBehaviorCalcRatioFromValue(ImGuiDataType data_type, TYPE v, TYPE v_min, TYPE v_max, float power, float linear_zero_pos)
-{
-    if (v_min == v_max)
-        return 0.0f;
-
-    const bool is_power = (power != 1.0f) && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double);
-    const TYPE v_clamped = (v_min < v_max) ? ImClamp(v, v_min, v_max) : ImClamp(v, v_max, v_min);
-    if (is_power)
-    {
-        if (v_clamped < 0.0f)
-        {
-            const float f = 1.0f - (float)((v_clamped - v_min) / (ImMin((TYPE)0, v_max) - v_min));
-            return (1.0f - ImPow(f, 1.0f/power)) * linear_zero_pos;
-        }
-        else
-        {
-            const float f = (float)((v_clamped - ImMax((TYPE)0, v_min)) / (v_max - ImMax((TYPE)0, v_min)));
-            return linear_zero_pos + ImPow(f, 1.0f/power) * (1.0f - linear_zero_pos);
-        }
-    }
-
-    // Linear slider
-    return (float)((FLOATTYPE)(v_clamped - v_min) / (FLOATTYPE)(v_max - v_min));
-}
-
-// FIXME: Move some of the code into SliderBehavior(). Current responsability is larger than what the equivalent DragBehaviorT<> does, we also do some rendering, etc.
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
-{
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const bool is_horizontal = (flags & ImGuiSliderFlags_Vertical) == 0;
-    const bool is_decimal = (data_type == ImGuiDataType_Float) || (data_type == ImGuiDataType_Double);
-    const bool is_power = (power != 1.0f) && is_decimal;
-
-    const float grab_padding = 2.0f;
-    const float slider_sz = is_horizontal ? (bb.GetWidth() - grab_padding * 2.0f) : (bb.GetHeight() - grab_padding * 2.0f);
-    float grab_sz = style.GrabMinSize;
-    SIGNEDTYPE v_range = (v_min < v_max ? v_max - v_min : v_min - v_max);
-    if (!is_decimal && v_range >= 0)                                             // v_range < 0 may happen on integer overflows
-        grab_sz = ImMax((float)(slider_sz / (v_range + 1)), style.GrabMinSize);  // For integer sliders: if possible have the grab size represent 1 unit
-    grab_sz = ImMin(grab_sz, slider_sz);
-    const float slider_usable_sz = slider_sz - grab_sz;
-    const float slider_usable_pos_min = (is_horizontal ? bb.Min.x : bb.Min.y) + grab_padding + grab_sz*0.5f;
-    const float slider_usable_pos_max = (is_horizontal ? bb.Max.x : bb.Max.y) - grab_padding - grab_sz*0.5f;
-
-    // For power curve sliders that cross over sign boundary we want the curve to be symmetric around 0.0f
-    float linear_zero_pos;   // 0.0->1.0f
-    if (is_power && v_min * v_max < 0.0f)
-    {
-        // Different sign
-        const FLOATTYPE linear_dist_min_to_0 = ImPow(v_min >= 0 ? (FLOATTYPE)v_min : -(FLOATTYPE)v_min, (FLOATTYPE)1.0f/power);
-        const FLOATTYPE linear_dist_max_to_0 = ImPow(v_max >= 0 ? (FLOATTYPE)v_max : -(FLOATTYPE)v_max, (FLOATTYPE)1.0f/power);
-        linear_zero_pos = (float)(linear_dist_min_to_0 / (linear_dist_min_to_0 + linear_dist_max_to_0));
-    }
-    else
-    {
-        // Same sign
-        linear_zero_pos = v_min < 0.0f ? 1.0f : 0.0f;
-    }
-
-    // Process interacting with the slider
-    bool value_changed = false;
-    if (g.ActiveId == id)
-    {
-        bool set_new_value = false;
-        float clicked_t = 0.0f;
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
-        {
-            if (!g.IO.MouseDown[0])
-            {
-                ClearActiveID();
-            }
-            else
-            {
-                const float mouse_abs_pos = is_horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
-                clicked_t = (slider_usable_sz > 0.0f) ? ImClamp((mouse_abs_pos - slider_usable_pos_min) / slider_usable_sz, 0.0f, 1.0f) : 0.0f;
-                if (!is_horizontal)
-                    clicked_t = 1.0f - clicked_t;
-                set_new_value = true;
-            }
-        }
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-        {
-            const ImVec2 delta2 = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard | ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 0.0f, 0.0f);
-            float delta = is_horizontal ? delta2.x : -delta2.y;
-            if (g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
-            {
-                ClearActiveID();
-            }
-            else if (delta != 0.0f)
-            {
-                clicked_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
-                const int decimal_precision = is_decimal ? ImParseFormatPrecision(format, 3) : 0;
-                if ((decimal_precision > 0) || is_power)
-                {
-                    delta /= 100.0f;    // Gamepad/keyboard tweak speeds in % of slider bounds
-                    if (IsNavInputDown(ImGuiNavInput_TweakSlow))
-                        delta /= 10.0f;
-                }
-                else
-                {
-                    if ((v_range >= -100.0f && v_range <= 100.0f) || IsNavInputDown(ImGuiNavInput_TweakSlow))
-                        delta = ((delta < 0.0f) ? -1.0f : +1.0f) / (float)v_range; // Gamepad/keyboard tweak speeds in integer steps
-                    else
-                        delta /= 100.0f;
-                }
-                if (IsNavInputDown(ImGuiNavInput_TweakFast))
-                    delta *= 10.0f;
-                set_new_value = true;
-                if ((clicked_t >= 1.0f && delta > 0.0f) || (clicked_t <= 0.0f && delta < 0.0f)) // This is to avoid applying the saturation when already past the limits
-                    set_new_value = false;
-                else
-                    clicked_t = ImSaturate(clicked_t + delta);
-            }
-        }
-
-        if (set_new_value)
-        {
-            TYPE v_new;
-            if (is_power)
-            {
-                // Account for power curve scale on both sides of the zero
-                if (clicked_t < linear_zero_pos)
-                {
-                    // Negative: rescale to the negative range before powering
-                    float a = 1.0f - (clicked_t / linear_zero_pos);
-                    a = ImPow(a, power);
-                    v_new = ImLerp(ImMin(v_max, (TYPE)0), v_min, a);
-                }
-                else
-                {
-                    // Positive: rescale to the positive range before powering
-                    float a;
-                    if (ImFabs(linear_zero_pos - 1.0f) > 1.e-6f)
-                        a = (clicked_t - linear_zero_pos) / (1.0f - linear_zero_pos);
-                    else
-                        a = clicked_t;
-                    a = ImPow(a, power);
-                    v_new = ImLerp(ImMax(v_min, (TYPE)0), v_max, a);
-                }
-            }
-            else
-            {
-                // Linear slider
-                if (is_decimal)
-                {
-                    v_new = ImLerp(v_min, v_max, clicked_t);
-                }
-                else
-                {
-                    // For integer values we want the clicking position to match the grab box so we round above
-                    // This code is carefully tuned to work with large values (e.g. high ranges of U64) while preserving this property..
-                    FLOATTYPE v_new_off_f = (v_max - v_min) * clicked_t;
-                    TYPE v_new_off_floor = (TYPE)(v_new_off_f);
-                    TYPE v_new_off_round = (TYPE)(v_new_off_f + (FLOATTYPE)0.5);
-                    if (!is_decimal && v_new_off_floor < v_new_off_round)
-                        v_new = v_min + v_new_off_round;
-                    else
-                        v_new = v_min + v_new_off_floor;
-                }
-            }
-
-            // Round to user desired precision based on format string
-            v_new = RoundScalarWithFormat<TYPE,SIGNEDTYPE>(format, data_type, v_new);
-
-            // Apply result
-            if (*v != v_new)
-            {
-                *v = v_new;
-                value_changed = true;
-            }
-        }
-    }
-
-    // Output grab position so it can be displayed by the caller
-    float grab_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
-    if (!is_horizontal)
-        grab_t = 1.0f - grab_t;
-    const float grab_pos = ImLerp(slider_usable_pos_min, slider_usable_pos_max, grab_t);
-    if (is_horizontal)
-        *out_grab_bb = ImRect(grab_pos - grab_sz*0.5f, bb.Min.y + grab_padding, grab_pos + grab_sz*0.5f, bb.Max.y - grab_padding);
-    else
-        *out_grab_bb = ImRect(bb.Min.x + grab_padding, grab_pos - grab_sz*0.5f, bb.Max.x - grab_padding, grab_pos + grab_sz*0.5f);
-
-    return value_changed;
-}
-
-// For 32-bits and larger types, slider bounds are limited to half the natural type range.
-// So e.g. an integer Slider between INT_MAX-10 and INT_MAX will fail, but an integer Slider between INT_MAX/2-10 and INT_MAX/2 will be ok.
-// It would be possible to lift that limitation with some work but it doesn't seem to be worth it for sliders.
-bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
-{
-    switch (data_type)
-    {
-    case ImGuiDataType_S32:
-        IM_ASSERT(*(const ImS32*)v_min >= IM_S32_MIN/2 && *(const ImS32*)v_max <= IM_S32_MAX/2);
-        return SliderBehaviorT<ImS32, ImS32, float >(bb, id, data_type, (ImS32*)v,  *(const ImS32*)v_min,  *(const ImS32*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_U32:
-        IM_ASSERT(*(const ImU32*)v_min <= IM_U32_MAX/2);
-        return SliderBehaviorT<ImU32, ImS32, float >(bb, id, data_type, (ImU32*)v,  *(const ImU32*)v_min,  *(const ImU32*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_S64:
-        IM_ASSERT(*(const ImS64*)v_min >= IM_S64_MIN/2 && *(const ImS64*)v_max <= IM_S64_MAX/2);
-        return SliderBehaviorT<ImS64, ImS64, double>(bb, id, data_type, (ImS64*)v,  *(const ImS64*)v_min,  *(const ImS64*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_U64:
-        IM_ASSERT(*(const ImU64*)v_min <= IM_U64_MAX/2);
-        return SliderBehaviorT<ImU64, ImS64, double>(bb, id, data_type, (ImU64*)v,  *(const ImU64*)v_min,  *(const ImU64*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_Float:
-        IM_ASSERT(*(const float*)v_min >= -FLT_MAX/2.0f && *(const float*)v_max <= FLT_MAX/2.0f);
-        return SliderBehaviorT<float, float, float >(bb, id, data_type, (float*)v,  *(const float*)v_min,  *(const float*)v_max,  format, power, flags, out_grab_bb);
-    case ImGuiDataType_Double:
-        IM_ASSERT(*(const double*)v_min >= -DBL_MAX/2.0f && *(const double*)v_max <= DBL_MAX/2.0f);
-        return SliderBehaviorT<double,double,double>(bb, id, data_type, (double*)v, *(const double*)v_min, *(const double*)v_max, format, power, flags, out_grab_bb);
-    case ImGuiDataType_COUNT: break;
-    }
-    IM_ASSERT(0);
-    return false;
-}
-
-// FIXME-LEGACY: Prior to 1.61 our DragInt() function internally used floats and because of this the compile-time default value for format was "%.0f".
-// Even though we changed the compile-time default, we expect users to have carried %f around, which would break the display of DragInt() calls.
-// To honor backward compatibility we are rewriting the format string, unless IMGUI_DISABLE_OBSOLETE_FUNCTIONS is enabled. What could possibly go wrong?!
-static const char* PatchFormatStringFloatToInt(const char* fmt)
-{
-    if (fmt[0] == '%' && fmt[1] == '.' && fmt[2] == '0' && fmt[3] == 'f' && fmt[4] == 0) // Fast legacy path for "%.0f" which is expected to be the most common case.
-        return "%d";
-    const char* fmt_start = ImParseFormatFindStart(fmt);    // Find % (if any, and ignore %%)
-    const char* fmt_end = ImParseFormatFindEnd(fmt_start);  // Find end of format specifier, which itself is an exercise of confidence/recklessness (because snprintf is dependent on libc or user).
-    if (fmt_end > fmt_start && fmt_end[-1] == 'f')
-    {
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-        if (fmt_start == fmt && fmt_end[0] == 0)
-            return "%d";
-        ImGuiContext& g = *GImGui;
-        ImFormatString(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), "%.*s%%d%s", (int)(fmt_start - fmt), fmt, fmt_end); // Honor leading and trailing decorations, but lose alignment/precision.
-        return g.TempBuffer;
-#else
-        IM_ASSERT(0 && "DragInt(): Invalid format string!"); // Old versions used a default parameter of "%.0f", please replace with e.g. "%d"
-#endif
-    }
-    return fmt;
-}
-
-bool ImGui::SliderScalar(const char* label, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
-    if (!ItemAdd(total_bb, id, &frame_bb))
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        return false;
-    }
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    // Tabbing or CTRL-clicking on Slider turns it into an input box
-    bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, id);
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if (tab_focus_requested || (hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        if (tab_focus_requested || g.IO.KeyCtrl || g.NavInputId == id)
-        {
-            start_text_input = true;
-            g.ScalarAsInputTextId = 0;
-        }
-    }
-    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
-        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
-
-    ItemSize(total_bb, style.FramePadding.y);
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
-
-    // Slider behavior
-    ImRect grab_bb;
-    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_None, &grab_bb);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Render grab
-    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.5f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalar(label, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
-}
-
-bool ImGui::VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(frame_bb, id))
-        return false;
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if ((hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || g.NavInputId == id)
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right);
-    }
-
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
-
-    // Slider behavior
-    ImRect grab_bb;
-    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_Vertical, &grab_bb);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Render grab
-    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    // For the vertical slider we allow centered text to overlap the frame padding
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.0f));
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::SliderAngle(const char* label, float* v_rad, float v_degrees_min, float v_degrees_max)
-{
-    float v_deg = (*v_rad) * 360.0f / (2*IM_PI);
-    bool value_changed = SliderFloat(label, &v_deg, v_degrees_min, v_degrees_max, "%.0f deg", 1.0f);
-    *v_rad = v_deg * (2*IM_PI) / 360.0f;
-    return value_changed;
-}
-
-bool ImGui::SliderInt(const char* label, int* v, int v_min, int v_max, const char* format)
-{
-    return SliderScalar(label, ImGuiDataType_S32, v, &v_min, &v_max, format);
-}
-
-bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* format, float power)
-{
-    return VSliderScalar(label, size, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
-}
-
-bool ImGui::VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format)
-{
-    return VSliderScalar(label, size, ImGuiDataType_S32, v, &v_min, &v_max, format);
-}
-
-// Add multiple sliders on 1 line for compact edition of multiple components
-bool ImGui::SliderScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= SliderScalar("##v", data_type, v, v_min, v_max, format, power);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 2, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 3, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* format, float power)
-{
-    return SliderScalarN(label, ImGuiDataType_Float, v, 4, &v_min, &v_max, format, power);
-}
-
-bool ImGui::SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 2, &v_min, &v_max, format);
-}
-
-bool ImGui::SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 3, &v_min, &v_max, format);
-}
-
-bool ImGui::SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* format)
-{
-    return SliderScalarN(label, ImGuiDataType_S32, v, 4, &v_min, &v_max, format);
-}
-
-// This is called by DragBehavior() when the widget is active (held by mouse or being manipulated with Nav controls)
-template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
-static bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power)
-{
-    ImGuiContext& g = *GImGui;
-
-    // Default tweak speed
-    bool has_min_max = (v_min != v_max) && (v_max - v_max < FLT_MAX);
-    if (v_speed == 0.0f && has_min_max)
-        v_speed = (float)((v_max - v_min) * g.DragSpeedDefaultRatio);
-
-    // Inputs accumulates into g.DragCurrentAccum, which is flushed into the current value as soon as it makes a difference with our precision settings
-    float adjust_delta = 0.0f;
-    if (g.ActiveIdSource == ImGuiInputSource_Mouse && IsMousePosValid() && g.IO.MouseDragMaxDistanceSqr[0] > 1.0f*1.0f)
-    {
-        adjust_delta = g.IO.MouseDelta.x;
-        if (g.IO.KeyAlt)
-            adjust_delta *= 1.0f/100.0f;
-        if (g.IO.KeyShift)
-            adjust_delta *= 10.0f;
-    }
-    else if (g.ActiveIdSource == ImGuiInputSource_Nav)
-    {
-        int decimal_precision = (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImParseFormatPrecision(format, 3) : 0;
-        adjust_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard|ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 1.0f/10.0f, 10.0f).x;
-        v_speed = ImMax(v_speed, GetMinimumStepAtDecimalPrecision(decimal_precision));
-    }
-    adjust_delta *= v_speed;
-
-    // Clear current value on activation
-    // Avoid altering values and clamping when we are _already_ past the limits and heading in the same direction, so e.g. if range is 0..255, current value is 300 and we are pushing to the right side, keep the 300.
-    bool is_just_activated = g.ActiveIdIsJustActivated;
-    bool is_already_past_limits_and_pushing_outward = has_min_max && ((*v >= v_max && adjust_delta > 0.0f) || (*v <= v_min && adjust_delta < 0.0f));
-    if (is_just_activated || is_already_past_limits_and_pushing_outward)
-    {
-        g.DragCurrentAccum = 0.0f;
-        g.DragCurrentAccumDirty = false;
-    }
-    else if (adjust_delta != 0.0f)
-    {
-        g.DragCurrentAccum += adjust_delta;
-        g.DragCurrentAccumDirty = true;
-    }
-
-    if (!g.DragCurrentAccumDirty)
-        return false;
-
-    TYPE v_cur = *v;
-    FLOATTYPE v_old_ref_for_accum_remainder = (FLOATTYPE)0.0f;
-
-    const bool is_power = (power != 1.0f && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) && has_min_max);
-    if (is_power)
-    {
-        // Offset + round to user desired precision, with a curve on the v_min..v_max range to get more precision on one side of the range
-        FLOATTYPE v_old_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
-        FLOATTYPE v_new_norm_curved = v_old_norm_curved + (g.DragCurrentAccum / (v_max - v_min));
-        v_cur = v_min + (TYPE)ImPow(ImSaturate((float)v_new_norm_curved), power) * (v_max - v_min);
-        v_old_ref_for_accum_remainder = v_old_norm_curved;
-    }
-    else
-    {
-        v_cur += (TYPE)g.DragCurrentAccum;
-    }
-
-    // Round to user desired precision based on format string
-    v_cur = RoundScalarWithFormat<TYPE, SIGNEDTYPE>(format, data_type, v_cur);
-
-    // Preserve remainder after rounding has been applied. This also allow slow tweaking of values.
-    g.DragCurrentAccumDirty = false;
-    if (is_power)
-    {
-        FLOATTYPE v_cur_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
-        g.DragCurrentAccum -= (float)(v_cur_norm_curved - v_old_ref_for_accum_remainder);
-    }
-    else
-    {
-        g.DragCurrentAccum -= (float)((SIGNEDTYPE)v_cur - (SIGNEDTYPE)*v);
-    }
-
-    // Lose zero sign for float/double
-    if (v_cur == (TYPE)-0)
-        v_cur = (TYPE)0;
-
-    // Clamp values (handle overflow/wrap-around)
-    if (*v != v_cur && has_min_max)
-    {
-        if (v_cur < v_min || (v_cur > *v && adjust_delta < 0.0f))
-            v_cur = v_min;
-        if (v_cur > v_max || (v_cur < *v && adjust_delta > 0.0f))
-            v_cur = v_max;
-    }
-
-    // Apply result
-    if (*v == v_cur)
-        return false;
-    *v = v_cur;
-    return true;
-}
-
-bool ImGui::DragBehavior(ImGuiID id, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiContext& g = *GImGui;
-    if (g.ActiveId == id)
-    {
-        if (g.ActiveIdSource == ImGuiInputSource_Mouse && !g.IO.MouseDown[0])
-            ClearActiveID();
-        else if (g.ActiveIdSource == ImGuiInputSource_Nav && g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
-            ClearActiveID();
-    }
-    if (g.ActiveId != id)
-        return false;
-
-    switch (data_type)
-    {
-    case ImGuiDataType_S32:    return DragBehaviorT<ImS32, ImS32, float >(data_type, (ImS32*)v,  v_speed, v_min ? *(const ImS32* )v_min : IM_S32_MIN, v_max ? *(const ImS32* )v_max : IM_S32_MAX, format, power);
-    case ImGuiDataType_U32:    return DragBehaviorT<ImU32, ImS32, float >(data_type, (ImU32*)v,  v_speed, v_min ? *(const ImU32* )v_min : IM_U32_MIN, v_max ? *(const ImU32* )v_max : IM_U32_MAX, format, power);
-    case ImGuiDataType_S64:    return DragBehaviorT<ImS64, ImS64, double>(data_type, (ImS64*)v,  v_speed, v_min ? *(const ImS64* )v_min : IM_S64_MIN, v_max ? *(const ImS64* )v_max : IM_S64_MAX, format, power);
-    case ImGuiDataType_U64:    return DragBehaviorT<ImU64, ImS64, double>(data_type, (ImU64*)v,  v_speed, v_min ? *(const ImU64* )v_min : IM_U64_MIN, v_max ? *(const ImU64* )v_max : IM_U64_MAX, format, power);
-    case ImGuiDataType_Float:  return DragBehaviorT<float, float, float >(data_type, (float*)v,  v_speed, v_min ? *(const float* )v_min : -FLT_MAX,   v_max ? *(const float* )v_max : FLT_MAX,    format, power);
-    case ImGuiDataType_Double: return DragBehaviorT<double,double,double>(data_type, (double*)v, v_speed, v_min ? *(const double*)v_min : -DBL_MAX,   v_max ? *(const double*)v_max : DBL_MAX,    format, power);
-    case ImGuiDataType_COUNT:  break;
-    }
-    IM_ASSERT(0);
-    return false;
-}
-
-bool ImGui::DragScalar(const char* label, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    if (power != 1.0f)
-        IM_ASSERT(v_min != NULL && v_max != NULL); // When using a power curve the drag needs to have known bounds
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const float w = CalcItemWidth();
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-
-    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
-    if (!ItemAdd(total_bb, id, &frame_bb))
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        return false;
-    }
-    const bool hovered = ItemHoverable(frame_bb, id);
-
-    // Default format string when passing NULL
-    // Patch old "%.0f" format string to use "%d", read function comments for more details.
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
-        format = PatchFormatStringFloatToInt(format);
-
-    // Tabbing or CTRL-clicking on Drag turns it into an input box
-    bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, id);
-    if (tab_focus_requested || (hovered && (g.IO.MouseClicked[0] || g.IO.MouseDoubleClicked[0])) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
-    {
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
-        if (tab_focus_requested || g.IO.KeyCtrl || g.IO.MouseDoubleClicked[0] || g.NavInputId == id)
-        {
-            start_text_input = true;
-            g.ScalarAsInputTextId = 0;
-        }
-    }
-    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
-        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
-
-    // Actual drag behavior
-    ItemSize(total_bb, style.FramePadding.y);
-    const bool value_changed = DragBehavior(id, data_type, v, v_speed, v_min, v_max, format, power);
-    if (value_changed)
-        MarkItemEdited(id);
-
-    // Draw frame
-    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, style.FrameRounding);
-
-    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
-    char value_buf[64];
-    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
-    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f, 0.5f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
-
-    return value_changed;
-}
-
-bool ImGui::DragScalarN(const char* label, ImGuiDataType data_type, void* v, int components, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= DragScalar("##v", data_type, v, v_speed, v_min, v_max, format, power);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::DragFloat(const char* label, float* v, float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalar(label, ImGuiDataType_Float, v, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat2(const char* label, float v[2], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 2, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat3(const char* label, float v[3], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 3, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloat4(const char* label, float v[4], float v_speed, float v_min, float v_max, const char* format, float power)
-{
-    return DragScalarN(label, ImGuiDataType_Float, v, 4, v_speed, &v_min, &v_max, format, power);
-}
-
-bool ImGui::DragFloatRange2(const char* label, float* v_current_min, float* v_current_max, float v_speed, float v_min, float v_max, const char* format, const char* format_max, float power)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    PushID(label);
-    BeginGroup();
-    PushMultiItemsWidths(2);
-
-    bool value_changed = DragFloat("##min", v_current_min, v_speed, (v_min >= v_max) ? -FLT_MAX : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format, power);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-    value_changed |= DragFloat("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? FLT_MAX : v_max, format_max ? format_max : format, power);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    PopID();
-    return value_changed;
-}
-
-// NB: v_speed is float to allow adjusting the drag speed with more precision
-bool ImGui::DragInt(const char* label, int* v, float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalar(label, ImGuiDataType_S32, v, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt2(const char* label, int v[2], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 2, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt3(const char* label, int v[3], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 3, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragInt4(const char* label, int v[4], float v_speed, int v_min, int v_max, const char* format)
-{
-    return DragScalarN(label, ImGuiDataType_S32, v, 4, v_speed, &v_min, &v_max, format);
-}
-
-bool ImGui::DragIntRange2(const char* label, int* v_current_min, int* v_current_max, float v_speed, int v_min, int v_max, const char* format, const char* format_max)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    PushID(label);
-    BeginGroup();
-    PushMultiItemsWidths(2);
-
-    bool value_changed = DragInt("##min", v_current_min, v_speed, (v_min >= v_max) ? INT_MIN : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-    value_changed |= DragInt("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? INT_MAX : v_max, format_max ? format_max : format);
-    PopItemWidth();
-    SameLine(0, g.Style.ItemInnerSpacing.x);
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    PopID();
-
-    return value_changed;
-}
-
-void ImGui::PlotEx(ImGuiPlotType plot_type, const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    if (graph_size.x == 0.0f)
-        graph_size.x = CalcItemWidth();
-    if (graph_size.y == 0.0f)
-        graph_size.y = label_size.y + (style.FramePadding.y * 2);
-
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(graph_size.x, graph_size.y));
-    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0));
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, 0, &frame_bb))
-        return;
-    const bool hovered = ItemHoverable(inner_bb, 0);
-
-    // Determine scale from values if not specified
-    if (scale_min == FLT_MAX || scale_max == FLT_MAX)
-    {
-        float v_min = FLT_MAX;
-        float v_max = -FLT_MAX;
-        for (int i = 0; i < values_count; i++)
-        {
-            const float v = values_getter(data, i);
-            v_min = ImMin(v_min, v);
-            v_max = ImMax(v_max, v);
-        }
-        if (scale_min == FLT_MAX)
-            scale_min = v_min;
-        if (scale_max == FLT_MAX)
-            scale_max = v_max;
-    }
-
-    RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-
-    if (values_count > 0)
-    {
-        int res_w = ImMin((int)graph_size.x, values_count) + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
-        int item_count = values_count + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
-
-        // Tooltip on hover
-        int v_hovered = -1;
-        if (hovered)
-        {
-            const float t = ImClamp((g.IO.MousePos.x - inner_bb.Min.x) / (inner_bb.Max.x - inner_bb.Min.x), 0.0f, 0.9999f);
-            const int v_idx = (int)(t * item_count);
-            IM_ASSERT(v_idx >= 0 && v_idx < values_count);
-
-            const float v0 = values_getter(data, (v_idx + values_offset) % values_count);
-            const float v1 = values_getter(data, (v_idx + 1 + values_offset) % values_count);
-            if (plot_type == ImGuiPlotType_Lines)
-                SetTooltip("%d: %8.4g\n%d: %8.4g", v_idx, v0, v_idx+1, v1);
-            else if (plot_type == ImGuiPlotType_Histogram)
-                SetTooltip("%d: %8.4g", v_idx, v0);
-            v_hovered = v_idx;
-        }
-
-        const float t_step = 1.0f / (float)res_w;
-        const float inv_scale = (scale_min == scale_max) ? 0.0f : (1.0f / (scale_max - scale_min));
-
-        float v0 = values_getter(data, (0 + values_offset) % values_count);
-        float t0 = 0.0f;
-        ImVec2 tp0 = ImVec2( t0, 1.0f - ImSaturate((v0 - scale_min) * inv_scale) );                       // Point in the normalized space of our target rectangle
-        float histogram_zero_line_t = (scale_min * scale_max < 0.0f) ? (-scale_min * inv_scale) : (scale_min < 0.0f ? 0.0f : 1.0f);   // Where does the zero line stands
-
-        const ImU32 col_base = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLines : ImGuiCol_PlotHistogram);
-        const ImU32 col_hovered = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLinesHovered : ImGuiCol_PlotHistogramHovered);
-
-        for (int n = 0; n < res_w; n++)
-        {
-            const float t1 = t0 + t_step;
-            const int v1_idx = (int)(t0 * item_count + 0.5f);
-            IM_ASSERT(v1_idx >= 0 && v1_idx < values_count);
-            const float v1 = values_getter(data, (v1_idx + values_offset + 1) % values_count);
-            const ImVec2 tp1 = ImVec2( t1, 1.0f - ImSaturate((v1 - scale_min) * inv_scale) );
-
-            // NB: Draw calls are merged together by the DrawList system. Still, we should render our batch are lower level to save a bit of CPU.
-            ImVec2 pos0 = ImLerp(inner_bb.Min, inner_bb.Max, tp0);
-            ImVec2 pos1 = ImLerp(inner_bb.Min, inner_bb.Max, (plot_type == ImGuiPlotType_Lines) ? tp1 : ImVec2(tp1.x, histogram_zero_line_t));
-            if (plot_type == ImGuiPlotType_Lines)
-            {
-                window->DrawList->AddLine(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
-            }
-            else if (plot_type == ImGuiPlotType_Histogram)
-            {
-                if (pos1.x >= pos0.x + 2.0f)
-                    pos1.x -= 1.0f;
-                window->DrawList->AddRectFilled(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
-            }
-
-            t0 = t1;
-            tp0 = tp1;
-        }
-    }
-
-    // Text overlay
-    if (overlay_text)
-        RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, overlay_text, NULL, NULL, ImVec2(0.5f,0.0f));
-
-    if (label_size.x > 0.0f)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
-}
-
-struct ImGuiPlotArrayGetterData
-{
-    const float* Values;
-    int Stride;
-
-    ImGuiPlotArrayGetterData(const float* values, int stride) { Values = values; Stride = stride; }
-};
-
-static float Plot_ArrayGetter(void* data, int idx)
-{
-    ImGuiPlotArrayGetterData* plot_data = (ImGuiPlotArrayGetterData*)data;
-    const float v = *(const float*)(const void*)((const unsigned char*)plot_data->Values + (size_t)idx * plot_data->Stride);
-    return v;
-}
-
-void ImGui::PlotLines(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
-{
-    ImGuiPlotArrayGetterData data(values, stride);
-    PlotEx(ImGuiPlotType_Lines, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotLines(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    PlotEx(ImGuiPlotType_Lines, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotHistogram(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
-{
-    ImGuiPlotArrayGetterData data(values, stride);
-    PlotEx(ImGuiPlotType_Histogram, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-void ImGui::PlotHistogram(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
-{
-    PlotEx(ImGuiPlotType_Histogram, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
-}
-
-// size_arg (for each axis) < 0.0f: align to end, 0.0f: auto, > 0.0f: specified size
-void ImGui::ProgressBar(float fraction, const ImVec2& size_arg, const char* overlay)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    ImVec2 pos = window->DC.CursorPos;
-    ImRect bb(pos, pos + CalcItemSize(size_arg, CalcItemWidth(), g.FontSize + style.FramePadding.y*2.0f));
-    ItemSize(bb, style.FramePadding.y);
-    if (!ItemAdd(bb, 0))
-        return;
-
-    // Render
-    fraction = ImSaturate(fraction);
-    RenderFrame(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-    bb.Expand(ImVec2(-style.FrameBorderSize, -style.FrameBorderSize));
-    const ImVec2 fill_br = ImVec2(ImLerp(bb.Min.x, bb.Max.x, fraction), bb.Max.y);
-    RenderRectFilledRangeH(window->DrawList, bb, GetColorU32(ImGuiCol_PlotHistogram), 0.0f, fraction, style.FrameRounding);
-
-    // Default displaying the fraction as percentage string, but user can override it
-    char overlay_buf[32];
-    if (!overlay)
-    {
-        ImFormatString(overlay_buf, IM_ARRAYSIZE(overlay_buf), "%.0f%%", fraction*100+0.01f);
-        overlay = overlay_buf;
-    }
-
-    ImVec2 overlay_size = CalcTextSize(overlay, NULL);
-    if (overlay_size.x > 0.0f)
-        RenderTextClipped(ImVec2(ImClamp(fill_br.x + style.ItemSpacing.x, bb.Min.x, bb.Max.x - overlay_size.x - style.ItemInnerSpacing.x), bb.Min.y), bb.Max, overlay, NULL, &overlay_size, ImVec2(0.0f,0.5f), &bb);
-}
-
-bool ImGui::Checkbox(const char* label, bool* v)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2, label_size.y + style.FramePadding.y*2)); // We want a square shape to we use Y twice
-    ItemSize(check_bb, style.FramePadding.y);
-
-    ImRect total_bb = check_bb;
-    if (label_size.x > 0)
-        SameLine(0, style.ItemInnerSpacing.x);
-    const ImRect text_bb(window->DC.CursorPos + ImVec2(0,style.FramePadding.y), window->DC.CursorPos + ImVec2(0,style.FramePadding.y) + label_size);
-    if (label_size.x > 0)
-    {
-        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
-        total_bb = ImRect(ImMin(check_bb.Min, text_bb.Min), ImMax(check_bb.Max, text_bb.Max));
-    }
-
-    if (!ItemAdd(total_bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
-    if (pressed)
-    {
-        *v = !(*v);
-        MarkItemEdited(id);
-    }
-
-    RenderNavHighlight(total_bb, id);
-    RenderFrame(check_bb.Min, check_bb.Max, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), true, style.FrameRounding);
-    if (*v)
-    {
-        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
-        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
-        RenderCheckMark(check_bb.Min + ImVec2(pad,pad), GetColorU32(ImGuiCol_CheckMark), check_bb.GetWidth() - pad*2.0f);
-    }
-
-    if (g.LogEnabled)
-        LogRenderedText(&text_bb.Min, *v ? "[x]" : "[ ]");
-    if (label_size.x > 0.0f)
-        RenderText(text_bb.Min, label);
-
-    return pressed;
-}
-
-bool ImGui::CheckboxFlags(const char* label, unsigned int* flags, unsigned int flags_value)
-{
-    bool v = ((*flags & flags_value) == flags_value);
-    bool pressed = Checkbox(label, &v);
-    if (pressed)
-    {
-        if (v)
-            *flags |= flags_value;
-        else
-            *flags &= ~flags_value;
-    }
-
-    return pressed;
-}
-
-bool ImGui::RadioButton(const char* label, bool active)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2-1, label_size.y + style.FramePadding.y*2-1));
-    ItemSize(check_bb, style.FramePadding.y);
-
-    ImRect total_bb = check_bb;
-    if (label_size.x > 0)
-        SameLine(0, style.ItemInnerSpacing.x);
-    const ImRect text_bb(window->DC.CursorPos + ImVec2(0, style.FramePadding.y), window->DC.CursorPos + ImVec2(0, style.FramePadding.y) + label_size);
-    if (label_size.x > 0)
-    {
-        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
-        total_bb.Add(text_bb);
-    }
-
-    if (!ItemAdd(total_bb, id))
-        return false;
-
-    ImVec2 center = check_bb.GetCenter();
-    center.x = (float)(int)center.x + 0.5f;
-    center.y = (float)(int)center.y + 0.5f;
-    const float radius = check_bb.GetHeight() * 0.5f;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
-    if (pressed)
-        MarkItemEdited(id);
-
-    RenderNavHighlight(total_bb, id);
-    window->DrawList->AddCircleFilled(center, radius, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), 16);
-    if (active)
-    {
-        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
-        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
-        window->DrawList->AddCircleFilled(center, radius-pad, GetColorU32(ImGuiCol_CheckMark), 16);
-    }
-
-    if (style.FrameBorderSize > 0.0f)
-    {
-        window->DrawList->AddCircle(center+ImVec2(1,1), radius, GetColorU32(ImGuiCol_BorderShadow), 16, style.FrameBorderSize);
-        window->DrawList->AddCircle(center, radius, GetColorU32(ImGuiCol_Border), 16, style.FrameBorderSize);
-    }
-
-    if (g.LogEnabled)
-        LogRenderedText(&text_bb.Min, active ? "(x)" : "( )");
-    if (label_size.x > 0.0f)
-        RenderText(text_bb.Min, label);
-
-    return pressed;
-}
-
-bool ImGui::RadioButton(const char* label, int* v, int v_button)
-{
-    const bool pressed = RadioButton(label, *v == v_button);
-    if (pressed)
-        *v = v_button;
-    return pressed;
-}
-
-static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end)
-{
-    int line_count = 0;
-    const char* s = text_begin;
-    while (char c = *s++) // We are only matching for \n so we can ignore UTF-8 decoding
-        if (c == '\n')
-            line_count++;
-    s--;
-    if (s[0] != '\n' && s[0] != '\r')
-        line_count++;
-    *out_text_end = s;
-    return line_count;
-}
-
-static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining, ImVec2* out_offset, bool stop_on_new_line)
-{
-    ImFont* font = GImGui->Font;
-    const float line_height = GImGui->FontSize;
-    const float scale = line_height / font->FontSize;
-
-    ImVec2 text_size = ImVec2(0,0);
-    float line_width = 0.0f;
-
-    const ImWchar* s = text_begin;
-    while (s < text_end)
-    {
-        unsigned int c = (unsigned int)(*s++);
-        if (c == '\n')
-        {
-            text_size.x = ImMax(text_size.x, line_width);
-            text_size.y += line_height;
-            line_width = 0.0f;
-            if (stop_on_new_line)
-                break;
-            continue;
-        }
-        if (c == '\r')
-            continue;
-
-        const float char_width = font->GetCharAdvance((unsigned short)c) * scale;
-        line_width += char_width;
-    }
-
-    if (text_size.x < line_width)
-        text_size.x = line_width;
-
-    if (out_offset)
-        *out_offset = ImVec2(line_width, text_size.y + line_height);  // offset allow for the possibility of sitting after a trailing \n
-
-    if (line_width > 0 || text_size.y == 0.0f)                        // whereas size.y will ignore the trailing \n
-        text_size.y += line_height;
-
-    if (remaining)
-        *remaining = s;
-
-    return text_size;
-}
-
-// Wrapper for stb_textedit.h to edit text (our wrapper is for: statically sized buffer, single-line, wchar characters. InputText converts between UTF-8 and wchar)
-namespace ImGuiStb
-{
-
-static int     STB_TEXTEDIT_STRINGLEN(const STB_TEXTEDIT_STRING* obj)                             { return obj->CurLenW; }
-static ImWchar STB_TEXTEDIT_GETCHAR(const STB_TEXTEDIT_STRING* obj, int idx)                      { return obj->TextW[idx]; }
-static float   STB_TEXTEDIT_GETWIDTH(STB_TEXTEDIT_STRING* obj, int line_start_idx, int char_idx)  { ImWchar c = obj->TextW[line_start_idx+char_idx]; if (c == '\n') return STB_TEXTEDIT_GETWIDTH_NEWLINE; return GImGui->Font->GetCharAdvance(c) * (GImGui->FontSize / GImGui->Font->FontSize); }
-static int     STB_TEXTEDIT_KEYTOTEXT(int key)                                                    { return key >= 0x10000 ? 0 : key; }
-static ImWchar STB_TEXTEDIT_NEWLINE = '\n';
-static void    STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, STB_TEXTEDIT_STRING* obj, int line_start_idx)
-{
-    const ImWchar* text = obj->TextW.Data;
-    const ImWchar* text_remaining = NULL;
-    const ImVec2 size = InputTextCalcTextSizeW(text + line_start_idx, text + obj->CurLenW, &text_remaining, NULL, true);
-    r->x0 = 0.0f;
-    r->x1 = size.x;
-    r->baseline_y_delta = size.y;
-    r->ymin = 0.0f;
-    r->ymax = size.y;
-    r->num_chars = (int)(text_remaining - (text + line_start_idx));
-}
-
-static bool is_separator(unsigned int c)                                        { return ImCharIsBlankW(c) || c==',' || c==';' || c=='(' || c==')' || c=='{' || c=='}' || c=='[' || c==']' || c=='|'; }
-static int  is_word_boundary_from_right(STB_TEXTEDIT_STRING* obj, int idx)      { return idx > 0 ? (is_separator( obj->TextW[idx-1] ) && !is_separator( obj->TextW[idx] ) ) : 1; }
-static int  STB_TEXTEDIT_MOVEWORDLEFT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)   { idx--; while (idx >= 0 && !is_word_boundary_from_right(obj, idx)) idx--; return idx < 0 ? 0 : idx; }
-#ifdef __APPLE__    // FIXME: Move setting to IO structure
-static int  is_word_boundary_from_left(STB_TEXTEDIT_STRING* obj, int idx)       { return idx > 0 ? (!is_separator( obj->TextW[idx-1] ) && is_separator( obj->TextW[idx] ) ) : 1; }
-static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_left(obj, idx)) idx++; return idx > len ? len : idx; }
-#else
-static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_right(obj, idx)) idx++; return idx > len ? len : idx; }
-#endif
-#define STB_TEXTEDIT_MOVEWORDLEFT   STB_TEXTEDIT_MOVEWORDLEFT_IMPL    // They need to be #define for stb_textedit.h
-#define STB_TEXTEDIT_MOVEWORDRIGHT  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL
-
-static void STB_TEXTEDIT_DELETECHARS(STB_TEXTEDIT_STRING* obj, int pos, int n)
-{
-    ImWchar* dst = obj->TextW.Data + pos;
-
-    // We maintain our buffer length in both UTF-8 and wchar formats
-    obj->CurLenA -= ImTextCountUtf8BytesFromStr(dst, dst + n);
-    obj->CurLenW -= n;
-
-    // Offset remaining text
-    const ImWchar* src = obj->TextW.Data + pos + n;
-    while (ImWchar c = *src++)
-        *dst++ = c;
-    *dst = '\0';
-}
-
-static bool STB_TEXTEDIT_INSERTCHARS(STB_TEXTEDIT_STRING* obj, int pos, const ImWchar* new_text, int new_text_len)
-{
-    const bool is_resizable = (obj->UserFlags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int text_len = obj->CurLenW;
-    IM_ASSERT(pos <= text_len);
-
-    const int new_text_len_utf8 = ImTextCountUtf8BytesFromStr(new_text, new_text + new_text_len);
-    if (!is_resizable && (new_text_len_utf8 + obj->CurLenA + 1 > obj->BufCapacityA))
-        return false;
-
-    // Grow internal buffer if needed
-    if (new_text_len + text_len + 1 > obj->TextW.Size)
-    {
-        if (!is_resizable)
-            return false;
-        IM_ASSERT(text_len < obj->TextW.Size);
-        obj->TextW.resize(text_len + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1);
-    }
-
-    ImWchar* text = obj->TextW.Data;
-    if (pos != text_len)
-        memmove(text + pos + new_text_len, text + pos, (size_t)(text_len - pos) * sizeof(ImWchar));
-    memcpy(text + pos, new_text, (size_t)new_text_len * sizeof(ImWchar));
-
-    obj->CurLenW += new_text_len;
-    obj->CurLenA += new_text_len_utf8;
-    obj->TextW[obj->CurLenW] = '\0';
-
-    return true;
-}
-
-// We don't use an enum so we can build even with conflicting symbols (if another user of stb_textedit.h leak their STB_TEXTEDIT_K_* symbols)
-#define STB_TEXTEDIT_K_LEFT         0x10000 // keyboard input to move cursor left
-#define STB_TEXTEDIT_K_RIGHT        0x10001 // keyboard input to move cursor right
-#define STB_TEXTEDIT_K_UP           0x10002 // keyboard input to move cursor up
-#define STB_TEXTEDIT_K_DOWN         0x10003 // keyboard input to move cursor down
-#define STB_TEXTEDIT_K_LINESTART    0x10004 // keyboard input to move cursor to start of line
-#define STB_TEXTEDIT_K_LINEEND      0x10005 // keyboard input to move cursor to end of line
-#define STB_TEXTEDIT_K_TEXTSTART    0x10006 // keyboard input to move cursor to start of text
-#define STB_TEXTEDIT_K_TEXTEND      0x10007 // keyboard input to move cursor to end of text
-#define STB_TEXTEDIT_K_DELETE       0x10008 // keyboard input to delete selection or character under cursor
-#define STB_TEXTEDIT_K_BACKSPACE    0x10009 // keyboard input to delete selection or character left of cursor
-#define STB_TEXTEDIT_K_UNDO         0x1000A // keyboard input to perform undo
-#define STB_TEXTEDIT_K_REDO         0x1000B // keyboard input to perform redo
-#define STB_TEXTEDIT_K_WORDLEFT     0x1000C // keyboard input to move cursor left one word
-#define STB_TEXTEDIT_K_WORDRIGHT    0x1000D // keyboard input to move cursor right one word
-#define STB_TEXTEDIT_K_SHIFT        0x20000
-
-#define STB_TEXTEDIT_IMPLEMENTATION
-#include "stb_textedit.h"
-
-}
-
-void ImGuiInputTextState::OnKeyPressed(int key)
-{
-    stb_textedit_key(this, &StbState, key);
-    CursorFollow = true;
-    CursorAnimReset();
-}
-
-ImGuiInputTextCallbackData::ImGuiInputTextCallbackData()
-{
-    memset(this, 0, sizeof(*this));
-}
-
-// Public API to manipulate UTF-8 text
-// We expose UTF-8 to the user (unlike the STB_TEXTEDIT_* functions which are manipulating wchar)
-// FIXME: The existence of this rarely exercised code path is a bit of a nuisance.
-void ImGuiInputTextCallbackData::DeleteChars(int pos, int bytes_count)
-{
-    IM_ASSERT(pos + bytes_count <= BufTextLen);
-    char* dst = Buf + pos;
-    const char* src = Buf + pos + bytes_count;
-    while (char c = *src++)
-        *dst++ = c;
-    *dst = '\0';
-
-    if (CursorPos + bytes_count >= pos)
-        CursorPos -= bytes_count;
-    else if (CursorPos >= pos)
-        CursorPos = pos;
-    SelectionStart = SelectionEnd = CursorPos;
-    BufDirty = true;
-    BufTextLen -= bytes_count;
-}
-
-void ImGuiInputTextCallbackData::InsertChars(int pos, const char* new_text, const char* new_text_end)
-{
-    const bool is_resizable = (Flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int new_text_len = new_text_end ? (int)(new_text_end - new_text) : (int)strlen(new_text);
-    if (new_text_len + BufTextLen >= BufSize)
-    {
-        if (!is_resizable)
-            return;
-
-        // Contrary to STB_TEXTEDIT_INSERTCHARS() this is working in the UTF8 buffer, hence the midly similar code (until we remove the U16 buffer alltogether!)
-        ImGuiContext& g = *GImGui;
-        ImGuiInputTextState* edit_state = &g.InputTextState;
-        IM_ASSERT(edit_state->ID != 0 && g.ActiveId == edit_state->ID);
-        IM_ASSERT(Buf == edit_state->TempBuffer.Data);
-        int new_buf_size = BufTextLen + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1;
-        edit_state->TempBuffer.reserve(new_buf_size + 1);
-        Buf = edit_state->TempBuffer.Data;
-        BufSize = edit_state->BufCapacityA = new_buf_size;
-    }
-
-    if (BufTextLen != pos)
-        memmove(Buf + pos + new_text_len, Buf + pos, (size_t)(BufTextLen - pos));
-    memcpy(Buf + pos, new_text, (size_t)new_text_len * sizeof(char));
-    Buf[BufTextLen + new_text_len] = '\0';
-
-    if (CursorPos >= pos)
-        CursorPos += new_text_len;
-    SelectionStart = SelectionEnd = CursorPos;
-    BufDirty = true;
-    BufTextLen += new_text_len;
-}
-
-// Return false to discard a character.
-static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    unsigned int c = *p_char;
-
-    if (c < 128 && c != ' ' && !isprint((int)(c & 0xFF)))
-    {
-        bool pass = false;
-        pass |= (c == '\n' && (flags & ImGuiInputTextFlags_Multiline));
-        pass |= (c == '\t' && (flags & ImGuiInputTextFlags_AllowTabInput));
-        if (!pass)
-            return false;
-    }
-
-    if (c >= 0xE000 && c <= 0xF8FF) // Filter private Unicode range. I don't imagine anybody would want to input them. GLFW on OSX seems to send private characters for special keys like arrow keys.
-        return false;
-
-    if (flags & (ImGuiInputTextFlags_CharsDecimal | ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase | ImGuiInputTextFlags_CharsNoBlank | ImGuiInputTextFlags_CharsScientific))
-    {
-        if (flags & ImGuiInputTextFlags_CharsDecimal)
-            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsScientific)
-            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/') && (c != 'e') && (c != 'E'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsHexadecimal)
-            if (!(c >= '0' && c <= '9') && !(c >= 'a' && c <= 'f') && !(c >= 'A' && c <= 'F'))
-                return false;
-
-        if (flags & ImGuiInputTextFlags_CharsUppercase)
-            if (c >= 'a' && c <= 'z')
-                *p_char = (c += (unsigned int)('A'-'a'));
-
-        if (flags & ImGuiInputTextFlags_CharsNoBlank)
-            if (ImCharIsBlankW(c))
-                return false;
-    }
-
-    if (flags & ImGuiInputTextFlags_CallbackCharFilter)
-    {
-        ImGuiInputTextCallbackData callback_data;
-        memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
-        callback_data.EventFlag = ImGuiInputTextFlags_CallbackCharFilter;
-        callback_data.EventChar = (ImWchar)c;
-        callback_data.Flags = flags;
-        callback_data.UserData = user_data;
-        if (callback(&callback_data) != 0)
-            return false;
-        *p_char = callback_data.EventChar;
-        if (!callback_data.EventChar)
-            return false;
-    }
-
-    return true;
-}
-
-// Edit a string of text
-// - buf_size account for the zero-terminator, so a buf_size of 6 can hold "Hello" but not "Hello!".
-//   This is so we can easily call InputText() on static arrays using ARRAYSIZE() and to match 
-//   Note that in std::string world, capacity() would omit 1 byte used by the zero-terminator.
-// - When active, hold on a privately held copy of the text (and apply back to 'buf'). So changing 'buf' while the InputText is active has no effect.
-// - If you want to use ImGui::InputText() with std::string, see misc/stl/imgui_stl.h
-// (FIXME: Rather messy function partly because we are doing UTF8 > u16 > UTF8 conversions on the go to more easily handle stb_textedit calls. Ideally we should stay in UTF-8 all the time. See https://github.com/nothings/stb/issues/188)
-bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2& size_arg, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* callback_user_data)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackHistory) && (flags & ImGuiInputTextFlags_Multiline)));        // Can't use both together (they both use up/down keys)
-    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackCompletion) && (flags & ImGuiInputTextFlags_AllowTabInput))); // Can't use both together (they both use tab key)
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiIO& io = g.IO;
-    const ImGuiStyle& style = g.Style;
-
-    const bool is_multiline = (flags & ImGuiInputTextFlags_Multiline) != 0;
-    const bool is_editable = (flags & ImGuiInputTextFlags_ReadOnly) == 0;
-    const bool is_password = (flags & ImGuiInputTextFlags_Password) != 0;
-    const bool is_undoable = (flags & ImGuiInputTextFlags_NoUndoRedo) == 0;
-    const bool is_resizable = (flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    if (is_resizable)
-        IM_ASSERT(callback != NULL); // Must provide a callback if you set the ImGuiInputTextFlags_CallbackResize flag!
-
-    if (is_multiline) // Open group before calling GetID() because groups tracks id created within their scope, 
-        BeginGroup();
-    const ImGuiID id = window->GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), (is_multiline ? GetTextLineHeight() * 8.0f : label_size.y) + style.FramePadding.y*2.0f); // Arbitrary default of 8 lines high for multi-line
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? (style.ItemInnerSpacing.x + label_size.x) : 0.0f, 0.0f));
-
-    ImGuiWindow* draw_window = window;
-    if (is_multiline)
-    {
-        ItemAdd(total_bb, id, &frame_bb);
-        if (!BeginChildFrame(id, frame_bb.GetSize()))
-        {
-            EndChildFrame();
-            EndGroup();
-            return false;
-        }
-        draw_window = GetCurrentWindow();
-        draw_window->DC.NavLayerActiveMaskNext |= draw_window->DC.NavLayerCurrentMask; // This is to ensure that EndChild() will display a navigation highlight
-        size.x -= draw_window->ScrollbarSizes.x;
-    }
-    else
-    {
-        ItemSize(total_bb, style.FramePadding.y);
-        if (!ItemAdd(total_bb, id, &frame_bb))
-            return false;
-    }
-    const bool hovered = ItemHoverable(frame_bb, id);
-    if (hovered)
-        g.MouseCursor = ImGuiMouseCursor_TextInput;
-
-    // Password pushes a temporary font with only a fallback glyph
-    if (is_password)
-    {
-        const ImFontGlyph* glyph = g.Font->FindGlyph('*');
-        ImFont* password_font = &g.InputTextPasswordFont;
-        password_font->FontSize = g.Font->FontSize;
-        password_font->Scale = g.Font->Scale;
-        password_font->DisplayOffset = g.Font->DisplayOffset;
-        password_font->Ascent = g.Font->Ascent;
-        password_font->Descent = g.Font->Descent;
-        password_font->ContainerAtlas = g.Font->ContainerAtlas;
-        password_font->FallbackGlyph = glyph;
-        password_font->FallbackAdvanceX = glyph->AdvanceX;
-        IM_ASSERT(password_font->Glyphs.empty() && password_font->IndexAdvanceX.empty() && password_font->IndexLookup.empty());
-        PushFont(password_font);
-    }
-
-    // NB: we are only allowed to access 'edit_state' if we are the active widget.
-    ImGuiInputTextState& edit_state = g.InputTextState;
-
-    const bool focus_requested = FocusableItemRegister(window, id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0);    // Using completion callback disable keyboard tabbing
-    const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent);
-    const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code;
-
-    const bool user_clicked = hovered && io.MouseClicked[0];
-    const bool user_scrolled = is_multiline && g.ActiveId == 0 && edit_state.ID == id && g.ActiveIdPreviousFrame == draw_window->GetIDNoKeepAlive("#SCROLLY");
-    const bool user_nav_input_start = (g.ActiveId != id) && ((g.NavInputId == id) || (g.NavActivateId == id && g.NavInputSource == ImGuiInputSource_NavKeyboard));
-
-    bool clear_active_id = false;
-
-    bool select_all = (g.ActiveId != id) && ((flags & ImGuiInputTextFlags_AutoSelectAll) != 0 || user_nav_input_start) && (!is_multiline);
-    if (focus_requested || user_clicked || user_scrolled || user_nav_input_start)
-    {
-        if (g.ActiveId != id)
-        {
-            // Start edition
-            // Take a copy of the initial buffer value (both in original UTF-8 format and converted to wchar)
-            // From the moment we focused we are ignoring the content of 'buf' (unless we are in read-only mode)
-            const int prev_len_w = edit_state.CurLenW;
-            const int init_buf_len = (int)strlen(buf);
-            edit_state.TextW.resize(buf_size+1);             // wchar count <= UTF-8 count. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
-            edit_state.InitialText.resize(init_buf_len + 1); // UTF-8. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
-            memcpy(edit_state.InitialText.Data, buf, init_buf_len + 1);
-            const char* buf_end = NULL;
-            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, buf_size, buf, NULL, &buf_end);
-            edit_state.CurLenA = (int)(buf_end - buf); // We can't get the result from ImStrncpy() above because it is not UTF-8 aware. Here we'll cut off malformed UTF-8.
-            edit_state.CursorAnimReset();
-
-            // Preserve cursor position and undo/redo stack if we come back to same widget
-            // FIXME: We should probably compare the whole buffer to be on the safety side. Comparing buf (utf8) and edit_state.Text (wchar).
-            const bool recycle_state = (edit_state.ID == id) && (prev_len_w == edit_state.CurLenW);
-            if (recycle_state)
-            {
-                // Recycle existing cursor/selection/undo stack but clamp position
-                // Note a single mouse click will override the cursor/position immediately by calling stb_textedit_click handler.
-                edit_state.CursorClamp();
-            }
-            else
-            {
-                edit_state.ID = id;
-                edit_state.ScrollX = 0.0f;
-                stb_textedit_initialize_state(&edit_state.StbState, !is_multiline);
-                if (!is_multiline && focus_requested_by_code)
-                    select_all = true;
-            }
-            if (flags & ImGuiInputTextFlags_AlwaysInsertMode)
-                edit_state.StbState.insert_mode = true;
-            if (!is_multiline && (focus_requested_by_tab || (user_clicked && io.KeyCtrl)))
-                select_all = true;
-        }
-        SetActiveID(id, window);
-        SetFocusID(id, window);
-        FocusWindow(window);
-        if (!is_multiline && !(flags & ImGuiInputTextFlags_CallbackHistory))
-            g.ActiveIdAllowNavDirFlags |= ((1 << ImGuiDir_Up) | (1 << ImGuiDir_Down));
-    }
-    else if (io.MouseClicked[0])
-    {
-        // Release focus when we click outside
-        clear_active_id = true;
-    }
-
-    bool value_changed = false;
-    bool enter_pressed = false;
-    int backup_current_text_length = 0;
-
-    if (g.ActiveId == id)
-    {
-        if (!is_editable && !g.ActiveIdIsJustActivated)
-        {
-            // When read-only we always use the live data passed to the function
-            edit_state.TextW.resize(buf_size+1);
-            const char* buf_end = NULL;
-            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, buf, NULL, &buf_end);
-            edit_state.CurLenA = (int)(buf_end - buf);
-            edit_state.CursorClamp();
-        }
-
-        backup_current_text_length = edit_state.CurLenA;
-        edit_state.BufCapacityA = buf_size;
-        edit_state.UserFlags = flags;
-        edit_state.UserCallback = callback;
-        edit_state.UserCallbackData = callback_user_data;
-
-        // Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.
-        // Down the line we should have a cleaner library-wide concept of Selected vs Active.
-        g.ActiveIdAllowOverlap = !io.MouseDown[0];
-        g.WantTextInputNextFrame = 1;
-
-        // Edit in progress
-        const float mouse_x = (io.MousePos.x - frame_bb.Min.x - style.FramePadding.x) + edit_state.ScrollX;
-        const float mouse_y = (is_multiline ? (io.MousePos.y - draw_window->DC.CursorPos.y - style.FramePadding.y) : (g.FontSize*0.5f));
-
-        const bool is_osx = io.ConfigMacOSXBehaviors;
-        if (select_all || (hovered && !is_osx && io.MouseDoubleClicked[0]))
-        {
-            edit_state.SelectAll();
-            edit_state.SelectedAllMouseLock = true;
-        }
-        else if (hovered && is_osx && io.MouseDoubleClicked[0])
-        {
-            // Double-click select a word only, OS X style (by simulating keystrokes)
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT);
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDRIGHT | STB_TEXTEDIT_K_SHIFT);
-        }
-        else if (io.MouseClicked[0] && !edit_state.SelectedAllMouseLock)
-        {
-            if (hovered)
-            {
-                stb_textedit_click(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
-                edit_state.CursorAnimReset();
-            }
-        }
-        else if (io.MouseDown[0] && !edit_state.SelectedAllMouseLock && (io.MouseDelta.x != 0.0f || io.MouseDelta.y != 0.0f))
-        {
-            stb_textedit_drag(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
-            edit_state.CursorAnimReset();
-            edit_state.CursorFollow = true;
-        }
-        if (edit_state.SelectedAllMouseLock && !io.MouseDown[0])
-            edit_state.SelectedAllMouseLock = false;
-
-        if (io.InputCharacters[0])
-        {
-            // Process text input (before we check for Return because using some IME will effectively send a Return?)
-            // We ignore CTRL inputs, but need to allow ALT+CTRL as some keyboards (e.g. German) use AltGR (which _is_ Alt+Ctrl) to input certain characters.
-            bool ignore_inputs = (io.KeyCtrl && !io.KeyAlt) || (is_osx && io.KeySuper);
-            if (!ignore_inputs && is_editable && !user_nav_input_start)
-                for (int n = 0; n < IM_ARRAYSIZE(io.InputCharacters) && io.InputCharacters[n]; n++)
-                {
-                    // Insert character if they pass filtering
-                    unsigned int c = (unsigned int)io.InputCharacters[n];
-                    if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                        edit_state.OnKeyPressed((int)c);
-                }
-
-            // Consume characters
-            memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters));
-        }
-    }
-
-    bool cancel_edit = false;
-    if (g.ActiveId == id && !g.ActiveIdIsJustActivated && !clear_active_id)
-    {
-        // Handle key-presses
-        const int k_mask = (io.KeyShift ? STB_TEXTEDIT_K_SHIFT : 0);
-        const bool is_osx = io.ConfigMacOSXBehaviors;
-        const bool is_shortcut_key = (is_osx ? (io.KeySuper && !io.KeyCtrl) : (io.KeyCtrl && !io.KeySuper)) && !io.KeyAlt && !io.KeyShift; // OS X style: Shortcuts using Cmd/Super instead of Ctrl
-        const bool is_osx_shift_shortcut = is_osx && io.KeySuper && io.KeyShift && !io.KeyCtrl && !io.KeyAlt;
-        const bool is_wordmove_key_down = is_osx ? io.KeyAlt : io.KeyCtrl;                     // OS X style: Text editing cursor movement using Alt instead of Ctrl
-        const bool is_startend_key_down = is_osx && io.KeySuper && !io.KeyCtrl && !io.KeyAlt;  // OS X style: Line/Text Start and End using Cmd+Arrows instead of Home/End
-        const bool is_ctrl_key_only = io.KeyCtrl && !io.KeyShift && !io.KeyAlt && !io.KeySuper;
-        const bool is_shift_key_only = io.KeyShift && !io.KeyCtrl && !io.KeyAlt && !io.KeySuper;
-
-        const bool is_cut   = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_X)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Delete))) && is_editable && !is_password && (!is_multiline || edit_state.HasSelection());
-        const bool is_copy  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_C)) || (is_ctrl_key_only  && IsKeyPressedMap(ImGuiKey_Insert))) && !is_password && (!is_multiline || edit_state.HasSelection());
-        const bool is_paste = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_V)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Insert))) && is_editable;
-        const bool is_undo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Z)) && is_editable && is_undoable);
-        const bool is_redo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Y)) || (is_osx_shift_shortcut && IsKeyPressedMap(ImGuiKey_Z))) && is_editable && is_undoable;
-
-        if (IsKeyPressedMap(ImGuiKey_LeftArrow))                        { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINESTART : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDLEFT : STB_TEXTEDIT_K_LEFT) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_RightArrow))                  { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINEEND : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDRIGHT : STB_TEXTEDIT_K_RIGHT) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_UpArrow) && is_multiline)     { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMax(draw_window->Scroll.y - g.FontSize, 0.0f)); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTSTART : STB_TEXTEDIT_K_UP) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_DownArrow) && is_multiline)   { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMin(draw_window->Scroll.y + g.FontSize, GetScrollMaxY())); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTEND : STB_TEXTEDIT_K_DOWN) | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Home))                        { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_End))                         { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Delete) && is_editable)       { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_Backspace) && is_editable)
-        {
-            if (!edit_state.HasSelection())
-            {
-                if (is_wordmove_key_down) edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT|STB_TEXTEDIT_K_SHIFT);
-                else if (is_osx && io.KeySuper && !io.KeyAlt && !io.KeyCtrl) edit_state.OnKeyPressed(STB_TEXTEDIT_K_LINESTART|STB_TEXTEDIT_K_SHIFT);
-            }
-            edit_state.OnKeyPressed(STB_TEXTEDIT_K_BACKSPACE | k_mask);
-        }
-        else if (IsKeyPressedMap(ImGuiKey_Enter))
-        {
-            bool ctrl_enter_for_new_line = (flags & ImGuiInputTextFlags_CtrlEnterForNewLine) != 0;
-            if (!is_multiline || (ctrl_enter_for_new_line && !io.KeyCtrl) || (!ctrl_enter_for_new_line && io.KeyCtrl))
-            {
-                enter_pressed = clear_active_id = true;
-            }
-            else if (is_editable)
-            {
-                unsigned int c = '\n'; // Insert new line
-                if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                    edit_state.OnKeyPressed((int)c);
-            }
-        }
-        else if ((flags & ImGuiInputTextFlags_AllowTabInput) && IsKeyPressedMap(ImGuiKey_Tab) && !io.KeyCtrl && !io.KeyShift && !io.KeyAlt && is_editable)
-        {
-            unsigned int c = '\t'; // Insert TAB
-            if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                edit_state.OnKeyPressed((int)c);
-        }
-        else if (IsKeyPressedMap(ImGuiKey_Escape))
-        {
-            clear_active_id = cancel_edit = true;
-        }
-        else if (is_undo || is_redo)
-        {
-            edit_state.OnKeyPressed(is_undo ? STB_TEXTEDIT_K_UNDO : STB_TEXTEDIT_K_REDO);
-            edit_state.ClearSelection();
-        }
-        else if (is_shortcut_key && IsKeyPressedMap(ImGuiKey_A))
-        {
-            edit_state.SelectAll();
-            edit_state.CursorFollow = true;
-        }
-        else if (is_cut || is_copy)
-        {
-            // Cut, Copy
-            if (io.SetClipboardTextFn)
-            {
-                const int ib = edit_state.HasSelection() ? ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end) : 0;
-                const int ie = edit_state.HasSelection() ? ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end) : edit_state.CurLenW;
-                edit_state.TempBuffer.resize((ie-ib) * 4 + 1);
-                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data+ib, edit_state.TextW.Data+ie);
-                SetClipboardText(edit_state.TempBuffer.Data);
-            }
-            if (is_cut)
-            {
-                if (!edit_state.HasSelection())
-                    edit_state.SelectAll();
-                edit_state.CursorFollow = true;
-                stb_textedit_cut(&edit_state, &edit_state.StbState);
-            }
-        }
-        else if (is_paste)
-        {
-            if (const char* clipboard = GetClipboardText())
-            {
-                // Filter pasted buffer
-                const int clipboard_len = (int)strlen(clipboard);
-                ImWchar* clipboard_filtered = (ImWchar*)ImGui::MemAlloc((clipboard_len+1) * sizeof(ImWchar));
-                int clipboard_filtered_len = 0;
-                for (const char* s = clipboard; *s; )
-                {
-                    unsigned int c;
-                    s += ImTextCharFromUtf8(&c, s, NULL);
-                    if (c == 0)
-                        break;
-                    if (c >= 0x10000 || !InputTextFilterCharacter(&c, flags, callback, callback_user_data))
-                        continue;
-                    clipboard_filtered[clipboard_filtered_len++] = (ImWchar)c;
-                }
-                clipboard_filtered[clipboard_filtered_len] = 0;
-                if (clipboard_filtered_len > 0) // If everything was filtered, ignore the pasting operation
-                {
-                    stb_textedit_paste(&edit_state, &edit_state.StbState, clipboard_filtered, clipboard_filtered_len);
-                    edit_state.CursorFollow = true;
-                }
-                ImGui::MemFree(clipboard_filtered);
-            }
-        }
-    }
-
-    if (g.ActiveId == id)
-    {
-        const char* apply_new_text = NULL;
-        int apply_new_text_length = 0;
-        if (cancel_edit)
-        {
-            // Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
-            if (is_editable && strcmp(buf, edit_state.InitialText.Data) != 0)
-            {
-                apply_new_text = edit_state.InitialText.Data;
-                apply_new_text_length = edit_state.InitialText.Size - 1;
-            }
-        }
-
-        // When using 'ImGuiInputTextFlags_EnterReturnsTrue' as a special case we reapply the live buffer back to the input buffer before clearing ActiveId, even though strictly speaking it wasn't modified on this frame.
-        // If we didn't do that, code like InputInt() with ImGuiInputTextFlags_EnterReturnsTrue would fail. Also this allows the user to use InputText() with ImGuiInputTextFlags_EnterReturnsTrue without maintaining any user-side storage.
-        bool apply_edit_back_to_user_buffer = !cancel_edit || (enter_pressed && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
-        if (apply_edit_back_to_user_buffer)
-        {
-            // Apply new value immediately - copy modified buffer back
-            // Note that as soon as the input box is active, the in-widget value gets priority over any underlying modification of the input buffer
-            // FIXME: We actually always render 'buf' when calling DrawList->AddText, making the comment above incorrect.
-            // FIXME-OPT: CPU waste to do this every time the widget is active, should mark dirty state from the stb_textedit callbacks.
-            if (is_editable)
-            {
-                edit_state.TempBuffer.resize(edit_state.TextW.Size * 4 + 1);
-                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data, NULL);
-            }
-
-            // User callback
-            if ((flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_CallbackHistory | ImGuiInputTextFlags_CallbackAlways)) != 0)
-            {
-                IM_ASSERT(callback != NULL);
-
-                // The reason we specify the usage semantic (Completion/History) is that Completion needs to disable keyboard TABBING at the moment.
-                ImGuiInputTextFlags event_flag = 0;
-                ImGuiKey event_key = ImGuiKey_COUNT;
-                if ((flags & ImGuiInputTextFlags_CallbackCompletion) != 0 && IsKeyPressedMap(ImGuiKey_Tab))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackCompletion;
-                    event_key = ImGuiKey_Tab;
-                }
-                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_UpArrow))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackHistory;
-                    event_key = ImGuiKey_UpArrow;
-                }
-                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_DownArrow))
-                {
-                    event_flag = ImGuiInputTextFlags_CallbackHistory;
-                    event_key = ImGuiKey_DownArrow;
-                }
-                else if (flags & ImGuiInputTextFlags_CallbackAlways)
-                    event_flag = ImGuiInputTextFlags_CallbackAlways;
-
-                if (event_flag)
-                {
-                    ImGuiInputTextCallbackData callback_data;
-                    memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
-                    callback_data.EventFlag = event_flag;
-                    callback_data.Flags = flags;
-                    callback_data.UserData = callback_user_data;
-
-                    callback_data.EventKey = event_key;
-                    callback_data.Buf = edit_state.TempBuffer.Data;
-                    callback_data.BufTextLen = edit_state.CurLenA;
-                    callback_data.BufSize = edit_state.BufCapacityA;
-                    callback_data.BufDirty = false;
-
-                    // We have to convert from wchar-positions to UTF-8-positions, which can be pretty slow (an incentive to ditch the ImWchar buffer, see https://github.com/nothings/stb/issues/188)
-                    ImWchar* text = edit_state.TextW.Data;
-                    const int utf8_cursor_pos = callback_data.CursorPos = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.cursor);
-                    const int utf8_selection_start = callback_data.SelectionStart = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_start);
-                    const int utf8_selection_end = callback_data.SelectionEnd = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_end);
-
-                    // Call user code
-                    callback(&callback_data);
-
-                    // Read back what user may have modified
-                    IM_ASSERT(callback_data.Buf == edit_state.TempBuffer.Data);  // Invalid to modify those fields
-                    IM_ASSERT(callback_data.BufSize == edit_state.BufCapacityA);
-                    IM_ASSERT(callback_data.Flags == flags);
-                    if (callback_data.CursorPos != utf8_cursor_pos)            { edit_state.StbState.cursor = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.CursorPos); edit_state.CursorFollow = true; }
-                    if (callback_data.SelectionStart != utf8_selection_start)  { edit_state.StbState.select_start = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionStart); }
-                    if (callback_data.SelectionEnd != utf8_selection_end)      { edit_state.StbState.select_end = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionEnd); }
-                    if (callback_data.BufDirty)
-                    {
-                        IM_ASSERT(callback_data.BufTextLen == (int)strlen(callback_data.Buf)); // You need to maintain BufTextLen if you change the text!
-                        if (callback_data.BufTextLen > backup_current_text_length && is_resizable)
-                            edit_state.TextW.resize(edit_state.TextW.Size + (callback_data.BufTextLen - backup_current_text_length));
-                        edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, callback_data.Buf, NULL);
-                        edit_state.CurLenA = callback_data.BufTextLen;  // Assume correct length and valid UTF-8 from user, saves us an extra strlen()
-                        edit_state.CursorAnimReset();
-                    }
-                }
-            }
-
-            // Will copy result string if modified
-            if (is_editable && strcmp(edit_state.TempBuffer.Data, buf) != 0)
-            {
-                apply_new_text = edit_state.TempBuffer.Data;
-                apply_new_text_length = edit_state.CurLenA;
-            }
-        }
-
-        // Copy result to user buffer
-        if (apply_new_text)
-        {
-            IM_ASSERT(apply_new_text_length >= 0);
-            if (backup_current_text_length != apply_new_text_length && is_resizable)
-            {
-                ImGuiInputTextCallbackData callback_data;
-                callback_data.EventFlag = ImGuiInputTextFlags_CallbackResize;
-                callback_data.Flags = flags;
-                callback_data.Buf = buf;
-                callback_data.BufTextLen = apply_new_text_length;
-                callback_data.BufSize = ImMax(buf_size, apply_new_text_length + 1);
-                callback_data.UserData = callback_user_data;
-                callback(&callback_data);
-                buf = callback_data.Buf;
-                buf_size = callback_data.BufSize;
-                apply_new_text_length = ImMin(callback_data.BufTextLen, buf_size - 1);
-                IM_ASSERT(apply_new_text_length <= buf_size);
-            }
-
-            // If the underlying buffer resize was denied or not carried to the next frame, apply_new_text_length+1 may be >= buf_size.
-            ImStrncpy(buf, edit_state.TempBuffer.Data, ImMin(apply_new_text_length + 1, buf_size));
-            value_changed = true;
-        }
-
-        // Clear temporary user storage
-        edit_state.UserFlags = 0;
-        edit_state.UserCallback = NULL;
-        edit_state.UserCallbackData = NULL;
-    }
-
-    // Release active ID at the end of the function (so e.g. pressing Return still does a final application of the value)
-    if (clear_active_id && g.ActiveId == id)
-        ClearActiveID();
-
-    // Render
-    // Select which buffer we are going to display. When ImGuiInputTextFlags_NoLiveEdit is set 'buf' might still be the old value. We set buf to NULL to prevent accidental usage from now on.
-    const char* buf_display = (g.ActiveId == id && is_editable) ? edit_state.TempBuffer.Data : buf; buf = NULL;
-
-    // Set upper limit of single-line InputTextEx() at 2 million characters strings. The current pathological worst case is a long line
-    // without any carriage return, which would makes ImFont::RenderText() reserve too many vertices and probably crash. Avoid it altogether.
-    // Note that we only use this limit on single-line InputText(), so a pathologically large line on a InputTextMultiline() would still crash.
-    const int buf_display_max_length = 2 * 1024 * 1024;
-
-    if (!is_multiline)
-    {
-        RenderNavHighlight(frame_bb, id);
-        RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
-    }
-
-    const ImVec4 clip_rect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + size.x, frame_bb.Min.y + size.y); // Not using frame_bb.Max because we have adjusted size
-    ImVec2 render_pos = is_multiline ? draw_window->DC.CursorPos : frame_bb.Min + style.FramePadding;
-    ImVec2 text_size(0.f, 0.f);
-    const bool is_currently_scrolling = (edit_state.ID == id && is_multiline && g.ActiveId == draw_window->GetIDNoKeepAlive("#SCROLLY"));
-    if (g.ActiveId == id || is_currently_scrolling)
-    {
-        edit_state.CursorAnim += io.DeltaTime;
-
-        // This is going to be messy. We need to:
-        // - Display the text (this alone can be more easily clipped)
-        // - Handle scrolling, highlight selection, display cursor (those all requires some form of 1d->2d cursor position calculation)
-        // - Measure text height (for scrollbar)
-        // We are attempting to do most of that in **one main pass** to minimize the computation cost (non-negligible for large amount of text) + 2nd pass for selection rendering (we could merge them by an extra refactoring effort)
-        // FIXME: This should occur on buf_display but we'd need to maintain cursor/select_start/select_end for UTF-8.
-        const ImWchar* text_begin = edit_state.TextW.Data;
-        ImVec2 cursor_offset, select_start_offset;
-
-        {
-            // Count lines + find lines numbers straddling 'cursor' and 'select_start' position.
-            const ImWchar* searches_input_ptr[2];
-            searches_input_ptr[0] = text_begin + edit_state.StbState.cursor;
-            searches_input_ptr[1] = NULL;
-            int searches_remaining = 1;
-            int searches_result_line_number[2] = { -1, -999 };
-            if (edit_state.StbState.select_start != edit_state.StbState.select_end)
-            {
-                searches_input_ptr[1] = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
-                searches_result_line_number[1] = -1;
-                searches_remaining++;
-            }
-
-            // Iterate all lines to find our line numbers
-            // In multi-line mode, we never exit the loop until all lines are counted, so add one extra to the searches_remaining counter.
-            searches_remaining += is_multiline ? 1 : 0;
-            int line_count = 0;
-            for (const ImWchar* s = text_begin; *s != 0; s++)
-                if (*s == '\n')
-                {
-                    line_count++;
-                    if (searches_result_line_number[0] == -1 && s >= searches_input_ptr[0]) { searches_result_line_number[0] = line_count; if (--searches_remaining <= 0) break; }
-                    if (searches_result_line_number[1] == -1 && s >= searches_input_ptr[1]) { searches_result_line_number[1] = line_count; if (--searches_remaining <= 0) break; }
-                }
-            line_count++;
-            if (searches_result_line_number[0] == -1) searches_result_line_number[0] = line_count;
-            if (searches_result_line_number[1] == -1) searches_result_line_number[1] = line_count;
-
-            // Calculate 2d position by finding the beginning of the line and measuring distance
-            cursor_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[0], text_begin), searches_input_ptr[0]).x;
-            cursor_offset.y = searches_result_line_number[0] * g.FontSize;
-            if (searches_result_line_number[1] >= 0)
-            {
-                select_start_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[1], text_begin), searches_input_ptr[1]).x;
-                select_start_offset.y = searches_result_line_number[1] * g.FontSize;
-            }
-
-            // Store text height (note that we haven't calculated text width at all, see GitHub issues #383, #1224)
-            if (is_multiline)
-                text_size = ImVec2(size.x, line_count * g.FontSize);
-        }
-
-        // Scroll
-        if (edit_state.CursorFollow)
-        {
-            // Horizontal scroll in chunks of quarter width
-            if (!(flags & ImGuiInputTextFlags_NoHorizontalScroll))
-            {
-                const float scroll_increment_x = size.x * 0.25f;
-                if (cursor_offset.x < edit_state.ScrollX)
-                    edit_state.ScrollX = (float)(int)ImMax(0.0f, cursor_offset.x - scroll_increment_x);
-                else if (cursor_offset.x - size.x >= edit_state.ScrollX)
-                    edit_state.ScrollX = (float)(int)(cursor_offset.x - size.x + scroll_increment_x);
-            }
-            else
-            {
-                edit_state.ScrollX = 0.0f;
-            }
-
-            // Vertical scroll
-            if (is_multiline)
-            {
-                float scroll_y = draw_window->Scroll.y;
-                if (cursor_offset.y - g.FontSize < scroll_y)
-                    scroll_y = ImMax(0.0f, cursor_offset.y - g.FontSize);
-                else if (cursor_offset.y - size.y >= scroll_y)
-                    scroll_y = cursor_offset.y - size.y;
-                draw_window->DC.CursorPos.y += (draw_window->Scroll.y - scroll_y);   // To avoid a frame of lag
-                draw_window->Scroll.y = scroll_y;
-                render_pos.y = draw_window->DC.CursorPos.y;
-            }
-        }
-        edit_state.CursorFollow = false;
-        const ImVec2 render_scroll = ImVec2(edit_state.ScrollX, 0.0f);
-
-        // Draw selection
-        if (edit_state.StbState.select_start != edit_state.StbState.select_end)
-        {
-            const ImWchar* text_selected_begin = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
-            const ImWchar* text_selected_end = text_begin + ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end);
-
-            float bg_offy_up = is_multiline ? 0.0f : -1.0f;    // FIXME: those offsets should be part of the style? they don't play so well with multi-line selection.
-            float bg_offy_dn = is_multiline ? 0.0f : 2.0f;
-            ImU32 bg_color = GetColorU32(ImGuiCol_TextSelectedBg);
-            ImVec2 rect_pos = render_pos + select_start_offset - render_scroll;
-            for (const ImWchar* p = text_selected_begin; p < text_selected_end; )
-            {
-                if (rect_pos.y > clip_rect.w + g.FontSize)
-                    break;
-                if (rect_pos.y < clip_rect.y)
-                {
-                    while (p < text_selected_end)
-                        if (*p++ == '\n')
-                            break;
-                }
-                else
-                {
-                    ImVec2 rect_size = InputTextCalcTextSizeW(p, text_selected_end, &p, NULL, true);
-                    if (rect_size.x <= 0.0f) rect_size.x = (float)(int)(g.Font->GetCharAdvance((unsigned short)' ') * 0.50f); // So we can see selected empty lines
-                    ImRect rect(rect_pos + ImVec2(0.0f, bg_offy_up - g.FontSize), rect_pos +ImVec2(rect_size.x, bg_offy_dn));
-                    rect.ClipWith(clip_rect);
-                    if (rect.Overlaps(clip_rect))
-                        draw_window->DrawList->AddRectFilled(rect.Min, rect.Max, bg_color);
-                }
-                rect_pos.x = render_pos.x - render_scroll.x;
-                rect_pos.y += g.FontSize;
-            }
-        }
-
-        const int buf_display_len = edit_state.CurLenA;
-        if (is_multiline || buf_display_len < buf_display_max_length)
-            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos - render_scroll, GetColorU32(ImGuiCol_Text), buf_display, buf_display + buf_display_len, 0.0f, is_multiline ? NULL : &clip_rect);
-
-        // Draw blinking cursor
-        bool cursor_is_visible = (!g.IO.ConfigCursorBlink) || (g.InputTextState.CursorAnim <= 0.0f) || ImFmod(g.InputTextState.CursorAnim, 1.20f) <= 0.80f;
-        ImVec2 cursor_screen_pos = render_pos + cursor_offset - render_scroll;
-        ImRect cursor_screen_rect(cursor_screen_pos.x, cursor_screen_pos.y-g.FontSize+0.5f, cursor_screen_pos.x+1.0f, cursor_screen_pos.y-1.5f);
-        if (cursor_is_visible && cursor_screen_rect.Overlaps(clip_rect))
-            draw_window->DrawList->AddLine(cursor_screen_rect.Min, cursor_screen_rect.GetBL(), GetColorU32(ImGuiCol_Text));
-
-        // Notify OS of text input position for advanced IME (-1 x offset so that Windows IME can cover our cursor. Bit of an extra nicety.)
-        if (is_editable)
-            g.PlatformImePos = ImVec2(cursor_screen_pos.x - 1, cursor_screen_pos.y - g.FontSize);
-    }
-    else
-    {
-        // Render text only
-        const char* buf_end = NULL;
-        if (is_multiline)
-            text_size = ImVec2(size.x, InputTextCalcTextLenAndLineCount(buf_display, &buf_end) * g.FontSize); // We don't need width
-        else
-            buf_end = buf_display + strlen(buf_display);
-        if (is_multiline || (buf_end - buf_display) < buf_display_max_length)
-            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos, GetColorU32(ImGuiCol_Text), buf_display, buf_end, 0.0f, is_multiline ? NULL : &clip_rect);
-    }
-
-    if (is_multiline)
-    {
-        Dummy(text_size + ImVec2(0.0f, g.FontSize)); // Always add room to scroll an extra line
-        EndChildFrame();
-        EndGroup();
-    }
-
-    if (is_password)
-        PopFont();
-
-    // Log as text
-    if (g.LogEnabled && !is_password)
-        LogRenderedText(&render_pos, buf_display, NULL);
-
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    if (value_changed)
-        MarkItemEdited(id);
-
-    if ((flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0)
-        return enter_pressed;
-    else
-        return value_changed;
-}
-
-bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    IM_ASSERT(!(flags & ImGuiInputTextFlags_Multiline)); // call InputTextMultiline()
-    return InputTextEx(label, buf, (int)buf_size, ImVec2(0,0), flags, callback, user_data);
-}
-
-bool ImGui::InputTextMultiline(const char* label, char* buf, size_t buf_size, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
-    return InputTextEx(label, buf, (int)buf_size, size, flags | ImGuiInputTextFlags_Multiline, callback, user_data);
-}
-
-// NB: format here must be a simple "%xx" format string with no prefix/suffix (unlike the Drag/Slider functions "format" argument)
-bool ImGui::InputScalar(const char* label, ImGuiDataType data_type, void* data_ptr, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
-    if (format == NULL)
-        format = GDataTypeInfo[data_type].PrintFmt;
-
-    char buf[64];
-    DataTypeFormatString(buf, IM_ARRAYSIZE(buf), data_type, data_ptr, format);
-
-    bool value_changed = false;
-    if ((extra_flags & (ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsScientific)) == 0)
-        extra_flags |= ImGuiInputTextFlags_CharsDecimal;
-    extra_flags |= ImGuiInputTextFlags_AutoSelectAll;
-
-    if (step != NULL)
-    {
-        const float button_size = GetFrameHeight();
-
-        BeginGroup(); // The only purpose of the group here is to allow the caller to query item data e.g. IsItemActive()
-        PushID(label);
-        PushItemWidth(ImMax(1.0f, CalcItemWidth() - (button_size + style.ItemInnerSpacing.x) * 2));
-        if (InputText("", buf, IM_ARRAYSIZE(buf), extra_flags)) // PushId(label) + "" gives us the expected ID from outside point of view
-            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
-        PopItemWidth();
-
-        // Step buttons
-        SameLine(0, style.ItemInnerSpacing.x);
-        if (ButtonEx("-", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
-        {
-            DataTypeApplyOp(data_type, '-', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
-            value_changed = true;
-        }
-        SameLine(0, style.ItemInnerSpacing.x);
-        if (ButtonEx("+", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
-        {
-            DataTypeApplyOp(data_type, '+', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
-            value_changed = true;
-        }
-        SameLine(0, style.ItemInnerSpacing.x);
-        TextUnformatted(label, FindRenderedTextEnd(label));
-
-        PopID();
-        EndGroup();
-    }
-    else
-    {
-        if (InputText(label, buf, IM_ARRAYSIZE(buf), extra_flags))
-            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
-    }
-
-    return value_changed;
-}
-
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    extra_flags |= ImGuiInputTextFlags_CharsScientific;
-    return InputScalar(label, ImGuiDataType_Float, (void*)v, (void*)(step>0.0f ? &step : NULL), (void*)(step_fast>0.0f ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputDouble(const char* label, double* v, double step, double step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    extra_flags |= ImGuiInputTextFlags_CharsScientific;
-    return InputScalar(label, ImGuiDataType_Double, (void*)v, (void*)(step>0.0 ? &step : NULL), (void*)(step_fast>0.0 ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputInt(const char* label, int* v, int step, int step_fast, ImGuiInputTextFlags extra_flags)
-{
-    // Hexadecimal input provided as a convenience but the flag name is awkward. Typically you'd use InputText() to parse your own data, if you want to handle prefixes.
-    const char* format = (extra_flags & ImGuiInputTextFlags_CharsHexadecimal) ? "%08X" : "%d";
-    return InputScalar(label, ImGuiDataType_S32, (void*)v, (void*)(step>0 ? &step : NULL), (void*)(step_fast>0 ? &step_fast : NULL), format, extra_flags);
-}
-
-bool ImGui::InputScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    BeginGroup();
-    PushID(label);
-    PushMultiItemsWidths(components);
-    size_t type_size = GDataTypeInfo[data_type].Size;
-    for (int i = 0; i < components; i++)
-    {
-        PushID(i);
-        value_changed |= InputScalar("##v", data_type, v, step, step_fast, format, extra_flags);
-        SameLine(0, g.Style.ItemInnerSpacing.x);
-        PopID();
-        PopItemWidth();
-        v = (void*)((char*)v + type_size);
-    }
-    PopID();
-
-    TextUnformatted(label, FindRenderedTextEnd(label));
-    EndGroup();
-    return value_changed;
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], const char* format, ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
-}
-
-// Prefer using "const char* format" directly, which is more flexible and consistent with other API.
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputFloat(label, v, step, step_fast, format, extra_flags);
-}
-
-bool ImGui::InputFloat2(const char* label, float v[2], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat3(const char* label, float v[3], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
-}
-
-bool ImGui::InputFloat4(const char* label, float v[4], int decimal_precision, ImGuiInputTextFlags extra_flags)
-{
-    char format[16] = "%f";
-    if (decimal_precision >= 0)
-        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
-    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
-}
-#endif // IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-
-bool ImGui::InputInt2(const char* label, int v[2], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 2, NULL, NULL, "%d", extra_flags);
-}
-
-bool ImGui::InputInt3(const char* label, int v[3], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 3, NULL, NULL, "%d", extra_flags);
-}
-
-bool ImGui::InputInt4(const char* label, int v[4], ImGuiInputTextFlags extra_flags)
-{
-    return InputScalarN(label, ImGuiDataType_S32, v, 4, NULL, NULL, "%d", extra_flags);
-}
-
-static float CalcMaxPopupHeightFromItemCount(int items_count)
-{
-    ImGuiContext& g = *GImGui;
-    if (items_count <= 0)
-        return FLT_MAX;
-    return (g.FontSize + g.Style.ItemSpacing.y) * items_count - g.Style.ItemSpacing.y + (g.Style.WindowPadding.y * 2);
-}
-
-bool ImGui::BeginCombo(const char* label, const char* preview_value, ImGuiComboFlags flags)
-{
-    // Always consume the SetNextWindowSizeConstraint() call in our early return paths
-    ImGuiContext& g = *GImGui;
-    ImGuiCond backup_next_window_size_constraint = g.NextWindowData.SizeConstraintCond;
-    g.NextWindowData.SizeConstraintCond = 0;
-
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    IM_ASSERT((flags & (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)) != (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)); // Can't use both flags together
-
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    const float arrow_size = (flags & ImGuiComboFlags_NoArrowButton) ? 0.0f : GetFrameHeight();
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-    const float w = (flags & ImGuiComboFlags_NoPreview) ? arrow_size : CalcItemWidth();
-    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
-    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-    ItemSize(total_bb, style.FramePadding.y);
-    if (!ItemAdd(total_bb, id, &frame_bb))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(frame_bb, id, &hovered, &held);
-    bool popup_open = IsPopupOpen(id);
-
-    const ImRect value_bb(frame_bb.Min, frame_bb.Max - ImVec2(arrow_size, 0.0f));
-    const ImU32 frame_col = GetColorU32(hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
-    RenderNavHighlight(frame_bb, id);
-    if (!(flags & ImGuiComboFlags_NoPreview))
-        window->DrawList->AddRectFilled(frame_bb.Min, ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Max.y), frame_col, style.FrameRounding, ImDrawCornerFlags_Left);
-    if (!(flags & ImGuiComboFlags_NoArrowButton))
-    {
-        window->DrawList->AddRectFilled(ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Min.y), frame_bb.Max, GetColorU32((popup_open || hovered) ? ImGuiCol_ButtonHovered : ImGuiCol_Button), style.FrameRounding, (w <= arrow_size) ? ImDrawCornerFlags_All : ImDrawCornerFlags_Right);
-        RenderArrow(ImVec2(frame_bb.Max.x - arrow_size + style.FramePadding.y, frame_bb.Min.y + style.FramePadding.y), ImGuiDir_Down);
-    }
-    RenderFrameBorder(frame_bb.Min, frame_bb.Max, style.FrameRounding);
-    if (preview_value != NULL && !(flags & ImGuiComboFlags_NoPreview))
-        RenderTextClipped(frame_bb.Min + style.FramePadding, value_bb.Max, preview_value, NULL, NULL, ImVec2(0.0f,0.0f));
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    if ((pressed || g.NavActivateId == id) && !popup_open)
-    {
-        if (window->DC.NavLayerCurrent == 0)
-            window->NavLastIds[0] = id;
-        OpenPopupEx(id);
-        popup_open = true;
-    }
-
-    if (!popup_open)
-        return false;
-
-    if (backup_next_window_size_constraint)
-    {
-        g.NextWindowData.SizeConstraintCond = backup_next_window_size_constraint;
-        g.NextWindowData.SizeConstraintRect.Min.x = ImMax(g.NextWindowData.SizeConstraintRect.Min.x, w);
-    }
-    else
-    {
-        if ((flags & ImGuiComboFlags_HeightMask_) == 0)
-            flags |= ImGuiComboFlags_HeightRegular;
-        IM_ASSERT(ImIsPowerOfTwo(flags & ImGuiComboFlags_HeightMask_));    // Only one
-        int popup_max_height_in_items = -1;
-        if (flags & ImGuiComboFlags_HeightRegular)     popup_max_height_in_items = 8;
-        else if (flags & ImGuiComboFlags_HeightSmall)  popup_max_height_in_items = 4;
-        else if (flags & ImGuiComboFlags_HeightLarge)  popup_max_height_in_items = 20;
-        SetNextWindowSizeConstraints(ImVec2(w, 0.0f), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
-    }
-
-    char name[16];
-    ImFormatString(name, IM_ARRAYSIZE(name), "##Combo_%02d", g.CurrentPopupStack.Size); // Recycle windows based on depth
-
-    // Peak into expected window size so we can position it
-    if (ImGuiWindow* popup_window = FindWindowByName(name))
-        if (popup_window->WasActive)
-        {
-            ImVec2 size_expected = CalcWindowExpectedSize(popup_window);
-            if (flags & ImGuiComboFlags_PopupAlignLeft)
-                popup_window->AutoPosLastDirection = ImGuiDir_Left;
-            ImRect r_outer = GetWindowAllowedExtentRect(popup_window);
-            ImVec2 pos = FindBestWindowPosForPopupEx(frame_bb.GetBL(), size_expected, &popup_window->AutoPosLastDirection, r_outer, frame_bb, ImGuiPopupPositionPolicy_ComboBox);
-            SetNextWindowPos(pos);
-        }
-
-    // Horizontally align ourselves with the framed text
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_Popup | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoSavedSettings;
-    PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(style.FramePadding.x, style.WindowPadding.y));
-    bool ret = Begin(name, NULL, window_flags);
-    PopStyleVar();
-    if (!ret)
-    {
-        EndPopup();
-        IM_ASSERT(0);   // This should never happen as we tested for IsPopupOpen() above
-        return false;
-    }
-    return true;
-}
-
-void ImGui::EndCombo()
-{
-    EndPopup();
-}
-
-// Getter for the old Combo() API: const char*[]
-static bool Items_ArrayGetter(void* data, int idx, const char** out_text)
-{
-    const char* const* items = (const char* const*)data;
-    if (out_text)
-        *out_text = items[idx];
-    return true;
-}
-
-// Getter for the old Combo() API: "item1\0item2\0item3\0"
-static bool Items_SingleStringGetter(void* data, int idx, const char** out_text)
-{
-    // FIXME-OPT: we could pre-compute the indices to fasten this. But only 1 active combo means the waste is limited.
-    const char* items_separated_by_zeros = (const char*)data;
-    int items_count = 0;
-    const char* p = items_separated_by_zeros;
-    while (*p)
-    {
-        if (idx == items_count)
-            break;
-        p += strlen(p) + 1;
-        items_count++;
-    }
-    if (!*p)
-        return false;
-    if (out_text)
-        *out_text = p;
-    return true;
-}
-
-// Old API, prefer using BeginCombo() nowadays if you can.
-bool ImGui::Combo(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int popup_max_height_in_items)
-{
-    ImGuiContext& g = *GImGui;
-
-    // Call the getter to obtain the preview string which is a parameter to BeginCombo()
-    const char* preview_value = NULL;
-    if (*current_item >= 0 && *current_item < items_count)
-        items_getter(data, *current_item, &preview_value);
-
-    // The old Combo() API exposed "popup_max_height_in_items". The new more general BeginCombo() API doesn't have/need it, but we emulate it here.
-    if (popup_max_height_in_items != -1 && !g.NextWindowData.SizeConstraintCond)
-        SetNextWindowSizeConstraints(ImVec2(0,0), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
-
-    if (!BeginCombo(label, preview_value, ImGuiComboFlags_None))
-        return false;
-
-    // Display items
-    // FIXME-OPT: Use clipper (but we need to disable it on the appearing frame to make sure our call to SetItemDefaultFocus() is processed)
-    bool value_changed = false;
-    for (int i = 0; i < items_count; i++)
-    {
-        PushID((void*)(intptr_t)i);
-        const bool item_selected = (i == *current_item);
-        const char* item_text;
-        if (!items_getter(data, i, &item_text))
-            item_text = "*Unknown item*";
-        if (Selectable(item_text, item_selected))
-        {
-            value_changed = true;
-            *current_item = i;
-        }
-        if (item_selected)
-            SetItemDefaultFocus();
-        PopID();
-    }
-
-    EndCombo();
-    return value_changed;
-}
-
-// Combo box helper allowing to pass an array of strings.
-bool ImGui::Combo(const char* label, int* current_item, const char* const items[], int items_count, int height_in_items)
-{
-    const bool value_changed = Combo(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_in_items);
-    return value_changed;
-}
-
-// Combo box helper allowing to pass all items in a single string literal holding multiple zero-terminated items "item1\0item2\0" 
-bool ImGui::Combo(const char* label, int* current_item, const char* items_separated_by_zeros, int height_in_items)
-{
-    int items_count = 0;
-    const char* p = items_separated_by_zeros;       // FIXME-OPT: Avoid computing this, or at least only when combo is open
-    while (*p)
-    {
-        p += strlen(p) + 1;
-        items_count++;
-    }
-    bool value_changed = Combo(label, current_item, Items_SingleStringGetter, (void*)items_separated_by_zeros, items_count, height_in_items);
-    return value_changed;
-}
-
-// Tip: pass an empty label (e.g. "##dummy") then you can use the space to draw other text or image.
-// But you need to make sure the ID is unique, e.g. enclose calls in PushID/PopID or use ##unique_id.
-bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-
-    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet) // FIXME-OPT: Avoid if vertically clipped.
-        PopClipRect();
-
-    ImGuiID id = window->GetID(label);
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-    ImVec2 size(size_arg.x != 0.0f ? size_arg.x : label_size.x, size_arg.y != 0.0f ? size_arg.y : label_size.y);
-    ImVec2 pos = window->DC.CursorPos;
-    pos.y += window->DC.CurrentLineTextBaseOffset;
-    ImRect bb_inner(pos, pos + size);
-    ItemSize(bb_inner);
-
-    // Fill horizontal space.
-    ImVec2 window_padding = window->WindowPadding;
-    float max_x = (flags & ImGuiSelectableFlags_SpanAllColumns) ? GetWindowContentRegionMax().x : GetContentRegionMax().x;
-    float w_draw = ImMax(label_size.x, window->Pos.x + max_x - window_padding.x - window->DC.CursorPos.x);
-    ImVec2 size_draw((size_arg.x != 0 && !(flags & ImGuiSelectableFlags_DrawFillAvailWidth)) ? size_arg.x : w_draw, size_arg.y != 0.0f ? size_arg.y : size.y);
-    ImRect bb(pos, pos + size_draw);
-    if (size_arg.x == 0.0f || (flags & ImGuiSelectableFlags_DrawFillAvailWidth))
-        bb.Max.x += window_padding.x;
-
-    // Selectables are tightly packed together, we extend the box to cover spacing between selectable.
-    float spacing_L = (float)(int)(style.ItemSpacing.x * 0.5f);
-    float spacing_U = (float)(int)(style.ItemSpacing.y * 0.5f);
-    float spacing_R = style.ItemSpacing.x - spacing_L;
-    float spacing_D = style.ItemSpacing.y - spacing_U;
-    bb.Min.x -= spacing_L;
-    bb.Min.y -= spacing_U;
-    bb.Max.x += spacing_R;
-    bb.Max.y += spacing_D;
-    if (!ItemAdd(bb, (flags & ImGuiSelectableFlags_Disabled) ? 0 : id))
-    {
-        if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
-            PushColumnClipRect();
-        return false;
-    }
-
-    // We use NoHoldingActiveID on menus so user can click and _hold_ on a menu then drag to browse child entries
-    ImGuiButtonFlags button_flags = 0;
-    if (flags & ImGuiSelectableFlags_NoHoldingActiveID) button_flags |= ImGuiButtonFlags_NoHoldingActiveID;
-    if (flags & ImGuiSelectableFlags_PressedOnClick) button_flags |= ImGuiButtonFlags_PressedOnClick;
-    if (flags & ImGuiSelectableFlags_PressedOnRelease) button_flags |= ImGuiButtonFlags_PressedOnRelease;
-    if (flags & ImGuiSelectableFlags_Disabled) button_flags |= ImGuiButtonFlags_Disabled;
-    if (flags & ImGuiSelectableFlags_AllowDoubleClick) button_flags |= ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnDoubleClick;
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held, button_flags);
-    if (flags & ImGuiSelectableFlags_Disabled)
-        selected = false;
-
-    // Hovering selectable with mouse updates NavId accordingly so navigation can be resumed with gamepad/keyboard (this doesn't happen on most widgets)
-    if (pressed || hovered)
-        if (!g.NavDisableMouseHover && g.NavWindow == window && g.NavLayer == window->DC.NavLayerCurrent)
-        {
-            g.NavDisableHighlight = true;
-            SetNavID(id, window->DC.NavLayerCurrent);
-        }
-    if (pressed)
-        MarkItemEdited(id);
-
-    // Render
-    if (hovered || selected)
-    {
-        const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
-        RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
-        RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_TypeThin | ImGuiNavHighlightFlags_NoRounding);
-    }
-
-    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
-    {
-        PushColumnClipRect();
-        bb.Max.x -= (GetContentRegionMax().x - max_x);
-    }
-
-    if (flags & ImGuiSelectableFlags_Disabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-    RenderTextClipped(bb_inner.Min, bb.Max, label, NULL, &label_size, ImVec2(0.0f,0.0f));
-    if (flags & ImGuiSelectableFlags_Disabled) PopStyleColor();
-
-    // Automatically close popups
-    if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_DontClosePopups) && !(window->DC.ItemFlags & ImGuiItemFlags_SelectableDontClosePopup))
-        CloseCurrentPopup();
-    return pressed;
-}
-
-bool ImGui::Selectable(const char* label, bool* p_selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
-{
-    if (Selectable(label, *p_selected, flags, size_arg))
-    {
-        *p_selected = !*p_selected;
-        return true;
-    }
-    return false;
-}
-
-// FIXME: Rename to BeginListBox()
-// Helper to calculate the size of a listbox and display a label on the right.
-// Tip: To have a list filling the entire window width, PushItemWidth(-1) and pass an empty label "##empty"
-bool ImGui::ListBoxHeader(const char* label, const ImVec2& size_arg)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    const ImGuiStyle& style = GetStyle();
-    const ImGuiID id = GetID(label);
-    const ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
-    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), GetTextLineHeightWithSpacing() * 7.4f + style.ItemSpacing.y);
-    ImVec2 frame_size = ImVec2(size.x, ImMax(size.y, label_size.y));
-    ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + frame_size);
-    ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
-    window->DC.LastItemRect = bb; // Forward storage for ListBoxFooter.. dodgy.
-
-    BeginGroup();
-    if (label_size.x > 0)
-        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
-    BeginChildFrame(id, frame_bb.GetSize());
-    return true;
-}
-
-// FIXME: Rename to BeginListBox()
-bool ImGui::ListBoxHeader(const char* label, int items_count, int height_in_items)
-{
-    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
-    // We don't add +0.40f if items_count <= height_in_items. It is slightly dodgy, because it means a dynamic list of items will make the widget resize occasionally when it crosses that size.
-    // I am expecting that someone will come and complain about this behavior in a remote future, then we can advise on a better solution.
-    if (height_in_items < 0)
-        height_in_items = ImMin(items_count, 7);
-    float height_in_items_f = height_in_items < items_count ? (height_in_items + 0.40f) : (height_in_items + 0.00f);
-
-    // We include ItemSpacing.y so that a list sized for the exact number of items doesn't make a scrollbar appears. We could also enforce that by passing a flag to BeginChild().
-    ImVec2 size;
-    size.x = 0.0f;
-    size.y = GetTextLineHeightWithSpacing() * height_in_items_f + GetStyle().ItemSpacing.y;
-    return ListBoxHeader(label, size);
-}
-
-// FIXME: Rename to EndListBox()
-void ImGui::ListBoxFooter()
-{
-    ImGuiWindow* parent_window = GetCurrentWindow()->ParentWindow;
-    const ImRect bb = parent_window->DC.LastItemRect;
-    const ImGuiStyle& style = GetStyle();
-
-    EndChildFrame();
-
-    // Redeclare item size so that it includes the label (we have stored the full size in LastItemRect)
-    // We call SameLine() to restore DC.CurrentLine* data
-    SameLine();
-    parent_window->DC.CursorPos = bb.Min;
-    ItemSize(bb, style.FramePadding.y);
-    EndGroup();
-}
-
-bool ImGui::ListBox(const char* label, int* current_item, const char* const items[], int items_count, int height_items)
-{
-    const bool value_changed = ListBox(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_items);
-    return value_changed;
-}
-
-bool ImGui::ListBox(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int height_in_items)
-{
-    if (!ListBoxHeader(label, items_count, height_in_items))
-        return false;
-
-    // Assume all items have even height (= 1 line of text). If you need items of different or variable sizes you can create a custom version of ListBox() in your code without using the clipper.
-    ImGuiContext& g = *GImGui;
-    bool value_changed = false;
-    ImGuiListClipper clipper(items_count, GetTextLineHeightWithSpacing()); // We know exactly our line height here so we pass it as a minor optimization, but generally you don't need to.
-    while (clipper.Step())
-        for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++)
-        {
-            const bool item_selected = (i == *current_item);
-            const char* item_text;
-            if (!items_getter(data, i, &item_text))
-                item_text = "*Unknown item*";
-
-            PushID(i);
-            if (Selectable(item_text, item_selected))
-            {
-                *current_item = i;
-                value_changed = true;
-            }
-            if (item_selected)
-                SetItemDefaultFocus();
-            PopID();
-        }
-    ListBoxFooter();
-    if (value_changed)
-        MarkItemEdited(g.CurrentWindow->DC.LastItemId);
-
-    return value_changed;
-}
-
-bool ImGui::MenuItem(const char* label, const char* shortcut, bool selected, bool enabled)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    ImGuiStyle& style = g.Style;
-    ImVec2 pos = window->DC.CursorPos;
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    ImGuiSelectableFlags flags = ImGuiSelectableFlags_PressedOnRelease | (enabled ? 0 : ImGuiSelectableFlags_Disabled);
-    bool pressed;
-    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
-    {
-        // Mimic the exact layout spacing of BeginMenu() to allow MenuItem() inside a menu bar, which is a little misleading but may be useful
-        // Note that in this situation we render neither the shortcut neither the selected tick mark
-        float w = label_size.x;
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
-        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
-        pressed = Selectable(label, false, flags, ImVec2(w, 0.0f));
-        PopStyleVar();
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
-    }
-    else
-    {
-        ImVec2 shortcut_size = shortcut ? CalcTextSize(shortcut, NULL) : ImVec2(0.0f, 0.0f);
-        float w = window->MenuColumns.DeclColumns(label_size.x, shortcut_size.x, (float)(int)(g.FontSize * 1.20f)); // Feedback for next frame
-        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
-        pressed = Selectable(label, false, flags | ImGuiSelectableFlags_DrawFillAvailWidth, ImVec2(w, 0.0f));
-        if (shortcut_size.x > 0.0f)
-        {
-            PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-            RenderText(pos + ImVec2(window->MenuColumns.Pos[1] + extra_w, 0.0f), shortcut, NULL, false);
-            PopStyleColor();
-        }
-        if (selected)
-            RenderCheckMark(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.40f, g.FontSize * 0.134f * 0.5f), GetColorU32(enabled ? ImGuiCol_Text : ImGuiCol_TextDisabled), g.FontSize  * 0.866f);
-    }
-    return pressed;
-}
-
-bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected, bool enabled)
-{
-    if (MenuItem(label, shortcut, p_selected ? *p_selected : false, enabled))
-    {
-        if (p_selected)
-            *p_selected = !*p_selected;
-        return true;
-    }
-    return false;
-}
-
-// For the main menu bar, which cannot be moved, we honor g.Style.DisplaySafeAreaPadding to ensure text can be visible on a TV set.
-bool ImGui::BeginMainMenuBar()
-{
-    ImGuiContext& g = *GImGui;
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(g.Style.DisplaySafeAreaPadding.x, ImMax(g.Style.DisplaySafeAreaPadding.y - g.Style.FramePadding.y, 0.0f));
-    SetNextWindowPos(ImVec2(0.0f, 0.0f));
-    SetNextWindowSize(ImVec2(g.IO.DisplaySize.x, g.NextWindowData.MenuBarOffsetMinVal.y + g.FontBaseSize + g.Style.FramePadding.y));
-    PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
-    PushStyleVar(ImGuiStyleVar_WindowMinSize, ImVec2(0,0));
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_MenuBar;
-    bool is_open = Begin("##MainMenuBar", NULL, window_flags) && BeginMenuBar();
-    PopStyleVar(2);
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(0.0f, 0.0f);
-    if (!is_open)
-    {
-        End();
-        return false;
-    }
-    return true;
-}
-
-void ImGui::EndMainMenuBar()
-{
-    EndMenuBar();
-
-    // When the user has left the menu layer (typically: closed menus through activation of an item), we restore focus to the previous window
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow == g.NavWindow && g.NavLayer == 0)
-        FocusFrontMostActiveWindowIgnoringOne(g.NavWindow);
-
-    End();
-}
-
-bool ImGui::BeginMenuBar()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-    if (!(window->Flags & ImGuiWindowFlags_MenuBar))
-        return false;
-
-    IM_ASSERT(!window->DC.MenuBarAppending);
-    BeginGroup(); // Backup position on layer 0
-    PushID("##menubar");
-
-    // We don't clip with current window clipping rectangle as it is already set to the area below. However we clip with window full rect.
-    // We remove 1 worth of rounding to Max.x to that text in long menus and small windows don't tend to display over the lower-right rounded area, which looks particularly glitchy.
-    ImRect bar_rect = window->MenuBarRect();
-    ImRect clip_rect(ImFloor(bar_rect.Min.x + 0.5f), ImFloor(bar_rect.Min.y + window->WindowBorderSize + 0.5f), ImFloor(ImMax(bar_rect.Min.x, bar_rect.Max.x - window->WindowRounding) + 0.5f), ImFloor(bar_rect.Max.y + 0.5f));
-    clip_rect.ClipWith(window->OuterRectClipped);
-    PushClipRect(clip_rect.Min, clip_rect.Max, false);
-
-    window->DC.CursorPos = ImVec2(bar_rect.Min.x + window->DC.MenuBarOffset.x, bar_rect.Min.y + window->DC.MenuBarOffset.y);
-    window->DC.LayoutType = ImGuiLayoutType_Horizontal;
-    window->DC.NavLayerCurrent++;
-    window->DC.NavLayerCurrentMask <<= 1;
-    window->DC.MenuBarAppending = true;
-    AlignTextToFramePadding();
-    return true;
-}
-
-void ImGui::EndMenuBar()
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return;
-    ImGuiContext& g = *GImGui;
-
-    // Nav: When a move request within one of our child menu failed, capture the request to navigate among our siblings.
-    if (NavMoveRequestButNoResultYet() && (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right) && (g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
-    {
-        ImGuiWindow* nav_earliest_child = g.NavWindow;
-        while (nav_earliest_child->ParentWindow && (nav_earliest_child->ParentWindow->Flags & ImGuiWindowFlags_ChildMenu))
-            nav_earliest_child = nav_earliest_child->ParentWindow;
-        if (nav_earliest_child->ParentWindow == window && nav_earliest_child->DC.ParentLayoutType == ImGuiLayoutType_Horizontal && g.NavMoveRequestForward == ImGuiNavForward_None)
-        {
-            // To do so we claim focus back, restore NavId and then process the movement request for yet another frame.
-            // This involve a one-frame delay which isn't very problematic in this situation. We could remove it by scoring in advance for multiple window (probably not worth the hassle/cost)
-            IM_ASSERT(window->DC.NavLayerActiveMaskNext & 0x02); // Sanity check
-            FocusWindow(window);
-            SetNavIDWithRectRel(window->NavLastIds[1], 1, window->NavRectRel[1]);
-            g.NavLayer = 1;
-            g.NavDisableHighlight = true; // Hide highlight for the current frame so we don't see the intermediary selection.
-            g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
-            NavMoveRequestCancel();
-        }
-    }
-
-    IM_ASSERT(window->Flags & ImGuiWindowFlags_MenuBar);
-    IM_ASSERT(window->DC.MenuBarAppending);
-    PopClipRect();
-    PopID();
-    window->DC.MenuBarOffset.x = window->DC.CursorPos.x - window->MenuBarRect().Min.x; // Save horizontal position so next append can reuse it. This is kinda equivalent to a per-layer CursorPos.
-    window->DC.GroupStack.back().AdvanceCursor = false;
-    EndGroup(); // Restore position on layer 0
-    window->DC.LayoutType = ImGuiLayoutType_Vertical;
-    window->DC.NavLayerCurrent--;
-    window->DC.NavLayerCurrentMask >>= 1;
-    window->DC.MenuBarAppending = false;
-}
-
-bool ImGui::BeginMenu(const char* label, bool enabled)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const ImGuiID id = window->GetID(label);
-
-    ImVec2 label_size = CalcTextSize(label, NULL, true);
-
-    bool pressed;
-    bool menu_is_open = IsPopupOpen(id);
-    bool menuset_is_open = !(window->Flags & ImGuiWindowFlags_Popup) && (g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].OpenParentId == window->IDStack.back());
-    ImGuiWindow* backed_nav_window = g.NavWindow;
-    if (menuset_is_open)
-        g.NavWindow = window;  // Odd hack to allow hovering across menus of a same menu-set (otherwise we wouldn't be able to hover parent)
-
-    // The reference position stored in popup_pos will be used by Begin() to find a suitable position for the child menu (using FindBestWindowPosForPopup).
-    ImVec2 popup_pos, pos = window->DC.CursorPos;
-    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
-    {
-        // Menu inside an horizontal menu bar
-        // Selectable extend their highlight by half ItemSpacing in each direction.
-        // For ChildMenu, the popup position will be overwritten by the call to FindBestWindowPosForPopup() in Begin()
-        popup_pos = ImVec2(pos.x - window->WindowPadding.x, pos.y - style.FramePadding.y + window->MenuBarHeight());
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
-        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
-        float w = label_size.x;
-        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
-        PopStyleVar();
-        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
-    }
-    else
-    {
-        // Menu inside a menu
-        popup_pos = ImVec2(pos.x, pos.y - style.WindowPadding.y);
-        float w = window->MenuColumns.DeclColumns(label_size.x, 0.0f, (float)(int)(g.FontSize * 1.20f)); // Feedback to next frame
-        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
-        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | ImGuiSelectableFlags_DrawFillAvailWidth | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
-        if (!enabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
-        RenderArrow(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.30f, 0.0f), ImGuiDir_Right);
-        if (!enabled) PopStyleColor();
-    }
-
-    const bool hovered = enabled && ItemHoverable(window->DC.LastItemRect, id);
-    if (menuset_is_open)
-        g.NavWindow = backed_nav_window;
-
-    bool want_open = false, want_close = false;
-    if (window->DC.LayoutType == ImGuiLayoutType_Vertical) // (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
-    {
-        // Implement http://bjk5.com/post/44698559168/breaking-down-amazons-mega-dropdown to avoid using timers, so menus feels more reactive.
-        bool moving_within_opened_triangle = false;
-        if (g.HoveredWindow == window && g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].ParentWindow == window && !(window->Flags & ImGuiWindowFlags_MenuBar))
-        {
-            if (ImGuiWindow* next_window = g.OpenPopupStack[g.CurrentPopupStack.Size].Window)
-            {
-                ImRect next_window_rect = next_window->Rect();
-                ImVec2 ta = g.IO.MousePos - g.IO.MouseDelta;
-                ImVec2 tb = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetTL() : next_window_rect.GetTR();
-                ImVec2 tc = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetBL() : next_window_rect.GetBR();
-                float extra = ImClamp(ImFabs(ta.x - tb.x) * 0.30f, 5.0f, 30.0f); // add a bit of extra slack.
-                ta.x += (window->Pos.x < next_window->Pos.x) ? -0.5f : +0.5f;   // to avoid numerical issues
-                tb.y = ta.y + ImMax((tb.y - extra) - ta.y, -100.0f);            // triangle is maximum 200 high to limit the slope and the bias toward large sub-menus // FIXME: Multiply by fb_scale?
-                tc.y = ta.y + ImMin((tc.y + extra) - ta.y, +100.0f);
-                moving_within_opened_triangle = ImTriangleContainsPoint(ta, tb, tc, g.IO.MousePos);
-                //window->DrawList->PushClipRectFullScreen(); window->DrawList->AddTriangleFilled(ta, tb, tc, moving_within_opened_triangle ? IM_COL32(0,128,0,128) : IM_COL32(128,0,0,128)); window->DrawList->PopClipRect(); // Debug
-            }
-        }
-
-        want_close = (menu_is_open && !hovered && g.HoveredWindow == window && g.HoveredIdPreviousFrame != 0 && g.HoveredIdPreviousFrame != id && !moving_within_opened_triangle);
-        want_open = (!menu_is_open && hovered && !moving_within_opened_triangle) || (!menu_is_open && hovered && pressed);
-
-        if (g.NavActivateId == id)
-        {
-            want_close = menu_is_open;
-            want_open = !menu_is_open;
-        }
-        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right) // Nav-Right to open
-        {
-            want_open = true;
-            NavMoveRequestCancel();
-        }
-    }
-    else
-    {
-        // Menu bar
-        if (menu_is_open && pressed && menuset_is_open) // Click an open menu again to close it
-        {
-            want_close = true;
-            want_open = menu_is_open = false;
-        }
-        else if (pressed || (hovered && menuset_is_open && !menu_is_open)) // First click to open, then hover to open others
-        {
-            want_open = true;
-        }
-        else if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Down) // Nav-Down to open
-        {
-            want_open = true;
-            NavMoveRequestCancel();
-        }
-    }
-
-    if (!enabled) // explicitly close if an open menu becomes disabled, facilitate users code a lot in pattern such as 'if (BeginMenu("options", has_object)) { ..use object.. }'
-        want_close = true;
-    if (want_close && IsPopupOpen(id))
-        ClosePopupToLevel(g.CurrentPopupStack.Size);
-
-    if (!menu_is_open && want_open && g.OpenPopupStack.Size > g.CurrentPopupStack.Size)
-    {
-        // Don't recycle same menu level in the same frame, first close the other menu and yield for a frame.
-        OpenPopup(label);
-        return false;
-    }
-
-    menu_is_open |= want_open;
-    if (want_open)
-        OpenPopup(label);
-
-    if (menu_is_open)
-    {
-        // Sub-menus are ChildWindow so that mouse can be hovering across them (otherwise top-most popup menu would steal focus and not allow hovering on parent menu)
-        SetNextWindowPos(popup_pos, ImGuiCond_Always);
-        ImGuiWindowFlags flags = ImGuiWindowFlags_ChildMenu | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoNavFocus;
-        if (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
-            flags |= ImGuiWindowFlags_ChildWindow;
-        menu_is_open = BeginPopupEx(id, flags); // menu_is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-    }
-
-    return menu_is_open;
-}
-
-void ImGui::EndMenu()
-{
-    // Nav: When a left move request _within our child menu_ failed, close the menu.
-    // A menu doesn't close itself because EndMenuBar() wants the catch the last Left<>Right inputs.
-    // However, it means that with the current code, a BeginMenu() from outside another menu or a menu-bar won't be closable with the Left direction.
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    if (g.NavWindow && g.NavWindow->ParentWindow == window && g.NavMoveDir == ImGuiDir_Left && NavMoveRequestButNoResultYet() && window->DC.LayoutType == ImGuiLayoutType_Vertical)
-    {
-        ClosePopupToLevel(g.OpenPopupStack.Size - 1);
-        NavMoveRequestCancel();
-    }
-
-    EndPopup();
-}
-
-// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-void ImGui::ColorTooltip(const char* text, const float* col, ImGuiColorEditFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-
-    int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
-    BeginTooltipEx(0, true);
-
-    const char* text_end = text ? FindRenderedTextEnd(text, NULL) : text;
-    if (text_end > text)
-    {
-        TextUnformatted(text, text_end);
-        Separator();
-    }
-
-    ImVec2 sz(g.FontSize * 3 + g.Style.FramePadding.y * 2, g.FontSize * 3 + g.Style.FramePadding.y * 2);
-    ColorButton("##preview", ImVec4(col[0], col[1], col[2], col[3]), (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf)) | ImGuiColorEditFlags_NoTooltip, sz);
-    SameLine();
-    if (flags & ImGuiColorEditFlags_NoAlpha)
-        Text("#%02X%02X%02X\nR: %d, G: %d, B: %d\n(%.3f, %.3f, %.3f)", cr, cg, cb, cr, cg, cb, col[0], col[1], col[2]);
-    else
-        Text("#%02X%02X%02X%02X\nR:%d, G:%d, B:%d, A:%d\n(%.3f, %.3f, %.3f, %.3f)", cr, cg, cb, ca, cr, cg, cb, ca, col[0], col[1], col[2], col[3]);
-    EndTooltip();
-}
-
-static inline ImU32 ImAlphaBlendColor(ImU32 col_a, ImU32 col_b)
-{
-    float t = ((col_b >> IM_COL32_A_SHIFT) & 0xFF) / 255.f;
-    int r = ImLerp((int)(col_a >> IM_COL32_R_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_R_SHIFT) & 0xFF, t);
-    int g = ImLerp((int)(col_a >> IM_COL32_G_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_G_SHIFT) & 0xFF, t);
-    int b = ImLerp((int)(col_a >> IM_COL32_B_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_B_SHIFT) & 0xFF, t);
-    return IM_COL32(r, g, b, 0xFF);
-}
-
-// NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Caller currently responsible for avoiding that.
-// I spent a non reasonable amount of time trying to getting this right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and offsets, and eventually gave up... probably more reasonable to disable rounding alltogether.
-void ImGui::RenderColorRectWithAlphaCheckerboard(ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, int rounding_corners_flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF)
-    {
-        ImU32 col_bg1 = GetColorU32(ImAlphaBlendColor(IM_COL32(204,204,204,255), col));
-        ImU32 col_bg2 = GetColorU32(ImAlphaBlendColor(IM_COL32(128,128,128,255), col));
-        window->DrawList->AddRectFilled(p_min, p_max, col_bg1, rounding, rounding_corners_flags);
-
-        int yi = 0;
-        for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++)
-        {
-            float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y);
-            if (y2 <= y1)
-                continue;
-            for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f)
-            {
-                float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x);
-                if (x2 <= x1)
-                    continue;
-                int rounding_corners_flags_cell = 0;
-                if (y1 <= p_min.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopRight; }
-                if (y2 >= p_max.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotRight; }
-                rounding_corners_flags_cell &= rounding_corners_flags;
-                window->DrawList->AddRectFilled(ImVec2(x1,y1), ImVec2(x2,y2), col_bg2, rounding_corners_flags_cell ? rounding : 0.0f, rounding_corners_flags_cell);
-            }
-        }
-    }
-    else
-    {
-        window->DrawList->AddRectFilled(p_min, p_max, col, rounding, rounding_corners_flags);
-    }
-}
-
-void ImGui::SetColorEditOptions(ImGuiColorEditFlags flags)
-{
-    ImGuiContext& g = *GImGui;
-    if ((flags & ImGuiColorEditFlags__InputsMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__InputsMask;
-    if ((flags & ImGuiColorEditFlags__DataTypeMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__DataTypeMask;
-    if ((flags & ImGuiColorEditFlags__PickerMask) == 0)
-        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__PickerMask;
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__InputsMask)));   // Check only 1 option is selected
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__DataTypeMask))); // Check only 1 option is selected
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask)));   // Check only 1 option is selected
-    g.ColorEditOptions = flags;
-}
-
-// A little colored square. Return true when clicked.
-// FIXME: May want to display/ignore the alpha component in the color display? Yet show it in the tooltip.
-// 'desc_id' is not called 'label' because we don't display it next to the button, but only in the tooltip.
-bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFlags flags, ImVec2 size)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiID id = window->GetID(desc_id);
-    float default_size = GetFrameHeight();
-    if (size.x == 0.0f)
-        size.x = default_size;
-    if (size.y == 0.0f)
-        size.y = default_size;
-    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
-    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
-    if (!ItemAdd(bb, id))
-        return false;
-
-    bool hovered, held;
-    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
-
-    if (flags & ImGuiColorEditFlags_NoAlpha)
-        flags &= ~(ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf);
-
-    ImVec4 col_without_alpha(col.x, col.y, col.z, 1.0f);
-    float grid_step = ImMin(size.x, size.y) / 2.99f;
-    float rounding = ImMin(g.Style.FrameRounding, grid_step * 0.5f);
-    ImRect bb_inner = bb;
-    float off = -0.75f; // The border (using Col_FrameBg) tends to look off when color is near-opaque and rounding is enabled. This offset seemed like a good middle ground to reduce those artifacts.
-    bb_inner.Expand(off);
-    if ((flags & ImGuiColorEditFlags_AlphaPreviewHalf) && col.w < 1.0f)
-    {
-        float mid_x = (float)(int)((bb_inner.Min.x + bb_inner.Max.x) * 0.5f + 0.5f);
-        RenderColorRectWithAlphaCheckerboard(ImVec2(bb_inner.Min.x + grid_step, bb_inner.Min.y), bb_inner.Max, GetColorU32(col), grid_step, ImVec2(-grid_step + off, off), rounding, ImDrawCornerFlags_TopRight| ImDrawCornerFlags_BotRight);
-        window->DrawList->AddRectFilled(bb_inner.Min, ImVec2(mid_x, bb_inner.Max.y), GetColorU32(col_without_alpha), rounding, ImDrawCornerFlags_TopLeft|ImDrawCornerFlags_BotLeft);
-    }
-    else
-    {
-        // Because GetColorU32() multiplies by the global style Alpha and we don't want to display a checkerboard if the source code had no alpha
-        ImVec4 col_source = (flags & ImGuiColorEditFlags_AlphaPreview) ? col : col_without_alpha;
-        if (col_source.w < 1.0f)
-            RenderColorRectWithAlphaCheckerboard(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), grid_step, ImVec2(off, off), rounding);
-        else
-            window->DrawList->AddRectFilled(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), rounding, ImDrawCornerFlags_All);
-    }
-    RenderNavHighlight(bb, id);
-    if (g.Style.FrameBorderSize > 0.0f)
-        RenderFrameBorder(bb.Min, bb.Max, rounding);
-    else
-        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), rounding); // Color button are often in need of some sort of border
-
-    // Drag and Drop Source
-    // NB: The ActiveId test is merely an optional micro-optimization, BeginDragDropSource() does the same test.
-    if (g.ActiveId == id && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropSource())
-    {
-        if (flags & ImGuiColorEditFlags_NoAlpha)
-            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F, &col, sizeof(float) * 3, ImGuiCond_Once);
-        else
-            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F, &col, sizeof(float) * 4, ImGuiCond_Once);
-        ColorButton(desc_id, col, flags);
-        SameLine();
-        TextUnformatted("Color");
-        EndDragDropSource();
-    }
-
-    // Tooltip
-    if (!(flags & ImGuiColorEditFlags_NoTooltip) && hovered)
-        ColorTooltip(desc_id, &col.x, flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf));
-
-    if (pressed)
-        MarkItemEdited(id);
-
-    return pressed;
-}
-
-bool ImGui::ColorEdit3(const char* label, float col[3], ImGuiColorEditFlags flags)
-{
-    return ColorEdit4(label, col, flags | ImGuiColorEditFlags_NoAlpha);
-}
-
-void ImGui::ColorEditOptionsPopup(const float* col, ImGuiColorEditFlags flags)
-{
-    bool allow_opt_inputs = !(flags & ImGuiColorEditFlags__InputsMask);
-    bool allow_opt_datatype = !(flags & ImGuiColorEditFlags__DataTypeMask);
-    if ((!allow_opt_inputs && !allow_opt_datatype) || !BeginPopup("context"))
-        return;
-    ImGuiContext& g = *GImGui;
-    ImGuiColorEditFlags opts = g.ColorEditOptions;
-    if (allow_opt_inputs)
-    {
-        if (RadioButton("RGB", (opts & ImGuiColorEditFlags_RGB) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_RGB;
-        if (RadioButton("HSV", (opts & ImGuiColorEditFlags_HSV) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HSV;
-        if (RadioButton("HEX", (opts & ImGuiColorEditFlags_HEX) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HEX;
-    }
-    if (allow_opt_datatype)
-    {
-        if (allow_opt_inputs) Separator();
-        if (RadioButton("0..255",     (opts & ImGuiColorEditFlags_Uint8) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Uint8;
-        if (RadioButton("0.00..1.00", (opts & ImGuiColorEditFlags_Float) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Float;
-    }
-
-    if (allow_opt_inputs || allow_opt_datatype)
-        Separator();
-    if (Button("Copy as..", ImVec2(-1,0)))
-        OpenPopup("Copy");
-    if (BeginPopup("Copy"))
-    {
-        int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
-        char buf[64];
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%.3ff, %.3ff, %.3ff, %.3ff)", col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%d,%d,%d,%d)", cr, cg, cb, ca);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        if (flags & ImGuiColorEditFlags_NoAlpha)
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X", cr, cg, cb);
-        else
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X%02X", cr, cg, cb, ca);
-        if (Selectable(buf))
-            SetClipboardText(buf);
-        EndPopup();
-    }
-
-    g.ColorEditOptions = opts;
-    EndPopup();
-}
-
-void ImGui::ColorPickerOptionsPopup(const float* ref_col, ImGuiColorEditFlags flags)
-{
-    bool allow_opt_picker = !(flags & ImGuiColorEditFlags__PickerMask);
-    bool allow_opt_alpha_bar = !(flags & ImGuiColorEditFlags_NoAlpha) && !(flags & ImGuiColorEditFlags_AlphaBar);
-    if ((!allow_opt_picker && !allow_opt_alpha_bar) || !ImGui::BeginPopup("context"))
-        return;
-    ImGuiContext& g = *GImGui;
-    if (allow_opt_picker)
-    {
-        ImVec2 picker_size(g.FontSize * 8, ImMax(g.FontSize * 8 - (ImGui::GetFrameHeight() + g.Style.ItemInnerSpacing.x), 1.0f)); // FIXME: Picker size copied from main picker function
-        ImGui::PushItemWidth(picker_size.x);
-        for (int picker_type = 0; picker_type < 2; picker_type++)
-        {
-            // Draw small/thumbnail version of each picker type (over an invisible button for selection)
-            if (picker_type > 0) ImGui::Separator();
-            ImGui::PushID(picker_type);
-            ImGuiColorEditFlags picker_flags = ImGuiColorEditFlags_NoInputs|ImGuiColorEditFlags_NoOptions|ImGuiColorEditFlags_NoLabel|ImGuiColorEditFlags_NoSidePreview|(flags & ImGuiColorEditFlags_NoAlpha);
-            if (picker_type == 0) picker_flags |= ImGuiColorEditFlags_PickerHueBar;
-            if (picker_type == 1) picker_flags |= ImGuiColorEditFlags_PickerHueWheel;
-            ImVec2 backup_pos = ImGui::GetCursorScreenPos();
-            if (ImGui::Selectable("##selectable", false, 0, picker_size)) // By default, Selectable() is closing popup
-                g.ColorEditOptions = (g.ColorEditOptions & ~ImGuiColorEditFlags__PickerMask) | (picker_flags & ImGuiColorEditFlags__PickerMask);
-            ImGui::SetCursorScreenPos(backup_pos);
-            ImVec4 dummy_ref_col;
-            memcpy(&dummy_ref_col.x, ref_col, sizeof(float) * (picker_flags & ImGuiColorEditFlags_NoAlpha ? 3 : 4));
-            ImGui::ColorPicker4("##dummypicker", &dummy_ref_col.x, picker_flags);
-            ImGui::PopID();
-        }
-        ImGui::PopItemWidth();
-    }
-    if (allow_opt_alpha_bar)
-    {
-        if (allow_opt_picker) ImGui::Separator();
-        ImGui::CheckboxFlags("Alpha Bar", (unsigned int*)&g.ColorEditOptions, ImGuiColorEditFlags_AlphaBar);
-    }
-    ImGui::EndPopup();
-}
-
-// Edit colors components (each component in 0.0f..1.0f range).
-// See enum ImGuiColorEditFlags_ for available options. e.g. Only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-// With typical options: Left-click on colored square to open color picker. Right-click to open option menu. CTRL-Click over input fields to edit them and TAB to go to next item.
-bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    if (window->SkipItems)
-        return false;
-
-    ImGuiContext& g = *GImGui;
-    const ImGuiStyle& style = g.Style;
-    const float square_sz = GetFrameHeight();
-    const float w_extra = (flags & ImGuiColorEditFlags_NoSmallPreview) ? 0.0f : (square_sz + style.ItemInnerSpacing.x);
-    const float w_items_all = CalcItemWidth() - w_extra;
-    const char* label_display_end = FindRenderedTextEnd(label);
-
-    BeginGroup();
-    PushID(label);
-
-    // If we're not showing any slider there's no point in doing any HSV conversions
-    const ImGuiColorEditFlags flags_untouched = flags;
-    if (flags & ImGuiColorEditFlags_NoInputs)
-        flags = (flags & (~ImGuiColorEditFlags__InputsMask)) | ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_NoOptions;
-
-    // Context menu: display and modify options (before defaults are applied)
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-        ColorEditOptionsPopup(col, flags);
-
-    // Read stored options
-    if (!(flags & ImGuiColorEditFlags__InputsMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__InputsMask);
-    if (!(flags & ImGuiColorEditFlags__DataTypeMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__DataTypeMask);
-    if (!(flags & ImGuiColorEditFlags__PickerMask))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__PickerMask);
-    flags |= (g.ColorEditOptions & ~(ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask));
-
-    const bool alpha = (flags & ImGuiColorEditFlags_NoAlpha) == 0;
-    const bool hdr = (flags & ImGuiColorEditFlags_HDR) != 0;
-    const int components = alpha ? 4 : 3;
-
-    // Convert to the formats we need
-    float f[4] = { col[0], col[1], col[2], alpha ? col[3] : 1.0f };
-    if (flags & ImGuiColorEditFlags_HSV)
-        ColorConvertRGBtoHSV(f[0], f[1], f[2], f[0], f[1], f[2]);
-    int i[4] = { IM_F32_TO_INT8_UNBOUND(f[0]), IM_F32_TO_INT8_UNBOUND(f[1]), IM_F32_TO_INT8_UNBOUND(f[2]), IM_F32_TO_INT8_UNBOUND(f[3]) };
-
-    bool value_changed = false;
-    bool value_changed_as_float = false;
-
-    if ((flags & (ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_HSV)) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        // RGB/HSV 0..255 Sliders
-        const float w_item_one  = ImMax(1.0f, (float)(int)((w_items_all - (style.ItemInnerSpacing.x) * (components-1)) / (float)components));
-        const float w_item_last = ImMax(1.0f, (float)(int)(w_items_all - (w_item_one + style.ItemInnerSpacing.x) * (components-1)));
-
-        const bool hide_prefix = (w_item_one <= CalcTextSize((flags & ImGuiColorEditFlags_Float) ? "M:0.000" : "M:000").x);
-        const char* ids[4] = { "##X", "##Y", "##Z", "##W" };
-        const char* fmt_table_int[3][4] =
-        {
-            {   "%3d",   "%3d",   "%3d",   "%3d" }, // Short display
-            { "R:%3d", "G:%3d", "B:%3d", "A:%3d" }, // Long display for RGBA
-            { "H:%3d", "S:%3d", "V:%3d", "A:%3d" }  // Long display for HSVA
-        };
-        const char* fmt_table_float[3][4] =
-        {
-            {   "%0.3f",   "%0.3f",   "%0.3f",   "%0.3f" }, // Short display
-            { "R:%0.3f", "G:%0.3f", "B:%0.3f", "A:%0.3f" }, // Long display for RGBA
-            { "H:%0.3f", "S:%0.3f", "V:%0.3f", "A:%0.3f" }  // Long display for HSVA
-        };
-        const int fmt_idx = hide_prefix ? 0 : (flags & ImGuiColorEditFlags_HSV) ? 2 : 1;
-
-        PushItemWidth(w_item_one);
-        for (int n = 0; n < components; n++)
-        {
-            if (n > 0)
-                SameLine(0, style.ItemInnerSpacing.x);
-            if (n + 1 == components)
-                PushItemWidth(w_item_last);
-            if (flags & ImGuiColorEditFlags_Float)
-                value_changed = value_changed_as_float = value_changed | DragFloat(ids[n], &f[n], 1.0f/255.0f, 0.0f, hdr ? 0.0f : 1.0f, fmt_table_float[fmt_idx][n]);
-            else
-                value_changed |= DragInt(ids[n], &i[n], 1.0f, 0, hdr ? 0 : 255, fmt_table_int[fmt_idx][n]);
-            if (!(flags & ImGuiColorEditFlags_NoOptions))
-                OpenPopupOnItemClick("context");
-        }
-        PopItemWidth();
-        PopItemWidth();
-    }
-    else if ((flags & ImGuiColorEditFlags_HEX) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        // RGB Hexadecimal Input
-        char buf[64];
-        if (alpha)
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255), ImClamp(i[3],0,255));
-        else
-            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255));
-        PushItemWidth(w_items_all);
-        if (InputText("##Text", buf, IM_ARRAYSIZE(buf), ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase))
-        {
-            value_changed = true;
-            char* p = buf;
-            while (*p == '#' || ImCharIsBlankA(*p))
-                p++;
-            i[0] = i[1] = i[2] = i[3] = 0;
-            if (alpha)
-                sscanf(p, "%02X%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2], (unsigned int*)&i[3]); // Treat at unsigned (%X is unsigned)
-            else
-                sscanf(p, "%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2]);
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-        PopItemWidth();
-    }
-
-    ImGuiWindow* picker_active_window = NULL;
-    if (!(flags & ImGuiColorEditFlags_NoSmallPreview))
-    {
-        if (!(flags & ImGuiColorEditFlags_NoInputs))
-            SameLine(0, style.ItemInnerSpacing.x);
-
-        const ImVec4 col_v4(col[0], col[1], col[2], alpha ? col[3] : 1.0f);
-        if (ColorButton("##ColorButton", col_v4, flags))
-        {
-            if (!(flags & ImGuiColorEditFlags_NoPicker))
-            {
-                // Store current color and open a picker
-                g.ColorPickerRef = col_v4;
-                OpenPopup("picker");
-                SetNextWindowPos(window->DC.LastItemRect.GetBL() + ImVec2(-1,style.ItemSpacing.y));
-            }
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-
-        if (BeginPopup("picker"))
-        {
-            picker_active_window = g.CurrentWindow;
-            if (label != label_display_end)
-            {
-                TextUnformatted(label, label_display_end);
-                Separator();
-            }
-            ImGuiColorEditFlags picker_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaBar;
-            ImGuiColorEditFlags picker_flags = (flags_untouched & picker_flags_to_forward) | ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags_NoLabel | ImGuiColorEditFlags_AlphaPreviewHalf;
-            PushItemWidth(square_sz * 12.0f); // Use 256 + bar sizes?
-            value_changed |= ColorPicker4("##picker", col, picker_flags, &g.ColorPickerRef.x);
-            PopItemWidth();
-            EndPopup();
-        }
-    }
-
-    if (label != label_display_end && !(flags & ImGuiColorEditFlags_NoLabel))
-    {
-        SameLine(0, style.ItemInnerSpacing.x);
-        TextUnformatted(label, label_display_end);
-    }
-
-    // Convert back
-    if (picker_active_window == NULL)
-    {
-        if (!value_changed_as_float)
-            for (int n = 0; n < 4; n++)
-                f[n] = i[n] / 255.0f;
-        if (flags & ImGuiColorEditFlags_HSV)
-            ColorConvertHSVtoRGB(f[0], f[1], f[2], f[0], f[1], f[2]);
-        if (value_changed)
-        {
-            col[0] = f[0];
-            col[1] = f[1];
-            col[2] = f[2];
-            if (alpha)
-                col[3] = f[3];
-        }
-    }
-
-    PopID();
-    EndGroup();
-
-    // Drag and Drop Target
-    // NB: The flag test is merely an optional micro-optimization, BeginDragDropTarget() does the same test.
-    if ((window->DC.LastItemStatusFlags & ImGuiItemStatusFlags_HoveredRect) && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropTarget())
-    {
-        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F))
-        {
-            memcpy((float*)col, payload->Data, sizeof(float) * 3);
-            value_changed = true;
-        }
-        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F))
-        {
-            memcpy((float*)col, payload->Data, sizeof(float) * components);
-            value_changed = true;
-        }
-        EndDragDropTarget();
-    }
-
-    // When picker is being actively used, use its active id so IsItemActive() will function on ColorEdit4().
-    if (picker_active_window && g.ActiveId != 0 && g.ActiveIdWindow == picker_active_window)
-        window->DC.LastItemId = g.ActiveId;
-
-    if (value_changed)
-        MarkItemEdited(window->DC.LastItemId);
-
-    return value_changed;
-}
-
-bool ImGui::ColorPicker3(const char* label, float col[3], ImGuiColorEditFlags flags)
-{
-    float col4[4] = { col[0], col[1], col[2], 1.0f };
-    if (!ColorPicker4(label, col4, flags | ImGuiColorEditFlags_NoAlpha))
-        return false;
-    col[0] = col4[0]; col[1] = col4[1]; col[2] = col4[2];
-    return true;
-}
-
-static void RenderArrowsForVerticalBar(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, float bar_w)
-{
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x + 1,         pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Right, IM_COL32_BLACK);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x,             pos.y), half_sz,                              ImGuiDir_Right, IM_COL32_WHITE);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x - 1, pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Left,  IM_COL32_BLACK);
-    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x,     pos.y), half_sz,                              ImGuiDir_Left,  IM_COL32_WHITE);
-}
-
-// ColorPicker
-// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
-// FIXME: we adjust the big color square height based on item width, which may cause a flickering feedback loop (if automatic height makes a vertical scrollbar appears, affecting automatic width..)
-bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags flags, const float* ref_col)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    ImDrawList* draw_list = window->DrawList;
-
-    ImGuiStyle& style = g.Style;
-    ImGuiIO& io = g.IO;
-
-    PushID(label);
-    BeginGroup();
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-        flags |= ImGuiColorEditFlags_NoSmallPreview;
-
-    // Context menu: display and store options.
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-
-    // Read stored options
-    if (!(flags & ImGuiColorEditFlags__PickerMask))
-        flags |= ((g.ColorEditOptions & ImGuiColorEditFlags__PickerMask) ? g.ColorEditOptions : ImGuiColorEditFlags__OptionsDefault) & ImGuiColorEditFlags__PickerMask;
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask))); // Check that only 1 is selected
-    if (!(flags & ImGuiColorEditFlags_NoOptions))
-        flags |= (g.ColorEditOptions & ImGuiColorEditFlags_AlphaBar);
-
-    // Setup
-    int components = (flags & ImGuiColorEditFlags_NoAlpha) ? 3 : 4;
-    bool alpha_bar = (flags & ImGuiColorEditFlags_AlphaBar) && !(flags & ImGuiColorEditFlags_NoAlpha);
-    ImVec2 picker_pos = window->DC.CursorPos;
-    float square_sz = GetFrameHeight();
-    float bars_width = square_sz; // Arbitrary smallish width of Hue/Alpha picking bars
-    float sv_picker_size = ImMax(bars_width * 1, CalcItemWidth() - (alpha_bar ? 2 : 1) * (bars_width + style.ItemInnerSpacing.x)); // Saturation/Value picking box
-    float bar0_pos_x = picker_pos.x + sv_picker_size + style.ItemInnerSpacing.x;
-    float bar1_pos_x = bar0_pos_x + bars_width + style.ItemInnerSpacing.x;
-    float bars_triangles_half_sz = (float)(int)(bars_width * 0.20f);
-
-    float backup_initial_col[4];
-    memcpy(backup_initial_col, col, components * sizeof(float));
-
-    float wheel_thickness = sv_picker_size * 0.08f;
-    float wheel_r_outer = sv_picker_size * 0.50f;
-    float wheel_r_inner = wheel_r_outer - wheel_thickness;
-    ImVec2 wheel_center(picker_pos.x + (sv_picker_size + bars_width)*0.5f, picker_pos.y + sv_picker_size*0.5f);
-
-    // Note: the triangle is displayed rotated with triangle_pa pointing to Hue, but most coordinates stays unrotated for logic.
-    float triangle_r = wheel_r_inner - (int)(sv_picker_size * 0.027f);
-    ImVec2 triangle_pa = ImVec2(triangle_r, 0.0f); // Hue point.
-    ImVec2 triangle_pb = ImVec2(triangle_r * -0.5f, triangle_r * -0.866025f); // Black point.
-    ImVec2 triangle_pc = ImVec2(triangle_r * -0.5f, triangle_r * +0.866025f); // White point.
-
-    float H,S,V;
-    ColorConvertRGBtoHSV(col[0], col[1], col[2], H, S, V);
-
-    bool value_changed = false, value_changed_h = false, value_changed_sv = false;
-
-    PushItemFlag(ImGuiItemFlags_NoNav, true);
-    if (flags & ImGuiColorEditFlags_PickerHueWheel)
-    {
-        // Hue wheel + SV triangle logic
-        InvisibleButton("hsv", ImVec2(sv_picker_size + style.ItemInnerSpacing.x + bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            ImVec2 initial_off = g.IO.MouseClickedPos[0] - wheel_center;
-            ImVec2 current_off = g.IO.MousePos - wheel_center;
-            float initial_dist2 = ImLengthSqr(initial_off);
-            if (initial_dist2 >= (wheel_r_inner-1)*(wheel_r_inner-1) && initial_dist2 <= (wheel_r_outer+1)*(wheel_r_outer+1))
-            {
-                // Interactive with Hue wheel
-                H = ImAtan2(current_off.y, current_off.x) / IM_PI*0.5f;
-                if (H < 0.0f)
-                    H += 1.0f;
-                value_changed = value_changed_h = true;
-            }
-            float cos_hue_angle = ImCos(-H * 2.0f * IM_PI);
-            float sin_hue_angle = ImSin(-H * 2.0f * IM_PI);
-            if (ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, ImRotate(initial_off, cos_hue_angle, sin_hue_angle)))
-            {
-                // Interacting with SV triangle
-                ImVec2 current_off_unrotated = ImRotate(current_off, cos_hue_angle, sin_hue_angle);
-                if (!ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated))
-                    current_off_unrotated = ImTriangleClosestPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated);
-                float uu, vv, ww;
-                ImTriangleBarycentricCoords(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated, uu, vv, ww);
-                V = ImClamp(1.0f - vv, 0.0001f, 1.0f);
-                S = ImClamp(uu / V, 0.0001f, 1.0f);
-                value_changed = value_changed_sv = true;
-            }
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-    }
-    else if (flags & ImGuiColorEditFlags_PickerHueBar)
-    {
-        // SV rectangle logic
-        InvisibleButton("sv", ImVec2(sv_picker_size, sv_picker_size));
-        if (IsItemActive())
-        {
-            S = ImSaturate((io.MousePos.x - picker_pos.x) / (sv_picker_size-1));
-            V = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = value_changed_sv = true;
-        }
-        if (!(flags & ImGuiColorEditFlags_NoOptions))
-            OpenPopupOnItemClick("context");
-
-        // Hue bar logic
-        SetCursorScreenPos(ImVec2(bar0_pos_x, picker_pos.y));
-        InvisibleButton("hue", ImVec2(bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            H = ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = value_changed_h = true;
-        }
-    }
-
-    // Alpha bar logic
-    if (alpha_bar)
-    {
-        SetCursorScreenPos(ImVec2(bar1_pos_x, picker_pos.y));
-        InvisibleButton("alpha", ImVec2(bars_width, sv_picker_size));
-        if (IsItemActive())
-        {
-            col[3] = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
-            value_changed = true;
-        }
-    }
-    PopItemFlag(); // ImGuiItemFlags_NoNav
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-    {
-        SameLine(0, style.ItemInnerSpacing.x);
-        BeginGroup();
-    }
-
-    if (!(flags & ImGuiColorEditFlags_NoLabel))
-    {
-        const char* label_display_end = FindRenderedTextEnd(label);
-        if (label != label_display_end)
-        {
-            if ((flags & ImGuiColorEditFlags_NoSidePreview))
-                SameLine(0, style.ItemInnerSpacing.x);
-            TextUnformatted(label, label_display_end);
-        }
-    }
-
-    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
-    {
-        PushItemFlag(ImGuiItemFlags_NoNavDefaultFocus, true);
-        ImVec4 col_v4(col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
-        if ((flags & ImGuiColorEditFlags_NoLabel))
-            Text("Current");
-        ColorButton("##current", col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2));
-        if (ref_col != NULL)
-        {
-            Text("Original");
-            ImVec4 ref_col_v4(ref_col[0], ref_col[1], ref_col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : ref_col[3]);
-            if (ColorButton("##original", ref_col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2)))
-            {
-                memcpy(col, ref_col, components * sizeof(float));
-                value_changed = true;
-            }
-        }
-        PopItemFlag();
-        EndGroup();
-    }
-
-    // Convert back color to RGB
-    if (value_changed_h || value_changed_sv)
-        ColorConvertHSVtoRGB(H >= 1.0f ? H - 10 * 1e-6f : H, S > 0.0f ? S : 10*1e-6f, V > 0.0f ? V : 1e-6f, col[0], col[1], col[2]);
-
-    // R,G,B and H,S,V slider color editor
-    bool value_changed_fix_hue_wrap = false;
-    if ((flags & ImGuiColorEditFlags_NoInputs) == 0)
-    {
-        PushItemWidth((alpha_bar ? bar1_pos_x : bar0_pos_x) + bars_width - picker_pos.x);
-        ImGuiColorEditFlags sub_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoOptions | ImGuiColorEditFlags_NoSmallPreview | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf;
-        ImGuiColorEditFlags sub_flags = (flags & sub_flags_to_forward) | ImGuiColorEditFlags_NoPicker;
-        if (flags & ImGuiColorEditFlags_RGB || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            if (ColorEdit4("##rgb", col, sub_flags | ImGuiColorEditFlags_RGB))
-            {
-                // FIXME: Hackily differenciating using the DragInt (ActiveId != 0 && !ActiveIdAllowOverlap) vs. using the InputText or DropTarget.
-                // For the later we don't want to run the hue-wrap canceling code. If you are well versed in HSV picker please provide your input! (See #2050)
-                value_changed_fix_hue_wrap = (g.ActiveId != 0 && !g.ActiveIdAllowOverlap);
-                value_changed = true;
-            }
-        if (flags & ImGuiColorEditFlags_HSV || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            value_changed |= ColorEdit4("##hsv", col, sub_flags | ImGuiColorEditFlags_HSV);
-        if (flags & ImGuiColorEditFlags_HEX || (flags & ImGuiColorEditFlags__InputsMask) == 0)
-            value_changed |= ColorEdit4("##hex", col, sub_flags | ImGuiColorEditFlags_HEX);
-        PopItemWidth();
-    }
-
-    // Try to cancel hue wrap (after ColorEdit4 call), if any
-    if (value_changed_fix_hue_wrap)
-    {
-        float new_H, new_S, new_V;
-        ColorConvertRGBtoHSV(col[0], col[1], col[2], new_H, new_S, new_V);
-        if (new_H <= 0 && H > 0)
-        {
-            if (new_V <= 0 && V != new_V)
-                ColorConvertHSVtoRGB(H, S, new_V <= 0 ? V * 0.5f : new_V, col[0], col[1], col[2]);
-            else if (new_S <= 0)
-                ColorConvertHSVtoRGB(H, new_S <= 0 ? S * 0.5f : new_S, new_V, col[0], col[1], col[2]);
-        }
-    }
-
-    ImVec4 hue_color_f(1, 1, 1, 1); ColorConvertHSVtoRGB(H, 1, 1, hue_color_f.x, hue_color_f.y, hue_color_f.z);
-    ImU32 hue_color32 = ColorConvertFloat4ToU32(hue_color_f);
-    ImU32 col32_no_alpha = ColorConvertFloat4ToU32(ImVec4(col[0], col[1], col[2], 1.0f));
-
-    const ImU32 hue_colors[6+1] = { IM_COL32(255,0,0,255), IM_COL32(255,255,0,255), IM_COL32(0,255,0,255), IM_COL32(0,255,255,255), IM_COL32(0,0,255,255), IM_COL32(255,0,255,255), IM_COL32(255,0,0,255) };
-    ImVec2 sv_cursor_pos;
-
-    if (flags & ImGuiColorEditFlags_PickerHueWheel)
-    {
-        // Render Hue Wheel
-        const float aeps = 1.5f / wheel_r_outer; // Half a pixel arc length in radians (2pi cancels out).
-        const int segment_per_arc = ImMax(4, (int)wheel_r_outer / 12);
-        for (int n = 0; n < 6; n++)
-        {
-            const float a0 = (n)     /6.0f * 2.0f * IM_PI - aeps;
-            const float a1 = (n+1.0f)/6.0f * 2.0f * IM_PI + aeps;
-            const int vert_start_idx = draw_list->VtxBuffer.Size;
-            draw_list->PathArcTo(wheel_center, (wheel_r_inner + wheel_r_outer)*0.5f, a0, a1, segment_per_arc);
-            draw_list->PathStroke(IM_COL32_WHITE, false, wheel_thickness);
-            const int vert_end_idx = draw_list->VtxBuffer.Size;
-
-            // Paint colors over existing vertices
-            ImVec2 gradient_p0(wheel_center.x + ImCos(a0) * wheel_r_inner, wheel_center.y + ImSin(a0) * wheel_r_inner);
-            ImVec2 gradient_p1(wheel_center.x + ImCos(a1) * wheel_r_inner, wheel_center.y + ImSin(a1) * wheel_r_inner);
-            ShadeVertsLinearColorGradientKeepAlpha(draw_list, vert_start_idx, vert_end_idx, gradient_p0, gradient_p1, hue_colors[n], hue_colors[n+1]);
-        }
-
-        // Render Cursor + preview on Hue Wheel
-        float cos_hue_angle = ImCos(H * 2.0f * IM_PI);
-        float sin_hue_angle = ImSin(H * 2.0f * IM_PI);
-        ImVec2 hue_cursor_pos(wheel_center.x + cos_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f, wheel_center.y + sin_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f);
-        float hue_cursor_rad = value_changed_h ? wheel_thickness * 0.65f : wheel_thickness * 0.55f;
-        int hue_cursor_segments = ImClamp((int)(hue_cursor_rad / 1.4f), 9, 32);
-        draw_list->AddCircleFilled(hue_cursor_pos, hue_cursor_rad, hue_color32, hue_cursor_segments);
-        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad+1, IM_COL32(128,128,128,255), hue_cursor_segments);
-        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad, IM_COL32_WHITE, hue_cursor_segments);
-
-        // Render SV triangle (rotated according to hue)
-        ImVec2 tra = wheel_center + ImRotate(triangle_pa, cos_hue_angle, sin_hue_angle);
-        ImVec2 trb = wheel_center + ImRotate(triangle_pb, cos_hue_angle, sin_hue_angle);
-        ImVec2 trc = wheel_center + ImRotate(triangle_pc, cos_hue_angle, sin_hue_angle);
-        ImVec2 uv_white = GetFontTexUvWhitePixel();
-        draw_list->PrimReserve(6, 6);
-        draw_list->PrimVtx(tra, uv_white, hue_color32);
-        draw_list->PrimVtx(trb, uv_white, hue_color32);
-        draw_list->PrimVtx(trc, uv_white, IM_COL32_WHITE);
-        draw_list->PrimVtx(tra, uv_white, IM_COL32_BLACK_TRANS);
-        draw_list->PrimVtx(trb, uv_white, IM_COL32_BLACK);
-        draw_list->PrimVtx(trc, uv_white, IM_COL32_BLACK_TRANS);
-        draw_list->AddTriangle(tra, trb, trc, IM_COL32(128,128,128,255), 1.5f);
-        sv_cursor_pos = ImLerp(ImLerp(trc, tra, ImSaturate(S)), trb, ImSaturate(1 - V));
-    }
-    else if (flags & ImGuiColorEditFlags_PickerHueBar)
-    {
-        // Render SV Square
-        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_WHITE, hue_color32, hue_color32, IM_COL32_WHITE);
-        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_BLACK_TRANS, IM_COL32_BLACK_TRANS, IM_COL32_BLACK, IM_COL32_BLACK);
-        RenderFrameBorder(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), 0.0f);
-        sv_cursor_pos.x = ImClamp((float)(int)(picker_pos.x + ImSaturate(S)     * sv_picker_size + 0.5f), picker_pos.x + 2, picker_pos.x + sv_picker_size - 2); // Sneakily prevent the circle to stick out too much
-        sv_cursor_pos.y = ImClamp((float)(int)(picker_pos.y + ImSaturate(1 - V) * sv_picker_size + 0.5f), picker_pos.y + 2, picker_pos.y + sv_picker_size - 2);
-
-        // Render Hue Bar
-        for (int i = 0; i < 6; ++i)
-            draw_list->AddRectFilledMultiColor(ImVec2(bar0_pos_x, picker_pos.y + i * (sv_picker_size / 6)), ImVec2(bar0_pos_x + bars_width, picker_pos.y + (i + 1) * (sv_picker_size / 6)), hue_colors[i], hue_colors[i], hue_colors[i + 1], hue_colors[i + 1]);
-        float bar0_line_y = (float)(int)(picker_pos.y + H * sv_picker_size + 0.5f);
-        RenderFrameBorder(ImVec2(bar0_pos_x, picker_pos.y), ImVec2(bar0_pos_x + bars_width, picker_pos.y + sv_picker_size), 0.0f);
-        RenderArrowsForVerticalBar(draw_list, ImVec2(bar0_pos_x - 1, bar0_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
-    }
-
-    // Render cursor/preview circle (clamp S/V within 0..1 range because floating points colors may lead HSV values to be out of range)
-    float sv_cursor_rad = value_changed_sv ? 10.0f : 6.0f;
-    draw_list->AddCircleFilled(sv_cursor_pos, sv_cursor_rad, col32_no_alpha, 12);
-    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad+1, IM_COL32(128,128,128,255), 12);
-    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad, IM_COL32_WHITE, 12);
-
-    // Render alpha bar
-    if (alpha_bar)
-    {
-        float alpha = ImSaturate(col[3]);
-        ImRect bar1_bb(bar1_pos_x, picker_pos.y, bar1_pos_x + bars_width, picker_pos.y + sv_picker_size);
-        RenderColorRectWithAlphaCheckerboard(bar1_bb.Min, bar1_bb.Max, IM_COL32(0,0,0,0), bar1_bb.GetWidth() / 2.0f, ImVec2(0.0f, 0.0f));
-        draw_list->AddRectFilledMultiColor(bar1_bb.Min, bar1_bb.Max, col32_no_alpha, col32_no_alpha, col32_no_alpha & ~IM_COL32_A_MASK, col32_no_alpha & ~IM_COL32_A_MASK);
-        float bar1_line_y = (float)(int)(picker_pos.y + (1.0f - alpha) * sv_picker_size + 0.5f);
-        RenderFrameBorder(bar1_bb.Min, bar1_bb.Max, 0.0f);
-        RenderArrowsForVerticalBar(draw_list, ImVec2(bar1_pos_x - 1, bar1_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
-    }
-
-    EndGroup();
-
-    if (value_changed && memcmp(backup_initial_col, col, components * sizeof(float)) == 0)
-        value_changed = false;
-    if (value_changed)
-        MarkItemEdited(window->DC.LastItemId);
-
-    PopID();
-
-    return value_changed;
-}
-
 // Horizontal/vertical separating line
 void ImGui::Separator()
 {
@@ -13082,7 +6107,7 @@
     window->DrawList->AddLine(bb.Min, ImVec2(bb.Max.x,bb.Min.y), GetColorU32(ImGuiCol_Separator));
 
     if (g.LogEnabled)
-            LogRenderedText(NULL, IM_NEWLINE "--------------------------------");
+        LogRenderedText(NULL, IM_NEWLINE "--------------------------------");
 
     if (window->DC.ColumnsSet)
     {
@@ -13309,6 +6334,1457 @@
     window->DC.LayoutType = backup_layout_type;
 }
 
+void ImGui::Indent(float indent_w)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    window->DC.Indent.x += (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
+    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
+}
+
+void ImGui::Unindent(float indent_w)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    window->DC.Indent.x -= (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
+    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
+}
+
+//-----------------------------------------------------------------------------
+// TOOLTIPS
+//-----------------------------------------------------------------------------
+
+void ImGui::BeginTooltip()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.DragDropWithinSourceOrTarget)
+    {
+        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
+        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
+        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
+        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
+        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
+        SetNextWindowPos(tooltip_pos);
+        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
+        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
+        BeginTooltipEx(0, true);
+    }
+    else
+    {
+        BeginTooltipEx(0, false);
+    }
+}
+
+// Not exposed publicly as BeginTooltip() because bool parameters are evil. Let's see if other needs arise first.
+void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, bool override_previous_tooltip)
+{
+    ImGuiContext& g = *GImGui;
+    char window_name[16];
+    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
+    if (override_previous_tooltip)
+        if (ImGuiWindow* window = FindWindowByName(window_name))
+            if (window->Active)
+            {
+                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
+                window->Hidden = true;
+                window->HiddenFramesRegular = 1;
+                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
+            }
+    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoInputs|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoNav;
+    Begin(window_name, NULL, flags | extra_flags);
+}
+
+void ImGui::EndTooltip()
+{
+    IM_ASSERT(GetCurrentWindowRead()->Flags & ImGuiWindowFlags_Tooltip);   // Mismatched BeginTooltip()/EndTooltip() calls
+    End();
+}
+
+void ImGui::SetTooltipV(const char* fmt, va_list args)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.DragDropWithinSourceOrTarget)
+        BeginTooltip();
+    else
+        BeginTooltipEx(0, true);
+    TextV(fmt, args);
+    EndTooltip();
+}
+
+void ImGui::SetTooltip(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    SetTooltipV(fmt, args);
+    va_end(args);
+}
+
+//-----------------------------------------------------------------------------
+// POPUPS
+//-----------------------------------------------------------------------------
+
+bool ImGui::IsPopupOpen(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == id;
+}
+
+bool ImGui::IsPopupOpen(const char* str_id)
+{
+    ImGuiContext& g = *GImGui;
+    return g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].PopupId == g.CurrentWindow->GetID(str_id);
+}
+
+ImGuiWindow* ImGui::GetFrontMostPopupModal()
+{
+    ImGuiContext& g = *GImGui;
+    for (int n = g.OpenPopupStack.Size-1; n >= 0; n--)
+        if (ImGuiWindow* popup = g.OpenPopupStack.Data[n].Window)
+            if (popup->Flags & ImGuiWindowFlags_Modal)
+                return popup;
+    return NULL;
+}
+
+void ImGui::OpenPopup(const char* str_id)
+{
+    ImGuiContext& g = *GImGui;
+    OpenPopupEx(g.CurrentWindow->GetID(str_id));
+}
+
+// Mark popup as open (toggle toward open state).
+// Popups are closed when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
+// Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
+// One open popup per level of the popup hierarchy (NB: when assigning we reset the Window member of ImGuiPopupRef to NULL)
+void ImGui::OpenPopupEx(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* parent_window = g.CurrentWindow;
+    int current_stack_size = g.CurrentPopupStack.Size;
+    ImGuiPopupRef popup_ref; // Tagged as new ref as Window will be set back to NULL if we write this into OpenPopupStack.
+    popup_ref.PopupId = id;
+    popup_ref.Window = NULL;
+    popup_ref.ParentWindow = parent_window;
+    popup_ref.OpenFrameCount = g.FrameCount;
+    popup_ref.OpenParentId = parent_window->IDStack.back();
+    popup_ref.OpenMousePos = g.IO.MousePos;
+    popup_ref.OpenPopupPos = NavCalcPreferredRefPos();
+
+    //printf("[%05d] OpenPopupEx(0x%08X)\n", g.FrameCount, id);
+    if (g.OpenPopupStack.Size < current_stack_size + 1)
+    {
+        g.OpenPopupStack.push_back(popup_ref);
+    }
+    else
+    {
+        // Gently handle the user mistakenly calling OpenPopup() every frame. It is a programming mistake! However, if we were to run the regular code path, the ui
+        // would become completely unusable because the popup will always be in hidden-while-calculating-size state _while_ claiming focus. Which would be a very confusing
+        // situation for the programmer. Instead, we silently allow the popup to proceed, it will keep reappearing and the programming error will be more obvious to understand.
+        if (g.OpenPopupStack[current_stack_size].PopupId == id && g.OpenPopupStack[current_stack_size].OpenFrameCount == g.FrameCount - 1)
+        {
+            g.OpenPopupStack[current_stack_size].OpenFrameCount = popup_ref.OpenFrameCount;
+        }
+        else
+        {
+            // Close child popups if any, then flag popup for open/reopen
+            g.OpenPopupStack.resize(current_stack_size + 1);
+            g.OpenPopupStack[current_stack_size] = popup_ref;
+        }
+
+        // When reopening a popup we first refocus its parent, otherwise if its parent is itself a popup it would get closed by ClosePopupsOverWindow().
+        // This is equivalent to what ClosePopupToLevel() does.
+        //if (g.OpenPopupStack[current_stack_size].PopupId == id)
+        //    FocusWindow(parent_window);
+    }
+}
+
+bool ImGui::OpenPopupOnItemClick(const char* str_id, int mouse_button)
+{
+    ImGuiWindow* window = GImGui->CurrentWindow;
+    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+    {
+        ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
+        IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
+        OpenPopupEx(id);
+        return true;
+    }
+    return false;
+}
+
+void ImGui::ClosePopupsOverWindow(ImGuiWindow* ref_window)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.OpenPopupStack.empty())
+        return;
+
+    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
+    // Don't close our own child popup windows.
+    int n = 0;
+    if (ref_window)
+    {
+        for (n = 0; n < g.OpenPopupStack.Size; n++)
+        {
+            ImGuiPopupRef& popup = g.OpenPopupStack[n];
+            if (!popup.Window)
+                continue;
+            IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
+            if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
+                continue;
+
+            // Trim the stack if popups are not direct descendant of the reference window (which is often the NavWindow)
+            bool has_focus = false;
+            for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
+                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
+            if (!has_focus)
+                break;
+        }
+    }
+    if (n < g.OpenPopupStack.Size) // This test is not required but it allows to set a convenient breakpoint on the block below
+        ClosePopupToLevel(n);
+}
+
+void ImGui::ClosePopupToLevel(int remaining)
+{
+    IM_ASSERT(remaining >= 0);
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* focus_window = (remaining > 0) ? g.OpenPopupStack[remaining-1].Window : g.OpenPopupStack[0].ParentWindow;
+    if (g.NavLayer == 0)
+        focus_window = NavRestoreLastChildNavWindow(focus_window);
+    FocusWindow(focus_window);
+    focus_window->DC.NavHideHighlightOneFrame = true;
+    g.OpenPopupStack.resize(remaining);
+}
+
+void ImGui::ClosePopup(ImGuiID id)
+{
+    if (!IsPopupOpen(id))
+        return;
+    ImGuiContext& g = *GImGui;
+    ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+}
+
+// Close the popup we have begin-ed into.
+void ImGui::CloseCurrentPopup()
+{
+    ImGuiContext& g = *GImGui;
+    int popup_idx = g.CurrentPopupStack.Size - 1;
+    if (popup_idx < 0 || popup_idx >= g.OpenPopupStack.Size || g.CurrentPopupStack[popup_idx].PopupId != g.OpenPopupStack[popup_idx].PopupId)
+        return;
+    while (popup_idx > 0 && g.OpenPopupStack[popup_idx].Window && (g.OpenPopupStack[popup_idx].Window->Flags & ImGuiWindowFlags_ChildMenu))
+        popup_idx--;
+    ClosePopupToLevel(popup_idx);
+}
+
+bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (!IsPopupOpen(id))
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+
+    char name[20];
+    if (extra_flags & ImGuiWindowFlags_ChildMenu)
+        ImFormatString(name, IM_ARRAYSIZE(name), "##Menu_%02d", g.CurrentPopupStack.Size);    // Recycle windows based on depth
+    else
+        ImFormatString(name, IM_ARRAYSIZE(name), "##Popup_%08x", id); // Not recycling, so we can close/open during the same frame
+
+    bool is_open = Begin(name, NULL, extra_flags | ImGuiWindowFlags_Popup);
+    if (!is_open) // NB: Begin can return false when the popup is completely clipped (e.g. zero size display)
+        EndPopup();
+
+    return is_open;
+}
+
+bool ImGui::BeginPopup(const char* str_id, ImGuiWindowFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.OpenPopupStack.Size <= g.CurrentPopupStack.Size) // Early out for performance
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+    return BeginPopupEx(g.CurrentWindow->GetID(str_id), flags|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    const ImGuiID id = window->GetID(name);
+    if (!IsPopupOpen(id))
+    {
+        g.NextWindowData.Clear(); // We behave like Begin() and need to consume those values
+        return false;
+    }
+
+    // Center modal windows by default
+    // FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
+    if (g.NextWindowData.PosCond == 0)
+        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
+
+    bool is_open = Begin(name, p_open, flags | ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings);
+    if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
+    {
+        EndPopup();
+        if (is_open)
+            ClosePopup(id);
+        return false;
+    }
+    return is_open;
+}
+
+void ImGui::EndPopup()
+{
+    ImGuiContext& g = *GImGui; (void)g;
+    IM_ASSERT(g.CurrentWindow->Flags & ImGuiWindowFlags_Popup);  // Mismatched BeginPopup()/EndPopup() calls
+    IM_ASSERT(g.CurrentPopupStack.Size > 0);
+
+    // Make all menus and popups wrap around for now, may need to expose that policy.
+    NavMoveRequestTryWrapping(g.CurrentWindow, ImGuiNavMoveFlags_LoopY);
+
+    End();
+}
+
+// This is a helper to handle the simplest case of associating one named popup to one given widget.
+// You may want to handle this on user side if you have specific needs (e.g. tweaking IsItemHovered() parameters).
+// You can pass a NULL str_id to use the identifier of the last item.
+bool ImGui::BeginPopupContextItem(const char* str_id, int mouse_button)
+{
+    ImGuiWindow* window = GImGui->CurrentWindow;
+    ImGuiID id = str_id ? window->GetID(str_id) : window->DC.LastItemId; // If user hasn't passed an ID, we can use the LastItemID. Using LastItemID as a Popup ID won't conflict!
+    IM_ASSERT(id != 0);                                                  // You cannot pass a NULL str_id if the last item has no identifier (e.g. a Text() item)
+    if (IsMouseReleased(mouse_button) && IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+        OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupContextWindow(const char* str_id, int mouse_button, bool also_over_items)
+{
+    if (!str_id)
+        str_id = "window_context";
+    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
+    if (IsMouseReleased(mouse_button) && IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup))
+        if (also_over_items || !IsAnyItemHovered())
+            OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+bool ImGui::BeginPopupContextVoid(const char* str_id, int mouse_button)
+{
+    if (!str_id)
+        str_id = "void_context";
+    ImGuiID id = GImGui->CurrentWindow->GetID(str_id);
+    if (IsMouseReleased(mouse_button) && !IsWindowHovered(ImGuiHoveredFlags_AnyWindow))
+        OpenPopupEx(id);
+    return BeginPopupEx(id, ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoSavedSettings);
+}
+
+ImRect ImGui::GetWindowAllowedExtentRect(ImGuiWindow*)
+{
+    ImVec2 padding = GImGui->Style.DisplaySafeAreaPadding;
+    ImRect r_screen = GetViewportRect();
+    r_screen.Expand(ImVec2((r_screen.GetWidth() > padding.x * 2) ? -padding.x : 0.0f, (r_screen.GetHeight() > padding.y * 2) ? -padding.y : 0.0f));
+    return r_screen;
+}
+
+// r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
+// r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
+ImVec2 ImGui::FindBestWindowPosForPopupEx(const ImVec2& ref_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_outer, const ImRect& r_avoid, ImGuiPopupPositionPolicy policy)
+{
+    ImVec2 base_pos_clamped = ImClamp(ref_pos, r_outer.Min, r_outer.Max - size);
+    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
+    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
+
+    // Combo Box policy (we want a connecting edge)
+    if (policy == ImGuiPopupPositionPolicy_ComboBox)
+    {
+        const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Down, ImGuiDir_Right, ImGuiDir_Left, ImGuiDir_Up };
+        for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
+        {
+            const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+            if (n != -1 && dir == *last_dir) // Already tried this direction?
+                continue;
+            ImVec2 pos;
+            if (dir == ImGuiDir_Down)  pos = ImVec2(r_avoid.Min.x, r_avoid.Max.y);          // Below, Toward Right (default)
+            if (dir == ImGuiDir_Right) pos = ImVec2(r_avoid.Min.x, r_avoid.Min.y - size.y); // Above, Toward Right
+            if (dir == ImGuiDir_Left)  pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Max.y); // Below, Toward Left
+            if (dir == ImGuiDir_Up)    pos = ImVec2(r_avoid.Max.x - size.x, r_avoid.Min.y - size.y); // Above, Toward Left
+            if (!r_outer.Contains(ImRect(pos, pos + size)))
+                continue;
+            *last_dir = dir;
+            return pos;
+        }
+    }
+
+    // Default popup policy
+    const ImGuiDir dir_prefered_order[ImGuiDir_COUNT] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
+    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_COUNT; n++)
+    {
+        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+        if (n != -1 && dir == *last_dir) // Already tried this direction?
+            continue;
+        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
+        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
+        if (avail_w < size.x || avail_h < size.y)
+            continue;
+        ImVec2 pos;
+        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
+        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
+        *last_dir = dir;
+        return pos;
+    }
+
+    // Fallback, try to keep within display
+    *last_dir = ImGuiDir_None;
+    ImVec2 pos = ref_pos;
+    pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
+    pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
+    return pos;
+}
+
+ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+
+    ImRect r_outer = GetWindowAllowedExtentRect(window);
+    if (window->Flags & ImGuiWindowFlags_ChildMenu)
+    {
+        // Child menus typically request _any_ position within the parent menu item, and then our FindBestWindowPosForPopup() function will move the new menu outside the parent bounds.
+        // This is how we end up with child menus appearing (most-commonly) on the right of the parent menu.
+        IM_ASSERT(g.CurrentWindow == window);
+        ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.Size - 2];
+        float horizontal_overlap = g.Style.ItemSpacing.x;       // We want some overlap to convey the relative depth of each menu (currently the amount of overlap is hard-coded to style.ItemSpacing.x).
+        ImRect r_avoid;
+        if (parent_window->DC.MenuBarAppending)
+            r_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
+        else
+            r_avoid = ImRect(parent_window->Pos.x + horizontal_overlap, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - horizontal_overlap - parent_window->ScrollbarSizes.x, FLT_MAX);
+        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+    }
+    if (window->Flags & ImGuiWindowFlags_Popup)
+    {
+        ImRect r_avoid = ImRect(window->Pos.x - 1, window->Pos.y - 1, window->Pos.x + 1, window->Pos.y + 1);
+        return FindBestWindowPosForPopupEx(window->Pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+    }
+    if (window->Flags & ImGuiWindowFlags_Tooltip)
+    {
+        // Position tooltip (always follows mouse)
+        float sc = g.Style.MouseCursorScale;
+        ImVec2 ref_pos = NavCalcPreferredRefPos();
+        ImRect r_avoid;
+        if (!g.NavDisableHighlight && g.NavDisableMouseHover && !(g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos))
+            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 16, ref_pos.y + 8);
+        else
+            r_avoid = ImRect(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24 * sc, ref_pos.y + 24 * sc); // FIXME: Hard-coded based on mouse cursor shape expectation. Exact dimension not very important.
+        ImVec2 pos = FindBestWindowPosForPopupEx(ref_pos, window->Size, &window->AutoPosLastDirection, r_outer, r_avoid);
+        if (window->AutoPosLastDirection == ImGuiDir_None)
+            pos = ref_pos + ImVec2(2, 2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
+        return pos;
+    }
+    IM_ASSERT(0);
+    return window->Pos;
+}
+
+//-----------------------------------------------------------------------------
+// NAVIGATION
+//-----------------------------------------------------------------------------
+
+static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
+{
+    if (ImFabs(dx) > ImFabs(dy))
+        return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
+    return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
+}
+
+static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
+{
+    if (a1 < b0)
+        return a1 - b0;
+    if (b1 < a0)
+        return a0 - b1;
+    return 0.0f;
+}
+
+static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
+{
+    if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
+    {
+        r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
+        r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
+    }
+    else
+    {
+        r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
+        r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
+    }
+}
+
+// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
+static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    if (g.NavLayer != window->DC.NavLayerCurrent)
+        return false;
+
+    const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
+    g.NavScoringCount++;
+
+    // When entering through a NavFlattened border, we consider child window items as fully clipped for scoring
+    if (window->ParentWindow == g.NavWindow)
+    {
+        IM_ASSERT((window->Flags | g.NavWindow->Flags) & ImGuiWindowFlags_NavFlattened);
+        if (!window->ClipRect.Contains(cand))
+            return false;
+        cand.ClipWithFull(window->ClipRect); // This allows the scored item to not overlap other candidates in the parent window
+    }
+
+    // We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
+    // For example, this ensure that items in one column are not reached when moving vertically from items in another column.
+    NavClampRectToVisibleAreaForMoveDir(g.NavMoveClipDir, cand, window->ClipRect);
+
+    // Compute distance between boxes
+    // FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
+    float dbx = NavScoreItemDistInterval(cand.Min.x, cand.Max.x, curr.Min.x, curr.Max.x);
+    float dby = NavScoreItemDistInterval(ImLerp(cand.Min.y, cand.Max.y, 0.2f), ImLerp(cand.Min.y, cand.Max.y, 0.8f), ImLerp(curr.Min.y, curr.Max.y, 0.2f), ImLerp(curr.Min.y, curr.Max.y, 0.8f)); // Scale down on Y to keep using box-distance for vertically touching items
+    if (dby != 0.0f && dbx != 0.0f)
+       dbx = (dbx/1000.0f) + ((dbx > 0.0f) ? +1.0f : -1.0f);
+    float dist_box = ImFabs(dbx) + ImFabs(dby);
+
+    // Compute distance between centers (this is off by a factor of 2, but we only compare center distances with each other so it doesn't matter)
+    float dcx = (cand.Min.x + cand.Max.x) - (curr.Min.x + curr.Max.x);
+    float dcy = (cand.Min.y + cand.Max.y) - (curr.Min.y + curr.Max.y);
+    float dist_center = ImFabs(dcx) + ImFabs(dcy); // L1 metric (need this for our connectedness guarantee)
+
+    // Determine which quadrant of 'curr' our candidate item 'cand' lies in based on distance
+    ImGuiDir quadrant;
+    float dax = 0.0f, day = 0.0f, dist_axial = 0.0f;
+    if (dbx != 0.0f || dby != 0.0f)
+    {
+        // For non-overlapping boxes, use distance between boxes
+        dax = dbx;
+        day = dby;
+        dist_axial = dist_box;
+        quadrant = NavScoreItemGetQuadrant(dbx, dby);
+    }
+    else if (dcx != 0.0f || dcy != 0.0f)
+    {
+        // For overlapping boxes with different centers, use distance between centers
+        dax = dcx;
+        day = dcy;
+        dist_axial = dist_center;
+        quadrant = NavScoreItemGetQuadrant(dcx, dcy);
+    }
+    else
+    {
+        // Degenerate case: two overlapping buttons with same center, break ties arbitrarily (note that LastItemId here is really the _previous_ item order, but it doesn't matter)
+        quadrant = (window->DC.LastItemId < g.NavId) ? ImGuiDir_Left : ImGuiDir_Right;
+    }
+
+#if IMGUI_DEBUG_NAV_SCORING
+    char buf[128];
+    if (ImGui::IsMouseHoveringRect(cand.Min, cand.Max))
+    {
+        ImFormatString(buf, IM_ARRAYSIZE(buf), "dbox (%.2f,%.2f->%.4f)\ndcen (%.2f,%.2f->%.4f)\nd (%.2f,%.2f->%.4f)\nnav %c, quadrant %c", dbx, dby, dist_box, dcx, dcy, dist_center, dax, day, dist_axial, "WENS"[g.NavMoveDir], "WENS"[quadrant]);
+        ImDrawList* draw_list = ImGui::GetOverlayDrawList();
+        draw_list->AddRect(curr.Min, curr.Max, IM_COL32(255,200,0,100));
+        draw_list->AddRect(cand.Min, cand.Max, IM_COL32(255,255,0,200));
+        draw_list->AddRectFilled(cand.Max-ImVec2(4,4), cand.Max+ImGui::CalcTextSize(buf)+ImVec2(4,4), IM_COL32(40,0,0,150));
+        draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Max, ~0U, buf);
+    }
+    else if (g.IO.KeyCtrl) // Hold to preview score in matching quadrant. Press C to rotate.
+    {
+        if (IsKeyPressedMap(ImGuiKey_C)) { g.NavMoveDirLast = (ImGuiDir)((g.NavMoveDirLast + 1) & 3); g.IO.KeysDownDuration[g.IO.KeyMap[ImGuiKey_C]] = 0.01f; }
+        if (quadrant == g.NavMoveDir)
+        {
+            ImFormatString(buf, IM_ARRAYSIZE(buf), "%.0f/%.0f", dist_box, dist_center);
+            ImDrawList* draw_list = ImGui::GetOverlayDrawList();
+            draw_list->AddRectFilled(cand.Min, cand.Max, IM_COL32(255, 0, 0, 200));
+            draw_list->AddText(g.IO.FontDefault, 13.0f, cand.Min, IM_COL32(255, 255, 255, 255), buf);
+        }
+    }
+ #endif
+
+    // Is it in the quadrant we're interesting in moving to?
+    bool new_best = false;
+    if (quadrant == g.NavMoveDir)
+    {
+        // Does it beat the current best candidate?
+        if (dist_box < result->DistBox)
+        {
+            result->DistBox = dist_box;
+            result->DistCenter = dist_center;
+            return true;
+        }
+        if (dist_box == result->DistBox)
+        {
+            // Try using distance between center points to break ties
+            if (dist_center < result->DistCenter)
+            {
+                result->DistCenter = dist_center;
+                new_best = true;
+            }
+            else if (dist_center == result->DistCenter)
+            {
+                // Still tied! we need to be extra-careful to make sure everything gets linked properly. We consistently break ties by symbolically moving "later" items
+                // (with higher index) to the right/downwards by an infinitesimal amount since we the current "best" button already (so it must have a lower index),
+                // this is fairly easy. This rule ensures that all buttons with dx==dy==0 will end up being linked in order of appearance along the x axis.
+                if (((g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down) ? dby : dbx) < 0.0f) // moving bj to the right/down decreases distance
+                    new_best = true;
+            }
+        }
+    }
+
+    // Axial check: if 'curr' has no link at all in some direction and 'cand' lies roughly in that direction, add a tentative link. This will only be kept if no "real" matches
+    // are found, so it only augments the graph produced by the above method using extra links. (important, since it doesn't guarantee strong connectedness)
+    // This is just to avoid buttons having no links in a particular direction when there's a suitable neighbor. you get good graphs without this too.
+    // 2017/09/29: FIXME: This now currently only enabled inside menu bars, ideally we'd disable it everywhere. Menus in particular need to catch failure. For general navigation it feels awkward.
+    // Disabling it may lead to disconnected graphs when nodes are very spaced out on different axis. Perhaps consider offering this as an option?
+    if (result->DistBox == FLT_MAX && dist_axial < result->DistAxial)  // Check axial match
+        if (g.NavLayer == 1 && !(g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
+            if ((g.NavMoveDir == ImGuiDir_Left && dax < 0.0f) || (g.NavMoveDir == ImGuiDir_Right && dax > 0.0f) || (g.NavMoveDir == ImGuiDir_Up && day < 0.0f) || (g.NavMoveDir == ImGuiDir_Down && day > 0.0f))
+            {
+                result->DistAxial = dist_axial;
+                new_best = true;
+            }
+
+    return new_best;
+}
+
+// We get there when either NavId == id, or when g.NavAnyRequest is set (which is updated by NavUpdateAnyRequestFlag above)
+static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, const ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    //if (!g.IO.NavActive)  // [2017/10/06] Removed this possibly redundant test but I am not sure of all the side-effects yet. Some of the feature here will need to work regardless of using a _NoNavInputs flag.
+    //    return;
+
+    const ImGuiItemFlags item_flags = window->DC.ItemFlags;
+    const ImRect nav_bb_rel(nav_bb.Min - window->Pos, nav_bb.Max - window->Pos);
+
+    // Process Init Request
+    if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
+    {
+        // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
+        {
+            g.NavInitResultId = id;
+            g.NavInitResultRectRel = nav_bb_rel;
+        }
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
+        {
+            g.NavInitRequest = false; // Found a match, clear request
+            NavUpdateAnyRequestFlag();
+        }
+    }
+
+    // Process Move Request (scoring for navigation)
+    // FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
+    if ((g.NavId != id || (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AllowCurrentNavId)) && !(item_flags & ImGuiItemFlags_NoNav))
+    {
+        ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
+#if IMGUI_DEBUG_NAV_SCORING
+        // [DEBUG] Score all items in NavWindow at all times
+        if (!g.NavMoveRequest)
+            g.NavMoveDir = g.NavMoveDirLast;
+        bool new_best = NavScoreItem(result, nav_bb) && g.NavMoveRequest;
+#else
+        bool new_best = g.NavMoveRequest && NavScoreItem(result, nav_bb);
+#endif
+        if (new_best)
+        {
+            result->ID = id;
+            result->Window = window;
+            result->RectRel = nav_bb_rel;
+        }
+
+        const float VISIBLE_RATIO = 0.70f;
+        if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
+            if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
+                if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
+                {
+                    result = &g.NavMoveResultLocalVisibleSet;
+                    result->ID = id;
+                    result->Window = window;
+                    result->RectRel = nav_bb_rel;
+                }
+    }
+
+    // Update window-relative bounding box of navigated item
+    if (g.NavId == id)
+    {
+        g.NavWindow = window;                                           // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
+        g.NavLayer = window->DC.NavLayerCurrent;
+        g.NavIdIsAlive = true;
+        g.NavIdTabCounter = window->FocusIdxTabCounter;
+        window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel;    // Store item bounding box (relative to window position)
+    }
+}
+
+bool ImGui::NavMoveRequestButNoResultYet()
+{
+    ImGuiContext& g = *GImGui;
+    return g.NavMoveRequest && g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0;
+}
+
+void ImGui::NavMoveRequestCancel()
+{
+    ImGuiContext& g = *GImGui;
+    g.NavMoveRequest = false;
+    NavUpdateAnyRequestFlag();
+}
+
+void ImGui::NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, const ImRect& bb_rel, ImGuiNavMoveFlags move_flags)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_None);
+    ImGui::NavMoveRequestCancel();
+    g.NavMoveDir = move_dir;
+    g.NavMoveClipDir = clip_dir;
+    g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
+    g.NavMoveRequestFlags = move_flags;
+    g.NavWindow->NavRectRel[g.NavLayer] = bb_rel;
+}
+
+void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavWindow != window || !NavMoveRequestButNoResultYet() || g.NavMoveRequestForward != ImGuiNavForward_None || g.NavLayer != 0)
+        return;
+    IM_ASSERT(move_flags != 0); // No points calling this with no wrapping
+    ImRect bb_rel = window->NavRectRel[0];
+
+    ImGuiDir clip_dir = g.NavMoveDir;
+    if (g.NavMoveDir == ImGuiDir_Left && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
+    {
+        bb_rel.Min.x = bb_rel.Max.x = ImMax(window->SizeFull.x, window->SizeContents.x) - window->Scroll.x;
+        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(-bb_rel.GetHeight()); clip_dir = ImGuiDir_Up; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Right && (move_flags & (ImGuiNavMoveFlags_WrapX | ImGuiNavMoveFlags_LoopX)))
+    {
+        bb_rel.Min.x = bb_rel.Max.x = -window->Scroll.x;
+        if (move_flags & ImGuiNavMoveFlags_WrapX) { bb_rel.TranslateY(+bb_rel.GetHeight()); clip_dir = ImGuiDir_Down; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Up && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
+    {
+        bb_rel.Min.y = bb_rel.Max.y = ImMax(window->SizeFull.y, window->SizeContents.y) - window->Scroll.y;
+        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(-bb_rel.GetWidth()); clip_dir = ImGuiDir_Left; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+    if (g.NavMoveDir == ImGuiDir_Down && (move_flags & (ImGuiNavMoveFlags_WrapY | ImGuiNavMoveFlags_LoopY)))
+    {
+        bb_rel.Min.y = bb_rel.Max.y = -window->Scroll.y;
+        if (move_flags & ImGuiNavMoveFlags_WrapY) { bb_rel.TranslateX(+bb_rel.GetWidth()); clip_dir = ImGuiDir_Right; }
+        NavMoveRequestForward(g.NavMoveDir, clip_dir, bb_rel, move_flags);
+    }
+}
+
+static void ImGui::NavSaveLastChildNavWindow(ImGuiWindow* nav_window)
+{
+    ImGuiWindow* parent_window = nav_window;
+    while (parent_window && (parent_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (parent_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
+        parent_window = parent_window->ParentWindow;
+    if (parent_window && parent_window != nav_window)
+        parent_window->NavLastChildNavWindow = nav_window;
+}
+
+// Call when we are expected to land on Layer 0 after FocusWindow()
+static ImGuiWindow* ImGui::NavRestoreLastChildNavWindow(ImGuiWindow* window)
+{
+    return window->NavLastChildNavWindow ? window->NavLastChildNavWindow : window;
+}
+
+static void NavRestoreLayer(int layer)
+{
+    ImGuiContext& g = *GImGui;
+    g.NavLayer = layer;
+    if (layer == 0)
+        g.NavWindow = ImGui::NavRestoreLastChildNavWindow(g.NavWindow);
+    if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
+        ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
+    else
+        ImGui::NavInitWindow(g.NavWindow, true);
+}
+
+static inline void ImGui::NavUpdateAnyRequestFlag()
+{
+    ImGuiContext& g = *GImGui;
+    g.NavAnyRequest = g.NavMoveRequest || g.NavInitRequest || (IMGUI_DEBUG_NAV_SCORING && g.NavWindow != NULL);
+    if (g.NavAnyRequest)
+        IM_ASSERT(g.NavWindow != NULL);
+}
+
+// This needs to be called before we submit any widget (aka in or before Begin)
+void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(window == g.NavWindow);
+    bool init_for_nav = false;
+    if (!(window->Flags & ImGuiWindowFlags_NoNavInputs))
+        if (!(window->Flags & ImGuiWindowFlags_ChildWindow) || (window->Flags & ImGuiWindowFlags_Popup) || (window->NavLastIds[0] == 0) || force_reinit)
+            init_for_nav = true;
+    if (init_for_nav)
+    {
+        SetNavID(0, g.NavLayer);
+        g.NavInitRequest = true;
+        g.NavInitRequestFromMove = false;
+        g.NavInitResultId = 0;
+        g.NavInitResultRectRel = ImRect();
+        NavUpdateAnyRequestFlag();
+    }
+    else
+    {
+        g.NavId = window->NavLastIds[0];
+    }
+}
+
+static ImVec2 ImGui::NavCalcPreferredRefPos()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow)
+        return ImFloor(g.IO.MousePos);
+
+    // When navigation is active and mouse is disabled, decide on an arbitrary position around the bottom left of the currently navigated item
+    const ImRect& rect_rel = g.NavWindow->NavRectRel[g.NavLayer];
+    ImVec2 pos = g.NavWindow->Pos + ImVec2(rect_rel.Min.x + ImMin(g.Style.FramePadding.x*4, rect_rel.GetWidth()), rect_rel.Max.y - ImMin(g.Style.FramePadding.y, rect_rel.GetHeight()));
+    ImRect visible_rect = GetViewportRect();
+    return ImFloor(ImClamp(pos, visible_rect.Min, visible_rect.Max));   // ImFloor() is important because non-integer mouse position application in back-end might be lossy and result in undesirable non-zero delta.
+}
+
+float ImGui::GetNavInputAmount(ImGuiNavInput n, ImGuiInputReadMode mode)
+{
+    ImGuiContext& g = *GImGui;
+    if (mode == ImGuiInputReadMode_Down)
+        return g.IO.NavInputs[n];                         // Instant, read analog input (0.0f..1.0f, as provided by user)
+
+    const float t = g.IO.NavInputsDownDuration[n];
+    if (t < 0.0f && mode == ImGuiInputReadMode_Released)  // Return 1.0f when just released, no repeat, ignore analog input.
+        return (g.IO.NavInputsDownDurationPrev[n] >= 0.0f ? 1.0f : 0.0f);
+    if (t < 0.0f)
+        return 0.0f;
+    if (mode == ImGuiInputReadMode_Pressed)               // Return 1.0f when just pressed, no repeat, ignore analog input.
+        return (t == 0.0f) ? 1.0f : 0.0f;
+    if (mode == ImGuiInputReadMode_Repeat)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
+    if (mode == ImGuiInputReadMode_RepeatSlow)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 1.00f, g.IO.KeyRepeatRate * 2.00f);
+    if (mode == ImGuiInputReadMode_RepeatFast)
+        return (float)CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.30f);
+    return 0.0f;
+}
+
+ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor, float fast_factor)
+{
+    ImVec2 delta(0.0f, 0.0f);
+    if (dir_sources & ImGuiNavDirSourceFlags_Keyboard)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_KeyRight_, mode)   - GetNavInputAmount(ImGuiNavInput_KeyLeft_,   mode), GetNavInputAmount(ImGuiNavInput_KeyDown_,   mode) - GetNavInputAmount(ImGuiNavInput_KeyUp_,   mode));
+    if (dir_sources & ImGuiNavDirSourceFlags_PadDPad)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_DpadRight, mode)   - GetNavInputAmount(ImGuiNavInput_DpadLeft,   mode), GetNavInputAmount(ImGuiNavInput_DpadDown,   mode) - GetNavInputAmount(ImGuiNavInput_DpadUp,   mode));
+    if (dir_sources & ImGuiNavDirSourceFlags_PadLStick)
+        delta += ImVec2(GetNavInputAmount(ImGuiNavInput_LStickRight, mode) - GetNavInputAmount(ImGuiNavInput_LStickLeft, mode), GetNavInputAmount(ImGuiNavInput_LStickDown, mode) - GetNavInputAmount(ImGuiNavInput_LStickUp, mode));
+    if (slow_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakSlow))
+        delta *= slow_factor;
+    if (fast_factor != 0.0f && IsNavInputDown(ImGuiNavInput_TweakFast))
+        delta *= fast_factor;
+    return delta;
+}
+
+// Scroll to keep newly navigated item fully into view
+// NB: We modify rect_rel by the amount we scrolled for, so it is immediately updated.
+static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item_rect)
+{
+    ImRect window_rect(window->InnerMainRect.Min - ImVec2(1, 1), window->InnerMainRect.Max + ImVec2(1, 1));
+    //g.OverlayDrawList.AddRect(window_rect.Min, window_rect.Max, IM_COL32_WHITE); // [DEBUG]
+    if (window_rect.Contains(item_rect))
+        return;
+
+    ImGuiContext& g = *GImGui;
+    if (window->ScrollbarX && item_rect.Min.x < window_rect.Min.x)
+    {
+        window->ScrollTarget.x = item_rect.Min.x - window->Pos.x + window->Scroll.x - g.Style.ItemSpacing.x;
+        window->ScrollTargetCenterRatio.x = 0.0f;
+    }
+    else if (window->ScrollbarX && item_rect.Max.x >= window_rect.Max.x)
+    {
+        window->ScrollTarget.x = item_rect.Max.x - window->Pos.x + window->Scroll.x + g.Style.ItemSpacing.x;
+        window->ScrollTargetCenterRatio.x = 1.0f;
+    }
+    if (item_rect.Min.y < window_rect.Min.y)
+    {
+        window->ScrollTarget.y = item_rect.Min.y - window->Pos.y + window->Scroll.y - g.Style.ItemSpacing.y;
+        window->ScrollTargetCenterRatio.y = 0.0f;
+    }
+    else if (item_rect.Max.y >= window_rect.Max.y)
+    {
+        window->ScrollTarget.y = item_rect.Max.y - window->Pos.y + window->Scroll.y + g.Style.ItemSpacing.y;
+        window->ScrollTargetCenterRatio.y = 1.0f;
+    }
+}
+
+static void ImGui::NavUpdate()
+{
+    ImGuiContext& g = *GImGui;
+    g.IO.WantSetMousePos = false;
+#if 0
+    if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
+#endif
+
+    // Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
+    bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
+    bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
+    if (nav_gamepad_active)
+        if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
+            g.NavInputSource = ImGuiInputSource_NavGamepad;
+
+    // Update Keyboard->Nav inputs mapping
+    if (nav_keyboard_active)
+    {
+        #define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
+        NAV_MAP_KEY(ImGuiKey_Space,     ImGuiNavInput_Activate );
+        NAV_MAP_KEY(ImGuiKey_Enter,     ImGuiNavInput_Input    );
+        NAV_MAP_KEY(ImGuiKey_Escape,    ImGuiNavInput_Cancel   );
+        NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
+        NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
+        NAV_MAP_KEY(ImGuiKey_UpArrow,   ImGuiNavInput_KeyUp_   );
+        NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
+        if (g.IO.KeyCtrl)   g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
+        if (g.IO.KeyShift)  g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
+        if (g.IO.KeyAlt)    g.IO.NavInputs[ImGuiNavInput_KeyMenu_]  = 1.0f;
+        #undef NAV_MAP_KEY
+    }
+    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
+    for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
+        g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
+
+    // Process navigation init request (select first/default focus)
+    if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
+    {
+        // Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
+        IM_ASSERT(g.NavWindow);
+        if (g.NavInitRequestFromMove)
+            SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
+        else
+            SetNavID(g.NavInitResultId, g.NavLayer);
+        g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
+    }
+    g.NavInitRequest = false;
+    g.NavInitRequestFromMove = false;
+    g.NavInitResultId = 0;
+    g.NavJustMovedToId = 0;
+
+    // Process navigation move request
+    if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
+        NavUpdateMoveResult();
+
+    // When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
+    if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
+    {
+        IM_ASSERT(g.NavMoveRequest);
+        if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
+            g.NavDisableHighlight = false;
+        g.NavMoveRequestForward = ImGuiNavForward_None;
+    }
+
+    // Apply application mouse position movement, after we had a chance to process move request result.
+    if (g.NavMousePosDirty && g.NavIdIsAlive)
+    {
+        // Set mouse position given our knowledge of the navigated item position from last frame
+        if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
+        {
+            if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
+            {
+                g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
+                g.IO.WantSetMousePos = true;
+            }
+        }
+        g.NavMousePosDirty = false;
+    }
+    g.NavIdIsAlive = false;
+    g.NavJustTabbedId = 0;
+    IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
+
+    // Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
+    if (g.NavWindow)
+        NavSaveLastChildNavWindow(g.NavWindow);
+    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
+        g.NavWindow->NavLastChildNavWindow = NULL;
+
+    // Update CTRL+TAB and Windowing features (hold Square to move/resize/etc.)
+    NavUpdateWindowing();
+
+    // Set output flags for user application
+    g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
+    g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
+
+    // Process NavCancel input (to close a popup, get back to parent, clear focus)
+    if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
+    {
+        if (g.ActiveId != 0)
+        {
+            ClearActiveID();
+        }
+        else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
+        {
+            // Exit child window
+            ImGuiWindow* child_window = g.NavWindow;
+            ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
+            IM_ASSERT(child_window->ChildId != 0);
+            FocusWindow(parent_window);
+            SetNavID(child_window->ChildId, 0);
+            g.NavIdIsAlive = false;
+            if (g.NavDisableMouseHover)
+                g.NavMousePosDirty = true;
+        }
+        else if (g.OpenPopupStack.Size > 0)
+        {
+            // Close open popup/menu
+            if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
+                ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+        }
+        else if (g.NavLayer != 0)
+        {
+            // Leave the "menu" layer
+            NavRestoreLayer(0);
+        }
+        else
+        {
+            // Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
+            if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
+                g.NavWindow->NavLastIds[0] = 0;
+            g.NavId = 0;
+        }
+    }
+
+    // Process manual activation request
+    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
+    if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+    {
+        bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
+        bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
+        if (g.ActiveId == 0 && activate_pressed)
+            g.NavActivateId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
+            g.NavActivateDownId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
+            g.NavActivatePressedId = g.NavId;
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
+            g.NavInputId = g.NavId;
+    }
+    if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+        g.NavDisableHighlight = true;
+    if (g.NavActivateId != 0)
+        IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
+    g.NavMoveRequest = false;
+
+    // Process programmatic activation request
+    if (g.NavNextActivateId != 0)
+        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
+    g.NavNextActivateId = 0;
+
+    // Initiate directional inputs request
+    const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
+    if (g.NavMoveRequestForward == ImGuiNavForward_None)
+    {
+        g.NavMoveDir = ImGuiDir_None;
+        g.NavMoveRequestFlags = 0;
+        if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
+        {
+            if ((allowed_dir_flags & (1<<ImGuiDir_Left))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Up))    && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp,   ImGuiNavInput_KeyUp_,   ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
+            if ((allowed_dir_flags & (1<<ImGuiDir_Down))  && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
+        }
+        g.NavMoveClipDir = g.NavMoveDir;
+    }
+    else
+    {
+        // Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
+        // (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
+        IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
+        IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
+        g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
+    }
+
+    // Update PageUp/PageDown scroll
+    float nav_scoring_rect_offset_y = 0.0f;
+    if (nav_keyboard_active)
+        nav_scoring_rect_offset_y = NavUpdatePageUpPageDown(allowed_dir_flags);
+
+    // If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
+    if (g.NavMoveDir != ImGuiDir_None)
+    {
+        g.NavMoveRequest = true;
+        g.NavMoveDirLast = g.NavMoveDir;
+    }
+    if (g.NavMoveRequest && g.NavId == 0)
+    {
+        g.NavInitRequest = g.NavInitRequestFromMove = true;
+        g.NavInitResultId = 0;
+        g.NavDisableHighlight = false;
+    }
+    NavUpdateAnyRequestFlag();
+
+    // Scrolling
+    if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
+    {
+        // *Fallback* manual-scroll with Nav directional keys when window has no navigable item
+        ImGuiWindow* window = g.NavWindow;
+        const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
+        if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
+        {
+            if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
+                SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
+            if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
+                SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
+        }
+
+        // *Normal* Manual scroll with NavScrollXXX keys
+        // Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
+        ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
+        if (scroll_dir.x != 0.0f && window->ScrollbarX)
+        {
+            SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
+            g.NavMoveFromClampedRefRect = true;
+        }
+        if (scroll_dir.y != 0.0f)
+        {
+            SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
+            g.NavMoveFromClampedRefRect = true;
+        }
+    }
+
+    // Reset search results
+    g.NavMoveResultLocal.Clear();
+    g.NavMoveResultLocalVisibleSet.Clear();
+    g.NavMoveResultOther.Clear();
+
+    // When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
+    if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
+    {
+        ImGuiWindow* window = g.NavWindow;
+        ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
+        if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
+        {
+            float pad = window->CalcFontSize() * 0.5f;
+            window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
+            window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
+            g.NavId = 0;
+        }
+        g.NavMoveFromClampedRefRect = false;
+    }
+
+    // For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
+    ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
+    g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
+    g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
+    g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
+    g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
+    IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
+    //g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
+    g.NavScoringCount = 0;
+#if IMGUI_DEBUG_NAV_RECTS
+    if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
+    if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
+#endif
+}
+
+static void ImGui::NavUpdateMoveResult()
+{
+    // Select which result to use
+    ImGuiContext& g = *GImGui;
+    ImGuiNavMoveResult* result = (g.NavMoveResultLocal.ID != 0) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
+
+    // PageUp/PageDown behavior first jumps to the bottom/top mostly visible item, _otherwise_ use the result from the previous/next page.
+    if (g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet)
+        if (g.NavMoveResultLocalVisibleSet.ID != 0 && g.NavMoveResultLocalVisibleSet.ID != g.NavId)
+            result = &g.NavMoveResultLocalVisibleSet;
+
+    // Maybe entering a flattened child from the outside? In this case solve the tie using the regular scoring rules.
+    if (result != &g.NavMoveResultOther && g.NavMoveResultOther.ID != 0 && g.NavMoveResultOther.Window->ParentWindow == g.NavWindow)
+        if ((g.NavMoveResultOther.DistBox < result->DistBox) || (g.NavMoveResultOther.DistBox == result->DistBox && g.NavMoveResultOther.DistCenter < result->DistCenter))
+            result = &g.NavMoveResultOther;
+    IM_ASSERT(g.NavWindow && result->Window);
+
+    // Scroll to keep newly navigated item fully into view.
+    if (g.NavLayer == 0)
+    {
+        ImRect rect_abs = ImRect(result->RectRel.Min + result->Window->Pos, result->RectRel.Max + result->Window->Pos);
+        NavScrollToBringItemIntoView(result->Window, rect_abs);
+
+        // Estimate upcoming scroll so we can offset our result position so mouse position can be applied immediately after in NavUpdate()
+        ImVec2 next_scroll = CalcNextScrollFromScrollTargetAndClamp(result->Window, false);
+        ImVec2 delta_scroll = result->Window->Scroll - next_scroll;
+        result->RectRel.Translate(delta_scroll);
+
+        // Also scroll parent window to keep us into view if necessary (we could/should technically recurse back the whole the parent hierarchy).
+        if (result->Window->Flags & ImGuiWindowFlags_ChildWindow)
+            NavScrollToBringItemIntoView(result->Window->ParentWindow, ImRect(rect_abs.Min + delta_scroll, rect_abs.Max + delta_scroll));
+    }
+
+    // Apply result from previous frame navigation directional move request
+    ClearActiveID();
+    g.NavWindow = result->Window;
+    SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
+    g.NavJustMovedToId = result->ID;
+    g.NavMoveFromClampedRefRect = false;
+}
+
+static float ImGui::NavUpdatePageUpPageDown(int allowed_dir_flags)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.NavMoveDir == ImGuiDir_None && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget && g.NavLayer == 0)
+    {
+        ImGuiWindow* window = g.NavWindow;
+        bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && (allowed_dir_flags & (1 << ImGuiDir_Up));
+        bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && (allowed_dir_flags & (1 << ImGuiDir_Down));
+        if ((page_up_held && !page_down_held) || (page_down_held && !page_up_held))
+        {
+            if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
+            {
+                // Fallback manual-scroll when window has no navigable item
+                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
+                    SetWindowScrollY(window, window->Scroll.y - window->InnerClipRect.GetHeight());
+                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
+                    SetWindowScrollY(window, window->Scroll.y + window->InnerClipRect.GetHeight());
+            }
+            else
+            {
+                const ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
+                const float page_offset_y = ImMax(0.0f, window->InnerClipRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
+                float nav_scoring_rect_offset_y = 0.0f;
+                if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
+                {
+                    nav_scoring_rect_offset_y = -page_offset_y;
+                    g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
+                    g.NavMoveClipDir = ImGuiDir_Up;
+                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
+                }
+                else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
+                {
+                    nav_scoring_rect_offset_y = +page_offset_y;
+                    g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset, we intentionally request the opposite direction (so we can always land on the last item)
+                    g.NavMoveClipDir = ImGuiDir_Down;
+                    g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
+                }
+                return nav_scoring_rect_offset_y;
+            }
+        }
+    }
+    return 0.0f;
+}
+
+static int FindWindowIndex(ImGuiWindow* window) // FIXME-OPT O(N)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = g.Windows.Size-1; i >= 0; i--)
+        if (g.Windows[i] == window)
+            return i;
+    return -1;
+}
+
+static ImGuiWindow* FindWindowNavFocusable(int i_start, int i_stop, int dir) // FIXME-OPT O(N)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = i_start; i >= 0 && i < g.Windows.Size && i != i_stop; i += dir)
+        if (ImGui::IsWindowNavFocusable(g.Windows[i]))
+            return g.Windows[i];
+    return NULL;
+}
+
+static void NavUpdateWindowingHighlightWindow(int focus_change_dir)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavWindowingTarget);
+    if (g.NavWindowingTarget->Flags & ImGuiWindowFlags_Modal)
+        return;
+
+    const int i_current = FindWindowIndex(g.NavWindowingTarget);
+    ImGuiWindow* window_target = FindWindowNavFocusable(i_current + focus_change_dir, -INT_MAX, focus_change_dir);
+    if (!window_target)
+        window_target = FindWindowNavFocusable((focus_change_dir < 0) ? (g.Windows.Size - 1) : 0, i_current, focus_change_dir);
+    if (window_target) // Don't reset windowing target if there's a single window in the list
+        g.NavWindowingTarget = g.NavWindowingTargetAnim = window_target;
+    g.NavWindowingToggleLayer = false;
+}
+
+// Window management mode (hold to: change focus/move/resize, tap to: toggle menu layer)
+static void ImGui::NavUpdateWindowing()
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* apply_focus_window = NULL;
+    bool apply_toggle_layer = false;
+
+    ImGuiWindow* modal_window = GetFrontMostPopupModal();
+    if (modal_window != NULL)
+    {
+        g.NavWindowingTarget = NULL;
+        return;
+    }
+
+    // Fade out
+    if (g.NavWindowingTargetAnim && g.NavWindowingTarget == NULL)
+    {
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha - g.IO.DeltaTime * 10.0f, 0.0f);
+        if (g.DimBgRatio <= 0.0f && g.NavWindowingHighlightAlpha <= 0.0f)
+            g.NavWindowingTargetAnim = NULL;
+    }
+
+    // Start CTRL-TAB or Square+L/R window selection
+    bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
+    bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
+    if (start_windowing_with_gamepad || start_windowing_with_keyboard)
+        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.Windows.Size - 1, -INT_MAX, -1))
+        {
+            g.NavWindowingTarget = g.NavWindowingTargetAnim = window;
+            g.NavWindowingTimer = g.NavWindowingHighlightAlpha = 0.0f;
+            g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
+            g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
+        }
+
+    // Gamepad update
+    g.NavWindowingTimer += g.IO.DeltaTime;
+    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavGamepad)
+    {
+        // Highlight only appears after a brief time holding the button, so that a fast tap on PadMenu (to toggle NavLayer) doesn't add visual noise
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f));
+
+        // Select window to focus
+        const int focus_change_dir = (int)IsNavInputPressed(ImGuiNavInput_FocusPrev, ImGuiInputReadMode_RepeatSlow) - (int)IsNavInputPressed(ImGuiNavInput_FocusNext, ImGuiInputReadMode_RepeatSlow);
+        if (focus_change_dir != 0)
+        {
+            NavUpdateWindowingHighlightWindow(focus_change_dir);
+            g.NavWindowingHighlightAlpha = 1.0f;
+        }
+
+        // Single press toggles NavLayer, long press with L/R apply actual focus on release (until then the window was merely rendered front-most)
+        if (!IsNavInputDown(ImGuiNavInput_Menu))
+        {
+            g.NavWindowingToggleLayer &= (g.NavWindowingHighlightAlpha < 1.0f); // Once button was held long enough we don't consider it a tap-to-toggle-layer press anymore.
+            if (g.NavWindowingToggleLayer && g.NavWindow)
+                apply_toggle_layer = true;
+            else if (!g.NavWindowingToggleLayer)
+                apply_focus_window = g.NavWindowingTarget;
+            g.NavWindowingTarget = NULL;
+        }
+    }
+
+    // Keyboard: Focus
+    if (g.NavWindowingTarget && g.NavInputSource == ImGuiInputSource_NavKeyboard)
+    {
+        // Visuals only appears after a brief time after pressing TAB the first time, so that a fast CTRL+TAB doesn't add visual noise
+        g.NavWindowingHighlightAlpha = ImMax(g.NavWindowingHighlightAlpha, ImSaturate((g.NavWindowingTimer - NAV_WINDOWING_HIGHLIGHT_DELAY) / 0.05f)); // 1.0f
+        if (IsKeyPressedMap(ImGuiKey_Tab, true))
+            NavUpdateWindowingHighlightWindow(g.IO.KeyShift ? +1 : -1);
+        if (!g.IO.KeyCtrl)
+            apply_focus_window = g.NavWindowingTarget;
+    }
+
+    // Keyboard: Press and Release ALT to toggle menu layer
+    // FIXME: We lack an explicit IO variable for "is the imgui window focused", so compare mouse validity to detect the common case of back-end clearing releases all keys on ALT-TAB
+    if ((g.ActiveId == 0 || g.ActiveIdAllowOverlap) && IsNavInputPressed(ImGuiNavInput_KeyMenu_, ImGuiInputReadMode_Released))
+        if (IsMousePosValid(&g.IO.MousePos) == IsMousePosValid(&g.IO.MousePosPrev))
+            apply_toggle_layer = true;
+
+    // Move window
+    if (g.NavWindowingTarget && !(g.NavWindowingTarget->Flags & ImGuiWindowFlags_NoMove))
+    {
+        ImVec2 move_delta;
+        if (g.NavInputSource == ImGuiInputSource_NavKeyboard && !g.IO.KeyShift)
+            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard, ImGuiInputReadMode_Down);
+        if (g.NavInputSource == ImGuiInputSource_NavGamepad)
+            move_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down);
+        if (move_delta.x != 0.0f || move_delta.y != 0.0f)
+        {
+            const float NAV_MOVE_SPEED = 800.0f;
+            const float move_speed = ImFloor(NAV_MOVE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); // FIXME: Doesn't code variable framerate very well
+            g.NavWindowingTarget->RootWindow->Pos += move_delta * move_speed;
+            g.NavDisableMouseHover = true;
+            MarkIniSettingsDirty(g.NavWindowingTarget);
+        }
+    }
+
+    // Apply final focus
+    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
+    {
+        g.NavDisableHighlight = false;
+        g.NavDisableMouseHover = true;
+        apply_focus_window = NavRestoreLastChildNavWindow(apply_focus_window);
+        ClosePopupsOverWindow(apply_focus_window);
+        FocusWindow(apply_focus_window);
+        if (apply_focus_window->NavLastIds[0] == 0)
+            NavInitWindow(apply_focus_window, false);
+
+        // If the window only has a menu layer, select it directly
+        if (apply_focus_window->DC.NavLayerActiveMask == (1 << 1))
+            g.NavLayer = 1;
+    }
+    if (apply_focus_window)
+        g.NavWindowingTarget = NULL;
+
+    // Apply menu/layer toggle
+    if (apply_toggle_layer && g.NavWindow)
+    {
+        // Move to parent menu if necessary
+        ImGuiWindow* new_nav_window = g.NavWindow;
+        while ((new_nav_window->DC.NavLayerActiveMask & (1 << 1)) == 0 && (new_nav_window->Flags & ImGuiWindowFlags_ChildWindow) != 0 && (new_nav_window->Flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_ChildMenu)) == 0)
+            new_nav_window = new_nav_window->ParentWindow;
+        if (new_nav_window != g.NavWindow)
+        {
+            ImGuiWindow* old_nav_window = g.NavWindow;
+            FocusWindow(new_nav_window);
+            new_nav_window->NavLastChildNavWindow = old_nav_window;
+        }
+        g.NavDisableHighlight = false;
+        g.NavDisableMouseHover = true;
+        NavRestoreLayer((g.NavWindow->DC.NavLayerActiveMask & (1 << 1)) ? (g.NavLayer ^ 1) : 0);
+    }
+}
+
+// Window has already passed the IsWindowNavFocusable()
+static const char* GetFallbackWindowNameForWindowingList(ImGuiWindow* window)
+{
+    if (window->Flags & ImGuiWindowFlags_Popup)
+        return "(Popup)";
+    if ((window->Flags & ImGuiWindowFlags_MenuBar) && strcmp(window->Name, "##MainMenuBar") == 0)
+        return "(Main menu bar)";
+    return "(Untitled)";
+}
+
+// Overlay displayed when using CTRL+TAB. Called by EndFrame().
+void ImGui::NavUpdateWindowingList()
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.NavWindowingTarget != NULL);
+
+    if (g.NavWindowingTimer < NAV_WINDOWING_LIST_APPEAR_DELAY)
+        return;
+
+    if (g.NavWindowingList == NULL)
+        g.NavWindowingList = FindWindowByName("###NavWindowingList");
+    SetNextWindowSizeConstraints(ImVec2(g.IO.DisplaySize.x * 0.20f, g.IO.DisplaySize.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
+    SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
+    PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
+    Begin("###NavWindowingList", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings);
+    for (int n = g.Windows.Size - 1; n >= 0; n--)
+    {
+        ImGuiWindow* window = g.Windows[n];
+        if (!IsWindowNavFocusable(window))
+            continue;
+        const char* label = window->Name;
+        if (label == FindRenderedTextEnd(label))
+            label = GetFallbackWindowNameForWindowingList(window);
+        Selectable(label, g.NavWindowingTarget == window);
+    }
+    End();
+    PopStyleVar();
+}
+
+//-----------------------------------------------------------------------------
+// COLUMNS
+//-----------------------------------------------------------------------------
+
 void ImGui::NextColumn()
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -13627,94 +8103,6 @@
         BeginColumns(id, columns_count, flags);
 }
 
-void ImGui::Indent(float indent_w)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    window->DC.Indent.x += (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
-    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
-}
-
-void ImGui::Unindent(float indent_w)
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = GetCurrentWindow();
-    window->DC.Indent.x -= (indent_w != 0.0f) ? indent_w : g.Style.IndentSpacing;
-    window->DC.CursorPos.x = window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x;
-}
-
-void ImGui::TreePush(const char* str_id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    PushID(str_id ? str_id : "#TreePush");
-}
-
-void ImGui::TreePush(const void* ptr_id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    PushID(ptr_id ? ptr_id : (const void*)"#TreePush");
-}
-
-void ImGui::TreePushRawID(ImGuiID id)
-{
-    ImGuiWindow* window = GetCurrentWindow();
-    Indent();
-    window->DC.TreeDepth++;
-    window->IDStack.push_back(id);
-}
-
-void ImGui::TreePop()
-{
-    ImGuiContext& g = *GImGui;
-    ImGuiWindow* window = g.CurrentWindow;
-    Unindent();
-
-    window->DC.TreeDepth--;
-    if (g.NavMoveDir == ImGuiDir_Left && g.NavWindow == window && NavMoveRequestButNoResultYet())
-        if (g.NavIdIsAlive && (window->DC.TreeDepthMayJumpToParentOnPop & (1 << window->DC.TreeDepth)))
-        {
-            SetNavID(window->IDStack.back(), g.NavLayer);
-            NavMoveRequestCancel();
-        }
-    window->DC.TreeDepthMayJumpToParentOnPop &= (1 << window->DC.TreeDepth) - 1;
-
-    IM_ASSERT(window->IDStack.Size > 1); // There should always be 1 element in the IDStack (pushed during window creation). If this triggers you called TreePop/PopID too much.
-    PopID();
-}
-
-void ImGui::Value(const char* prefix, bool b)
-{
-    Text("%s: %s", prefix, (b ? "true" : "false"));
-}
-
-void ImGui::Value(const char* prefix, int v)
-{
-    Text("%s: %d", prefix, v);
-}
-
-void ImGui::Value(const char* prefix, unsigned int v)
-{
-    Text("%s: %d", prefix, v);
-}
-
-void ImGui::Value(const char* prefix, float v, const char* float_format)
-{
-    if (float_format)
-    {
-        char fmt[64];
-        ImFormatString(fmt, IM_ARRAYSIZE(fmt), "%%s: %s", float_format);
-        Text(fmt, prefix, v);
-    }
-    else
-    {
-        Text("%s: %.3f", prefix, v);
-    }
-}
-
 //-----------------------------------------------------------------------------
 // DRAG AND DROP
 //-----------------------------------------------------------------------------
@@ -14003,6 +8391,397 @@
 }
 
 //-----------------------------------------------------------------------------
+// LOGGING
+//-----------------------------------------------------------------------------
+
+// Pass text data straight to log (without being displayed)
+void ImGui::LogText(const char* fmt, ...)
+{
+    ImGuiContext& g = *GImGui;
+    if (!g.LogEnabled)
+        return;
+
+    va_list args;
+    va_start(args, fmt);
+    if (g.LogFile)
+        vfprintf(g.LogFile, fmt, args);
+    else
+        g.LogClipboard.appendfv(fmt, args);
+    va_end(args);
+}
+
+// Internal version that takes a position to decide on newline placement and pad items according to their depth.
+// We split text into individual lines to add current tree level padding
+void ImGui::LogRenderedText(const ImVec2* ref_pos, const char* text, const char* text_end)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    if (!text_end)
+        text_end = FindRenderedTextEnd(text, text_end);
+
+    const bool log_new_line = ref_pos && (ref_pos->y > window->DC.LogLinePosY + 1);
+    if (ref_pos)
+        window->DC.LogLinePosY = ref_pos->y;
+
+    const char* text_remaining = text;
+    if (g.LogStartDepth > window->DC.TreeDepth)  // Re-adjust padding if we have popped out of our starting depth
+        g.LogStartDepth = window->DC.TreeDepth;
+    const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth);
+    for (;;)
+    {
+        // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry.
+        const char* line_end = text_remaining;
+        while (line_end < text_end)
+            if (*line_end == '\n')
+                break;
+            else
+                line_end++;
+        if (line_end >= text_end)
+            line_end = NULL;
+
+        const bool is_first_line = (text == text_remaining);
+        bool is_last_line = false;
+        if (line_end == NULL)
+        {
+            is_last_line = true;
+            line_end = text_end;
+        }
+        if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
+        {
+            const int char_count = (int)(line_end - text_remaining);
+            if (log_new_line || !is_first_line)
+                LogText(IM_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining);
+            else
+                LogText(" %.*s", char_count, text_remaining);
+        }
+
+        if (is_last_line)
+            break;
+        text_remaining = line_end + 1;
+    }
+}
+
+// Start logging ImGui output to TTY
+void ImGui::LogToTTY(int max_depth)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = stdout;
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+// Start logging ImGui output to given file
+void ImGui::LogToFile(int max_depth, const char* filename)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    if (!filename)
+    {
+        filename = g.IO.LogFilename;
+        if (!filename)
+            return;
+    }
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = ImFileOpen(filename, "ab");
+    if (!g.LogFile)
+    {
+        IM_ASSERT(g.LogFile != NULL); // Consider this an error
+        return;
+    }
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+// Start logging ImGui output to clipboard
+void ImGui::LogToClipboard(int max_depth)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.LogEnabled)
+        return;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    IM_ASSERT(g.LogFile == NULL);
+    g.LogFile = NULL;
+    g.LogEnabled = true;
+    g.LogStartDepth = window->DC.TreeDepth;
+    if (max_depth >= 0)
+        g.LogAutoExpandMaxDepth = max_depth;
+}
+
+void ImGui::LogFinish()
+{
+    ImGuiContext& g = *GImGui;
+    if (!g.LogEnabled)
+        return;
+
+    LogText(IM_NEWLINE);
+    if (g.LogFile != NULL)
+    {
+        if (g.LogFile == stdout)
+            fflush(g.LogFile);
+        else
+            fclose(g.LogFile);
+        g.LogFile = NULL;
+    }
+    if (g.LogClipboard.size() > 1)
+    {
+        SetClipboardText(g.LogClipboard.begin());
+        g.LogClipboard.clear();
+    }
+    g.LogEnabled = false;
+}
+
+// Helper to display logging buttons
+void ImGui::LogButtons()
+{
+    ImGuiContext& g = *GImGui;
+
+    PushID("LogButtons");
+    const bool log_to_tty = Button("Log To TTY"); SameLine();
+    const bool log_to_file = Button("Log To File"); SameLine();
+    const bool log_to_clipboard = Button("Log To Clipboard"); SameLine();
+    PushItemWidth(80.0f);
+    PushAllowKeyboardFocus(false);
+    SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL);
+    PopAllowKeyboardFocus();
+    PopItemWidth();
+    PopID();
+
+    // Start logging at the end of the function so that the buttons don't appear in the log
+    if (log_to_tty)
+        LogToTTY(g.LogAutoExpandMaxDepth);
+    if (log_to_file)
+        LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename);
+    if (log_to_clipboard)
+        LogToClipboard(g.LogAutoExpandMaxDepth);
+}
+
+//-----------------------------------------------------------------------------
+// SETTINGS
+//-----------------------------------------------------------------------------
+
+void ImGui::MarkIniSettingsDirty()
+{
+    ImGuiContext& g = *GImGui;
+    if (g.SettingsDirtyTimer <= 0.0f)
+        g.SettingsDirtyTimer = g.IO.IniSavingRate;
+}
+
+void ImGui::MarkIniSettingsDirty(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+    if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings))
+        if (g.SettingsDirtyTimer <= 0.0f)
+            g.SettingsDirtyTimer = g.IO.IniSavingRate;
+}
+
+static ImGuiWindowSettings* CreateNewWindowSettings(const char* name)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsWindows.push_back(ImGuiWindowSettings());
+    ImGuiWindowSettings* settings = &g.SettingsWindows.back();
+    settings->Name = ImStrdup(name);
+    settings->ID = ImHash(name, 0);
+    return settings;
+}
+
+ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
+{
+    ImGuiContext& g = *GImGui;
+    for (int i = 0; i != g.SettingsWindows.Size; i++)
+        if (g.SettingsWindows[i].ID == id)
+            return &g.SettingsWindows[i];
+    return NULL;
+}
+
+void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
+{
+    size_t file_data_size = 0;
+    char* file_data = (char*)ImFileLoadToMemory(ini_filename, "rb", &file_data_size);
+    if (!file_data)
+        return;
+    LoadIniSettingsFromMemory(file_data, (size_t)file_data_size);
+    ImGui::MemFree(file_data);
+}
+
+ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
+{
+    ImGuiContext& g = *GImGui;
+    const ImGuiID type_hash = ImHash(type_name, 0, 0);
+    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
+        if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
+            return &g.SettingsHandlers[handler_n];
+    return NULL;
+}
+
+// Zero-tolerance, no error reporting, cheap .ini parsing
+void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
+{
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(g.Initialized);
+    IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
+
+    // For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
+    // For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
+    if (ini_size == 0)
+        ini_size = strlen(ini_data);
+    char* buf = (char*)ImGui::MemAlloc(ini_size + 1);
+    char* buf_end = buf + ini_size;
+    memcpy(buf, ini_data, ini_size);
+    buf[ini_size] = 0;
+
+    void* entry_data = NULL;
+    ImGuiSettingsHandler* entry_handler = NULL;
+
+    char* line_end = NULL;
+    for (char* line = buf; line < buf_end; line = line_end + 1)
+    {
+        // Skip new lines markers, then find end of the line
+        while (*line == '\n' || *line == '\r')
+            line++;
+        line_end = line;
+        while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
+            line_end++;
+        line_end[0] = 0;
+
+        if (line[0] == '[' && line_end > line && line_end[-1] == ']')
+        {
+            // Parse "[Type][Name]". Note that 'Name' can itself contains [] characters, which is acceptable with the current format and parsing code.
+            line_end[-1] = 0;
+            const char* name_end = line_end - 1;
+            const char* type_start = line + 1;
+            char* type_end = (char*)(intptr_t)ImStrchrRange(type_start, name_end, ']');
+            const char* name_start = type_end ? ImStrchrRange(type_end + 1, name_end, '[') : NULL;
+            if (!type_end || !name_start)
+            {
+                name_start = type_start; // Import legacy entries that have no type
+                type_start = "Window";
+            }
+            else
+            {
+                *type_end = 0; // Overwrite first ']'
+                name_start++;  // Skip second '['
+            }
+            entry_handler = FindSettingsHandler(type_start);
+            entry_data = entry_handler ? entry_handler->ReadOpenFn(&g, entry_handler, name_start) : NULL;
+        }
+        else if (entry_handler != NULL && entry_data != NULL)
+        {
+            // Let type handler parse the line
+            entry_handler->ReadLineFn(&g, entry_handler, entry_data, line);
+        }
+    }
+    ImGui::MemFree(buf);
+    g.SettingsLoaded = true;
+}
+
+void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsDirtyTimer = 0.0f;
+    if (!ini_filename)
+        return;
+
+    size_t ini_data_size = 0;
+    const char* ini_data = SaveIniSettingsToMemory(&ini_data_size);
+    FILE* f = ImFileOpen(ini_filename, "wt");
+    if (!f)
+        return;
+    fwrite(ini_data, sizeof(char), ini_data_size, f);
+    fclose(f);
+}
+
+// Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer
+const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
+{
+    ImGuiContext& g = *GImGui;
+    g.SettingsDirtyTimer = 0.0f;
+    g.SettingsIniData.Buf.resize(0);
+    g.SettingsIniData.Buf.push_back(0);
+    for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
+    {
+        ImGuiSettingsHandler* handler = &g.SettingsHandlers[handler_n];
+        handler->WriteAllFn(&g, handler, &g.SettingsIniData);
+    }
+    if (out_size)
+        *out_size = (size_t)g.SettingsIniData.size();
+    return g.SettingsIniData.c_str();
+}
+
+static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
+{
+    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHash(name, 0));
+    if (!settings)
+        settings = CreateNewWindowSettings(name);
+    return (void*)settings;
+}
+
+static void SettingsHandlerWindow_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
+{
+    ImGuiWindowSettings* settings = (ImGuiWindowSettings*)entry;
+    float x, y;
+    int i;
+    if (sscanf(line, "Pos=%f,%f", &x, &y) == 2)         settings->Pos = ImVec2(x, y);
+    else if (sscanf(line, "Size=%f,%f", &x, &y) == 2)   settings->Size = ImMax(ImVec2(x, y), GImGui->Style.WindowMinSize);
+    else if (sscanf(line, "Collapsed=%d", &i) == 1)     settings->Collapsed = (i != 0);
+}
+
+static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
+{
+    // Gather data from windows that were active during this session
+    ImGuiContext& g = *imgui_ctx;
+    for (int i = 0; i != g.Windows.Size; i++)
+    {
+        ImGuiWindow* window = g.Windows[i];
+        if (window->Flags & ImGuiWindowFlags_NoSavedSettings)
+            continue;
+
+        ImGuiWindowSettings* settings = (window->SettingsIdx != -1) ? &g.SettingsWindows[window->SettingsIdx] : ImGui::FindWindowSettings(window->ID);
+        if (!settings)
+        {
+            settings = CreateNewWindowSettings(window->Name);
+            window->SettingsIdx = g.SettingsWindows.index_from_pointer(settings);
+        }
+        IM_ASSERT(settings->ID == window->ID);
+        settings->Pos = window->Pos;
+        settings->Size = window->SizeFull;
+        settings->Collapsed = window->Collapsed;
+    }
+
+    // Write a buffer
+    // If a window wasn't opened in this session we preserve its settings
+    buf->reserve(buf->size() + g.SettingsWindows.Size * 96); // ballpark reserve
+    for (int i = 0; i != g.SettingsWindows.Size; i++)
+    {
+        const ImGuiWindowSettings* settings = &g.SettingsWindows[i];
+        if (settings->Pos.x == FLT_MAX)
+            continue;
+        const char* name = settings->Name;
+        if (const char* p = strstr(name, "###"))  // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID()
+            name = p;
+        buf->appendf("[%s][%s]\n", handler->TypeName, name);
+        buf->appendf("Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
+        buf->appendf("Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
+        buf->appendf("Collapsed=%d\n", settings->Collapsed);
+        buf->appendf("\n");
+    }
+}
+
+//-----------------------------------------------------------------------------
 // PLATFORM DEPENDENT HELPERS
 //-----------------------------------------------------------------------------
 
@@ -14119,7 +8898,7 @@
 #endif
 
 //-----------------------------------------------------------------------------
-// HELP, METRICS
+// METRICS/DEBUG WINDOW
 //-----------------------------------------------------------------------------
 
 void ImGui::ShowMetricsWindow(bool* p_open)
diff --git a/imgui.h b/imgui.h
index 52caf45..97f79a8 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (headers)
 
 // See imgui.cpp file for documentation.
@@ -23,8 +23,8 @@
 
 // Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY00 then bounced up to XYY01 when release tagging happens)
-#define IMGUI_VERSION               "1.63"
-#define IMGUI_VERSION_NUM           16301
+#define IMGUI_VERSION               "1.64"
+#define IMGUI_VERSION_NUM           16401
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert))
 
 // Define attributes of all API symbols declarations (e.g. for DLL under Windows)
diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index 49ef8bc..1702474 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (demo code)
 
 // Message to the person tempted to delete this file when integrating ImGui into their code base:
diff --git a/imgui_draw.cpp b/imgui_draw.cpp
index d7044ca..98fbc45 100644
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@@ -1,14 +1,21 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (drawing and font code)
 
-// Contains implementation for
-// - Default styles
-// - ImDrawList
-// - ImDrawData
-// - ImFontAtlas
-// - Internal Render Helpers
-// - ImFont
-// - Default font data
+/*
+
+Index of this file:
+- Cruft for stb_truetype/stb_rectpack implementation
+- Style functions (default style)
+- ImDrawList
+- ImDrawData
+- ShadeVertsXXX helpers functions
+- ImFontConfig
+- ImFontAtlas
+- ImFont
+- Internal Render Helpers
+- Default font data
+
+*/
 
 #if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
 #define _CRT_SECURE_NO_WARNINGS
diff --git a/imgui_internal.h b/imgui_internal.h
index f9d55b3..81116ce 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64
 // (internal structures/api)
 
 // You may use this file to debug, understand or extend ImGui features but we don't provide any guarantee of forward compatibility!
@@ -1137,8 +1137,9 @@
     // Settings
     IMGUI_API void                  MarkIniSettingsDirty();
     IMGUI_API void                  MarkIniSettingsDirty(ImGuiWindow* window);
-    IMGUI_API ImGuiSettingsHandler* FindSettingsHandler(const char* type_name);
+    IMGUI_API ImGuiWindowSettings*  CreateNewWindowSettings(const char* name);
     IMGUI_API ImGuiWindowSettings*  FindWindowSettings(ImGuiID id);
+    IMGUI_API ImGuiSettingsHandler* FindSettingsHandler(const char* type_name);
 
     // Basic Accessors
     inline ImGuiID          GetItemID()     { ImGuiContext& g = *GImGui; return g.CurrentWindow->DC.LastItemId; }
diff --git a/imgui_widgets.cpp b/imgui_widgets.cpp
new file mode 100644
index 0000000..285617f
--- /dev/null
+++ b/imgui_widgets.cpp
@@ -0,0 +1,5531 @@
+// dear imgui, v1.64
+// (widgets code)
+
+/*
+
+Index of this file:
+- Widgets: Text, etc.
+- Widgets: Button, Image, Checkbox, RadioButton, ProgressBar, Bullet, etc.
+- Widgets: ComboBox
+- Data Type and Data Formatting Helpers
+- Widgets: DragScalar, DragFloat, DragInt, etc.
+- Widgets: SliderScalar, SliderFloat, SliderInt, etc.
+- Widgets: InputScalar, InputFloat, InputInt, etc.
+- Widgets: InputText, InputTextMultiline
+- Widgets: ColorEdit, ColorPicker, ColorButton, etc.
+- Widgets: TreeNode, TreePush, TreePop, etc.
+- Widgets: Selectable
+- Widgets: ListBox
+- Widgets: PlotLines, PlotHistogram
+- Widgets: Value
+- Widgets: MenuItem, BeginMenu, EndMenu, etc.
+
+*/
+
+#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include "imgui.h"
+#ifndef IMGUI_DEFINE_MATH_OPERATORS
+#define IMGUI_DEFINE_MATH_OPERATORS
+#endif
+#include "imgui_internal.h"
+
+#include <ctype.h>      // toupper, isprint
+
+// Visual Studio warnings
+#ifdef _MSC_VER
+#pragma warning (disable: 4127) // condition expression is constant
+#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
+#endif
+
+// Clang/GCC warnings with -Weverything
+#ifdef __clang__
+#pragma clang diagnostic ignored "-Wformat-nonliteral"      // warning : format string is not a string literal              // passing non-literal to vsnformat(). yes, user passing incorrect format strings can crash the code.
+#pragma clang diagnostic ignored "-Wsign-conversion"        // warning : implicit conversion changes signedness             //
+#elif defined(__GNUC__)
+#pragma GCC diagnostic ignored "-Wformat-nonliteral"        // warning: format not a string literal, format string not checked
+#if __GNUC__ >= 8
+#pragma GCC diagnostic ignored "-Wclass-memaccess"          // warning: 'memset/memcpy' clearing/writing an object of type 'xxxx' with no trivial copy-assignment; use assignment or value-initialization instead
+#endif
+#endif
+
+//-------------------------------------------------------------------------
+// Data
+//-------------------------------------------------------------------------
+
+// Those MIN/MAX values are not define because we need to point to them
+static const ImS32  IM_S32_MIN = INT_MIN;    // (-2147483647 - 1), (0x80000000);
+static const ImS32  IM_S32_MAX = INT_MAX;    // (2147483647), (0x7FFFFFFF)
+static const ImU32  IM_U32_MIN = 0;
+static const ImU32  IM_U32_MAX = UINT_MAX;   // (0xFFFFFFFF)
+#ifdef LLONG_MIN
+static const ImS64  IM_S64_MIN = LLONG_MIN;  // (-9223372036854775807ll - 1ll);
+static const ImS64  IM_S64_MAX = LLONG_MAX;  // (9223372036854775807ll);
+#else
+static const ImS64  IM_S64_MIN = -9223372036854775807LL - 1;
+static const ImS64  IM_S64_MAX = 9223372036854775807LL;
+#endif
+static const ImU64  IM_U64_MIN = 0;
+#ifdef ULLONG_MAX
+static const ImU64  IM_U64_MAX = ULLONG_MAX; // (0xFFFFFFFFFFFFFFFFull);
+#else
+static const ImU64  IM_U64_MAX = (2ULL * 9223372036854775807LL + 1);
+#endif
+
+//-------------------------------------------------------------------------
+// Forward Declarations
+//-------------------------------------------------------------------------
+
+// Data Type helpers
+static inline int       DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format);
+static void             DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg_1, const void* arg_2);
+static bool             DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format);
+
+// For InputTextEx()
+static bool             InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data);
+static int              InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end);
+static ImVec2           InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL, ImVec2* out_offset = NULL, bool stop_on_new_line = false);
+
+namespace ImGui
+{
+
+// Template widget behaviors
+template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
+static bool             DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power);
+
+template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
+static bool             SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb);
+
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Text
+// - TextUnformatted()
+// - Text()
+// - TextV()
+// - TextColored()
+// - TextColoredV()
+// - TextDisabled()
+// - TextDisabledV()
+// - TextWrapped()
+// - TextWrappedV()
+// - LabelText()
+// - LabelTextV()
+// - BulletText()
+// - BulletTextV()
+//-------------------------------------------------------------------------
+
+void ImGui::TextUnformatted(const char* text, const char* text_end)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return;
+
+    ImGuiContext& g = *GImGui;
+    IM_ASSERT(text != NULL);
+    const char* text_begin = text;
+    if (text_end == NULL)
+        text_end = text + strlen(text); // FIXME-OPT
+
+    const ImVec2 text_pos(window->DC.CursorPos.x, window->DC.CursorPos.y + window->DC.CurrentLineTextBaseOffset);
+    const float wrap_pos_x = window->DC.TextWrapPos;
+    const bool wrap_enabled = wrap_pos_x >= 0.0f;
+    if (text_end - text > 2000 && !wrap_enabled)
+    {
+        // Long text!
+        // Perform manual coarse clipping to optimize for long multi-line text
+        // From this point we will only compute the width of lines that are visible. Optimization only available when word-wrapping is disabled.
+        // We also don't vertically center the text within the line full height, which is unlikely to matter because we are likely the biggest and only item on the line.
+        const char* line = text;
+        const float line_height = GetTextLineHeight();
+        const ImRect clip_rect = window->ClipRect;
+        ImVec2 text_size(0,0);
+
+        if (text_pos.y <= clip_rect.Max.y)
+        {
+            ImVec2 pos = text_pos;
+
+            // Lines to skip (can't skip when logging text)
+            if (!g.LogEnabled)
+            {
+                int lines_skippable = (int)((clip_rect.Min.y - text_pos.y) / line_height);
+                if (lines_skippable > 0)
+                {
+                    int lines_skipped = 0;
+                    while (line < text_end && lines_skipped < lines_skippable)
+                    {
+                        const char* line_end = strchr(line, '\n');
+                        if (!line_end)
+                            line_end = text_end;
+                        line = line_end + 1;
+                        lines_skipped++;
+                    }
+                    pos.y += lines_skipped * line_height;
+                }
+            }
+
+            // Lines to render
+            if (line < text_end)
+            {
+                ImRect line_rect(pos, pos + ImVec2(FLT_MAX, line_height));
+                while (line < text_end)
+                {
+                    const char* line_end = strchr(line, '\n');
+                    if (IsClippedEx(line_rect, 0, false))
+                        break;
+
+                    const ImVec2 line_size = CalcTextSize(line, line_end, false);
+                    text_size.x = ImMax(text_size.x, line_size.x);
+                    RenderText(pos, line, line_end, false);
+                    if (!line_end)
+                        line_end = text_end;
+                    line = line_end + 1;
+                    line_rect.Min.y += line_height;
+                    line_rect.Max.y += line_height;
+                    pos.y += line_height;
+                }
+
+                // Count remaining lines
+                int lines_skipped = 0;
+                while (line < text_end)
+                {
+                    const char* line_end = strchr(line, '\n');
+                    if (!line_end)
+                        line_end = text_end;
+                    line = line_end + 1;
+                    lines_skipped++;
+                }
+                pos.y += lines_skipped * line_height;
+            }
+
+            text_size.y += (pos - text_pos).y;
+        }
+
+        ImRect bb(text_pos, text_pos + text_size);
+        ItemSize(bb);
+        ItemAdd(bb, 0);
+    }
+    else
+    {
+        const float wrap_width = wrap_enabled ? CalcWrapWidthForPos(window->DC.CursorPos, wrap_pos_x) : 0.0f;
+        const ImVec2 text_size = CalcTextSize(text_begin, text_end, false, wrap_width);
+
+        // Account of baseline offset
+        ImRect bb(text_pos, text_pos + text_size);
+        ItemSize(text_size);
+        if (!ItemAdd(bb, 0))
+            return;
+
+        // Render (we don't hide text after ## in this end-user function)
+        RenderTextWrapped(bb.Min, text_begin, text_end, wrap_width);
+    }
+}
+
+void ImGui::Text(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    TextV(fmt, args);
+    va_end(args);
+}
+
+void ImGui::TextV(const char* fmt, va_list args)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return;
+
+    ImGuiContext& g = *GImGui;
+    const char* text_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
+    TextUnformatted(g.TempBuffer, text_end);
+}
+
+void ImGui::TextColored(const ImVec4& col, const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    TextColoredV(col, fmt, args);
+    va_end(args);
+}
+
+void ImGui::TextColoredV(const ImVec4& col, const char* fmt, va_list args)
+{
+    PushStyleColor(ImGuiCol_Text, col);
+    TextV(fmt, args);
+    PopStyleColor();
+}
+
+void ImGui::TextDisabled(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    TextDisabledV(fmt, args);
+    va_end(args);
+}
+
+void ImGui::TextDisabledV(const char* fmt, va_list args)
+{
+    PushStyleColor(ImGuiCol_Text, GImGui->Style.Colors[ImGuiCol_TextDisabled]);
+    TextV(fmt, args);
+    PopStyleColor();
+}
+
+void ImGui::TextWrapped(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    TextWrappedV(fmt, args);
+    va_end(args);
+}
+
+void ImGui::TextWrappedV(const char* fmt, va_list args)
+{
+    bool need_wrap = (GImGui->CurrentWindow->DC.TextWrapPos < 0.0f);    // Keep existing wrap position is one ia already set
+    if (need_wrap) PushTextWrapPos(0.0f);
+    TextV(fmt, args);
+    if (need_wrap) PopTextWrapPos();
+}
+
+void ImGui::LabelText(const char* label, const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    LabelTextV(label, fmt, args);
+    va_end(args);
+}
+
+// Add a label+text combo aligned to other label+value widgets
+void ImGui::LabelTextV(const char* label, const char* fmt, va_list args)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+    const float w = CalcItemWidth();
+
+    const ImVec2 label_size = CalcTextSize(label, NULL, true);
+    const ImRect value_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2));
+    const ImRect total_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w + (label_size.x > 0.0f ? style.ItemInnerSpacing.x : 0.0f), style.FramePadding.y*2) + label_size);
+    ItemSize(total_bb, style.FramePadding.y);
+    if (!ItemAdd(total_bb, 0))
+        return;
+
+    // Render
+    const char* value_text_begin = &g.TempBuffer[0];
+    const char* value_text_end = value_text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
+    RenderTextClipped(value_bb.Min, value_bb.Max, value_text_begin, value_text_end, NULL, ImVec2(0.0f,0.5f));
+    if (label_size.x > 0.0f)
+        RenderText(ImVec2(value_bb.Max.x + style.ItemInnerSpacing.x, value_bb.Min.y + style.FramePadding.y), label);
+}
+
+void ImGui::BulletText(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    BulletTextV(fmt, args);
+    va_end(args);
+}
+
+// Text with a little bullet aligned to the typical tree node.
+void ImGui::BulletTextV(const char* fmt, va_list args)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+
+    const char* text_begin = g.TempBuffer;
+    const char* text_end = text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
+    const ImVec2 label_size = CalcTextSize(text_begin, text_end, false);
+    const float text_base_offset_y = ImMax(0.0f, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
+    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
+    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize + (label_size.x > 0.0f ? (label_size.x + style.FramePadding.x*2) : 0.0f), ImMax(line_height, label_size.y)));  // Empty text doesn't add padding
+    ItemSize(bb);
+    if (!ItemAdd(bb, 0))
+        return;
+
+    // Render
+    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
+    RenderText(bb.Min+ImVec2(g.FontSize + style.FramePadding.x*2, text_base_offset_y), text_begin, text_end, false);
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Main
+// - ButtonBehavior() [Internal]
+// - Button()
+// - SmallButton()
+// - InvisibleButton()
+// - ArrowButton()
+// - CloseButton() [Internal]
+// - CollapseButton() [Internal]
+// - Scrollbar() [Internal]
+// - Image()
+// - ImageButton()
+// - Checkbox()
+// - CheckboxFlags()
+// - RadioButton()
+// - ProgressBar()
+// - Bullet()
+//-------------------------------------------------------------------------
+
+bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool* out_held, ImGuiButtonFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+
+    if (flags & ImGuiButtonFlags_Disabled)
+    {
+        if (out_hovered) *out_hovered = false;
+        if (out_held) *out_held = false;
+        if (g.ActiveId == id) ClearActiveID();
+        return false;
+    }
+
+    // Default behavior requires click+release on same spot
+    if ((flags & (ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnClick | ImGuiButtonFlags_PressedOnRelease | ImGuiButtonFlags_PressedOnDoubleClick)) == 0)
+        flags |= ImGuiButtonFlags_PressedOnClickRelease;
+
+    ImGuiWindow* backup_hovered_window = g.HoveredWindow;
+    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
+        g.HoveredWindow = window;
+
+    bool pressed = false;
+    bool hovered = ItemHoverable(bb, id);
+
+    // Drag source doesn't report as hovered
+    if (hovered && g.DragDropActive && g.DragDropPayload.SourceId == id && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoDisableHover))
+        hovered = false;
+
+    // Special mode for Drag and Drop where holding button pressed for a long time while dragging another item triggers the button
+    if (g.DragDropActive && (flags & ImGuiButtonFlags_PressedOnDragDropHold) && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoHoldToOpenOthers))
+        if (IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem))
+        {
+            hovered = true;
+            SetHoveredID(id);
+            if (CalcTypematicPressedRepeatAmount(g.HoveredIdTimer + 0.0001f, g.HoveredIdTimer + 0.0001f - g.IO.DeltaTime, 0.01f, 0.70f)) // FIXME: Our formula for CalcTypematicPressedRepeatAmount() is fishy
+            {
+                pressed = true;
+                FocusWindow(window);
+            }
+        }
+
+    if ((flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredRootWindow == window)
+        g.HoveredWindow = backup_hovered_window;
+
+    // AllowOverlap mode (rarely used) requires previous frame HoveredId to be null or to match. This allows using patterns where a later submitted widget overlaps a previous one.
+    if (hovered && (flags & ImGuiButtonFlags_AllowItemOverlap) && (g.HoveredIdPreviousFrame != id && g.HoveredIdPreviousFrame != 0))
+        hovered = false;
+
+    // Mouse
+    if (hovered)
+    {
+        if (!(flags & ImGuiButtonFlags_NoKeyModifiers) || (!g.IO.KeyCtrl && !g.IO.KeyShift && !g.IO.KeyAlt))
+        {
+            //                        | CLICKING        | HOLDING with ImGuiButtonFlags_Repeat
+            // PressedOnClickRelease  |  <on release>*  |  <on repeat> <on repeat> .. (NOT on release)  <-- MOST COMMON! (*) only if both click/release were over bounds
+            // PressedOnClick         |  <on click>     |  <on click> <on repeat> <on repeat> ..
+            // PressedOnRelease       |  <on release>   |  <on repeat> <on repeat> .. (NOT on release)
+            // PressedOnDoubleClick   |  <on dclick>    |  <on dclick> <on repeat> <on repeat> ..
+            // FIXME-NAV: We don't honor those different behaviors.
+            if ((flags & ImGuiButtonFlags_PressedOnClickRelease) && g.IO.MouseClicked[0])
+            {
+                SetActiveID(id, window);
+                if (!(flags & ImGuiButtonFlags_NoNavFocus))
+                    SetFocusID(id, window);
+                FocusWindow(window);
+            }
+            if (((flags & ImGuiButtonFlags_PressedOnClick) && g.IO.MouseClicked[0]) || ((flags & ImGuiButtonFlags_PressedOnDoubleClick) && g.IO.MouseDoubleClicked[0]))
+            {
+                pressed = true;
+                if (flags & ImGuiButtonFlags_NoHoldingActiveID)
+                    ClearActiveID();
+                else
+                    SetActiveID(id, window); // Hold on ID
+                FocusWindow(window);
+            }
+            if ((flags & ImGuiButtonFlags_PressedOnRelease) && g.IO.MouseReleased[0])
+            {
+                if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
+                    pressed = true;
+                ClearActiveID();
+            }
+
+            // 'Repeat' mode acts when held regardless of _PressedOn flags (see table above).
+            // Relies on repeat logic of IsMouseClicked() but we may as well do it ourselves if we end up exposing finer RepeatDelay/RepeatRate settings.
+            if ((flags & ImGuiButtonFlags_Repeat) && g.ActiveId == id && g.IO.MouseDownDuration[0] > 0.0f && IsMouseClicked(0, true))
+                pressed = true;
+        }
+
+        if (pressed)
+            g.NavDisableHighlight = true;
+    }
+
+    // Gamepad/Keyboard navigation
+    // We report navigated item as hovered but we don't set g.HoveredId to not interfere with mouse.
+    if (g.NavId == id && !g.NavDisableHighlight && g.NavDisableMouseHover && (g.ActiveId == 0 || g.ActiveId == id || g.ActiveId == window->MoveId))
+        hovered = true;
+
+    if (g.NavActivateDownId == id)
+    {
+        bool nav_activated_by_code = (g.NavActivateId == id);
+        bool nav_activated_by_inputs = IsNavInputPressed(ImGuiNavInput_Activate, (flags & ImGuiButtonFlags_Repeat) ? ImGuiInputReadMode_Repeat : ImGuiInputReadMode_Pressed);
+        if (nav_activated_by_code || nav_activated_by_inputs)
+            pressed = true;
+        if (nav_activated_by_code || nav_activated_by_inputs || g.ActiveId == id)
+        {
+            // Set active id so it can be queried by user via IsItemActive(), equivalent of holding the mouse button.
+            g.NavActivateId = id; // This is so SetActiveId assign a Nav source
+            SetActiveID(id, window);
+            if (!(flags & ImGuiButtonFlags_NoNavFocus))
+                SetFocusID(id, window);
+            g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right) | (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
+        }
+    }
+
+    bool held = false;
+    if (g.ActiveId == id)
+    {
+        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
+        {
+            if (g.ActiveIdIsJustActivated)
+                g.ActiveIdClickOffset = g.IO.MousePos - bb.Min;
+            if (g.IO.MouseDown[0])
+            {
+                held = true;
+            }
+            else
+            {
+                if (hovered && (flags & ImGuiButtonFlags_PressedOnClickRelease))
+                    if (!((flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[0] >= g.IO.KeyRepeatDelay))  // Repeat mode trumps <on release>
+                        if (!g.DragDropActive)
+                            pressed = true;
+                ClearActiveID();
+            }
+            if (!(flags & ImGuiButtonFlags_NoNavFocus))
+                g.NavDisableHighlight = true;
+        }
+        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
+        {
+            if (g.NavActivateDownId != id)
+                ClearActiveID();
+        }
+    }
+
+    if (out_hovered) *out_hovered = hovered;
+    if (out_held) *out_held = held;
+
+    return pressed;
+}
+
+bool ImGui::ButtonEx(const char* label, const ImVec2& size_arg, ImGuiButtonFlags flags)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+    const ImGuiID id = window->GetID(label);
+    const ImVec2 label_size = CalcTextSize(label, NULL, true);
+
+    ImVec2 pos = window->DC.CursorPos;
+    if ((flags & ImGuiButtonFlags_AlignTextBaseLine) && style.FramePadding.y < window->DC.CurrentLineTextBaseOffset) // Try to vertically align buttons that are smaller/have no padding so that text baseline matches (bit hacky, since it shouldn't be a flag)
+        pos.y += window->DC.CurrentLineTextBaseOffset - style.FramePadding.y;
+    ImVec2 size = CalcItemSize(size_arg, label_size.x + style.FramePadding.x * 2.0f, label_size.y + style.FramePadding.y * 2.0f);
+
+    const ImRect bb(pos, pos + size);
+    ItemSize(bb, style.FramePadding.y);
+    if (!ItemAdd(bb, id))
+        return false;
+
+    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
+        flags |= ImGuiButtonFlags_Repeat;
+    bool hovered, held;
+    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
+    if (pressed)
+        MarkItemEdited(id);
+
+    // Render
+    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
+    RenderNavHighlight(bb, id);
+    RenderFrame(bb.Min, bb.Max, col, true, style.FrameRounding);
+    RenderTextClipped(bb.Min + style.FramePadding, bb.Max - style.FramePadding, label, NULL, &label_size, style.ButtonTextAlign, &bb);
+
+    // Automatically close popups
+    //if (pressed && !(flags & ImGuiButtonFlags_DontClosePopups) && (window->Flags & ImGuiWindowFlags_Popup))
+    //    CloseCurrentPopup();
+
+    return pressed;
+}
+
+bool ImGui::Button(const char* label, const ImVec2& size_arg)
+{
+    return ButtonEx(label, size_arg, 0);
+}
+
+// Small buttons fits within text without additional vertical spacing.
+bool ImGui::SmallButton(const char* label)
+{
+    ImGuiContext& g = *GImGui;
+    float backup_padding_y = g.Style.FramePadding.y;
+    g.Style.FramePadding.y = 0.0f;
+    bool pressed = ButtonEx(label, ImVec2(0, 0), ImGuiButtonFlags_AlignTextBaseLine);
+    g.Style.FramePadding.y = backup_padding_y;
+    return pressed;
+}
+
+// Tip: use ImGui::PushID()/PopID() to push indices or pointers in the ID stack.
+// Then you can keep 'str_id' empty or the same for all your buttons (instead of creating a string based on a non-string id)
+bool ImGui::InvisibleButton(const char* str_id, const ImVec2& size_arg)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    // Cannot use zero-size for InvisibleButton(). Unlike Button() there is not way to fallback using the label size.
+    IM_ASSERT(size_arg.x != 0.0f && size_arg.y != 0.0f);
+
+    const ImGuiID id = window->GetID(str_id);
+    ImVec2 size = CalcItemSize(size_arg, 0.0f, 0.0f);
+    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
+    ItemSize(bb);
+    if (!ItemAdd(bb, id))
+        return false;
+
+    bool hovered, held;
+    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
+
+    return pressed;
+}
+
+bool ImGui::ArrowButtonEx(const char* str_id, ImGuiDir dir, ImVec2 size, ImGuiButtonFlags flags)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiID id = window->GetID(str_id);
+    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
+    const float default_size = GetFrameHeight();
+    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
+    if (!ItemAdd(bb, id))
+        return false;
+
+    if (window->DC.ItemFlags & ImGuiItemFlags_ButtonRepeat)
+        flags |= ImGuiButtonFlags_Repeat;
+
+    bool hovered, held;
+    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
+
+    // Render
+    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
+    RenderNavHighlight(bb, id);
+    RenderFrame(bb.Min, bb.Max, col, true, g.Style.FrameRounding);
+    RenderArrow(bb.Min + ImVec2(ImMax(0.0f, size.x - g.FontSize - g.Style.FramePadding.x), ImMax(0.0f, size.y - g.FontSize - g.Style.FramePadding.y)), dir);
+
+    return pressed;
+}
+
+bool ImGui::ArrowButton(const char* str_id, ImGuiDir dir)
+{
+    float sz = GetFrameHeight();
+    return ArrowButtonEx(str_id, dir, ImVec2(sz, sz), 0);
+}
+
+// Button to close a window
+bool ImGui::CloseButton(ImGuiID id, const ImVec2& pos, float radius)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    // We intentionally allow interaction when clipped so that a mechanical Alt,Right,Validate sequence close a window.
+    // (this isn't the regular behavior of buttons, but it doesn't affect the user much because navigation tends to keep items visible).
+    const ImRect bb(pos - ImVec2(radius,radius), pos + ImVec2(radius,radius));
+    bool is_clipped = !ItemAdd(bb, id);
+
+    bool hovered, held;
+    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
+    if (is_clipped)
+        return pressed;
+
+    // Render
+    ImVec2 center = bb.GetCenter();
+    if (hovered)
+        window->DrawList->AddCircleFilled(center, ImMax(2.0f, radius), GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : ImGuiCol_ButtonHovered), 9);
+
+    float cross_extent = (radius * 0.7071f) - 1.0f;
+    ImU32 cross_col = GetColorU32(ImGuiCol_Text);
+    center -= ImVec2(0.5f, 0.5f);
+    window->DrawList->AddLine(center + ImVec2(+cross_extent,+cross_extent), center + ImVec2(-cross_extent,-cross_extent), cross_col, 1.0f);
+    window->DrawList->AddLine(center + ImVec2(+cross_extent,-cross_extent), center + ImVec2(-cross_extent,+cross_extent), cross_col, 1.0f);
+
+    return pressed;
+}
+
+bool ImGui::CollapseButton(ImGuiID id, const ImVec2& pos)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    ImRect bb(pos, pos + ImVec2(g.FontSize, g.FontSize) + g.Style.FramePadding * 2.0f);
+    ItemAdd(bb, id);
+    bool hovered, held;
+    bool pressed = ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_None);
+
+    ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
+    if (hovered || held)
+        window->DrawList->AddCircleFilled(bb.GetCenter() + ImVec2(0.0f, -0.5f), g.FontSize * 0.5f + 1.0f, col, 9);
+    RenderArrow(bb.Min + g.Style.FramePadding, window->Collapsed ? ImGuiDir_Right : ImGuiDir_Down, 1.0f);
+
+    // Switch to moving the window after mouse is moved beyond the initial drag threshold
+    if (IsItemActive() && IsMouseDragging())
+        StartMouseMovingWindow(window);
+
+    return pressed;
+}
+
+// Vertical/Horizontal scrollbar
+// The entire piece of code below is rather confusing because:
+// - We handle absolute seeking (when first clicking outside the grab) and relative manipulation (afterward or when clicking inside the grab)
+// - We store values as normalized ratio and in a form that allows the window content to change while we are holding on a scrollbar
+// - We handle both horizontal and vertical scrollbars, which makes the terminology not ideal.
+void ImGui::Scrollbar(ImGuiLayoutType direction)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+
+    const bool horizontal = (direction == ImGuiLayoutType_Horizontal);
+    const ImGuiStyle& style = g.Style;
+    const ImGuiID id = window->GetID(horizontal ? "#SCROLLX" : "#SCROLLY");
+
+    // Render background
+    bool other_scrollbar = (horizontal ? window->ScrollbarY : window->ScrollbarX);
+    float other_scrollbar_size_w = other_scrollbar ? style.ScrollbarSize : 0.0f;
+    const ImRect window_rect = window->Rect();
+    const float border_size = window->WindowBorderSize;
+    ImRect bb = horizontal
+        ? ImRect(window->Pos.x + border_size, window_rect.Max.y - style.ScrollbarSize, window_rect.Max.x - other_scrollbar_size_w - border_size, window_rect.Max.y - border_size)
+        : ImRect(window_rect.Max.x - style.ScrollbarSize, window->Pos.y + border_size, window_rect.Max.x - border_size, window_rect.Max.y - other_scrollbar_size_w - border_size);
+    if (!horizontal)
+        bb.Min.y += window->TitleBarHeight() + ((window->Flags & ImGuiWindowFlags_MenuBar) ? window->MenuBarHeight() : 0.0f);
+    if (bb.GetWidth() <= 0.0f || bb.GetHeight() <= 0.0f)
+        return;
+
+    int window_rounding_corners;
+    if (horizontal)
+        window_rounding_corners = ImDrawCornerFlags_BotLeft | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
+    else
+        window_rounding_corners = (((window->Flags & ImGuiWindowFlags_NoTitleBar) && !(window->Flags & ImGuiWindowFlags_MenuBar)) ? ImDrawCornerFlags_TopRight : 0) | (other_scrollbar ? 0 : ImDrawCornerFlags_BotRight);
+    window->DrawList->AddRectFilled(bb.Min, bb.Max, GetColorU32(ImGuiCol_ScrollbarBg), window->WindowRounding, window_rounding_corners);
+    bb.Expand(ImVec2(-ImClamp((float)(int)((bb.Max.x - bb.Min.x - 2.0f) * 0.5f), 0.0f, 3.0f), -ImClamp((float)(int)((bb.Max.y - bb.Min.y - 2.0f) * 0.5f), 0.0f, 3.0f)));
+
+    // V denote the main, longer axis of the scrollbar (= height for a vertical scrollbar)
+    float scrollbar_size_v = horizontal ? bb.GetWidth() : bb.GetHeight();
+    float scroll_v = horizontal ? window->Scroll.x : window->Scroll.y;
+    float win_size_avail_v = (horizontal ? window->SizeFull.x : window->SizeFull.y) - other_scrollbar_size_w;
+    float win_size_contents_v = horizontal ? window->SizeContents.x : window->SizeContents.y;
+
+    // Calculate the height of our grabbable box. It generally represent the amount visible (vs the total scrollable amount)
+    // But we maintain a minimum size in pixel to allow for the user to still aim inside.
+    IM_ASSERT(ImMax(win_size_contents_v, win_size_avail_v) > 0.0f); // Adding this assert to check if the ImMax(XXX,1.0f) is still needed. PLEASE CONTACT ME if this triggers.
+    const float win_size_v = ImMax(ImMax(win_size_contents_v, win_size_avail_v), 1.0f);
+    const float grab_h_pixels = ImClamp(scrollbar_size_v * (win_size_avail_v / win_size_v), style.GrabMinSize, scrollbar_size_v);
+    const float grab_h_norm = grab_h_pixels / scrollbar_size_v;
+
+    // Handle input right away. None of the code of Begin() is relying on scrolling position before calling Scrollbar().
+    bool held = false;
+    bool hovered = false;
+    const bool previously_held = (g.ActiveId == id);
+    ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_NoNavFocus);
+
+    float scroll_max = ImMax(1.0f, win_size_contents_v - win_size_avail_v);
+    float scroll_ratio = ImSaturate(scroll_v / scroll_max);
+    float grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
+    if (held && grab_h_norm < 1.0f)
+    {
+        float scrollbar_pos_v = horizontal ? bb.Min.x : bb.Min.y;
+        float mouse_pos_v = horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
+        float* click_delta_to_grab_center_v = horizontal ? &g.ScrollbarClickDeltaToGrabCenter.x : &g.ScrollbarClickDeltaToGrabCenter.y;
+
+        // Click position in scrollbar normalized space (0.0f->1.0f)
+        const float clicked_v_norm = ImSaturate((mouse_pos_v - scrollbar_pos_v) / scrollbar_size_v);
+        SetHoveredID(id);
+
+        bool seek_absolute = false;
+        if (!previously_held)
+        {
+            // On initial click calculate the distance between mouse and the center of the grab
+            if (clicked_v_norm >= grab_v_norm && clicked_v_norm <= grab_v_norm + grab_h_norm)
+            {
+                *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
+            }
+            else
+            {
+                seek_absolute = true;
+                *click_delta_to_grab_center_v = 0.0f;
+            }
+        }
+
+        // Apply scroll
+        // It is ok to modify Scroll here because we are being called in Begin() after the calculation of SizeContents and before setting up our starting position
+        const float scroll_v_norm = ImSaturate((clicked_v_norm - *click_delta_to_grab_center_v - grab_h_norm*0.5f) / (1.0f - grab_h_norm));
+        scroll_v = (float)(int)(0.5f + scroll_v_norm * scroll_max);//(win_size_contents_v - win_size_v));
+        if (horizontal)
+            window->Scroll.x = scroll_v;
+        else
+            window->Scroll.y = scroll_v;
+
+        // Update values for rendering
+        scroll_ratio = ImSaturate(scroll_v / scroll_max);
+        grab_v_norm = scroll_ratio * (scrollbar_size_v - grab_h_pixels) / scrollbar_size_v;
+
+        // Update distance to grab now that we have seeked and saturated
+        if (seek_absolute)
+            *click_delta_to_grab_center_v = clicked_v_norm - grab_v_norm - grab_h_norm*0.5f;
+    }
+
+    // Render
+    const ImU32 grab_col = GetColorU32(held ? ImGuiCol_ScrollbarGrabActive : hovered ? ImGuiCol_ScrollbarGrabHovered : ImGuiCol_ScrollbarGrab);
+    ImRect grab_rect;
+    if (horizontal)
+        grab_rect = ImRect(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm), bb.Min.y, ImMin(ImLerp(bb.Min.x, bb.Max.x, grab_v_norm) + grab_h_pixels, window_rect.Max.x), bb.Max.y);
+    else
+        grab_rect = ImRect(bb.Min.x, ImLerp(bb.Min.y, bb.Max.y, grab_v_norm), bb.Max.x, ImMin(ImLerp(bb.Min.y, bb.Max.y, grab_v_norm) + grab_h_pixels, window_rect.Max.y));
+    window->DrawList->AddRectFilled(grab_rect.Min, grab_rect.Max, grab_col, style.ScrollbarRounding);
+}
+
+void ImGui::Image(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, const ImVec4& tint_col, const ImVec4& border_col)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return;
+
+    ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
+    if (border_col.w > 0.0f)
+        bb.Max += ImVec2(2, 2);
+    ItemSize(bb);
+    if (!ItemAdd(bb, 0))
+        return;
+
+    if (border_col.w > 0.0f)
+    {
+        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(border_col), 0.0f);
+        window->DrawList->AddImage(user_texture_id, bb.Min + ImVec2(1, 1), bb.Max - ImVec2(1, 1), uv0, uv1, GetColorU32(tint_col));
+    }
+    else
+    {
+        window->DrawList->AddImage(user_texture_id, bb.Min, bb.Max, uv0, uv1, GetColorU32(tint_col));
+    }
+}
+
+// frame_padding < 0: uses FramePadding from style (default)
+// frame_padding = 0: no framing
+// frame_padding > 0: set framing size
+// The color used are the button colors.
+bool ImGui::ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, int frame_padding, const ImVec4& bg_col, const ImVec4& tint_col)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+
+    // Default to using texture ID as ID. User can still push string/integer prefixes.
+    // We could hash the size/uv to create a unique ID but that would prevent the user from animating UV.
+    PushID((void*)user_texture_id);
+    const ImGuiID id = window->GetID("#image");
+    PopID();
+
+    const ImVec2 padding = (frame_padding >= 0) ? ImVec2((float)frame_padding, (float)frame_padding) : style.FramePadding;
+    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size + padding * 2);
+    const ImRect image_bb(window->DC.CursorPos + padding, window->DC.CursorPos + padding + size);
+    ItemSize(bb);
+    if (!ItemAdd(bb, id))
+        return false;
+
+    bool hovered, held;
+    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
+
+    // Render
+    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
+    RenderNavHighlight(bb, id);
+    RenderFrame(bb.Min, bb.Max, col, true, ImClamp((float)ImMin(padding.x, padding.y), 0.0f, style.FrameRounding));
+    if (bg_col.w > 0.0f)
+        window->DrawList->AddRectFilled(image_bb.Min, image_bb.Max, GetColorU32(bg_col));
+    window->DrawList->AddImage(user_texture_id, image_bb.Min, image_bb.Max, uv0, uv1, GetColorU32(tint_col));
+
+    return pressed;
+}
+
+bool ImGui::Checkbox(const char* label, bool* v)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+    const ImGuiID id = window->GetID(label);
+    const ImVec2 label_size = CalcTextSize(label, NULL, true);
+
+    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2, label_size.y + style.FramePadding.y*2)); // We want a square shape to we use Y twice
+    ItemSize(check_bb, style.FramePadding.y);
+
+    ImRect total_bb = check_bb;
+    if (label_size.x > 0)
+        SameLine(0, style.ItemInnerSpacing.x);
+    const ImRect text_bb(window->DC.CursorPos + ImVec2(0,style.FramePadding.y), window->DC.CursorPos + ImVec2(0,style.FramePadding.y) + label_size);
+    if (label_size.x > 0)
+    {
+        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
+        total_bb = ImRect(ImMin(check_bb.Min, text_bb.Min), ImMax(check_bb.Max, text_bb.Max));
+    }
+
+    if (!ItemAdd(total_bb, id))
+        return false;
+
+    bool hovered, held;
+    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
+    if (pressed)
+    {
+        *v = !(*v);
+        MarkItemEdited(id);
+    }
+
+    RenderNavHighlight(total_bb, id);
+    RenderFrame(check_bb.Min, check_bb.Max, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), true, style.FrameRounding);
+    if (*v)
+    {
+        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
+        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
+        RenderCheckMark(check_bb.Min + ImVec2(pad,pad), GetColorU32(ImGuiCol_CheckMark), check_bb.GetWidth() - pad*2.0f);
+    }
+
+    if (g.LogEnabled)
+        LogRenderedText(&text_bb.Min, *v ? "[x]" : "[ ]");
+    if (label_size.x > 0.0f)
+        RenderText(text_bb.Min, label);
+
+    return pressed;
+}
+
+bool ImGui::CheckboxFlags(const char* label, unsigned int* flags, unsigned int flags_value)
+{
+    bool v = ((*flags & flags_value) == flags_value);
+    bool pressed = Checkbox(label, &v);
+    if (pressed)
+    {
+        if (v)
+            *flags |= flags_value;
+        else
+            *flags &= ~flags_value;
+    }
+
+    return pressed;
+}
+
+bool ImGui::RadioButton(const char* label, bool active)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+    const ImGuiID id = window->GetID(label);
+    const ImVec2 label_size = CalcTextSize(label, NULL, true);
+
+    const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2-1, label_size.y + style.FramePadding.y*2-1));
+    ItemSize(check_bb, style.FramePadding.y);
+
+    ImRect total_bb = check_bb;
+    if (label_size.x > 0)
+        SameLine(0, style.ItemInnerSpacing.x);
+    const ImRect text_bb(window->DC.CursorPos + ImVec2(0, style.FramePadding.y), window->DC.CursorPos + ImVec2(0, style.FramePadding.y) + label_size);
+    if (label_size.x > 0)
+    {
+        ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y);
+        total_bb.Add(text_bb);
+    }
+
+    if (!ItemAdd(total_bb, id))
+        return false;
+
+    ImVec2 center = check_bb.GetCenter();
+    center.x = (float)(int)center.x + 0.5f;
+    center.y = (float)(int)center.y + 0.5f;
+    const float radius = check_bb.GetHeight() * 0.5f;
+
+    bool hovered, held;
+    bool pressed = ButtonBehavior(total_bb, id, &hovered, &held);
+    if (pressed)
+        MarkItemEdited(id);
+
+    RenderNavHighlight(total_bb, id);
+    window->DrawList->AddCircleFilled(center, radius, GetColorU32((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), 16);
+    if (active)
+    {
+        const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight());
+        const float pad = ImMax(1.0f, (float)(int)(check_sz / 6.0f));
+        window->DrawList->AddCircleFilled(center, radius-pad, GetColorU32(ImGuiCol_CheckMark), 16);
+    }
+
+    if (style.FrameBorderSize > 0.0f)
+    {
+        window->DrawList->AddCircle(center+ImVec2(1,1), radius, GetColorU32(ImGuiCol_BorderShadow), 16, style.FrameBorderSize);
+        window->DrawList->AddCircle(center, radius, GetColorU32(ImGuiCol_Border), 16, style.FrameBorderSize);
+    }
+
+    if (g.LogEnabled)
+        LogRenderedText(&text_bb.Min, active ? "(x)" : "( )");
+    if (label_size.x > 0.0f)
+        RenderText(text_bb.Min, label);
+
+    return pressed;
+}
+
+bool ImGui::RadioButton(const char* label, int* v, int v_button)
+{
+    const bool pressed = RadioButton(label, *v == v_button);
+    if (pressed)
+        *v = v_button;
+    return pressed;
+}
+
+// size_arg (for each axis) < 0.0f: align to end, 0.0f: auto, > 0.0f: specified size
+void ImGui::ProgressBar(float fraction, const ImVec2& size_arg, const char* overlay)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+
+    ImVec2 pos = window->DC.CursorPos;
+    ImRect bb(pos, pos + CalcItemSize(size_arg, CalcItemWidth(), g.FontSize + style.FramePadding.y*2.0f));
+    ItemSize(bb, style.FramePadding.y);
+    if (!ItemAdd(bb, 0))
+        return;
+
+    // Render
+    fraction = ImSaturate(fraction);
+    RenderFrame(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
+    bb.Expand(ImVec2(-style.FrameBorderSize, -style.FrameBorderSize));
+    const ImVec2 fill_br = ImVec2(ImLerp(bb.Min.x, bb.Max.x, fraction), bb.Max.y);
+    RenderRectFilledRangeH(window->DrawList, bb, GetColorU32(ImGuiCol_PlotHistogram), 0.0f, fraction, style.FrameRounding);
+
+    // Default displaying the fraction as percentage string, but user can override it
+    char overlay_buf[32];
+    if (!overlay)
+    {
+        ImFormatString(overlay_buf, IM_ARRAYSIZE(overlay_buf), "%.0f%%", fraction*100+0.01f);
+        overlay = overlay_buf;
+    }
+
+    ImVec2 overlay_size = CalcTextSize(overlay, NULL);
+    if (overlay_size.x > 0.0f)
+        RenderTextClipped(ImVec2(ImClamp(fill_br.x + style.ItemSpacing.x, bb.Min.x, bb.Max.x - overlay_size.x - style.ItemInnerSpacing.x), bb.Min.y), bb.Max, overlay, NULL, &overlay_size, ImVec2(0.0f,0.5f), &bb);
+}
+
+void ImGui::Bullet()
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+    const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
+    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize, line_height));
+    ItemSize(bb);
+    if (!ItemAdd(bb, 0))
+    {
+        SameLine(0, style.FramePadding.x*2);
+        return;
+    }
+
+    // Render and stay on same line
+    RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
+    SameLine(0, style.FramePadding.x*2);
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Combo Box
+// - BeginCombo()
+// - EndCombo()
+// - Combo()
+//-------------------------------------------------------------------------
+
+static float CalcMaxPopupHeightFromItemCount(int items_count)
+{
+    ImGuiContext& g = *GImGui;
+    if (items_count <= 0)
+        return FLT_MAX;
+    return (g.FontSize + g.Style.ItemSpacing.y) * items_count - g.Style.ItemSpacing.y + (g.Style.WindowPadding.y * 2);
+}
+
+bool ImGui::BeginCombo(const char* label, const char* preview_value, ImGuiComboFlags flags)
+{
+    // Always consume the SetNextWindowSizeConstraint() call in our early return paths
+    ImGuiContext& g = *GImGui;
+    ImGuiCond backup_next_window_size_constraint = g.NextWindowData.SizeConstraintCond;
+    g.NextWindowData.SizeConstraintCond = 0;
+
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    IM_ASSERT((flags & (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)) != (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)); // Can't use both flags together
+
+    const ImGuiStyle& style = g.Style;
+    const ImGuiID id = window->GetID(label);
+
+    const float arrow_size = (flags & ImGuiComboFlags_NoArrowButton) ? 0.0f : GetFrameHeight();
+    const ImVec2 label_size = CalcTextSize(label, NULL, true);
+    const float w = (flags & ImGuiComboFlags_NoPreview) ? arrow_size : CalcItemWidth();
+    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
+    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
+    ItemSize(total_bb, style.FramePadding.y);
+    if (!ItemAdd(total_bb, id, &frame_bb))
+        return false;
+
+    bool hovered, held;
+    bool pressed = ButtonBehavior(frame_bb, id, &hovered, &held);
+    bool popup_open = IsPopupOpen(id);
+
+    const ImRect value_bb(frame_bb.Min, frame_bb.Max - ImVec2(arrow_size, 0.0f));
+    const ImU32 frame_col = GetColorU32(hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
+    RenderNavHighlight(frame_bb, id);
+    if (!(flags & ImGuiComboFlags_NoPreview))
+        window->DrawList->AddRectFilled(frame_bb.Min, ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Max.y), frame_col, style.FrameRounding, ImDrawCornerFlags_Left);
+    if (!(flags & ImGuiComboFlags_NoArrowButton))
+    {
+        window->DrawList->AddRectFilled(ImVec2(frame_bb.Max.x - arrow_size, frame_bb.Min.y), frame_bb.Max, GetColorU32((popup_open || hovered) ? ImGuiCol_ButtonHovered : ImGuiCol_Button), style.FrameRounding, (w <= arrow_size) ? ImDrawCornerFlags_All : ImDrawCornerFlags_Right);
+        RenderArrow(ImVec2(frame_bb.Max.x - arrow_size + style.FramePadding.y, frame_bb.Min.y + style.FramePadding.y), ImGuiDir_Down);
+    }
+    RenderFrameBorder(frame_bb.Min, frame_bb.Max, style.FrameRounding);
+    if (preview_value != NULL && !(flags & ImGuiComboFlags_NoPreview))
+        RenderTextClipped(frame_bb.Min + style.FramePadding, value_bb.Max, preview_value, NULL, NULL, ImVec2(0.0f,0.0f));
+    if (label_size.x > 0)
+        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
+
+    if ((pressed || g.NavActivateId == id) && !popup_open)
+    {
+        if (window->DC.NavLayerCurrent == 0)
+            window->NavLastIds[0] = id;
+        OpenPopupEx(id);
+        popup_open = true;
+    }
+
+    if (!popup_open)
+        return false;
+
+    if (backup_next_window_size_constraint)
+    {
+        g.NextWindowData.SizeConstraintCond = backup_next_window_size_constraint;
+        g.NextWindowData.SizeConstraintRect.Min.x = ImMax(g.NextWindowData.SizeConstraintRect.Min.x, w);
+    }
+    else
+    {
+        if ((flags & ImGuiComboFlags_HeightMask_) == 0)
+            flags |= ImGuiComboFlags_HeightRegular;
+        IM_ASSERT(ImIsPowerOfTwo(flags & ImGuiComboFlags_HeightMask_));    // Only one
+        int popup_max_height_in_items = -1;
+        if (flags & ImGuiComboFlags_HeightRegular)     popup_max_height_in_items = 8;
+        else if (flags & ImGuiComboFlags_HeightSmall)  popup_max_height_in_items = 4;
+        else if (flags & ImGuiComboFlags_HeightLarge)  popup_max_height_in_items = 20;
+        SetNextWindowSizeConstraints(ImVec2(w, 0.0f), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
+    }
+
+    char name[16];
+    ImFormatString(name, IM_ARRAYSIZE(name), "##Combo_%02d", g.CurrentPopupStack.Size); // Recycle windows based on depth
+
+    // Peak into expected window size so we can position it
+    if (ImGuiWindow* popup_window = FindWindowByName(name))
+        if (popup_window->WasActive)
+        {
+            ImVec2 size_expected = CalcWindowExpectedSize(popup_window);
+            if (flags & ImGuiComboFlags_PopupAlignLeft)
+                popup_window->AutoPosLastDirection = ImGuiDir_Left;
+            ImRect r_outer = GetWindowAllowedExtentRect(popup_window);
+            ImVec2 pos = FindBestWindowPosForPopupEx(frame_bb.GetBL(), size_expected, &popup_window->AutoPosLastDirection, r_outer, frame_bb, ImGuiPopupPositionPolicy_ComboBox);
+            SetNextWindowPos(pos);
+        }
+
+    // Horizontally align ourselves with the framed text
+    ImGuiWindowFlags window_flags = ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_Popup | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoSavedSettings;
+    PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(style.FramePadding.x, style.WindowPadding.y));
+    bool ret = Begin(name, NULL, window_flags);
+    PopStyleVar();
+    if (!ret)
+    {
+        EndPopup();
+        IM_ASSERT(0);   // This should never happen as we tested for IsPopupOpen() above
+        return false;
+    }
+    return true;
+}
+
+void ImGui::EndCombo()
+{
+    EndPopup();
+}
+
+// Getter for the old Combo() API: const char*[]
+static bool Items_ArrayGetter(void* data, int idx, const char** out_text)
+{
+    const char* const* items = (const char* const*)data;
+    if (out_text)
+        *out_text = items[idx];
+    return true;
+}
+
+// Getter for the old Combo() API: "item1\0item2\0item3\0"
+static bool Items_SingleStringGetter(void* data, int idx, const char** out_text)
+{
+    // FIXME-OPT: we could pre-compute the indices to fasten this. But only 1 active combo means the waste is limited.
+    const char* items_separated_by_zeros = (const char*)data;
+    int items_count = 0;
+    const char* p = items_separated_by_zeros;
+    while (*p)
+    {
+        if (idx == items_count)
+            break;
+        p += strlen(p) + 1;
+        items_count++;
+    }
+    if (!*p)
+        return false;
+    if (out_text)
+        *out_text = p;
+    return true;
+}
+
+// Old API, prefer using BeginCombo() nowadays if you can.
+bool ImGui::Combo(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int popup_max_height_in_items)
+{
+    ImGuiContext& g = *GImGui;
+
+    // Call the getter to obtain the preview string which is a parameter to BeginCombo()
+    const char* preview_value = NULL;
+    if (*current_item >= 0 && *current_item < items_count)
+        items_getter(data, *current_item, &preview_value);
+
+    // The old Combo() API exposed "popup_max_height_in_items". The new more general BeginCombo() API doesn't have/need it, but we emulate it here.
+    if (popup_max_height_in_items != -1 && !g.NextWindowData.SizeConstraintCond)
+        SetNextWindowSizeConstraints(ImVec2(0,0), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
+
+    if (!BeginCombo(label, preview_value, ImGuiComboFlags_None))
+        return false;
+
+    // Display items
+    // FIXME-OPT: Use clipper (but we need to disable it on the appearing frame to make sure our call to SetItemDefaultFocus() is processed)
+    bool value_changed = false;
+    for (int i = 0; i < items_count; i++)
+    {
+        PushID((void*)(intptr_t)i);
+        const bool item_selected = (i == *current_item);
+        const char* item_text;
+        if (!items_getter(data, i, &item_text))
+            item_text = "*Unknown item*";
+        if (Selectable(item_text, item_selected))
+        {
+            value_changed = true;
+            *current_item = i;
+        }
+        if (item_selected)
+            SetItemDefaultFocus();
+        PopID();
+    }
+
+    EndCombo();
+    return value_changed;
+}
+
+// Combo box helper allowing to pass an array of strings.
+bool ImGui::Combo(const char* label, int* current_item, const char* const items[], int items_count, int height_in_items)
+{
+    const bool value_changed = Combo(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_in_items);
+    return value_changed;
+}
+
+// Combo box helper allowing to pass all items in a single string literal holding multiple zero-terminated items "item1\0item2\0" 
+bool ImGui::Combo(const char* label, int* current_item, const char* items_separated_by_zeros, int height_in_items)
+{
+    int items_count = 0;
+    const char* p = items_separated_by_zeros;       // FIXME-OPT: Avoid computing this, or at least only when combo is open
+    while (*p)
+    {
+        p += strlen(p) + 1;
+        items_count++;
+    }
+    bool value_changed = Combo(label, current_item, Items_SingleStringGetter, (void*)items_separated_by_zeros, items_count, height_in_items);
+    return value_changed;
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Data Type and Data Formatting Helpers [Internal]
+// - PatchFormatStringFloatToInt()
+// - DataTypeFormatString()
+// - DataTypeApplyOp()
+// - DataTypeApplyOpFromText()
+// - GetMinimumStepAtDecimalPrecision
+// - RoundScalarWithFormat<>()
+//-------------------------------------------------------------------------
+
+struct ImGuiDataTypeInfo
+{
+    size_t      Size;
+    const char* PrintFmt;   // Unused
+    const char* ScanFmt;
+};
+
+static const ImGuiDataTypeInfo GDataTypeInfo[] =
+{
+    { sizeof(int),          "%d",   "%d"    },
+    { sizeof(unsigned int), "%u",   "%u"    },
+#ifdef _MSC_VER
+    { sizeof(ImS64),        "%I64d","%I64d" },
+    { sizeof(ImU64),        "%I64u","%I64u" },
+#else
+    { sizeof(ImS64),        "%lld", "%lld"  },
+    { sizeof(ImU64),        "%llu", "%llu"  },
+#endif
+    { sizeof(float),        "%f",   "%f"    },  // float are promoted to double in va_arg
+    { sizeof(double),       "%f",   "%lf"   },
+};
+IM_STATIC_ASSERT(IM_ARRAYSIZE(GDataTypeInfo) == ImGuiDataType_COUNT);
+
+// FIXME-LEGACY: Prior to 1.61 our DragInt() function internally used floats and because of this the compile-time default value for format was "%.0f".
+// Even though we changed the compile-time default, we expect users to have carried %f around, which would break the display of DragInt() calls.
+// To honor backward compatibility we are rewriting the format string, unless IMGUI_DISABLE_OBSOLETE_FUNCTIONS is enabled. What could possibly go wrong?!
+static const char* PatchFormatStringFloatToInt(const char* fmt)
+{
+    if (fmt[0] == '%' && fmt[1] == '.' && fmt[2] == '0' && fmt[3] == 'f' && fmt[4] == 0) // Fast legacy path for "%.0f" which is expected to be the most common case.
+        return "%d";
+    const char* fmt_start = ImParseFormatFindStart(fmt);    // Find % (if any, and ignore %%)
+    const char* fmt_end = ImParseFormatFindEnd(fmt_start);  // Find end of format specifier, which itself is an exercise of confidence/recklessness (because snprintf is dependent on libc or user).
+    if (fmt_end > fmt_start && fmt_end[-1] == 'f')
+    {
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+        if (fmt_start == fmt && fmt_end[0] == 0)
+            return "%d";
+        ImGuiContext& g = *GImGui;
+        ImFormatString(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), "%.*s%%d%s", (int)(fmt_start - fmt), fmt, fmt_end); // Honor leading and trailing decorations, but lose alignment/precision.
+        return g.TempBuffer;
+#else
+        IM_ASSERT(0 && "DragInt(): Invalid format string!"); // Old versions used a default parameter of "%.0f", please replace with e.g. "%d"
+#endif
+    }
+    return fmt;
+}
+
+static inline int DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format)
+{
+    if (data_type == ImGuiDataType_S32 || data_type == ImGuiDataType_U32)   // Signedness doesn't matter when pushing the argument
+        return ImFormatString(buf, buf_size, format, *(const ImU32*)data_ptr);
+    if (data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)   // Signedness doesn't matter when pushing the argument
+        return ImFormatString(buf, buf_size, format, *(const ImU64*)data_ptr);
+    if (data_type == ImGuiDataType_Float)
+        return ImFormatString(buf, buf_size, format, *(const float*)data_ptr);
+    if (data_type == ImGuiDataType_Double)
+        return ImFormatString(buf, buf_size, format, *(const double*)data_ptr);
+    IM_ASSERT(0);
+    return 0;
+}
+
+// FIXME: Adding support for clamping on boundaries of the data type would be nice.
+static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg1, const void* arg2)
+{
+    IM_ASSERT(op == '+' || op == '-');
+    switch (data_type)
+    {
+        case ImGuiDataType_S32:
+            if (op == '+')      *(int*)output = *(const int*)arg1 + *(const int*)arg2;
+            else if (op == '-') *(int*)output = *(const int*)arg1 - *(const int*)arg2;
+            return;
+        case ImGuiDataType_U32:
+            if (op == '+')      *(unsigned int*)output = *(const unsigned int*)arg1 + *(const ImU32*)arg2;
+            else if (op == '-') *(unsigned int*)output = *(const unsigned int*)arg1 - *(const ImU32*)arg2;
+            return;
+        case ImGuiDataType_S64:
+            if (op == '+')      *(ImS64*)output = *(const ImS64*)arg1 + *(const ImS64*)arg2;
+            else if (op == '-') *(ImS64*)output = *(const ImS64*)arg1 - *(const ImS64*)arg2;
+            return;
+        case ImGuiDataType_U64:
+            if (op == '+')      *(ImU64*)output = *(const ImU64*)arg1 + *(const ImU64*)arg2;
+            else if (op == '-') *(ImU64*)output = *(const ImU64*)arg1 - *(const ImU64*)arg2;
+            return;
+        case ImGuiDataType_Float:
+            if (op == '+')      *(float*)output = *(const float*)arg1 + *(const float*)arg2;
+            else if (op == '-') *(float*)output = *(const float*)arg1 - *(const float*)arg2;
+            return;
+        case ImGuiDataType_Double:
+            if (op == '+')      *(double*)output = *(const double*)arg1 + *(const double*)arg2;
+            else if (op == '-') *(double*)output = *(const double*)arg1 - *(const double*)arg2;
+            return;
+        case ImGuiDataType_COUNT: break;
+    }
+    IM_ASSERT(0);
+}
+
+// User can input math operators (e.g. +100) to edit a numerical values.
+// NB: This is _not_ a full expression evaluator. We should probably add one and replace this dumb mess..
+static bool DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format)
+{
+    while (ImCharIsBlankA(*buf))
+        buf++;
+
+    // We don't support '-' op because it would conflict with inputing negative value.
+    // Instead you can use +-100 to subtract from an existing value
+    char op = buf[0];
+    if (op == '+' || op == '*' || op == '/')
+    {
+        buf++;
+        while (ImCharIsBlankA(*buf))
+            buf++;
+    }
+    else
+    {
+        op = 0;
+    }
+    if (!buf[0])
+        return false;
+
+    // Copy the value in an opaque buffer so we can compare at the end of the function if it changed at all.
+    IM_ASSERT(data_type < ImGuiDataType_COUNT);
+    int data_backup[2];
+    IM_ASSERT(GDataTypeInfo[data_type].Size <= sizeof(data_backup));
+    memcpy(data_backup, data_ptr, GDataTypeInfo[data_type].Size);
+
+    if (format == NULL)
+        format = GDataTypeInfo[data_type].ScanFmt;
+
+    int arg1i = 0;
+    if (data_type == ImGuiDataType_S32)
+    {
+        int* v = (int*)data_ptr;
+        int arg0i = *v;
+        float arg1f = 0.0f;
+        if (op && sscanf(initial_value_buf, format, &arg0i) < 1)
+            return false;
+        // Store operand in a float so we can use fractional value for multipliers (*1.1), but constant always parsed as integer so we can fit big integers (e.g. 2000000003) past float precision
+        if (op == '+')      { if (sscanf(buf, "%d", &arg1i)) *v = (int)(arg0i + arg1i); }                   // Add (use "+-" to subtract)
+        else if (op == '*') { if (sscanf(buf, "%f", &arg1f)) *v = (int)(arg0i * arg1f); }                   // Multiply
+        else if (op == '/') { if (sscanf(buf, "%f", &arg1f) && arg1f != 0.0f) *v = (int)(arg0i / arg1f); }  // Divide
+        else                { if (sscanf(buf, format, &arg1i) == 1) *v = arg1i; }                           // Assign constant
+    }
+    else if (data_type == ImGuiDataType_U32 || data_type == ImGuiDataType_S64 || data_type == ImGuiDataType_U64)
+    {
+        // Assign constant
+        // FIXME: We don't bother handling support for legacy operators since they are a little too crappy. Instead we may implement a proper expression evaluator in the future.
+        sscanf(buf, format, data_ptr);
+    }
+    else if (data_type == ImGuiDataType_Float)
+    {
+        // For floats we have to ignore format with precision (e.g. "%.2f") because sscanf doesn't take them in
+        format = "%f";
+        float* v = (float*)data_ptr;
+        float arg0f = *v, arg1f = 0.0f;
+        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
+            return false;
+        if (sscanf(buf, format, &arg1f) < 1)
+            return false;
+        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
+        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
+        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
+        else                { *v = arg1f; }                            // Assign constant
+    }
+    else if (data_type == ImGuiDataType_Double)
+    {
+        format = "%lf"; // scanf differentiate float/double unlike printf which forces everything to double because of ellipsis
+        double* v = (double*)data_ptr;
+        double arg0f = *v, arg1f = 0.0;
+        if (op && sscanf(initial_value_buf, format, &arg0f) < 1)
+            return false;
+        if (sscanf(buf, format, &arg1f) < 1)
+            return false;
+        if (op == '+')      { *v = arg0f + arg1f; }                    // Add (use "+-" to subtract)
+        else if (op == '*') { *v = arg0f * arg1f; }                    // Multiply
+        else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
+        else                { *v = arg1f; }                            // Assign constant
+    }
+    return memcmp(data_backup, data_ptr, GDataTypeInfo[data_type].Size) != 0;
+}
+
+static float GetMinimumStepAtDecimalPrecision(int decimal_precision)
+{
+    static const float min_steps[10] = { 1.0f, 0.1f, 0.01f, 0.001f, 0.0001f, 0.00001f, 0.000001f, 0.0000001f, 0.00000001f, 0.000000001f };
+    if (decimal_precision < 0)
+        return FLT_MIN;
+    return (decimal_precision >= 0 && decimal_precision < 10) ? min_steps[decimal_precision] : ImPow(10.0f, (float)-decimal_precision);
+}
+
+template<typename TYPE>
+static const char* ImAtoi(const char* src, TYPE* output)
+{
+    int negative = 0;
+    if (*src == '-') { negative = 1; src++; }
+    if (*src == '+') { src++; }
+    TYPE v = 0;
+    while (*src >= '0' && *src <= '9')
+        v = (v * 10) + (*src++ - '0');
+    *output = negative ? -v : v;
+    return src;
+}
+
+template<typename TYPE, typename SIGNEDTYPE>
+static inline TYPE RoundScalarWithFormat(const char* format, ImGuiDataType data_type, TYPE v)
+{
+    const char* fmt_start = ImParseFormatFindStart(format);
+    if (fmt_start[0] != '%' || fmt_start[1] == '%') // Don't apply if the value is not visible in the format string
+        return v;
+    char v_str[64];
+    ImFormatString(v_str, IM_ARRAYSIZE(v_str), fmt_start, v);
+    const char* p = v_str;
+    while (*p == ' ')
+        p++;
+    if (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double)
+        v = (TYPE)ImAtof(p);
+    else
+        ImAtoi(p, (SIGNEDTYPE*)&v);
+    return v;
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Drags
+// - DragBehaviorT<>() [Internal]
+// - DragBehavior() [Internal]
+// - DragScalar()
+// - DragScalarN()
+// - DragFloat()
+// - DragFloat2()
+// - DragFloat3()
+// - DragFloat4()
+// - DragFloatRange2()
+// - DragInt()
+// - DragInt2()
+// - DragInt3()
+// - DragInt4()
+// - DragIntRange2()
+//-------------------------------------------------------------------------
+
+// This is called by DragBehavior() when the widget is active (held by mouse or being manipulated with Nav controls)
+template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
+static bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power)
+{
+    ImGuiContext& g = *GImGui;
+
+    // Default tweak speed
+    bool has_min_max = (v_min != v_max) && (v_max - v_max < FLT_MAX);
+    if (v_speed == 0.0f && has_min_max)
+        v_speed = (float)((v_max - v_min) * g.DragSpeedDefaultRatio);
+
+    // Inputs accumulates into g.DragCurrentAccum, which is flushed into the current value as soon as it makes a difference with our precision settings
+    float adjust_delta = 0.0f;
+    if (g.ActiveIdSource == ImGuiInputSource_Mouse && IsMousePosValid() && g.IO.MouseDragMaxDistanceSqr[0] > 1.0f*1.0f)
+    {
+        adjust_delta = g.IO.MouseDelta.x;
+        if (g.IO.KeyAlt)
+            adjust_delta *= 1.0f/100.0f;
+        if (g.IO.KeyShift)
+            adjust_delta *= 10.0f;
+    }
+    else if (g.ActiveIdSource == ImGuiInputSource_Nav)
+    {
+        int decimal_precision = (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImParseFormatPrecision(format, 3) : 0;
+        adjust_delta = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard|ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 1.0f/10.0f, 10.0f).x;
+        v_speed = ImMax(v_speed, GetMinimumStepAtDecimalPrecision(decimal_precision));
+    }
+    adjust_delta *= v_speed;
+
+    // Clear current value on activation
+    // Avoid altering values and clamping when we are _already_ past the limits and heading in the same direction, so e.g. if range is 0..255, current value is 300 and we are pushing to the right side, keep the 300.
+    bool is_just_activated = g.ActiveIdIsJustActivated;
+    bool is_already_past_limits_and_pushing_outward = has_min_max && ((*v >= v_max && adjust_delta > 0.0f) || (*v <= v_min && adjust_delta < 0.0f));
+    if (is_just_activated || is_already_past_limits_and_pushing_outward)
+    {
+        g.DragCurrentAccum = 0.0f;
+        g.DragCurrentAccumDirty = false;
+    }
+    else if (adjust_delta != 0.0f)
+    {
+        g.DragCurrentAccum += adjust_delta;
+        g.DragCurrentAccumDirty = true;
+    }
+
+    if (!g.DragCurrentAccumDirty)
+        return false;
+
+    TYPE v_cur = *v;
+    FLOATTYPE v_old_ref_for_accum_remainder = (FLOATTYPE)0.0f;
+
+    const bool is_power = (power != 1.0f && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) && has_min_max);
+    if (is_power)
+    {
+        // Offset + round to user desired precision, with a curve on the v_min..v_max range to get more precision on one side of the range
+        FLOATTYPE v_old_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
+        FLOATTYPE v_new_norm_curved = v_old_norm_curved + (g.DragCurrentAccum / (v_max - v_min));
+        v_cur = v_min + (TYPE)ImPow(ImSaturate((float)v_new_norm_curved), power) * (v_max - v_min);
+        v_old_ref_for_accum_remainder = v_old_norm_curved;
+    }
+    else
+    {
+        v_cur += (TYPE)g.DragCurrentAccum;
+    }
+
+    // Round to user desired precision based on format string
+    v_cur = RoundScalarWithFormat<TYPE, SIGNEDTYPE>(format, data_type, v_cur);
+
+    // Preserve remainder after rounding has been applied. This also allow slow tweaking of values.
+    g.DragCurrentAccumDirty = false;
+    if (is_power)
+    {
+        FLOATTYPE v_cur_norm_curved = ImPow((FLOATTYPE)(v_cur - v_min) / (FLOATTYPE)(v_max - v_min), (FLOATTYPE)1.0f / power);
+        g.DragCurrentAccum -= (float)(v_cur_norm_curved - v_old_ref_for_accum_remainder);
+    }
+    else
+    {
+        g.DragCurrentAccum -= (float)((SIGNEDTYPE)v_cur - (SIGNEDTYPE)*v);
+    }
+
+    // Lose zero sign for float/double
+    if (v_cur == (TYPE)-0)
+        v_cur = (TYPE)0;
+
+    // Clamp values (handle overflow/wrap-around)
+    if (*v != v_cur && has_min_max)
+    {
+        if (v_cur < v_min || (v_cur > *v && adjust_delta < 0.0f))
+            v_cur = v_min;
+        if (v_cur > v_max || (v_cur < *v && adjust_delta > 0.0f))
+            v_cur = v_max;
+    }
+
+    // Apply result
+    if (*v == v_cur)
+        return false;
+    *v = v_cur;
+    return true;
+}
+
+bool ImGui::DragBehavior(ImGuiID id, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.ActiveId == id)
+    {
+        if (g.ActiveIdSource == ImGuiInputSource_Mouse && !g.IO.MouseDown[0])
+            ClearActiveID();
+        else if (g.ActiveIdSource == ImGuiInputSource_Nav && g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
+            ClearActiveID();
+    }
+    if (g.ActiveId != id)
+        return false;
+
+    switch (data_type)
+    {
+    case ImGuiDataType_S32:    return DragBehaviorT<ImS32, ImS32, float >(data_type, (ImS32*)v,  v_speed, v_min ? *(const ImS32* )v_min : IM_S32_MIN, v_max ? *(const ImS32* )v_max : IM_S32_MAX, format, power);
+    case ImGuiDataType_U32:    return DragBehaviorT<ImU32, ImS32, float >(data_type, (ImU32*)v,  v_speed, v_min ? *(const ImU32* )v_min : IM_U32_MIN, v_max ? *(const ImU32* )v_max : IM_U32_MAX, format, power);
+    case ImGuiDataType_S64:    return DragBehaviorT<ImS64, ImS64, double>(data_type, (ImS64*)v,  v_speed, v_min ? *(const ImS64* )v_min : IM_S64_MIN, v_max ? *(const ImS64* )v_max : IM_S64_MAX, format, power);
+    case ImGuiDataType_U64:    return DragBehaviorT<ImU64, ImS64, double>(data_type, (ImU64*)v,  v_speed, v_min ? *(const ImU64* )v_min : IM_U64_MIN, v_max ? *(const ImU64* )v_max : IM_U64_MAX, format, power);
+    case ImGuiDataType_Float:  return DragBehaviorT<float, float, float >(data_type, (float*)v,  v_speed, v_min ? *(const float* )v_min : -FLT_MAX,   v_max ? *(const float* )v_max : FLT_MAX,    format, power);
+    case ImGuiDataType_Double: return DragBehaviorT<double,double,double>(data_type, (double*)v, v_speed, v_min ? *(const double*)v_min : -DBL_MAX,   v_max ? *(const double*)v_max : DBL_MAX,    format, power);
+    case ImGuiDataType_COUNT:  break;
+    }
+    IM_ASSERT(0);
+    return false;
+}
+
+bool ImGui::DragScalar(const char* label, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    if (power != 1.0f)
+        IM_ASSERT(v_min != NULL && v_max != NULL); // When using a power curve the drag needs to have known bounds
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+    const ImGuiID id = window->GetID(label);
+    const float w = CalcItemWidth();
+
+    const ImVec2 label_size = CalcTextSize(label, NULL, true);
+    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
+    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
+    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
+
+    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
+    if (!ItemAdd(total_bb, id, &frame_bb))
+    {
+        ItemSize(total_bb, style.FramePadding.y);
+        return false;
+    }
+    const bool hovered = ItemHoverable(frame_bb, id);
+
+    // Default format string when passing NULL
+    // Patch old "%.0f" format string to use "%d", read function comments for more details.
+    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
+    if (format == NULL)
+        format = GDataTypeInfo[data_type].PrintFmt;
+    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
+        format = PatchFormatStringFloatToInt(format);
+
+    // Tabbing or CTRL-clicking on Drag turns it into an input box
+    bool start_text_input = false;
+    const bool tab_focus_requested = FocusableItemRegister(window, id);
+    if (tab_focus_requested || (hovered && (g.IO.MouseClicked[0] || g.IO.MouseDoubleClicked[0])) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
+    {
+        SetActiveID(id, window);
+        SetFocusID(id, window);
+        FocusWindow(window);
+        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
+        if (tab_focus_requested || g.IO.KeyCtrl || g.IO.MouseDoubleClicked[0] || g.NavInputId == id)
+        {
+            start_text_input = true;
+            g.ScalarAsInputTextId = 0;
+        }
+    }
+    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
+        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
+
+    // Actual drag behavior
+    ItemSize(total_bb, style.FramePadding.y);
+    const bool value_changed = DragBehavior(id, data_type, v, v_speed, v_min, v_max, format, power);
+    if (value_changed)
+        MarkItemEdited(id);
+
+    // Draw frame
+    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
+    RenderNavHighlight(frame_bb, id);
+    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, style.FrameRounding);
+
+    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
+    char value_buf[64];
+    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
+    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f, 0.5f));
+
+    if (label_size.x > 0.0f)
+        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
+
+    return value_changed;
+}
+
+bool ImGui::DragScalarN(const char* label, ImGuiDataType data_type, void* v, int components, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    bool value_changed = false;
+    BeginGroup();
+    PushID(label);
+    PushMultiItemsWidths(components);
+    size_t type_size = GDataTypeInfo[data_type].Size;
+    for (int i = 0; i < components; i++)
+    {
+        PushID(i);
+        value_changed |= DragScalar("##v", data_type, v, v_speed, v_min, v_max, format, power);
+        SameLine(0, g.Style.ItemInnerSpacing.x);
+        PopID();
+        PopItemWidth();
+        v = (void*)((char*)v + type_size);
+    }
+    PopID();
+
+    TextUnformatted(label, FindRenderedTextEnd(label));
+    EndGroup();
+    return value_changed;
+}
+
+bool ImGui::DragFloat(const char* label, float* v, float v_speed, float v_min, float v_max, const char* format, float power)
+{
+    return DragScalar(label, ImGuiDataType_Float, v, v_speed, &v_min, &v_max, format, power);
+}
+
+bool ImGui::DragFloat2(const char* label, float v[2], float v_speed, float v_min, float v_max, const char* format, float power)
+{
+    return DragScalarN(label, ImGuiDataType_Float, v, 2, v_speed, &v_min, &v_max, format, power);
+}
+
+bool ImGui::DragFloat3(const char* label, float v[3], float v_speed, float v_min, float v_max, const char* format, float power)
+{
+    return DragScalarN(label, ImGuiDataType_Float, v, 3, v_speed, &v_min, &v_max, format, power);
+}
+
+bool ImGui::DragFloat4(const char* label, float v[4], float v_speed, float v_min, float v_max, const char* format, float power)
+{
+    return DragScalarN(label, ImGuiDataType_Float, v, 4, v_speed, &v_min, &v_max, format, power);
+}
+
+bool ImGui::DragFloatRange2(const char* label, float* v_current_min, float* v_current_max, float v_speed, float v_min, float v_max, const char* format, const char* format_max, float power)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    PushID(label);
+    BeginGroup();
+    PushMultiItemsWidths(2);
+
+    bool value_changed = DragFloat("##min", v_current_min, v_speed, (v_min >= v_max) ? -FLT_MAX : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format, power);
+    PopItemWidth();
+    SameLine(0, g.Style.ItemInnerSpacing.x);
+    value_changed |= DragFloat("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? FLT_MAX : v_max, format_max ? format_max : format, power);
+    PopItemWidth();
+    SameLine(0, g.Style.ItemInnerSpacing.x);
+
+    TextUnformatted(label, FindRenderedTextEnd(label));
+    EndGroup();
+    PopID();
+    return value_changed;
+}
+
+// NB: v_speed is float to allow adjusting the drag speed with more precision
+bool ImGui::DragInt(const char* label, int* v, float v_speed, int v_min, int v_max, const char* format)
+{
+    return DragScalar(label, ImGuiDataType_S32, v, v_speed, &v_min, &v_max, format);
+}
+
+bool ImGui::DragInt2(const char* label, int v[2], float v_speed, int v_min, int v_max, const char* format)
+{
+    return DragScalarN(label, ImGuiDataType_S32, v, 2, v_speed, &v_min, &v_max, format);
+}
+
+bool ImGui::DragInt3(const char* label, int v[3], float v_speed, int v_min, int v_max, const char* format)
+{
+    return DragScalarN(label, ImGuiDataType_S32, v, 3, v_speed, &v_min, &v_max, format);
+}
+
+bool ImGui::DragInt4(const char* label, int v[4], float v_speed, int v_min, int v_max, const char* format)
+{
+    return DragScalarN(label, ImGuiDataType_S32, v, 4, v_speed, &v_min, &v_max, format);
+}
+
+bool ImGui::DragIntRange2(const char* label, int* v_current_min, int* v_current_max, float v_speed, int v_min, int v_max, const char* format, const char* format_max)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    PushID(label);
+    BeginGroup();
+    PushMultiItemsWidths(2);
+
+    bool value_changed = DragInt("##min", v_current_min, v_speed, (v_min >= v_max) ? INT_MIN : v_min, (v_min >= v_max) ? *v_current_max : ImMin(v_max, *v_current_max), format);
+    PopItemWidth();
+    SameLine(0, g.Style.ItemInnerSpacing.x);
+    value_changed |= DragInt("##max", v_current_max, v_speed, (v_min >= v_max) ? *v_current_min : ImMax(v_min, *v_current_min), (v_min >= v_max) ? INT_MAX : v_max, format_max ? format_max : format);
+    PopItemWidth();
+    SameLine(0, g.Style.ItemInnerSpacing.x);
+
+    TextUnformatted(label, FindRenderedTextEnd(label));
+    EndGroup();
+    PopID();
+
+    return value_changed;
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Sliders
+// - SliderBehaviorT<>() [Internal]
+// - SliderBehavior() [Internal]
+// - SliderScalar()
+// - SliderScalarN()
+// - SliderFloat()
+// - SliderFloat2()
+// - SliderFloat3()
+// - SliderFloat4()
+// - SliderAngle()
+// - SliderInt()
+// - SliderInt2()
+// - SliderInt3()
+// - SliderInt4()
+// - VSliderScalar()
+// - VSliderFloat()
+// - VSliderInt()
+//-------------------------------------------------------------------------
+
+template<typename TYPE, typename FLOATTYPE>
+static inline float SliderBehaviorCalcRatioFromValue(ImGuiDataType data_type, TYPE v, TYPE v_min, TYPE v_max, float power, float linear_zero_pos)
+{
+    if (v_min == v_max)
+        return 0.0f;
+
+    const bool is_power = (power != 1.0f) && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double);
+    const TYPE v_clamped = (v_min < v_max) ? ImClamp(v, v_min, v_max) : ImClamp(v, v_max, v_min);
+    if (is_power)
+    {
+        if (v_clamped < 0.0f)
+        {
+            const float f = 1.0f - (float)((v_clamped - v_min) / (ImMin((TYPE)0, v_max) - v_min));
+            return (1.0f - ImPow(f, 1.0f/power)) * linear_zero_pos;
+        }
+        else
+        {
+            const float f = (float)((v_clamped - ImMax((TYPE)0, v_min)) / (v_max - ImMax((TYPE)0, v_min)));
+            return linear_zero_pos + ImPow(f, 1.0f/power) * (1.0f - linear_zero_pos);
+        }
+    }
+
+    // Linear slider
+    return (float)((FLOATTYPE)(v_clamped - v_min) / (FLOATTYPE)(v_max - v_min));
+}
+
+// FIXME: Move some of the code into SliderBehavior(). Current responsability is larger than what the equivalent DragBehaviorT<> does, we also do some rendering, etc.
+template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
+static bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
+{
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+
+    const bool is_horizontal = (flags & ImGuiSliderFlags_Vertical) == 0;
+    const bool is_decimal = (data_type == ImGuiDataType_Float) || (data_type == ImGuiDataType_Double);
+    const bool is_power = (power != 1.0f) && is_decimal;
+
+    const float grab_padding = 2.0f;
+    const float slider_sz = is_horizontal ? (bb.GetWidth() - grab_padding * 2.0f) : (bb.GetHeight() - grab_padding * 2.0f);
+    float grab_sz = style.GrabMinSize;
+    SIGNEDTYPE v_range = (v_min < v_max ? v_max - v_min : v_min - v_max);
+    if (!is_decimal && v_range >= 0)                                             // v_range < 0 may happen on integer overflows
+        grab_sz = ImMax((float)(slider_sz / (v_range + 1)), style.GrabMinSize);  // For integer sliders: if possible have the grab size represent 1 unit
+    grab_sz = ImMin(grab_sz, slider_sz);
+    const float slider_usable_sz = slider_sz - grab_sz;
+    const float slider_usable_pos_min = (is_horizontal ? bb.Min.x : bb.Min.y) + grab_padding + grab_sz*0.5f;
+    const float slider_usable_pos_max = (is_horizontal ? bb.Max.x : bb.Max.y) - grab_padding - grab_sz*0.5f;
+
+    // For power curve sliders that cross over sign boundary we want the curve to be symmetric around 0.0f
+    float linear_zero_pos;   // 0.0->1.0f
+    if (is_power && v_min * v_max < 0.0f)
+    {
+        // Different sign
+        const FLOATTYPE linear_dist_min_to_0 = ImPow(v_min >= 0 ? (FLOATTYPE)v_min : -(FLOATTYPE)v_min, (FLOATTYPE)1.0f/power);
+        const FLOATTYPE linear_dist_max_to_0 = ImPow(v_max >= 0 ? (FLOATTYPE)v_max : -(FLOATTYPE)v_max, (FLOATTYPE)1.0f/power);
+        linear_zero_pos = (float)(linear_dist_min_to_0 / (linear_dist_min_to_0 + linear_dist_max_to_0));
+    }
+    else
+    {
+        // Same sign
+        linear_zero_pos = v_min < 0.0f ? 1.0f : 0.0f;
+    }
+
+    // Process interacting with the slider
+    bool value_changed = false;
+    if (g.ActiveId == id)
+    {
+        bool set_new_value = false;
+        float clicked_t = 0.0f;
+        if (g.ActiveIdSource == ImGuiInputSource_Mouse)
+        {
+            if (!g.IO.MouseDown[0])
+            {
+                ClearActiveID();
+            }
+            else
+            {
+                const float mouse_abs_pos = is_horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
+                clicked_t = (slider_usable_sz > 0.0f) ? ImClamp((mouse_abs_pos - slider_usable_pos_min) / slider_usable_sz, 0.0f, 1.0f) : 0.0f;
+                if (!is_horizontal)
+                    clicked_t = 1.0f - clicked_t;
+                set_new_value = true;
+            }
+        }
+        else if (g.ActiveIdSource == ImGuiInputSource_Nav)
+        {
+            const ImVec2 delta2 = GetNavInputAmount2d(ImGuiNavDirSourceFlags_Keyboard | ImGuiNavDirSourceFlags_PadDPad, ImGuiInputReadMode_RepeatFast, 0.0f, 0.0f);
+            float delta = is_horizontal ? delta2.x : -delta2.y;
+            if (g.NavActivatePressedId == id && !g.ActiveIdIsJustActivated)
+            {
+                ClearActiveID();
+            }
+            else if (delta != 0.0f)
+            {
+                clicked_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
+                const int decimal_precision = is_decimal ? ImParseFormatPrecision(format, 3) : 0;
+                if ((decimal_precision > 0) || is_power)
+                {
+                    delta /= 100.0f;    // Gamepad/keyboard tweak speeds in % of slider bounds
+                    if (IsNavInputDown(ImGuiNavInput_TweakSlow))
+                        delta /= 10.0f;
+                }
+                else
+                {
+                    if ((v_range >= -100.0f && v_range <= 100.0f) || IsNavInputDown(ImGuiNavInput_TweakSlow))
+                        delta = ((delta < 0.0f) ? -1.0f : +1.0f) / (float)v_range; // Gamepad/keyboard tweak speeds in integer steps
+                    else
+                        delta /= 100.0f;
+                }
+                if (IsNavInputDown(ImGuiNavInput_TweakFast))
+                    delta *= 10.0f;
+                set_new_value = true;
+                if ((clicked_t >= 1.0f && delta > 0.0f) || (clicked_t <= 0.0f && delta < 0.0f)) // This is to avoid applying the saturation when already past the limits
+                    set_new_value = false;
+                else
+                    clicked_t = ImSaturate(clicked_t + delta);
+            }
+        }
+
+        if (set_new_value)
+        {
+            TYPE v_new;
+            if (is_power)
+            {
+                // Account for power curve scale on both sides of the zero
+                if (clicked_t < linear_zero_pos)
+                {
+                    // Negative: rescale to the negative range before powering
+                    float a = 1.0f - (clicked_t / linear_zero_pos);
+                    a = ImPow(a, power);
+                    v_new = ImLerp(ImMin(v_max, (TYPE)0), v_min, a);
+                }
+                else
+                {
+                    // Positive: rescale to the positive range before powering
+                    float a;
+                    if (ImFabs(linear_zero_pos - 1.0f) > 1.e-6f)
+                        a = (clicked_t - linear_zero_pos) / (1.0f - linear_zero_pos);
+                    else
+                        a = clicked_t;
+                    a = ImPow(a, power);
+                    v_new = ImLerp(ImMax(v_min, (TYPE)0), v_max, a);
+                }
+            }
+            else
+            {
+                // Linear slider
+                if (is_decimal)
+                {
+                    v_new = ImLerp(v_min, v_max, clicked_t);
+                }
+                else
+                {
+                    // For integer values we want the clicking position to match the grab box so we round above
+                    // This code is carefully tuned to work with large values (e.g. high ranges of U64) while preserving this property..
+                    FLOATTYPE v_new_off_f = (v_max - v_min) * clicked_t;
+                    TYPE v_new_off_floor = (TYPE)(v_new_off_f);
+                    TYPE v_new_off_round = (TYPE)(v_new_off_f + (FLOATTYPE)0.5);
+                    if (!is_decimal && v_new_off_floor < v_new_off_round)
+                        v_new = v_min + v_new_off_round;
+                    else
+                        v_new = v_min + v_new_off_floor;
+                }
+            }
+
+            // Round to user desired precision based on format string
+            v_new = RoundScalarWithFormat<TYPE,SIGNEDTYPE>(format, data_type, v_new);
+
+            // Apply result
+            if (*v != v_new)
+            {
+                *v = v_new;
+                value_changed = true;
+            }
+        }
+    }
+
+    // Output grab position so it can be displayed by the caller
+    float grab_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
+    if (!is_horizontal)
+        grab_t = 1.0f - grab_t;
+    const float grab_pos = ImLerp(slider_usable_pos_min, slider_usable_pos_max, grab_t);
+    if (is_horizontal)
+        *out_grab_bb = ImRect(grab_pos - grab_sz*0.5f, bb.Min.y + grab_padding, grab_pos + grab_sz*0.5f, bb.Max.y - grab_padding);
+    else
+        *out_grab_bb = ImRect(bb.Min.x + grab_padding, grab_pos - grab_sz*0.5f, bb.Max.x - grab_padding, grab_pos + grab_sz*0.5f);
+
+    return value_changed;
+}
+
+// For 32-bits and larger types, slider bounds are limited to half the natural type range.
+// So e.g. an integer Slider between INT_MAX-10 and INT_MAX will fail, but an integer Slider between INT_MAX/2-10 and INT_MAX/2 will be ok.
+// It would be possible to lift that limitation with some work but it doesn't seem to be worth it for sliders.
+bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power, ImGuiSliderFlags flags, ImRect* out_grab_bb)
+{
+    switch (data_type)
+    {
+    case ImGuiDataType_S32:
+        IM_ASSERT(*(const ImS32*)v_min >= IM_S32_MIN/2 && *(const ImS32*)v_max <= IM_S32_MAX/2);
+        return SliderBehaviorT<ImS32, ImS32, float >(bb, id, data_type, (ImS32*)v,  *(const ImS32*)v_min,  *(const ImS32*)v_max,  format, power, flags, out_grab_bb);
+    case ImGuiDataType_U32:
+        IM_ASSERT(*(const ImU32*)v_min <= IM_U32_MAX/2);
+        return SliderBehaviorT<ImU32, ImS32, float >(bb, id, data_type, (ImU32*)v,  *(const ImU32*)v_min,  *(const ImU32*)v_max,  format, power, flags, out_grab_bb);
+    case ImGuiDataType_S64:
+        IM_ASSERT(*(const ImS64*)v_min >= IM_S64_MIN/2 && *(const ImS64*)v_max <= IM_S64_MAX/2);
+        return SliderBehaviorT<ImS64, ImS64, double>(bb, id, data_type, (ImS64*)v,  *(const ImS64*)v_min,  *(const ImS64*)v_max,  format, power, flags, out_grab_bb);
+    case ImGuiDataType_U64:
+        IM_ASSERT(*(const ImU64*)v_min <= IM_U64_MAX/2);
+        return SliderBehaviorT<ImU64, ImS64, double>(bb, id, data_type, (ImU64*)v,  *(const ImU64*)v_min,  *(const ImU64*)v_max,  format, power, flags, out_grab_bb);
+    case ImGuiDataType_Float:
+        IM_ASSERT(*(const float*)v_min >= -FLT_MAX/2.0f && *(const float*)v_max <= FLT_MAX/2.0f);
+        return SliderBehaviorT<float, float, float >(bb, id, data_type, (float*)v,  *(const float*)v_min,  *(const float*)v_max,  format, power, flags, out_grab_bb);
+    case ImGuiDataType_Double:
+        IM_ASSERT(*(const double*)v_min >= -DBL_MAX/2.0f && *(const double*)v_max <= DBL_MAX/2.0f);
+        return SliderBehaviorT<double,double,double>(bb, id, data_type, (double*)v, *(const double*)v_min, *(const double*)v_max, format, power, flags, out_grab_bb);
+    case ImGuiDataType_COUNT: break;
+    }
+    IM_ASSERT(0);
+    return false;
+}
+
+bool ImGui::SliderScalar(const char* label, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+    const ImGuiID id = window->GetID(label);
+    const float w = CalcItemWidth();
+
+    const ImVec2 label_size = CalcTextSize(label, NULL, true);
+    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2.0f));
+    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
+
+    // NB- we don't call ItemSize() yet because we may turn into a text edit box below
+    if (!ItemAdd(total_bb, id, &frame_bb))
+    {
+        ItemSize(total_bb, style.FramePadding.y);
+        return false;
+    }
+
+    // Default format string when passing NULL
+    // Patch old "%.0f" format string to use "%d", read function comments for more details.
+    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
+    if (format == NULL)
+        format = GDataTypeInfo[data_type].PrintFmt;
+    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
+        format = PatchFormatStringFloatToInt(format);
+
+    // Tabbing or CTRL-clicking on Slider turns it into an input box
+    bool start_text_input = false;
+    const bool tab_focus_requested = FocusableItemRegister(window, id);
+    const bool hovered = ItemHoverable(frame_bb, id);
+    if (tab_focus_requested || (hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
+    {
+        SetActiveID(id, window);
+        SetFocusID(id, window);
+        FocusWindow(window);
+        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
+        if (tab_focus_requested || g.IO.KeyCtrl || g.NavInputId == id)
+        {
+            start_text_input = true;
+            g.ScalarAsInputTextId = 0;
+        }
+    }
+    if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
+        return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
+
+    ItemSize(total_bb, style.FramePadding.y);
+
+    // Draw frame
+    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
+    RenderNavHighlight(frame_bb, id);
+    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
+
+    // Slider behavior
+    ImRect grab_bb;
+    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_None, &grab_bb);
+    if (value_changed)
+        MarkItemEdited(id);
+
+    // Render grab
+    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
+
+    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
+    char value_buf[64];
+    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
+    RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.5f));
+
+    if (label_size.x > 0.0f)
+        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
+
+    return value_changed;
+}
+
+// Add multiple sliders on 1 line for compact edition of multiple components
+bool ImGui::SliderScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* v_min, const void* v_max, const char* format, float power)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    bool value_changed = false;
+    BeginGroup();
+    PushID(label);
+    PushMultiItemsWidths(components);
+    size_t type_size = GDataTypeInfo[data_type].Size;
+    for (int i = 0; i < components; i++)
+    {
+        PushID(i);
+        value_changed |= SliderScalar("##v", data_type, v, v_min, v_max, format, power);
+        SameLine(0, g.Style.ItemInnerSpacing.x);
+        PopID();
+        PopItemWidth();
+        v = (void*)((char*)v + type_size);
+    }
+    PopID();
+
+    TextUnformatted(label, FindRenderedTextEnd(label));
+    EndGroup();
+    return value_changed;
+}
+
+bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format, float power)
+{
+    return SliderScalar(label, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
+}
+
+bool ImGui::SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* format, float power)
+{
+    return SliderScalarN(label, ImGuiDataType_Float, v, 2, &v_min, &v_max, format, power);
+}
+
+bool ImGui::SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format, float power)
+{
+    return SliderScalarN(label, ImGuiDataType_Float, v, 3, &v_min, &v_max, format, power);
+}
+
+bool ImGui::SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* format, float power)
+{
+    return SliderScalarN(label, ImGuiDataType_Float, v, 4, &v_min, &v_max, format, power);
+}
+
+bool ImGui::SliderAngle(const char* label, float* v_rad, float v_degrees_min, float v_degrees_max)
+{
+    float v_deg = (*v_rad) * 360.0f / (2*IM_PI);
+    bool value_changed = SliderFloat(label, &v_deg, v_degrees_min, v_degrees_max, "%.0f deg", 1.0f);
+    *v_rad = v_deg * (2*IM_PI) / 360.0f;
+    return value_changed;
+}
+
+bool ImGui::SliderInt(const char* label, int* v, int v_min, int v_max, const char* format)
+{
+    return SliderScalar(label, ImGuiDataType_S32, v, &v_min, &v_max, format);
+}
+
+bool ImGui::SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* format)
+{
+    return SliderScalarN(label, ImGuiDataType_S32, v, 2, &v_min, &v_max, format);
+}
+
+bool ImGui::SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* format)
+{
+    return SliderScalarN(label, ImGuiDataType_S32, v, 3, &v_min, &v_max, format);
+}
+
+bool ImGui::SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* format)
+{
+    return SliderScalarN(label, ImGuiDataType_S32, v, 4, &v_min, &v_max, format);
+}
+
+bool ImGui::VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+    const ImGuiID id = window->GetID(label);
+
+    const ImVec2 label_size = CalcTextSize(label, NULL, true);
+    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
+    const ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
+
+    ItemSize(bb, style.FramePadding.y);
+    if (!ItemAdd(frame_bb, id))
+        return false;
+
+    // Default format string when passing NULL
+    // Patch old "%.0f" format string to use "%d", read function comments for more details.
+    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
+    if (format == NULL)
+        format = GDataTypeInfo[data_type].PrintFmt;
+    else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
+        format = PatchFormatStringFloatToInt(format);
+
+    const bool hovered = ItemHoverable(frame_bb, id);
+    if ((hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || g.NavInputId == id)
+    {
+        SetActiveID(id, window);
+        SetFocusID(id, window);
+        FocusWindow(window);
+        g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right);
+    }
+
+    // Draw frame
+    const ImU32 frame_col = GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
+    RenderNavHighlight(frame_bb, id);
+    RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding);
+
+    // Slider behavior
+    ImRect grab_bb;
+    const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_Vertical, &grab_bb);
+    if (value_changed)
+        MarkItemEdited(id);
+
+    // Render grab
+    window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, GetColorU32(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab), style.GrabRounding);
+
+    // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
+    // For the vertical slider we allow centered text to overlap the frame padding
+    char value_buf[64];
+    const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
+    RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.0f));
+    if (label_size.x > 0.0f)
+        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
+
+    return value_changed;
+}
+
+bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* format, float power)
+{
+    return VSliderScalar(label, size, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
+}
+
+bool ImGui::VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format)
+{
+    return VSliderScalar(label, size, ImGuiDataType_S32, v, &v_min, &v_max, format);
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Inputs (_excepted InputText_)
+// - ImParseFormatFindStart()
+// - ImParseFormatFindEnd()
+// - ImParseFormatTrimDecorations()
+// - ImParseFormatPrecision()
+// - InputScalarAsWidgetReplacement() [Internal]
+// - InputScalar()
+// - InputScalarN()
+// - InputFloat()
+// - InputFloat2()
+// - InputFloat3()
+// - InputFloat4()
+// - InputInt()
+// - InputInt2()
+// - InputInt3()
+// - InputInt4()
+// - InputDouble()
+//-------------------------------------------------------------------------
+
+// We don't use strchr() because our strings are usually very short and often start with '%'
+const char* ImParseFormatFindStart(const char* fmt)
+{
+    while (char c = fmt[0])
+    {
+        if (c == '%' && fmt[1] != '%')
+            return fmt;
+        else if (c == '%')
+            fmt++;
+        fmt++;
+    }
+    return fmt;
+}
+
+const char* ImParseFormatFindEnd(const char* fmt)
+{
+    // Printf/scanf types modifiers: I/L/h/j/l/t/w/z. Other uppercase letters qualify as types aka end of the format.
+    if (fmt[0] != '%')
+        return fmt;
+    const unsigned int ignored_uppercase_mask = (1 << ('I'-'A')) | (1 << ('L'-'A'));
+    const unsigned int ignored_lowercase_mask = (1 << ('h'-'a')) | (1 << ('j'-'a')) | (1 << ('l'-'a')) | (1 << ('t'-'a')) | (1 << ('w'-'a')) | (1 << ('z'-'a'));
+    for (char c; (c = *fmt) != 0; fmt++)
+    {
+        if (c >= 'A' && c <= 'Z' && ((1 << (c - 'A')) & ignored_uppercase_mask) == 0)
+            return fmt + 1;
+        if (c >= 'a' && c <= 'z' && ((1 << (c - 'a')) & ignored_lowercase_mask) == 0)
+            return fmt + 1;
+    }
+    return fmt;
+}
+
+// Extract the format out of a format string with leading or trailing decorations
+//  fmt = "blah blah"  -> return fmt
+//  fmt = "%.3f"       -> return fmt
+//  fmt = "hello %.3f" -> return fmt + 6
+//  fmt = "%.3f hello" -> return buf written with "%.3f"
+const char* ImParseFormatTrimDecorations(const char* fmt, char* buf, int buf_size)
+{
+    const char* fmt_start = ImParseFormatFindStart(fmt);
+    if (fmt_start[0] != '%')
+        return fmt;
+    const char* fmt_end = ImParseFormatFindEnd(fmt_start);
+    if (fmt_end[0] == 0) // If we only have leading decoration, we don't need to copy the data.
+        return fmt_start;
+    ImStrncpy(buf, fmt_start, ImMin((int)(fmt_end + 1 - fmt_start), buf_size));
+    return buf;
+}
+
+// Parse display precision back from the display format string
+// FIXME: This is still used by some navigation code path to infer a minimum tweak step, but we should aim to rework widgets so it isn't needed.
+int ImParseFormatPrecision(const char* fmt, int default_precision)
+{
+    fmt = ImParseFormatFindStart(fmt);
+    if (fmt[0] != '%')
+        return default_precision;
+    fmt++;
+    while (*fmt >= '0' && *fmt <= '9')
+        fmt++;
+    int precision = INT_MAX;
+    if (*fmt == '.')
+    {
+        fmt = ImAtoi<int>(fmt + 1, &precision);
+        if (precision < 0 || precision > 99)
+            precision = default_precision;
+    }
+    if (*fmt == 'e' || *fmt == 'E') // Maximum precision with scientific notation
+        precision = -1;
+    if ((*fmt == 'g' || *fmt == 'G') && precision == INT_MAX)
+        precision = -1;
+    return (precision == INT_MAX) ? default_precision : precision;
+}
+
+// Create text input in place of a slider (when CTRL+Clicking on slider)
+// FIXME: Logic is messy and confusing.
+bool ImGui::InputScalarAsWidgetReplacement(const ImRect& bb, ImGuiID id, const char* label, ImGuiDataType data_type, void* data_ptr, const char* format)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+
+    // Our replacement widget will override the focus ID (registered previously to allow for a TAB focus to happen)
+    // On the first frame, g.ScalarAsInputTextId == 0, then on subsequent frames it becomes == id
+    SetActiveID(g.ScalarAsInputTextId, window);
+    g.ActiveIdAllowNavDirFlags = (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
+    SetHoveredID(0);
+    FocusableItemUnregister(window);
+
+    char fmt_buf[32];
+    char data_buf[32];
+    format = ImParseFormatTrimDecorations(format, fmt_buf, IM_ARRAYSIZE(fmt_buf));
+    DataTypeFormatString(data_buf, IM_ARRAYSIZE(data_buf), data_type, data_ptr, format);
+    ImStrTrimBlanks(data_buf);
+    ImGuiInputTextFlags flags = ImGuiInputTextFlags_AutoSelectAll | ((data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double) ? ImGuiInputTextFlags_CharsScientific : ImGuiInputTextFlags_CharsDecimal);
+    bool value_changed = InputTextEx(label, data_buf, IM_ARRAYSIZE(data_buf), bb.GetSize(), flags);
+    if (g.ScalarAsInputTextId == 0)     // First frame we started displaying the InputText widget
+    {
+        IM_ASSERT(g.ActiveId == id);    // InputText ID expected to match the Slider ID
+        g.ScalarAsInputTextId = g.ActiveId;
+        SetHoveredID(id);
+    }
+    if (value_changed)
+        return DataTypeApplyOpFromText(data_buf, g.InputTextState.InitialText.Data, data_type, data_ptr, NULL);
+    return false;
+}
+
+// NB: format here must be a simple "%xx" format string with no prefix/suffix (unlike the Drag/Slider functions "format" argument)
+bool ImGui::InputScalar(const char* label, ImGuiDataType data_type, void* data_ptr, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+
+    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
+    if (format == NULL)
+        format = GDataTypeInfo[data_type].PrintFmt;
+
+    char buf[64];
+    DataTypeFormatString(buf, IM_ARRAYSIZE(buf), data_type, data_ptr, format);
+
+    bool value_changed = false;
+    if ((extra_flags & (ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsScientific)) == 0)
+        extra_flags |= ImGuiInputTextFlags_CharsDecimal;
+    extra_flags |= ImGuiInputTextFlags_AutoSelectAll;
+
+    if (step != NULL)
+    {
+        const float button_size = GetFrameHeight();
+
+        BeginGroup(); // The only purpose of the group here is to allow the caller to query item data e.g. IsItemActive()
+        PushID(label);
+        PushItemWidth(ImMax(1.0f, CalcItemWidth() - (button_size + style.ItemInnerSpacing.x) * 2));
+        if (InputText("", buf, IM_ARRAYSIZE(buf), extra_flags)) // PushId(label) + "" gives us the expected ID from outside point of view
+            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
+        PopItemWidth();
+
+        // Step buttons
+        SameLine(0, style.ItemInnerSpacing.x);
+        if (ButtonEx("-", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
+        {
+            DataTypeApplyOp(data_type, '-', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
+            value_changed = true;
+        }
+        SameLine(0, style.ItemInnerSpacing.x);
+        if (ButtonEx("+", ImVec2(button_size, button_size), ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
+        {
+            DataTypeApplyOp(data_type, '+', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast ? step_fast : step);
+            value_changed = true;
+        }
+        SameLine(0, style.ItemInnerSpacing.x);
+        TextUnformatted(label, FindRenderedTextEnd(label));
+
+        PopID();
+        EndGroup();
+    }
+    else
+    {
+        if (InputText(label, buf, IM_ARRAYSIZE(buf), extra_flags))
+            value_changed = DataTypeApplyOpFromText(buf, g.InputTextState.InitialText.Data, data_type, data_ptr, format);
+    }
+
+    return value_changed;
+}
+
+bool ImGui::InputScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    bool value_changed = false;
+    BeginGroup();
+    PushID(label);
+    PushMultiItemsWidths(components);
+    size_t type_size = GDataTypeInfo[data_type].Size;
+    for (int i = 0; i < components; i++)
+    {
+        PushID(i);
+        value_changed |= InputScalar("##v", data_type, v, step, step_fast, format, extra_flags);
+        SameLine(0, g.Style.ItemInnerSpacing.x);
+        PopID();
+        PopItemWidth();
+        v = (void*)((char*)v + type_size);
+    }
+    PopID();
+
+    TextUnformatted(label, FindRenderedTextEnd(label));
+    EndGroup();
+    return value_changed;
+}
+
+bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, const char* format, ImGuiInputTextFlags extra_flags)
+{
+    extra_flags |= ImGuiInputTextFlags_CharsScientific;
+    return InputScalar(label, ImGuiDataType_Float, (void*)v, (void*)(step>0.0f ? &step : NULL), (void*)(step_fast>0.0f ? &step_fast : NULL), format, extra_flags);
+}
+
+bool ImGui::InputFloat2(const char* label, float v[2], const char* format, ImGuiInputTextFlags extra_flags)
+{
+    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
+}
+
+bool ImGui::InputFloat3(const char* label, float v[3], const char* format, ImGuiInputTextFlags extra_flags)
+{
+    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
+}
+
+bool ImGui::InputFloat4(const char* label, float v[4], const char* format, ImGuiInputTextFlags extra_flags)
+{
+    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
+}
+
+// Prefer using "const char* format" directly, which is more flexible and consistent with other API.
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, int decimal_precision, ImGuiInputTextFlags extra_flags)
+{
+    char format[16] = "%f";
+    if (decimal_precision >= 0)
+        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
+    return InputFloat(label, v, step, step_fast, format, extra_flags);
+}
+
+bool ImGui::InputFloat2(const char* label, float v[2], int decimal_precision, ImGuiInputTextFlags extra_flags)
+{
+    char format[16] = "%f";
+    if (decimal_precision >= 0)
+        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
+    return InputScalarN(label, ImGuiDataType_Float, v, 2, NULL, NULL, format, extra_flags);
+}
+
+bool ImGui::InputFloat3(const char* label, float v[3], int decimal_precision, ImGuiInputTextFlags extra_flags)
+{
+    char format[16] = "%f";
+    if (decimal_precision >= 0)
+        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
+    return InputScalarN(label, ImGuiDataType_Float, v, 3, NULL, NULL, format, extra_flags);
+}
+
+bool ImGui::InputFloat4(const char* label, float v[4], int decimal_precision, ImGuiInputTextFlags extra_flags)
+{
+    char format[16] = "%f";
+    if (decimal_precision >= 0)
+        ImFormatString(format, IM_ARRAYSIZE(format), "%%.%df", decimal_precision);
+    return InputScalarN(label, ImGuiDataType_Float, v, 4, NULL, NULL, format, extra_flags);
+}
+#endif // IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+
+bool ImGui::InputInt(const char* label, int* v, int step, int step_fast, ImGuiInputTextFlags extra_flags)
+{
+    // Hexadecimal input provided as a convenience but the flag name is awkward. Typically you'd use InputText() to parse your own data, if you want to handle prefixes.
+    const char* format = (extra_flags & ImGuiInputTextFlags_CharsHexadecimal) ? "%08X" : "%d";
+    return InputScalar(label, ImGuiDataType_S32, (void*)v, (void*)(step>0 ? &step : NULL), (void*)(step_fast>0 ? &step_fast : NULL), format, extra_flags);
+}
+
+bool ImGui::InputInt2(const char* label, int v[2], ImGuiInputTextFlags extra_flags)
+{
+    return InputScalarN(label, ImGuiDataType_S32, v, 2, NULL, NULL, "%d", extra_flags);
+}
+
+bool ImGui::InputInt3(const char* label, int v[3], ImGuiInputTextFlags extra_flags)
+{
+    return InputScalarN(label, ImGuiDataType_S32, v, 3, NULL, NULL, "%d", extra_flags);
+}
+
+bool ImGui::InputInt4(const char* label, int v[4], ImGuiInputTextFlags extra_flags)
+{
+    return InputScalarN(label, ImGuiDataType_S32, v, 4, NULL, NULL, "%d", extra_flags);
+}
+
+bool ImGui::InputDouble(const char* label, double* v, double step, double step_fast, const char* format, ImGuiInputTextFlags extra_flags)
+{
+    extra_flags |= ImGuiInputTextFlags_CharsScientific;
+    return InputScalar(label, ImGuiDataType_Double, (void*)v, (void*)(step>0.0 ? &step : NULL), (void*)(step_fast>0.0 ? &step_fast : NULL), format, extra_flags);
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: InputText
+// - InputText()
+// - InputTextMultiline()
+// - InputTextEx() [Internal]
+//-------------------------------------------------------------------------
+
+bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
+{
+    IM_ASSERT(!(flags & ImGuiInputTextFlags_Multiline)); // call InputTextMultiline()
+    return InputTextEx(label, buf, (int)buf_size, ImVec2(0,0), flags, callback, user_data);
+}
+
+bool ImGui::InputTextMultiline(const char* label, char* buf, size_t buf_size, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
+{
+    return InputTextEx(label, buf, (int)buf_size, size, flags | ImGuiInputTextFlags_Multiline, callback, user_data);
+}
+
+static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end)
+{
+    int line_count = 0;
+    const char* s = text_begin;
+    while (char c = *s++) // We are only matching for \n so we can ignore UTF-8 decoding
+        if (c == '\n')
+            line_count++;
+    s--;
+    if (s[0] != '\n' && s[0] != '\r')
+        line_count++;
+    *out_text_end = s;
+    return line_count;
+}
+
+static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining, ImVec2* out_offset, bool stop_on_new_line)
+{
+    ImFont* font = GImGui->Font;
+    const float line_height = GImGui->FontSize;
+    const float scale = line_height / font->FontSize;
+
+    ImVec2 text_size = ImVec2(0,0);
+    float line_width = 0.0f;
+
+    const ImWchar* s = text_begin;
+    while (s < text_end)
+    {
+        unsigned int c = (unsigned int)(*s++);
+        if (c == '\n')
+        {
+            text_size.x = ImMax(text_size.x, line_width);
+            text_size.y += line_height;
+            line_width = 0.0f;
+            if (stop_on_new_line)
+                break;
+            continue;
+        }
+        if (c == '\r')
+            continue;
+
+        const float char_width = font->GetCharAdvance((unsigned short)c) * scale;
+        line_width += char_width;
+    }
+
+    if (text_size.x < line_width)
+        text_size.x = line_width;
+
+    if (out_offset)
+        *out_offset = ImVec2(line_width, text_size.y + line_height);  // offset allow for the possibility of sitting after a trailing \n
+
+    if (line_width > 0 || text_size.y == 0.0f)                        // whereas size.y will ignore the trailing \n
+        text_size.y += line_height;
+
+    if (remaining)
+        *remaining = s;
+
+    return text_size;
+}
+
+// Wrapper for stb_textedit.h to edit text (our wrapper is for: statically sized buffer, single-line, wchar characters. InputText converts between UTF-8 and wchar)
+namespace ImGuiStb
+{
+
+static int     STB_TEXTEDIT_STRINGLEN(const STB_TEXTEDIT_STRING* obj)                             { return obj->CurLenW; }
+static ImWchar STB_TEXTEDIT_GETCHAR(const STB_TEXTEDIT_STRING* obj, int idx)                      { return obj->TextW[idx]; }
+static float   STB_TEXTEDIT_GETWIDTH(STB_TEXTEDIT_STRING* obj, int line_start_idx, int char_idx)  { ImWchar c = obj->TextW[line_start_idx+char_idx]; if (c == '\n') return STB_TEXTEDIT_GETWIDTH_NEWLINE; return GImGui->Font->GetCharAdvance(c) * (GImGui->FontSize / GImGui->Font->FontSize); }
+static int     STB_TEXTEDIT_KEYTOTEXT(int key)                                                    { return key >= 0x10000 ? 0 : key; }
+static ImWchar STB_TEXTEDIT_NEWLINE = '\n';
+static void    STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, STB_TEXTEDIT_STRING* obj, int line_start_idx)
+{
+    const ImWchar* text = obj->TextW.Data;
+    const ImWchar* text_remaining = NULL;
+    const ImVec2 size = InputTextCalcTextSizeW(text + line_start_idx, text + obj->CurLenW, &text_remaining, NULL, true);
+    r->x0 = 0.0f;
+    r->x1 = size.x;
+    r->baseline_y_delta = size.y;
+    r->ymin = 0.0f;
+    r->ymax = size.y;
+    r->num_chars = (int)(text_remaining - (text + line_start_idx));
+}
+
+static bool is_separator(unsigned int c)                                        { return ImCharIsBlankW(c) || c==',' || c==';' || c=='(' || c==')' || c=='{' || c=='}' || c=='[' || c==']' || c=='|'; }
+static int  is_word_boundary_from_right(STB_TEXTEDIT_STRING* obj, int idx)      { return idx > 0 ? (is_separator( obj->TextW[idx-1] ) && !is_separator( obj->TextW[idx] ) ) : 1; }
+static int  STB_TEXTEDIT_MOVEWORDLEFT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)   { idx--; while (idx >= 0 && !is_word_boundary_from_right(obj, idx)) idx--; return idx < 0 ? 0 : idx; }
+#ifdef __APPLE__    // FIXME: Move setting to IO structure
+static int  is_word_boundary_from_left(STB_TEXTEDIT_STRING* obj, int idx)       { return idx > 0 ? (!is_separator( obj->TextW[idx-1] ) && is_separator( obj->TextW[idx] ) ) : 1; }
+static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_left(obj, idx)) idx++; return idx > len ? len : idx; }
+#else
+static int  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx)  { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_right(obj, idx)) idx++; return idx > len ? len : idx; }
+#endif
+#define STB_TEXTEDIT_MOVEWORDLEFT   STB_TEXTEDIT_MOVEWORDLEFT_IMPL    // They need to be #define for stb_textedit.h
+#define STB_TEXTEDIT_MOVEWORDRIGHT  STB_TEXTEDIT_MOVEWORDRIGHT_IMPL
+
+static void STB_TEXTEDIT_DELETECHARS(STB_TEXTEDIT_STRING* obj, int pos, int n)
+{
+    ImWchar* dst = obj->TextW.Data + pos;
+
+    // We maintain our buffer length in both UTF-8 and wchar formats
+    obj->CurLenA -= ImTextCountUtf8BytesFromStr(dst, dst + n);
+    obj->CurLenW -= n;
+
+    // Offset remaining text
+    const ImWchar* src = obj->TextW.Data + pos + n;
+    while (ImWchar c = *src++)
+        *dst++ = c;
+    *dst = '\0';
+}
+
+static bool STB_TEXTEDIT_INSERTCHARS(STB_TEXTEDIT_STRING* obj, int pos, const ImWchar* new_text, int new_text_len)
+{
+    const bool is_resizable = (obj->UserFlags & ImGuiInputTextFlags_CallbackResize) != 0;
+    const int text_len = obj->CurLenW;
+    IM_ASSERT(pos <= text_len);
+
+    const int new_text_len_utf8 = ImTextCountUtf8BytesFromStr(new_text, new_text + new_text_len);
+    if (!is_resizable && (new_text_len_utf8 + obj->CurLenA + 1 > obj->BufCapacityA))
+        return false;
+
+    // Grow internal buffer if needed
+    if (new_text_len + text_len + 1 > obj->TextW.Size)
+    {
+        if (!is_resizable)
+            return false;
+        IM_ASSERT(text_len < obj->TextW.Size);
+        obj->TextW.resize(text_len + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1);
+    }
+
+    ImWchar* text = obj->TextW.Data;
+    if (pos != text_len)
+        memmove(text + pos + new_text_len, text + pos, (size_t)(text_len - pos) * sizeof(ImWchar));
+    memcpy(text + pos, new_text, (size_t)new_text_len * sizeof(ImWchar));
+
+    obj->CurLenW += new_text_len;
+    obj->CurLenA += new_text_len_utf8;
+    obj->TextW[obj->CurLenW] = '\0';
+
+    return true;
+}
+
+// We don't use an enum so we can build even with conflicting symbols (if another user of stb_textedit.h leak their STB_TEXTEDIT_K_* symbols)
+#define STB_TEXTEDIT_K_LEFT         0x10000 // keyboard input to move cursor left
+#define STB_TEXTEDIT_K_RIGHT        0x10001 // keyboard input to move cursor right
+#define STB_TEXTEDIT_K_UP           0x10002 // keyboard input to move cursor up
+#define STB_TEXTEDIT_K_DOWN         0x10003 // keyboard input to move cursor down
+#define STB_TEXTEDIT_K_LINESTART    0x10004 // keyboard input to move cursor to start of line
+#define STB_TEXTEDIT_K_LINEEND      0x10005 // keyboard input to move cursor to end of line
+#define STB_TEXTEDIT_K_TEXTSTART    0x10006 // keyboard input to move cursor to start of text
+#define STB_TEXTEDIT_K_TEXTEND      0x10007 // keyboard input to move cursor to end of text
+#define STB_TEXTEDIT_K_DELETE       0x10008 // keyboard input to delete selection or character under cursor
+#define STB_TEXTEDIT_K_BACKSPACE    0x10009 // keyboard input to delete selection or character left of cursor
+#define STB_TEXTEDIT_K_UNDO         0x1000A // keyboard input to perform undo
+#define STB_TEXTEDIT_K_REDO         0x1000B // keyboard input to perform redo
+#define STB_TEXTEDIT_K_WORDLEFT     0x1000C // keyboard input to move cursor left one word
+#define STB_TEXTEDIT_K_WORDRIGHT    0x1000D // keyboard input to move cursor right one word
+#define STB_TEXTEDIT_K_SHIFT        0x20000
+
+#define STB_TEXTEDIT_IMPLEMENTATION
+#include "stb_textedit.h"
+
+}
+
+void ImGuiInputTextState::OnKeyPressed(int key)
+{
+    stb_textedit_key(this, &StbState, key);
+    CursorFollow = true;
+    CursorAnimReset();
+}
+
+ImGuiInputTextCallbackData::ImGuiInputTextCallbackData()
+{
+    memset(this, 0, sizeof(*this));
+}
+
+// Public API to manipulate UTF-8 text
+// We expose UTF-8 to the user (unlike the STB_TEXTEDIT_* functions which are manipulating wchar)
+// FIXME: The existence of this rarely exercised code path is a bit of a nuisance.
+void ImGuiInputTextCallbackData::DeleteChars(int pos, int bytes_count)
+{
+    IM_ASSERT(pos + bytes_count <= BufTextLen);
+    char* dst = Buf + pos;
+    const char* src = Buf + pos + bytes_count;
+    while (char c = *src++)
+        *dst++ = c;
+    *dst = '\0';
+
+    if (CursorPos + bytes_count >= pos)
+        CursorPos -= bytes_count;
+    else if (CursorPos >= pos)
+        CursorPos = pos;
+    SelectionStart = SelectionEnd = CursorPos;
+    BufDirty = true;
+    BufTextLen -= bytes_count;
+}
+
+void ImGuiInputTextCallbackData::InsertChars(int pos, const char* new_text, const char* new_text_end)
+{
+    const bool is_resizable = (Flags & ImGuiInputTextFlags_CallbackResize) != 0;
+    const int new_text_len = new_text_end ? (int)(new_text_end - new_text) : (int)strlen(new_text);
+    if (new_text_len + BufTextLen >= BufSize)
+    {
+        if (!is_resizable)
+            return;
+
+        // Contrary to STB_TEXTEDIT_INSERTCHARS() this is working in the UTF8 buffer, hence the midly similar code (until we remove the U16 buffer alltogether!)
+        ImGuiContext& g = *GImGui;
+        ImGuiInputTextState* edit_state = &g.InputTextState;
+        IM_ASSERT(edit_state->ID != 0 && g.ActiveId == edit_state->ID);
+        IM_ASSERT(Buf == edit_state->TempBuffer.Data);
+        int new_buf_size = BufTextLen + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1;
+        edit_state->TempBuffer.reserve(new_buf_size + 1);
+        Buf = edit_state->TempBuffer.Data;
+        BufSize = edit_state->BufCapacityA = new_buf_size;
+    }
+
+    if (BufTextLen != pos)
+        memmove(Buf + pos + new_text_len, Buf + pos, (size_t)(BufTextLen - pos));
+    memcpy(Buf + pos, new_text, (size_t)new_text_len * sizeof(char));
+    Buf[BufTextLen + new_text_len] = '\0';
+
+    if (CursorPos >= pos)
+        CursorPos += new_text_len;
+    SelectionStart = SelectionEnd = CursorPos;
+    BufDirty = true;
+    BufTextLen += new_text_len;
+}
+
+// Return false to discard a character.
+static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
+{
+    unsigned int c = *p_char;
+
+    if (c < 128 && c != ' ' && !isprint((int)(c & 0xFF)))
+    {
+        bool pass = false;
+        pass |= (c == '\n' && (flags & ImGuiInputTextFlags_Multiline));
+        pass |= (c == '\t' && (flags & ImGuiInputTextFlags_AllowTabInput));
+        if (!pass)
+            return false;
+    }
+
+    if (c >= 0xE000 && c <= 0xF8FF) // Filter private Unicode range. I don't imagine anybody would want to input them. GLFW on OSX seems to send private characters for special keys like arrow keys.
+        return false;
+
+    if (flags & (ImGuiInputTextFlags_CharsDecimal | ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase | ImGuiInputTextFlags_CharsNoBlank | ImGuiInputTextFlags_CharsScientific))
+    {
+        if (flags & ImGuiInputTextFlags_CharsDecimal)
+            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/'))
+                return false;
+
+        if (flags & ImGuiInputTextFlags_CharsScientific)
+            if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/') && (c != 'e') && (c != 'E'))
+                return false;
+
+        if (flags & ImGuiInputTextFlags_CharsHexadecimal)
+            if (!(c >= '0' && c <= '9') && !(c >= 'a' && c <= 'f') && !(c >= 'A' && c <= 'F'))
+                return false;
+
+        if (flags & ImGuiInputTextFlags_CharsUppercase)
+            if (c >= 'a' && c <= 'z')
+                *p_char = (c += (unsigned int)('A'-'a'));
+
+        if (flags & ImGuiInputTextFlags_CharsNoBlank)
+            if (ImCharIsBlankW(c))
+                return false;
+    }
+
+    if (flags & ImGuiInputTextFlags_CallbackCharFilter)
+    {
+        ImGuiInputTextCallbackData callback_data;
+        memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
+        callback_data.EventFlag = ImGuiInputTextFlags_CallbackCharFilter;
+        callback_data.EventChar = (ImWchar)c;
+        callback_data.Flags = flags;
+        callback_data.UserData = user_data;
+        if (callback(&callback_data) != 0)
+            return false;
+        *p_char = callback_data.EventChar;
+        if (!callback_data.EventChar)
+            return false;
+    }
+
+    return true;
+}
+
+// Edit a string of text
+// - buf_size account for the zero-terminator, so a buf_size of 6 can hold "Hello" but not "Hello!".
+//   This is so we can easily call InputText() on static arrays using ARRAYSIZE() and to match 
+//   Note that in std::string world, capacity() would omit 1 byte used by the zero-terminator.
+// - When active, hold on a privately held copy of the text (and apply back to 'buf'). So changing 'buf' while the InputText is active has no effect.
+// - If you want to use ImGui::InputText() with std::string, see misc/stl/imgui_stl.h
+// (FIXME: Rather messy function partly because we are doing UTF8 > u16 > UTF8 conversions on the go to more easily handle stb_textedit calls. Ideally we should stay in UTF-8 all the time. See https://github.com/nothings/stb/issues/188)
+bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2& size_arg, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* callback_user_data)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackHistory) && (flags & ImGuiInputTextFlags_Multiline)));        // Can't use both together (they both use up/down keys)
+    IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackCompletion) && (flags & ImGuiInputTextFlags_AllowTabInput))); // Can't use both together (they both use tab key)
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiIO& io = g.IO;
+    const ImGuiStyle& style = g.Style;
+
+    const bool is_multiline = (flags & ImGuiInputTextFlags_Multiline) != 0;
+    const bool is_editable = (flags & ImGuiInputTextFlags_ReadOnly) == 0;
+    const bool is_password = (flags & ImGuiInputTextFlags_Password) != 0;
+    const bool is_undoable = (flags & ImGuiInputTextFlags_NoUndoRedo) == 0;
+    const bool is_resizable = (flags & ImGuiInputTextFlags_CallbackResize) != 0;
+    if (is_resizable)
+        IM_ASSERT(callback != NULL); // Must provide a callback if you set the ImGuiInputTextFlags_CallbackResize flag!
+
+    if (is_multiline) // Open group before calling GetID() because groups tracks id created within their scope, 
+        BeginGroup();
+    const ImGuiID id = window->GetID(label);
+    const ImVec2 label_size = CalcTextSize(label, NULL, true);
+    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), (is_multiline ? GetTextLineHeight() * 8.0f : label_size.y) + style.FramePadding.y*2.0f); // Arbitrary default of 8 lines high for multi-line
+    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
+    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? (style.ItemInnerSpacing.x + label_size.x) : 0.0f, 0.0f));
+
+    ImGuiWindow* draw_window = window;
+    if (is_multiline)
+    {
+        ItemAdd(total_bb, id, &frame_bb);
+        if (!BeginChildFrame(id, frame_bb.GetSize()))
+        {
+            EndChildFrame();
+            EndGroup();
+            return false;
+        }
+        draw_window = GetCurrentWindow();
+        draw_window->DC.NavLayerActiveMaskNext |= draw_window->DC.NavLayerCurrentMask; // This is to ensure that EndChild() will display a navigation highlight
+        size.x -= draw_window->ScrollbarSizes.x;
+    }
+    else
+    {
+        ItemSize(total_bb, style.FramePadding.y);
+        if (!ItemAdd(total_bb, id, &frame_bb))
+            return false;
+    }
+    const bool hovered = ItemHoverable(frame_bb, id);
+    if (hovered)
+        g.MouseCursor = ImGuiMouseCursor_TextInput;
+
+    // Password pushes a temporary font with only a fallback glyph
+    if (is_password)
+    {
+        const ImFontGlyph* glyph = g.Font->FindGlyph('*');
+        ImFont* password_font = &g.InputTextPasswordFont;
+        password_font->FontSize = g.Font->FontSize;
+        password_font->Scale = g.Font->Scale;
+        password_font->DisplayOffset = g.Font->DisplayOffset;
+        password_font->Ascent = g.Font->Ascent;
+        password_font->Descent = g.Font->Descent;
+        password_font->ContainerAtlas = g.Font->ContainerAtlas;
+        password_font->FallbackGlyph = glyph;
+        password_font->FallbackAdvanceX = glyph->AdvanceX;
+        IM_ASSERT(password_font->Glyphs.empty() && password_font->IndexAdvanceX.empty() && password_font->IndexLookup.empty());
+        PushFont(password_font);
+    }
+
+    // NB: we are only allowed to access 'edit_state' if we are the active widget.
+    ImGuiInputTextState& edit_state = g.InputTextState;
+
+    const bool focus_requested = FocusableItemRegister(window, id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0);    // Using completion callback disable keyboard tabbing
+    const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent);
+    const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code;
+
+    const bool user_clicked = hovered && io.MouseClicked[0];
+    const bool user_scrolled = is_multiline && g.ActiveId == 0 && edit_state.ID == id && g.ActiveIdPreviousFrame == draw_window->GetIDNoKeepAlive("#SCROLLY");
+    const bool user_nav_input_start = (g.ActiveId != id) && ((g.NavInputId == id) || (g.NavActivateId == id && g.NavInputSource == ImGuiInputSource_NavKeyboard));
+
+    bool clear_active_id = false;
+
+    bool select_all = (g.ActiveId != id) && ((flags & ImGuiInputTextFlags_AutoSelectAll) != 0 || user_nav_input_start) && (!is_multiline);
+    if (focus_requested || user_clicked || user_scrolled || user_nav_input_start)
+    {
+        if (g.ActiveId != id)
+        {
+            // Start edition
+            // Take a copy of the initial buffer value (both in original UTF-8 format and converted to wchar)
+            // From the moment we focused we are ignoring the content of 'buf' (unless we are in read-only mode)
+            const int prev_len_w = edit_state.CurLenW;
+            const int init_buf_len = (int)strlen(buf);
+            edit_state.TextW.resize(buf_size+1);             // wchar count <= UTF-8 count. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
+            edit_state.InitialText.resize(init_buf_len + 1); // UTF-8. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
+            memcpy(edit_state.InitialText.Data, buf, init_buf_len + 1);
+            const char* buf_end = NULL;
+            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, buf_size, buf, NULL, &buf_end);
+            edit_state.CurLenA = (int)(buf_end - buf); // We can't get the result from ImStrncpy() above because it is not UTF-8 aware. Here we'll cut off malformed UTF-8.
+            edit_state.CursorAnimReset();
+
+            // Preserve cursor position and undo/redo stack if we come back to same widget
+            // FIXME: We should probably compare the whole buffer to be on the safety side. Comparing buf (utf8) and edit_state.Text (wchar).
+            const bool recycle_state = (edit_state.ID == id) && (prev_len_w == edit_state.CurLenW);
+            if (recycle_state)
+            {
+                // Recycle existing cursor/selection/undo stack but clamp position
+                // Note a single mouse click will override the cursor/position immediately by calling stb_textedit_click handler.
+                edit_state.CursorClamp();
+            }
+            else
+            {
+                edit_state.ID = id;
+                edit_state.ScrollX = 0.0f;
+                stb_textedit_initialize_state(&edit_state.StbState, !is_multiline);
+                if (!is_multiline && focus_requested_by_code)
+                    select_all = true;
+            }
+            if (flags & ImGuiInputTextFlags_AlwaysInsertMode)
+                edit_state.StbState.insert_mode = true;
+            if (!is_multiline && (focus_requested_by_tab || (user_clicked && io.KeyCtrl)))
+                select_all = true;
+        }
+        SetActiveID(id, window);
+        SetFocusID(id, window);
+        FocusWindow(window);
+        if (!is_multiline && !(flags & ImGuiInputTextFlags_CallbackHistory))
+            g.ActiveIdAllowNavDirFlags |= ((1 << ImGuiDir_Up) | (1 << ImGuiDir_Down));
+    }
+    else if (io.MouseClicked[0])
+    {
+        // Release focus when we click outside
+        clear_active_id = true;
+    }
+
+    bool value_changed = false;
+    bool enter_pressed = false;
+    int backup_current_text_length = 0;
+
+    if (g.ActiveId == id)
+    {
+        if (!is_editable && !g.ActiveIdIsJustActivated)
+        {
+            // When read-only we always use the live data passed to the function
+            edit_state.TextW.resize(buf_size+1);
+            const char* buf_end = NULL;
+            edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, buf, NULL, &buf_end);
+            edit_state.CurLenA = (int)(buf_end - buf);
+            edit_state.CursorClamp();
+        }
+
+        backup_current_text_length = edit_state.CurLenA;
+        edit_state.BufCapacityA = buf_size;
+        edit_state.UserFlags = flags;
+        edit_state.UserCallback = callback;
+        edit_state.UserCallbackData = callback_user_data;
+
+        // Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.
+        // Down the line we should have a cleaner library-wide concept of Selected vs Active.
+        g.ActiveIdAllowOverlap = !io.MouseDown[0];
+        g.WantTextInputNextFrame = 1;
+
+        // Edit in progress
+        const float mouse_x = (io.MousePos.x - frame_bb.Min.x - style.FramePadding.x) + edit_state.ScrollX;
+        const float mouse_y = (is_multiline ? (io.MousePos.y - draw_window->DC.CursorPos.y - style.FramePadding.y) : (g.FontSize*0.5f));
+
+        const bool is_osx = io.ConfigMacOSXBehaviors;
+        if (select_all || (hovered && !is_osx && io.MouseDoubleClicked[0]))
+        {
+            edit_state.SelectAll();
+            edit_state.SelectedAllMouseLock = true;
+        }
+        else if (hovered && is_osx && io.MouseDoubleClicked[0])
+        {
+            // Double-click select a word only, OS X style (by simulating keystrokes)
+            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT);
+            edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDRIGHT | STB_TEXTEDIT_K_SHIFT);
+        }
+        else if (io.MouseClicked[0] && !edit_state.SelectedAllMouseLock)
+        {
+            if (hovered)
+            {
+                stb_textedit_click(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
+                edit_state.CursorAnimReset();
+            }
+        }
+        else if (io.MouseDown[0] && !edit_state.SelectedAllMouseLock && (io.MouseDelta.x != 0.0f || io.MouseDelta.y != 0.0f))
+        {
+            stb_textedit_drag(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
+            edit_state.CursorAnimReset();
+            edit_state.CursorFollow = true;
+        }
+        if (edit_state.SelectedAllMouseLock && !io.MouseDown[0])
+            edit_state.SelectedAllMouseLock = false;
+
+        if (io.InputCharacters[0])
+        {
+            // Process text input (before we check for Return because using some IME will effectively send a Return?)
+            // We ignore CTRL inputs, but need to allow ALT+CTRL as some keyboards (e.g. German) use AltGR (which _is_ Alt+Ctrl) to input certain characters.
+            bool ignore_inputs = (io.KeyCtrl && !io.KeyAlt) || (is_osx && io.KeySuper);
+            if (!ignore_inputs && is_editable && !user_nav_input_start)
+                for (int n = 0; n < IM_ARRAYSIZE(io.InputCharacters) && io.InputCharacters[n]; n++)
+                {
+                    // Insert character if they pass filtering
+                    unsigned int c = (unsigned int)io.InputCharacters[n];
+                    if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
+                        edit_state.OnKeyPressed((int)c);
+                }
+
+            // Consume characters
+            memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters));
+        }
+    }
+
+    bool cancel_edit = false;
+    if (g.ActiveId == id && !g.ActiveIdIsJustActivated && !clear_active_id)
+    {
+        // Handle key-presses
+        const int k_mask = (io.KeyShift ? STB_TEXTEDIT_K_SHIFT : 0);
+        const bool is_osx = io.ConfigMacOSXBehaviors;
+        const bool is_shortcut_key = (is_osx ? (io.KeySuper && !io.KeyCtrl) : (io.KeyCtrl && !io.KeySuper)) && !io.KeyAlt && !io.KeyShift; // OS X style: Shortcuts using Cmd/Super instead of Ctrl
+        const bool is_osx_shift_shortcut = is_osx && io.KeySuper && io.KeyShift && !io.KeyCtrl && !io.KeyAlt;
+        const bool is_wordmove_key_down = is_osx ? io.KeyAlt : io.KeyCtrl;                     // OS X style: Text editing cursor movement using Alt instead of Ctrl
+        const bool is_startend_key_down = is_osx && io.KeySuper && !io.KeyCtrl && !io.KeyAlt;  // OS X style: Line/Text Start and End using Cmd+Arrows instead of Home/End
+        const bool is_ctrl_key_only = io.KeyCtrl && !io.KeyShift && !io.KeyAlt && !io.KeySuper;
+        const bool is_shift_key_only = io.KeyShift && !io.KeyCtrl && !io.KeyAlt && !io.KeySuper;
+
+        const bool is_cut   = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_X)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Delete))) && is_editable && !is_password && (!is_multiline || edit_state.HasSelection());
+        const bool is_copy  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_C)) || (is_ctrl_key_only  && IsKeyPressedMap(ImGuiKey_Insert))) && !is_password && (!is_multiline || edit_state.HasSelection());
+        const bool is_paste = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_V)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Insert))) && is_editable;
+        const bool is_undo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Z)) && is_editable && is_undoable);
+        const bool is_redo  = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Y)) || (is_osx_shift_shortcut && IsKeyPressedMap(ImGuiKey_Z))) && is_editable && is_undoable;
+
+        if (IsKeyPressedMap(ImGuiKey_LeftArrow))                        { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINESTART : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDLEFT : STB_TEXTEDIT_K_LEFT) | k_mask); }
+        else if (IsKeyPressedMap(ImGuiKey_RightArrow))                  { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINEEND : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDRIGHT : STB_TEXTEDIT_K_RIGHT) | k_mask); }
+        else if (IsKeyPressedMap(ImGuiKey_UpArrow) && is_multiline)     { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMax(draw_window->Scroll.y - g.FontSize, 0.0f)); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTSTART : STB_TEXTEDIT_K_UP) | k_mask); }
+        else if (IsKeyPressedMap(ImGuiKey_DownArrow) && is_multiline)   { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMin(draw_window->Scroll.y + g.FontSize, GetScrollMaxY())); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTEND : STB_TEXTEDIT_K_DOWN) | k_mask); }
+        else if (IsKeyPressedMap(ImGuiKey_Home))                        { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
+        else if (IsKeyPressedMap(ImGuiKey_End))                         { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
+        else if (IsKeyPressedMap(ImGuiKey_Delete) && is_editable)       { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
+        else if (IsKeyPressedMap(ImGuiKey_Backspace) && is_editable)
+        {
+            if (!edit_state.HasSelection())
+            {
+                if (is_wordmove_key_down) edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT|STB_TEXTEDIT_K_SHIFT);
+                else if (is_osx && io.KeySuper && !io.KeyAlt && !io.KeyCtrl) edit_state.OnKeyPressed(STB_TEXTEDIT_K_LINESTART|STB_TEXTEDIT_K_SHIFT);
+            }
+            edit_state.OnKeyPressed(STB_TEXTEDIT_K_BACKSPACE | k_mask);
+        }
+        else if (IsKeyPressedMap(ImGuiKey_Enter))
+        {
+            bool ctrl_enter_for_new_line = (flags & ImGuiInputTextFlags_CtrlEnterForNewLine) != 0;
+            if (!is_multiline || (ctrl_enter_for_new_line && !io.KeyCtrl) || (!ctrl_enter_for_new_line && io.KeyCtrl))
+            {
+                enter_pressed = clear_active_id = true;
+            }
+            else if (is_editable)
+            {
+                unsigned int c = '\n'; // Insert new line
+                if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
+                    edit_state.OnKeyPressed((int)c);
+            }
+        }
+        else if ((flags & ImGuiInputTextFlags_AllowTabInput) && IsKeyPressedMap(ImGuiKey_Tab) && !io.KeyCtrl && !io.KeyShift && !io.KeyAlt && is_editable)
+        {
+            unsigned int c = '\t'; // Insert TAB
+            if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
+                edit_state.OnKeyPressed((int)c);
+        }
+        else if (IsKeyPressedMap(ImGuiKey_Escape))
+        {
+            clear_active_id = cancel_edit = true;
+        }
+        else if (is_undo || is_redo)
+        {
+            edit_state.OnKeyPressed(is_undo ? STB_TEXTEDIT_K_UNDO : STB_TEXTEDIT_K_REDO);
+            edit_state.ClearSelection();
+        }
+        else if (is_shortcut_key && IsKeyPressedMap(ImGuiKey_A))
+        {
+            edit_state.SelectAll();
+            edit_state.CursorFollow = true;
+        }
+        else if (is_cut || is_copy)
+        {
+            // Cut, Copy
+            if (io.SetClipboardTextFn)
+            {
+                const int ib = edit_state.HasSelection() ? ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end) : 0;
+                const int ie = edit_state.HasSelection() ? ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end) : edit_state.CurLenW;
+                edit_state.TempBuffer.resize((ie-ib) * 4 + 1);
+                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data+ib, edit_state.TextW.Data+ie);
+                SetClipboardText(edit_state.TempBuffer.Data);
+            }
+            if (is_cut)
+            {
+                if (!edit_state.HasSelection())
+                    edit_state.SelectAll();
+                edit_state.CursorFollow = true;
+                stb_textedit_cut(&edit_state, &edit_state.StbState);
+            }
+        }
+        else if (is_paste)
+        {
+            if (const char* clipboard = GetClipboardText())
+            {
+                // Filter pasted buffer
+                const int clipboard_len = (int)strlen(clipboard);
+                ImWchar* clipboard_filtered = (ImWchar*)ImGui::MemAlloc((clipboard_len+1) * sizeof(ImWchar));
+                int clipboard_filtered_len = 0;
+                for (const char* s = clipboard; *s; )
+                {
+                    unsigned int c;
+                    s += ImTextCharFromUtf8(&c, s, NULL);
+                    if (c == 0)
+                        break;
+                    if (c >= 0x10000 || !InputTextFilterCharacter(&c, flags, callback, callback_user_data))
+                        continue;
+                    clipboard_filtered[clipboard_filtered_len++] = (ImWchar)c;
+                }
+                clipboard_filtered[clipboard_filtered_len] = 0;
+                if (clipboard_filtered_len > 0) // If everything was filtered, ignore the pasting operation
+                {
+                    stb_textedit_paste(&edit_state, &edit_state.StbState, clipboard_filtered, clipboard_filtered_len);
+                    edit_state.CursorFollow = true;
+                }
+                ImGui::MemFree(clipboard_filtered);
+            }
+        }
+    }
+
+    if (g.ActiveId == id)
+    {
+        const char* apply_new_text = NULL;
+        int apply_new_text_length = 0;
+        if (cancel_edit)
+        {
+            // Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
+            if (is_editable && strcmp(buf, edit_state.InitialText.Data) != 0)
+            {
+                apply_new_text = edit_state.InitialText.Data;
+                apply_new_text_length = edit_state.InitialText.Size - 1;
+            }
+        }
+
+        // When using 'ImGuiInputTextFlags_EnterReturnsTrue' as a special case we reapply the live buffer back to the input buffer before clearing ActiveId, even though strictly speaking it wasn't modified on this frame.
+        // If we didn't do that, code like InputInt() with ImGuiInputTextFlags_EnterReturnsTrue would fail. Also this allows the user to use InputText() with ImGuiInputTextFlags_EnterReturnsTrue without maintaining any user-side storage.
+        bool apply_edit_back_to_user_buffer = !cancel_edit || (enter_pressed && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
+        if (apply_edit_back_to_user_buffer)
+        {
+            // Apply new value immediately - copy modified buffer back
+            // Note that as soon as the input box is active, the in-widget value gets priority over any underlying modification of the input buffer
+            // FIXME: We actually always render 'buf' when calling DrawList->AddText, making the comment above incorrect.
+            // FIXME-OPT: CPU waste to do this every time the widget is active, should mark dirty state from the stb_textedit callbacks.
+            if (is_editable)
+            {
+                edit_state.TempBuffer.resize(edit_state.TextW.Size * 4 + 1);
+                ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data, NULL);
+            }
+
+            // User callback
+            if ((flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_CallbackHistory | ImGuiInputTextFlags_CallbackAlways)) != 0)
+            {
+                IM_ASSERT(callback != NULL);
+
+                // The reason we specify the usage semantic (Completion/History) is that Completion needs to disable keyboard TABBING at the moment.
+                ImGuiInputTextFlags event_flag = 0;
+                ImGuiKey event_key = ImGuiKey_COUNT;
+                if ((flags & ImGuiInputTextFlags_CallbackCompletion) != 0 && IsKeyPressedMap(ImGuiKey_Tab))
+                {
+                    event_flag = ImGuiInputTextFlags_CallbackCompletion;
+                    event_key = ImGuiKey_Tab;
+                }
+                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_UpArrow))
+                {
+                    event_flag = ImGuiInputTextFlags_CallbackHistory;
+                    event_key = ImGuiKey_UpArrow;
+                }
+                else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_DownArrow))
+                {
+                    event_flag = ImGuiInputTextFlags_CallbackHistory;
+                    event_key = ImGuiKey_DownArrow;
+                }
+                else if (flags & ImGuiInputTextFlags_CallbackAlways)
+                    event_flag = ImGuiInputTextFlags_CallbackAlways;
+
+                if (event_flag)
+                {
+                    ImGuiInputTextCallbackData callback_data;
+                    memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
+                    callback_data.EventFlag = event_flag;
+                    callback_data.Flags = flags;
+                    callback_data.UserData = callback_user_data;
+
+                    callback_data.EventKey = event_key;
+                    callback_data.Buf = edit_state.TempBuffer.Data;
+                    callback_data.BufTextLen = edit_state.CurLenA;
+                    callback_data.BufSize = edit_state.BufCapacityA;
+                    callback_data.BufDirty = false;
+
+                    // We have to convert from wchar-positions to UTF-8-positions, which can be pretty slow (an incentive to ditch the ImWchar buffer, see https://github.com/nothings/stb/issues/188)
+                    ImWchar* text = edit_state.TextW.Data;
+                    const int utf8_cursor_pos = callback_data.CursorPos = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.cursor);
+                    const int utf8_selection_start = callback_data.SelectionStart = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_start);
+                    const int utf8_selection_end = callback_data.SelectionEnd = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_end);
+
+                    // Call user code
+                    callback(&callback_data);
+
+                    // Read back what user may have modified
+                    IM_ASSERT(callback_data.Buf == edit_state.TempBuffer.Data);  // Invalid to modify those fields
+                    IM_ASSERT(callback_data.BufSize == edit_state.BufCapacityA);
+                    IM_ASSERT(callback_data.Flags == flags);
+                    if (callback_data.CursorPos != utf8_cursor_pos)            { edit_state.StbState.cursor = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.CursorPos); edit_state.CursorFollow = true; }
+                    if (callback_data.SelectionStart != utf8_selection_start)  { edit_state.StbState.select_start = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionStart); }
+                    if (callback_data.SelectionEnd != utf8_selection_end)      { edit_state.StbState.select_end = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionEnd); }
+                    if (callback_data.BufDirty)
+                    {
+                        IM_ASSERT(callback_data.BufTextLen == (int)strlen(callback_data.Buf)); // You need to maintain BufTextLen if you change the text!
+                        if (callback_data.BufTextLen > backup_current_text_length && is_resizable)
+                            edit_state.TextW.resize(edit_state.TextW.Size + (callback_data.BufTextLen - backup_current_text_length));
+                        edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, callback_data.Buf, NULL);
+                        edit_state.CurLenA = callback_data.BufTextLen;  // Assume correct length and valid UTF-8 from user, saves us an extra strlen()
+                        edit_state.CursorAnimReset();
+                    }
+                }
+            }
+
+            // Will copy result string if modified
+            if (is_editable && strcmp(edit_state.TempBuffer.Data, buf) != 0)
+            {
+                apply_new_text = edit_state.TempBuffer.Data;
+                apply_new_text_length = edit_state.CurLenA;
+            }
+        }
+
+        // Copy result to user buffer
+        if (apply_new_text)
+        {
+            IM_ASSERT(apply_new_text_length >= 0);
+            if (backup_current_text_length != apply_new_text_length && is_resizable)
+            {
+                ImGuiInputTextCallbackData callback_data;
+                callback_data.EventFlag = ImGuiInputTextFlags_CallbackResize;
+                callback_data.Flags = flags;
+                callback_data.Buf = buf;
+                callback_data.BufTextLen = apply_new_text_length;
+                callback_data.BufSize = ImMax(buf_size, apply_new_text_length + 1);
+                callback_data.UserData = callback_user_data;
+                callback(&callback_data);
+                buf = callback_data.Buf;
+                buf_size = callback_data.BufSize;
+                apply_new_text_length = ImMin(callback_data.BufTextLen, buf_size - 1);
+                IM_ASSERT(apply_new_text_length <= buf_size);
+            }
+
+            // If the underlying buffer resize was denied or not carried to the next frame, apply_new_text_length+1 may be >= buf_size.
+            ImStrncpy(buf, edit_state.TempBuffer.Data, ImMin(apply_new_text_length + 1, buf_size));
+            value_changed = true;
+        }
+
+        // Clear temporary user storage
+        edit_state.UserFlags = 0;
+        edit_state.UserCallback = NULL;
+        edit_state.UserCallbackData = NULL;
+    }
+
+    // Release active ID at the end of the function (so e.g. pressing Return still does a final application of the value)
+    if (clear_active_id && g.ActiveId == id)
+        ClearActiveID();
+
+    // Render
+    // Select which buffer we are going to display. When ImGuiInputTextFlags_NoLiveEdit is set 'buf' might still be the old value. We set buf to NULL to prevent accidental usage from now on.
+    const char* buf_display = (g.ActiveId == id && is_editable) ? edit_state.TempBuffer.Data : buf; buf = NULL;
+
+    // Set upper limit of single-line InputTextEx() at 2 million characters strings. The current pathological worst case is a long line
+    // without any carriage return, which would makes ImFont::RenderText() reserve too many vertices and probably crash. Avoid it altogether.
+    // Note that we only use this limit on single-line InputText(), so a pathologically large line on a InputTextMultiline() would still crash.
+    const int buf_display_max_length = 2 * 1024 * 1024;
+
+    if (!is_multiline)
+    {
+        RenderNavHighlight(frame_bb, id);
+        RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
+    }
+
+    const ImVec4 clip_rect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + size.x, frame_bb.Min.y + size.y); // Not using frame_bb.Max because we have adjusted size
+    ImVec2 render_pos = is_multiline ? draw_window->DC.CursorPos : frame_bb.Min + style.FramePadding;
+    ImVec2 text_size(0.f, 0.f);
+    const bool is_currently_scrolling = (edit_state.ID == id && is_multiline && g.ActiveId == draw_window->GetIDNoKeepAlive("#SCROLLY"));
+    if (g.ActiveId == id || is_currently_scrolling)
+    {
+        edit_state.CursorAnim += io.DeltaTime;
+
+        // This is going to be messy. We need to:
+        // - Display the text (this alone can be more easily clipped)
+        // - Handle scrolling, highlight selection, display cursor (those all requires some form of 1d->2d cursor position calculation)
+        // - Measure text height (for scrollbar)
+        // We are attempting to do most of that in **one main pass** to minimize the computation cost (non-negligible for large amount of text) + 2nd pass for selection rendering (we could merge them by an extra refactoring effort)
+        // FIXME: This should occur on buf_display but we'd need to maintain cursor/select_start/select_end for UTF-8.
+        const ImWchar* text_begin = edit_state.TextW.Data;
+        ImVec2 cursor_offset, select_start_offset;
+
+        {
+            // Count lines + find lines numbers straddling 'cursor' and 'select_start' position.
+            const ImWchar* searches_input_ptr[2];
+            searches_input_ptr[0] = text_begin + edit_state.StbState.cursor;
+            searches_input_ptr[1] = NULL;
+            int searches_remaining = 1;
+            int searches_result_line_number[2] = { -1, -999 };
+            if (edit_state.StbState.select_start != edit_state.StbState.select_end)
+            {
+                searches_input_ptr[1] = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
+                searches_result_line_number[1] = -1;
+                searches_remaining++;
+            }
+
+            // Iterate all lines to find our line numbers
+            // In multi-line mode, we never exit the loop until all lines are counted, so add one extra to the searches_remaining counter.
+            searches_remaining += is_multiline ? 1 : 0;
+            int line_count = 0;
+            for (const ImWchar* s = text_begin; *s != 0; s++)
+                if (*s == '\n')
+                {
+                    line_count++;
+                    if (searches_result_line_number[0] == -1 && s >= searches_input_ptr[0]) { searches_result_line_number[0] = line_count; if (--searches_remaining <= 0) break; }
+                    if (searches_result_line_number[1] == -1 && s >= searches_input_ptr[1]) { searches_result_line_number[1] = line_count; if (--searches_remaining <= 0) break; }
+                }
+            line_count++;
+            if (searches_result_line_number[0] == -1) searches_result_line_number[0] = line_count;
+            if (searches_result_line_number[1] == -1) searches_result_line_number[1] = line_count;
+
+            // Calculate 2d position by finding the beginning of the line and measuring distance
+            cursor_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[0], text_begin), searches_input_ptr[0]).x;
+            cursor_offset.y = searches_result_line_number[0] * g.FontSize;
+            if (searches_result_line_number[1] >= 0)
+            {
+                select_start_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[1], text_begin), searches_input_ptr[1]).x;
+                select_start_offset.y = searches_result_line_number[1] * g.FontSize;
+            }
+
+            // Store text height (note that we haven't calculated text width at all, see GitHub issues #383, #1224)
+            if (is_multiline)
+                text_size = ImVec2(size.x, line_count * g.FontSize);
+        }
+
+        // Scroll
+        if (edit_state.CursorFollow)
+        {
+            // Horizontal scroll in chunks of quarter width
+            if (!(flags & ImGuiInputTextFlags_NoHorizontalScroll))
+            {
+                const float scroll_increment_x = size.x * 0.25f;
+                if (cursor_offset.x < edit_state.ScrollX)
+                    edit_state.ScrollX = (float)(int)ImMax(0.0f, cursor_offset.x - scroll_increment_x);
+                else if (cursor_offset.x - size.x >= edit_state.ScrollX)
+                    edit_state.ScrollX = (float)(int)(cursor_offset.x - size.x + scroll_increment_x);
+            }
+            else
+            {
+                edit_state.ScrollX = 0.0f;
+            }
+
+            // Vertical scroll
+            if (is_multiline)
+            {
+                float scroll_y = draw_window->Scroll.y;
+                if (cursor_offset.y - g.FontSize < scroll_y)
+                    scroll_y = ImMax(0.0f, cursor_offset.y - g.FontSize);
+                else if (cursor_offset.y - size.y >= scroll_y)
+                    scroll_y = cursor_offset.y - size.y;
+                draw_window->DC.CursorPos.y += (draw_window->Scroll.y - scroll_y);   // To avoid a frame of lag
+                draw_window->Scroll.y = scroll_y;
+                render_pos.y = draw_window->DC.CursorPos.y;
+            }
+        }
+        edit_state.CursorFollow = false;
+        const ImVec2 render_scroll = ImVec2(edit_state.ScrollX, 0.0f);
+
+        // Draw selection
+        if (edit_state.StbState.select_start != edit_state.StbState.select_end)
+        {
+            const ImWchar* text_selected_begin = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
+            const ImWchar* text_selected_end = text_begin + ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end);
+
+            float bg_offy_up = is_multiline ? 0.0f : -1.0f;    // FIXME: those offsets should be part of the style? they don't play so well with multi-line selection.
+            float bg_offy_dn = is_multiline ? 0.0f : 2.0f;
+            ImU32 bg_color = GetColorU32(ImGuiCol_TextSelectedBg);
+            ImVec2 rect_pos = render_pos + select_start_offset - render_scroll;
+            for (const ImWchar* p = text_selected_begin; p < text_selected_end; )
+            {
+                if (rect_pos.y > clip_rect.w + g.FontSize)
+                    break;
+                if (rect_pos.y < clip_rect.y)
+                {
+                    while (p < text_selected_end)
+                        if (*p++ == '\n')
+                            break;
+                }
+                else
+                {
+                    ImVec2 rect_size = InputTextCalcTextSizeW(p, text_selected_end, &p, NULL, true);
+                    if (rect_size.x <= 0.0f) rect_size.x = (float)(int)(g.Font->GetCharAdvance((unsigned short)' ') * 0.50f); // So we can see selected empty lines
+                    ImRect rect(rect_pos + ImVec2(0.0f, bg_offy_up - g.FontSize), rect_pos +ImVec2(rect_size.x, bg_offy_dn));
+                    rect.ClipWith(clip_rect);
+                    if (rect.Overlaps(clip_rect))
+                        draw_window->DrawList->AddRectFilled(rect.Min, rect.Max, bg_color);
+                }
+                rect_pos.x = render_pos.x - render_scroll.x;
+                rect_pos.y += g.FontSize;
+            }
+        }
+
+        const int buf_display_len = edit_state.CurLenA;
+        if (is_multiline || buf_display_len < buf_display_max_length)
+            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos - render_scroll, GetColorU32(ImGuiCol_Text), buf_display, buf_display + buf_display_len, 0.0f, is_multiline ? NULL : &clip_rect);
+
+        // Draw blinking cursor
+        bool cursor_is_visible = (!g.IO.ConfigCursorBlink) || (g.InputTextState.CursorAnim <= 0.0f) || ImFmod(g.InputTextState.CursorAnim, 1.20f) <= 0.80f;
+        ImVec2 cursor_screen_pos = render_pos + cursor_offset - render_scroll;
+        ImRect cursor_screen_rect(cursor_screen_pos.x, cursor_screen_pos.y-g.FontSize+0.5f, cursor_screen_pos.x+1.0f, cursor_screen_pos.y-1.5f);
+        if (cursor_is_visible && cursor_screen_rect.Overlaps(clip_rect))
+            draw_window->DrawList->AddLine(cursor_screen_rect.Min, cursor_screen_rect.GetBL(), GetColorU32(ImGuiCol_Text));
+
+        // Notify OS of text input position for advanced IME (-1 x offset so that Windows IME can cover our cursor. Bit of an extra nicety.)
+        if (is_editable)
+            g.PlatformImePos = ImVec2(cursor_screen_pos.x - 1, cursor_screen_pos.y - g.FontSize);
+    }
+    else
+    {
+        // Render text only
+        const char* buf_end = NULL;
+        if (is_multiline)
+            text_size = ImVec2(size.x, InputTextCalcTextLenAndLineCount(buf_display, &buf_end) * g.FontSize); // We don't need width
+        else
+            buf_end = buf_display + strlen(buf_display);
+        if (is_multiline || (buf_end - buf_display) < buf_display_max_length)
+            draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos, GetColorU32(ImGuiCol_Text), buf_display, buf_end, 0.0f, is_multiline ? NULL : &clip_rect);
+    }
+
+    if (is_multiline)
+    {
+        Dummy(text_size + ImVec2(0.0f, g.FontSize)); // Always add room to scroll an extra line
+        EndChildFrame();
+        EndGroup();
+    }
+
+    if (is_password)
+        PopFont();
+
+    // Log as text
+    if (g.LogEnabled && !is_password)
+        LogRenderedText(&render_pos, buf_display, NULL);
+
+    if (label_size.x > 0)
+        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
+
+    if (value_changed)
+        MarkItemEdited(id);
+
+    if ((flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0)
+        return enter_pressed;
+    else
+        return value_changed;
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Color Editor / Picker
+// - ColorEdit3()
+// - ColorEdit4()
+// - ColorPicker3()
+// - RenderColorRectWithAlphaCheckerboard() [Internal]
+// - ColorPicker4()
+// - ColorButton()
+// - SetColorEditOptions()
+// - ColorTooltip() [Internal]
+// - ColorEditOptionsPopup() [Internal]
+// - ColorPickerOptionsPopup() [Internal]
+//-------------------------------------------------------------------------
+
+bool ImGui::ColorEdit3(const char* label, float col[3], ImGuiColorEditFlags flags)
+{
+    return ColorEdit4(label, col, flags | ImGuiColorEditFlags_NoAlpha);
+}
+
+// Edit colors components (each component in 0.0f..1.0f range).
+// See enum ImGuiColorEditFlags_ for available options. e.g. Only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
+// With typical options: Left-click on colored square to open color picker. Right-click to open option menu. CTRL-Click over input fields to edit them and TAB to go to next item.
+bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+    const float square_sz = GetFrameHeight();
+    const float w_extra = (flags & ImGuiColorEditFlags_NoSmallPreview) ? 0.0f : (square_sz + style.ItemInnerSpacing.x);
+    const float w_items_all = CalcItemWidth() - w_extra;
+    const char* label_display_end = FindRenderedTextEnd(label);
+
+    BeginGroup();
+    PushID(label);
+
+    // If we're not showing any slider there's no point in doing any HSV conversions
+    const ImGuiColorEditFlags flags_untouched = flags;
+    if (flags & ImGuiColorEditFlags_NoInputs)
+        flags = (flags & (~ImGuiColorEditFlags__InputsMask)) | ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_NoOptions;
+
+    // Context menu: display and modify options (before defaults are applied)
+    if (!(flags & ImGuiColorEditFlags_NoOptions))
+        ColorEditOptionsPopup(col, flags);
+
+    // Read stored options
+    if (!(flags & ImGuiColorEditFlags__InputsMask))
+        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__InputsMask);
+    if (!(flags & ImGuiColorEditFlags__DataTypeMask))
+        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__DataTypeMask);
+    if (!(flags & ImGuiColorEditFlags__PickerMask))
+        flags |= (g.ColorEditOptions & ImGuiColorEditFlags__PickerMask);
+    flags |= (g.ColorEditOptions & ~(ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask));
+
+    const bool alpha = (flags & ImGuiColorEditFlags_NoAlpha) == 0;
+    const bool hdr = (flags & ImGuiColorEditFlags_HDR) != 0;
+    const int components = alpha ? 4 : 3;
+
+    // Convert to the formats we need
+    float f[4] = { col[0], col[1], col[2], alpha ? col[3] : 1.0f };
+    if (flags & ImGuiColorEditFlags_HSV)
+        ColorConvertRGBtoHSV(f[0], f[1], f[2], f[0], f[1], f[2]);
+    int i[4] = { IM_F32_TO_INT8_UNBOUND(f[0]), IM_F32_TO_INT8_UNBOUND(f[1]), IM_F32_TO_INT8_UNBOUND(f[2]), IM_F32_TO_INT8_UNBOUND(f[3]) };
+
+    bool value_changed = false;
+    bool value_changed_as_float = false;
+
+    if ((flags & (ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_HSV)) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
+    {
+        // RGB/HSV 0..255 Sliders
+        const float w_item_one  = ImMax(1.0f, (float)(int)((w_items_all - (style.ItemInnerSpacing.x) * (components-1)) / (float)components));
+        const float w_item_last = ImMax(1.0f, (float)(int)(w_items_all - (w_item_one + style.ItemInnerSpacing.x) * (components-1)));
+
+        const bool hide_prefix = (w_item_one <= CalcTextSize((flags & ImGuiColorEditFlags_Float) ? "M:0.000" : "M:000").x);
+        const char* ids[4] = { "##X", "##Y", "##Z", "##W" };
+        const char* fmt_table_int[3][4] =
+        {
+            {   "%3d",   "%3d",   "%3d",   "%3d" }, // Short display
+            { "R:%3d", "G:%3d", "B:%3d", "A:%3d" }, // Long display for RGBA
+            { "H:%3d", "S:%3d", "V:%3d", "A:%3d" }  // Long display for HSVA
+        };
+        const char* fmt_table_float[3][4] =
+        {
+            {   "%0.3f",   "%0.3f",   "%0.3f",   "%0.3f" }, // Short display
+            { "R:%0.3f", "G:%0.3f", "B:%0.3f", "A:%0.3f" }, // Long display for RGBA
+            { "H:%0.3f", "S:%0.3f", "V:%0.3f", "A:%0.3f" }  // Long display for HSVA
+        };
+        const int fmt_idx = hide_prefix ? 0 : (flags & ImGuiColorEditFlags_HSV) ? 2 : 1;
+
+        PushItemWidth(w_item_one);
+        for (int n = 0; n < components; n++)
+        {
+            if (n > 0)
+                SameLine(0, style.ItemInnerSpacing.x);
+            if (n + 1 == components)
+                PushItemWidth(w_item_last);
+            if (flags & ImGuiColorEditFlags_Float)
+                value_changed = value_changed_as_float = value_changed | DragFloat(ids[n], &f[n], 1.0f/255.0f, 0.0f, hdr ? 0.0f : 1.0f, fmt_table_float[fmt_idx][n]);
+            else
+                value_changed |= DragInt(ids[n], &i[n], 1.0f, 0, hdr ? 0 : 255, fmt_table_int[fmt_idx][n]);
+            if (!(flags & ImGuiColorEditFlags_NoOptions))
+                OpenPopupOnItemClick("context");
+        }
+        PopItemWidth();
+        PopItemWidth();
+    }
+    else if ((flags & ImGuiColorEditFlags_HEX) != 0 && (flags & ImGuiColorEditFlags_NoInputs) == 0)
+    {
+        // RGB Hexadecimal Input
+        char buf[64];
+        if (alpha)
+            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255), ImClamp(i[3],0,255));
+        else
+            ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X", ImClamp(i[0],0,255), ImClamp(i[1],0,255), ImClamp(i[2],0,255));
+        PushItemWidth(w_items_all);
+        if (InputText("##Text", buf, IM_ARRAYSIZE(buf), ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase))
+        {
+            value_changed = true;
+            char* p = buf;
+            while (*p == '#' || ImCharIsBlankA(*p))
+                p++;
+            i[0] = i[1] = i[2] = i[3] = 0;
+            if (alpha)
+                sscanf(p, "%02X%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2], (unsigned int*)&i[3]); // Treat at unsigned (%X is unsigned)
+            else
+                sscanf(p, "%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2]);
+        }
+        if (!(flags & ImGuiColorEditFlags_NoOptions))
+            OpenPopupOnItemClick("context");
+        PopItemWidth();
+    }
+
+    ImGuiWindow* picker_active_window = NULL;
+    if (!(flags & ImGuiColorEditFlags_NoSmallPreview))
+    {
+        if (!(flags & ImGuiColorEditFlags_NoInputs))
+            SameLine(0, style.ItemInnerSpacing.x);
+
+        const ImVec4 col_v4(col[0], col[1], col[2], alpha ? col[3] : 1.0f);
+        if (ColorButton("##ColorButton", col_v4, flags))
+        {
+            if (!(flags & ImGuiColorEditFlags_NoPicker))
+            {
+                // Store current color and open a picker
+                g.ColorPickerRef = col_v4;
+                OpenPopup("picker");
+                SetNextWindowPos(window->DC.LastItemRect.GetBL() + ImVec2(-1,style.ItemSpacing.y));
+            }
+        }
+        if (!(flags & ImGuiColorEditFlags_NoOptions))
+            OpenPopupOnItemClick("context");
+
+        if (BeginPopup("picker"))
+        {
+            picker_active_window = g.CurrentWindow;
+            if (label != label_display_end)
+            {
+                TextUnformatted(label, label_display_end);
+                Separator();
+            }
+            ImGuiColorEditFlags picker_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags__PickerMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaBar;
+            ImGuiColorEditFlags picker_flags = (flags_untouched & picker_flags_to_forward) | ImGuiColorEditFlags__InputsMask | ImGuiColorEditFlags_NoLabel | ImGuiColorEditFlags_AlphaPreviewHalf;
+            PushItemWidth(square_sz * 12.0f); // Use 256 + bar sizes?
+            value_changed |= ColorPicker4("##picker", col, picker_flags, &g.ColorPickerRef.x);
+            PopItemWidth();
+            EndPopup();
+        }
+    }
+
+    if (label != label_display_end && !(flags & ImGuiColorEditFlags_NoLabel))
+    {
+        SameLine(0, style.ItemInnerSpacing.x);
+        TextUnformatted(label, label_display_end);
+    }
+
+    // Convert back
+    if (picker_active_window == NULL)
+    {
+        if (!value_changed_as_float)
+            for (int n = 0; n < 4; n++)
+                f[n] = i[n] / 255.0f;
+        if (flags & ImGuiColorEditFlags_HSV)
+            ColorConvertHSVtoRGB(f[0], f[1], f[2], f[0], f[1], f[2]);
+        if (value_changed)
+        {
+            col[0] = f[0];
+            col[1] = f[1];
+            col[2] = f[2];
+            if (alpha)
+                col[3] = f[3];
+        }
+    }
+
+    PopID();
+    EndGroup();
+
+    // Drag and Drop Target
+    // NB: The flag test is merely an optional micro-optimization, BeginDragDropTarget() does the same test.
+    if ((window->DC.LastItemStatusFlags & ImGuiItemStatusFlags_HoveredRect) && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropTarget())
+    {
+        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F))
+        {
+            memcpy((float*)col, payload->Data, sizeof(float) * 3);
+            value_changed = true;
+        }
+        if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F))
+        {
+            memcpy((float*)col, payload->Data, sizeof(float) * components);
+            value_changed = true;
+        }
+        EndDragDropTarget();
+    }
+
+    // When picker is being actively used, use its active id so IsItemActive() will function on ColorEdit4().
+    if (picker_active_window && g.ActiveId != 0 && g.ActiveIdWindow == picker_active_window)
+        window->DC.LastItemId = g.ActiveId;
+
+    if (value_changed)
+        MarkItemEdited(window->DC.LastItemId);
+
+    return value_changed;
+}
+
+bool ImGui::ColorPicker3(const char* label, float col[3], ImGuiColorEditFlags flags)
+{
+    float col4[4] = { col[0], col[1], col[2], 1.0f };
+    if (!ColorPicker4(label, col4, flags | ImGuiColorEditFlags_NoAlpha))
+        return false;
+    col[0] = col4[0]; col[1] = col4[1]; col[2] = col4[2];
+    return true;
+}
+
+static inline ImU32 ImAlphaBlendColor(ImU32 col_a, ImU32 col_b)
+{
+    float t = ((col_b >> IM_COL32_A_SHIFT) & 0xFF) / 255.f;
+    int r = ImLerp((int)(col_a >> IM_COL32_R_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_R_SHIFT) & 0xFF, t);
+    int g = ImLerp((int)(col_a >> IM_COL32_G_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_G_SHIFT) & 0xFF, t);
+    int b = ImLerp((int)(col_a >> IM_COL32_B_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_B_SHIFT) & 0xFF, t);
+    return IM_COL32(r, g, b, 0xFF);
+}
+
+// Helper for ColorPicker4()
+// NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Caller currently responsible for avoiding that.
+// I spent a non reasonable amount of time trying to getting this right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and offsets, and eventually gave up... probably more reasonable to disable rounding alltogether.
+void ImGui::RenderColorRectWithAlphaCheckerboard(ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, int rounding_corners_flags)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF)
+    {
+        ImU32 col_bg1 = GetColorU32(ImAlphaBlendColor(IM_COL32(204,204,204,255), col));
+        ImU32 col_bg2 = GetColorU32(ImAlphaBlendColor(IM_COL32(128,128,128,255), col));
+        window->DrawList->AddRectFilled(p_min, p_max, col_bg1, rounding, rounding_corners_flags);
+
+        int yi = 0;
+        for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++)
+        {
+            float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y);
+            if (y2 <= y1)
+                continue;
+            for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f)
+            {
+                float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x);
+                if (x2 <= x1)
+                    continue;
+                int rounding_corners_flags_cell = 0;
+                if (y1 <= p_min.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopRight; }
+                if (y2 >= p_max.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotRight; }
+                rounding_corners_flags_cell &= rounding_corners_flags;
+                window->DrawList->AddRectFilled(ImVec2(x1,y1), ImVec2(x2,y2), col_bg2, rounding_corners_flags_cell ? rounding : 0.0f, rounding_corners_flags_cell);
+            }
+        }
+    }
+    else
+    {
+        window->DrawList->AddRectFilled(p_min, p_max, col, rounding, rounding_corners_flags);
+    }
+}
+
+// Helper for ColorPicker4()
+static void RenderArrowsForVerticalBar(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, float bar_w)
+{
+    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x + 1,         pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Right, IM_COL32_BLACK);
+    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + half_sz.x,             pos.y), half_sz,                              ImGuiDir_Right, IM_COL32_WHITE);
+    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x - 1, pos.y), ImVec2(half_sz.x + 2, half_sz.y + 1), ImGuiDir_Left,  IM_COL32_BLACK);
+    ImGui::RenderArrowPointingAt(draw_list, ImVec2(pos.x + bar_w - half_sz.x,     pos.y), half_sz,                              ImGuiDir_Left,  IM_COL32_WHITE);
+}
+
+// Note: ColorPicker4() only accesses 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
+// FIXME: we adjust the big color square height based on item width, which may cause a flickering feedback loop (if automatic height makes a vertical scrollbar appears, affecting automatic width..)
+bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags flags, const float* ref_col)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = GetCurrentWindow();
+    ImDrawList* draw_list = window->DrawList;
+
+    ImGuiStyle& style = g.Style;
+    ImGuiIO& io = g.IO;
+
+    PushID(label);
+    BeginGroup();
+
+    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
+        flags |= ImGuiColorEditFlags_NoSmallPreview;
+
+    // Context menu: display and store options.
+    if (!(flags & ImGuiColorEditFlags_NoOptions))
+        ColorPickerOptionsPopup(col, flags);
+
+    // Read stored options
+    if (!(flags & ImGuiColorEditFlags__PickerMask))
+        flags |= ((g.ColorEditOptions & ImGuiColorEditFlags__PickerMask) ? g.ColorEditOptions : ImGuiColorEditFlags__OptionsDefault) & ImGuiColorEditFlags__PickerMask;
+    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask))); // Check that only 1 is selected
+    if (!(flags & ImGuiColorEditFlags_NoOptions))
+        flags |= (g.ColorEditOptions & ImGuiColorEditFlags_AlphaBar);
+
+    // Setup
+    int components = (flags & ImGuiColorEditFlags_NoAlpha) ? 3 : 4;
+    bool alpha_bar = (flags & ImGuiColorEditFlags_AlphaBar) && !(flags & ImGuiColorEditFlags_NoAlpha);
+    ImVec2 picker_pos = window->DC.CursorPos;
+    float square_sz = GetFrameHeight();
+    float bars_width = square_sz; // Arbitrary smallish width of Hue/Alpha picking bars
+    float sv_picker_size = ImMax(bars_width * 1, CalcItemWidth() - (alpha_bar ? 2 : 1) * (bars_width + style.ItemInnerSpacing.x)); // Saturation/Value picking box
+    float bar0_pos_x = picker_pos.x + sv_picker_size + style.ItemInnerSpacing.x;
+    float bar1_pos_x = bar0_pos_x + bars_width + style.ItemInnerSpacing.x;
+    float bars_triangles_half_sz = (float)(int)(bars_width * 0.20f);
+
+    float backup_initial_col[4];
+    memcpy(backup_initial_col, col, components * sizeof(float));
+
+    float wheel_thickness = sv_picker_size * 0.08f;
+    float wheel_r_outer = sv_picker_size * 0.50f;
+    float wheel_r_inner = wheel_r_outer - wheel_thickness;
+    ImVec2 wheel_center(picker_pos.x + (sv_picker_size + bars_width)*0.5f, picker_pos.y + sv_picker_size*0.5f);
+
+    // Note: the triangle is displayed rotated with triangle_pa pointing to Hue, but most coordinates stays unrotated for logic.
+    float triangle_r = wheel_r_inner - (int)(sv_picker_size * 0.027f);
+    ImVec2 triangle_pa = ImVec2(triangle_r, 0.0f); // Hue point.
+    ImVec2 triangle_pb = ImVec2(triangle_r * -0.5f, triangle_r * -0.866025f); // Black point.
+    ImVec2 triangle_pc = ImVec2(triangle_r * -0.5f, triangle_r * +0.866025f); // White point.
+
+    float H,S,V;
+    ColorConvertRGBtoHSV(col[0], col[1], col[2], H, S, V);
+
+    bool value_changed = false, value_changed_h = false, value_changed_sv = false;
+
+    PushItemFlag(ImGuiItemFlags_NoNav, true);
+    if (flags & ImGuiColorEditFlags_PickerHueWheel)
+    {
+        // Hue wheel + SV triangle logic
+        InvisibleButton("hsv", ImVec2(sv_picker_size + style.ItemInnerSpacing.x + bars_width, sv_picker_size));
+        if (IsItemActive())
+        {
+            ImVec2 initial_off = g.IO.MouseClickedPos[0] - wheel_center;
+            ImVec2 current_off = g.IO.MousePos - wheel_center;
+            float initial_dist2 = ImLengthSqr(initial_off);
+            if (initial_dist2 >= (wheel_r_inner-1)*(wheel_r_inner-1) && initial_dist2 <= (wheel_r_outer+1)*(wheel_r_outer+1))
+            {
+                // Interactive with Hue wheel
+                H = ImAtan2(current_off.y, current_off.x) / IM_PI*0.5f;
+                if (H < 0.0f)
+                    H += 1.0f;
+                value_changed = value_changed_h = true;
+            }
+            float cos_hue_angle = ImCos(-H * 2.0f * IM_PI);
+            float sin_hue_angle = ImSin(-H * 2.0f * IM_PI);
+            if (ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, ImRotate(initial_off, cos_hue_angle, sin_hue_angle)))
+            {
+                // Interacting with SV triangle
+                ImVec2 current_off_unrotated = ImRotate(current_off, cos_hue_angle, sin_hue_angle);
+                if (!ImTriangleContainsPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated))
+                    current_off_unrotated = ImTriangleClosestPoint(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated);
+                float uu, vv, ww;
+                ImTriangleBarycentricCoords(triangle_pa, triangle_pb, triangle_pc, current_off_unrotated, uu, vv, ww);
+                V = ImClamp(1.0f - vv, 0.0001f, 1.0f);
+                S = ImClamp(uu / V, 0.0001f, 1.0f);
+                value_changed = value_changed_sv = true;
+            }
+        }
+        if (!(flags & ImGuiColorEditFlags_NoOptions))
+            OpenPopupOnItemClick("context");
+    }
+    else if (flags & ImGuiColorEditFlags_PickerHueBar)
+    {
+        // SV rectangle logic
+        InvisibleButton("sv", ImVec2(sv_picker_size, sv_picker_size));
+        if (IsItemActive())
+        {
+            S = ImSaturate((io.MousePos.x - picker_pos.x) / (sv_picker_size-1));
+            V = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
+            value_changed = value_changed_sv = true;
+        }
+        if (!(flags & ImGuiColorEditFlags_NoOptions))
+            OpenPopupOnItemClick("context");
+
+        // Hue bar logic
+        SetCursorScreenPos(ImVec2(bar0_pos_x, picker_pos.y));
+        InvisibleButton("hue", ImVec2(bars_width, sv_picker_size));
+        if (IsItemActive())
+        {
+            H = ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
+            value_changed = value_changed_h = true;
+        }
+    }
+
+    // Alpha bar logic
+    if (alpha_bar)
+    {
+        SetCursorScreenPos(ImVec2(bar1_pos_x, picker_pos.y));
+        InvisibleButton("alpha", ImVec2(bars_width, sv_picker_size));
+        if (IsItemActive())
+        {
+            col[3] = 1.0f - ImSaturate((io.MousePos.y - picker_pos.y) / (sv_picker_size-1));
+            value_changed = true;
+        }
+    }
+    PopItemFlag(); // ImGuiItemFlags_NoNav
+
+    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
+    {
+        SameLine(0, style.ItemInnerSpacing.x);
+        BeginGroup();
+    }
+
+    if (!(flags & ImGuiColorEditFlags_NoLabel))
+    {
+        const char* label_display_end = FindRenderedTextEnd(label);
+        if (label != label_display_end)
+        {
+            if ((flags & ImGuiColorEditFlags_NoSidePreview))
+                SameLine(0, style.ItemInnerSpacing.x);
+            TextUnformatted(label, label_display_end);
+        }
+    }
+
+    if (!(flags & ImGuiColorEditFlags_NoSidePreview))
+    {
+        PushItemFlag(ImGuiItemFlags_NoNavDefaultFocus, true);
+        ImVec4 col_v4(col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
+        if ((flags & ImGuiColorEditFlags_NoLabel))
+            Text("Current");
+        ColorButton("##current", col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2));
+        if (ref_col != NULL)
+        {
+            Text("Original");
+            ImVec4 ref_col_v4(ref_col[0], ref_col[1], ref_col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : ref_col[3]);
+            if (ColorButton("##original", ref_col_v4, (flags & (ImGuiColorEditFlags_HDR|ImGuiColorEditFlags_AlphaPreview|ImGuiColorEditFlags_AlphaPreviewHalf|ImGuiColorEditFlags_NoTooltip)), ImVec2(square_sz * 3, square_sz * 2)))
+            {
+                memcpy(col, ref_col, components * sizeof(float));
+                value_changed = true;
+            }
+        }
+        PopItemFlag();
+        EndGroup();
+    }
+
+    // Convert back color to RGB
+    if (value_changed_h || value_changed_sv)
+        ColorConvertHSVtoRGB(H >= 1.0f ? H - 10 * 1e-6f : H, S > 0.0f ? S : 10*1e-6f, V > 0.0f ? V : 1e-6f, col[0], col[1], col[2]);
+
+    // R,G,B and H,S,V slider color editor
+    bool value_changed_fix_hue_wrap = false;
+    if ((flags & ImGuiColorEditFlags_NoInputs) == 0)
+    {
+        PushItemWidth((alpha_bar ? bar1_pos_x : bar0_pos_x) + bars_width - picker_pos.x);
+        ImGuiColorEditFlags sub_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoOptions | ImGuiColorEditFlags_NoSmallPreview | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf;
+        ImGuiColorEditFlags sub_flags = (flags & sub_flags_to_forward) | ImGuiColorEditFlags_NoPicker;
+        if (flags & ImGuiColorEditFlags_RGB || (flags & ImGuiColorEditFlags__InputsMask) == 0)
+            if (ColorEdit4("##rgb", col, sub_flags | ImGuiColorEditFlags_RGB))
+            {
+                // FIXME: Hackily differenciating using the DragInt (ActiveId != 0 && !ActiveIdAllowOverlap) vs. using the InputText or DropTarget.
+                // For the later we don't want to run the hue-wrap canceling code. If you are well versed in HSV picker please provide your input! (See #2050)
+                value_changed_fix_hue_wrap = (g.ActiveId != 0 && !g.ActiveIdAllowOverlap);
+                value_changed = true;
+            }
+        if (flags & ImGuiColorEditFlags_HSV || (flags & ImGuiColorEditFlags__InputsMask) == 0)
+            value_changed |= ColorEdit4("##hsv", col, sub_flags | ImGuiColorEditFlags_HSV);
+        if (flags & ImGuiColorEditFlags_HEX || (flags & ImGuiColorEditFlags__InputsMask) == 0)
+            value_changed |= ColorEdit4("##hex", col, sub_flags | ImGuiColorEditFlags_HEX);
+        PopItemWidth();
+    }
+
+    // Try to cancel hue wrap (after ColorEdit4 call), if any
+    if (value_changed_fix_hue_wrap)
+    {
+        float new_H, new_S, new_V;
+        ColorConvertRGBtoHSV(col[0], col[1], col[2], new_H, new_S, new_V);
+        if (new_H <= 0 && H > 0)
+        {
+            if (new_V <= 0 && V != new_V)
+                ColorConvertHSVtoRGB(H, S, new_V <= 0 ? V * 0.5f : new_V, col[0], col[1], col[2]);
+            else if (new_S <= 0)
+                ColorConvertHSVtoRGB(H, new_S <= 0 ? S * 0.5f : new_S, new_V, col[0], col[1], col[2]);
+        }
+    }
+
+    ImVec4 hue_color_f(1, 1, 1, 1); ColorConvertHSVtoRGB(H, 1, 1, hue_color_f.x, hue_color_f.y, hue_color_f.z);
+    ImU32 hue_color32 = ColorConvertFloat4ToU32(hue_color_f);
+    ImU32 col32_no_alpha = ColorConvertFloat4ToU32(ImVec4(col[0], col[1], col[2], 1.0f));
+
+    const ImU32 hue_colors[6+1] = { IM_COL32(255,0,0,255), IM_COL32(255,255,0,255), IM_COL32(0,255,0,255), IM_COL32(0,255,255,255), IM_COL32(0,0,255,255), IM_COL32(255,0,255,255), IM_COL32(255,0,0,255) };
+    ImVec2 sv_cursor_pos;
+
+    if (flags & ImGuiColorEditFlags_PickerHueWheel)
+    {
+        // Render Hue Wheel
+        const float aeps = 1.5f / wheel_r_outer; // Half a pixel arc length in radians (2pi cancels out).
+        const int segment_per_arc = ImMax(4, (int)wheel_r_outer / 12);
+        for (int n = 0; n < 6; n++)
+        {
+            const float a0 = (n)     /6.0f * 2.0f * IM_PI - aeps;
+            const float a1 = (n+1.0f)/6.0f * 2.0f * IM_PI + aeps;
+            const int vert_start_idx = draw_list->VtxBuffer.Size;
+            draw_list->PathArcTo(wheel_center, (wheel_r_inner + wheel_r_outer)*0.5f, a0, a1, segment_per_arc);
+            draw_list->PathStroke(IM_COL32_WHITE, false, wheel_thickness);
+            const int vert_end_idx = draw_list->VtxBuffer.Size;
+
+            // Paint colors over existing vertices
+            ImVec2 gradient_p0(wheel_center.x + ImCos(a0) * wheel_r_inner, wheel_center.y + ImSin(a0) * wheel_r_inner);
+            ImVec2 gradient_p1(wheel_center.x + ImCos(a1) * wheel_r_inner, wheel_center.y + ImSin(a1) * wheel_r_inner);
+            ShadeVertsLinearColorGradientKeepAlpha(draw_list, vert_start_idx, vert_end_idx, gradient_p0, gradient_p1, hue_colors[n], hue_colors[n+1]);
+        }
+
+        // Render Cursor + preview on Hue Wheel
+        float cos_hue_angle = ImCos(H * 2.0f * IM_PI);
+        float sin_hue_angle = ImSin(H * 2.0f * IM_PI);
+        ImVec2 hue_cursor_pos(wheel_center.x + cos_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f, wheel_center.y + sin_hue_angle * (wheel_r_inner+wheel_r_outer)*0.5f);
+        float hue_cursor_rad = value_changed_h ? wheel_thickness * 0.65f : wheel_thickness * 0.55f;
+        int hue_cursor_segments = ImClamp((int)(hue_cursor_rad / 1.4f), 9, 32);
+        draw_list->AddCircleFilled(hue_cursor_pos, hue_cursor_rad, hue_color32, hue_cursor_segments);
+        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad+1, IM_COL32(128,128,128,255), hue_cursor_segments);
+        draw_list->AddCircle(hue_cursor_pos, hue_cursor_rad, IM_COL32_WHITE, hue_cursor_segments);
+
+        // Render SV triangle (rotated according to hue)
+        ImVec2 tra = wheel_center + ImRotate(triangle_pa, cos_hue_angle, sin_hue_angle);
+        ImVec2 trb = wheel_center + ImRotate(triangle_pb, cos_hue_angle, sin_hue_angle);
+        ImVec2 trc = wheel_center + ImRotate(triangle_pc, cos_hue_angle, sin_hue_angle);
+        ImVec2 uv_white = GetFontTexUvWhitePixel();
+        draw_list->PrimReserve(6, 6);
+        draw_list->PrimVtx(tra, uv_white, hue_color32);
+        draw_list->PrimVtx(trb, uv_white, hue_color32);
+        draw_list->PrimVtx(trc, uv_white, IM_COL32_WHITE);
+        draw_list->PrimVtx(tra, uv_white, IM_COL32_BLACK_TRANS);
+        draw_list->PrimVtx(trb, uv_white, IM_COL32_BLACK);
+        draw_list->PrimVtx(trc, uv_white, IM_COL32_BLACK_TRANS);
+        draw_list->AddTriangle(tra, trb, trc, IM_COL32(128,128,128,255), 1.5f);
+        sv_cursor_pos = ImLerp(ImLerp(trc, tra, ImSaturate(S)), trb, ImSaturate(1 - V));
+    }
+    else if (flags & ImGuiColorEditFlags_PickerHueBar)
+    {
+        // Render SV Square
+        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_WHITE, hue_color32, hue_color32, IM_COL32_WHITE);
+        draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_BLACK_TRANS, IM_COL32_BLACK_TRANS, IM_COL32_BLACK, IM_COL32_BLACK);
+        RenderFrameBorder(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), 0.0f);
+        sv_cursor_pos.x = ImClamp((float)(int)(picker_pos.x + ImSaturate(S)     * sv_picker_size + 0.5f), picker_pos.x + 2, picker_pos.x + sv_picker_size - 2); // Sneakily prevent the circle to stick out too much
+        sv_cursor_pos.y = ImClamp((float)(int)(picker_pos.y + ImSaturate(1 - V) * sv_picker_size + 0.5f), picker_pos.y + 2, picker_pos.y + sv_picker_size - 2);
+
+        // Render Hue Bar
+        for (int i = 0; i < 6; ++i)
+            draw_list->AddRectFilledMultiColor(ImVec2(bar0_pos_x, picker_pos.y + i * (sv_picker_size / 6)), ImVec2(bar0_pos_x + bars_width, picker_pos.y + (i + 1) * (sv_picker_size / 6)), hue_colors[i], hue_colors[i], hue_colors[i + 1], hue_colors[i + 1]);
+        float bar0_line_y = (float)(int)(picker_pos.y + H * sv_picker_size + 0.5f);
+        RenderFrameBorder(ImVec2(bar0_pos_x, picker_pos.y), ImVec2(bar0_pos_x + bars_width, picker_pos.y + sv_picker_size), 0.0f);
+        RenderArrowsForVerticalBar(draw_list, ImVec2(bar0_pos_x - 1, bar0_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
+    }
+
+    // Render cursor/preview circle (clamp S/V within 0..1 range because floating points colors may lead HSV values to be out of range)
+    float sv_cursor_rad = value_changed_sv ? 10.0f : 6.0f;
+    draw_list->AddCircleFilled(sv_cursor_pos, sv_cursor_rad, col32_no_alpha, 12);
+    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad+1, IM_COL32(128,128,128,255), 12);
+    draw_list->AddCircle(sv_cursor_pos, sv_cursor_rad, IM_COL32_WHITE, 12);
+
+    // Render alpha bar
+    if (alpha_bar)
+    {
+        float alpha = ImSaturate(col[3]);
+        ImRect bar1_bb(bar1_pos_x, picker_pos.y, bar1_pos_x + bars_width, picker_pos.y + sv_picker_size);
+        RenderColorRectWithAlphaCheckerboard(bar1_bb.Min, bar1_bb.Max, IM_COL32(0,0,0,0), bar1_bb.GetWidth() / 2.0f, ImVec2(0.0f, 0.0f));
+        draw_list->AddRectFilledMultiColor(bar1_bb.Min, bar1_bb.Max, col32_no_alpha, col32_no_alpha, col32_no_alpha & ~IM_COL32_A_MASK, col32_no_alpha & ~IM_COL32_A_MASK);
+        float bar1_line_y = (float)(int)(picker_pos.y + (1.0f - alpha) * sv_picker_size + 0.5f);
+        RenderFrameBorder(bar1_bb.Min, bar1_bb.Max, 0.0f);
+        RenderArrowsForVerticalBar(draw_list, ImVec2(bar1_pos_x - 1, bar1_line_y), ImVec2(bars_triangles_half_sz + 1, bars_triangles_half_sz), bars_width + 2.0f);
+    }
+
+    EndGroup();
+
+    if (value_changed && memcmp(backup_initial_col, col, components * sizeof(float)) == 0)
+        value_changed = false;
+    if (value_changed)
+        MarkItemEdited(window->DC.LastItemId);
+
+    PopID();
+
+    return value_changed;
+}
+
+// A little colored square. Return true when clicked.
+// FIXME: May want to display/ignore the alpha component in the color display? Yet show it in the tooltip.
+// 'desc_id' is not called 'label' because we don't display it next to the button, but only in the tooltip.
+bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFlags flags, ImVec2 size)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiID id = window->GetID(desc_id);
+    float default_size = GetFrameHeight();
+    if (size.x == 0.0f)
+        size.x = default_size;
+    if (size.y == 0.0f)
+        size.y = default_size;
+    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
+    ItemSize(bb, (size.y >= default_size) ? g.Style.FramePadding.y : 0.0f);
+    if (!ItemAdd(bb, id))
+        return false;
+
+    bool hovered, held;
+    bool pressed = ButtonBehavior(bb, id, &hovered, &held);
+
+    if (flags & ImGuiColorEditFlags_NoAlpha)
+        flags &= ~(ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf);
+
+    ImVec4 col_without_alpha(col.x, col.y, col.z, 1.0f);
+    float grid_step = ImMin(size.x, size.y) / 2.99f;
+    float rounding = ImMin(g.Style.FrameRounding, grid_step * 0.5f);
+    ImRect bb_inner = bb;
+    float off = -0.75f; // The border (using Col_FrameBg) tends to look off when color is near-opaque and rounding is enabled. This offset seemed like a good middle ground to reduce those artifacts.
+    bb_inner.Expand(off);
+    if ((flags & ImGuiColorEditFlags_AlphaPreviewHalf) && col.w < 1.0f)
+    {
+        float mid_x = (float)(int)((bb_inner.Min.x + bb_inner.Max.x) * 0.5f + 0.5f);
+        RenderColorRectWithAlphaCheckerboard(ImVec2(bb_inner.Min.x + grid_step, bb_inner.Min.y), bb_inner.Max, GetColorU32(col), grid_step, ImVec2(-grid_step + off, off), rounding, ImDrawCornerFlags_TopRight| ImDrawCornerFlags_BotRight);
+        window->DrawList->AddRectFilled(bb_inner.Min, ImVec2(mid_x, bb_inner.Max.y), GetColorU32(col_without_alpha), rounding, ImDrawCornerFlags_TopLeft|ImDrawCornerFlags_BotLeft);
+    }
+    else
+    {
+        // Because GetColorU32() multiplies by the global style Alpha and we don't want to display a checkerboard if the source code had no alpha
+        ImVec4 col_source = (flags & ImGuiColorEditFlags_AlphaPreview) ? col : col_without_alpha;
+        if (col_source.w < 1.0f)
+            RenderColorRectWithAlphaCheckerboard(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), grid_step, ImVec2(off, off), rounding);
+        else
+            window->DrawList->AddRectFilled(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), rounding, ImDrawCornerFlags_All);
+    }
+    RenderNavHighlight(bb, id);
+    if (g.Style.FrameBorderSize > 0.0f)
+        RenderFrameBorder(bb.Min, bb.Max, rounding);
+    else
+        window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), rounding); // Color button are often in need of some sort of border
+
+    // Drag and Drop Source
+    // NB: The ActiveId test is merely an optional micro-optimization, BeginDragDropSource() does the same test.
+    if (g.ActiveId == id && !(flags & ImGuiColorEditFlags_NoDragDrop) && BeginDragDropSource())
+    {
+        if (flags & ImGuiColorEditFlags_NoAlpha)
+            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F, &col, sizeof(float) * 3, ImGuiCond_Once);
+        else
+            SetDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F, &col, sizeof(float) * 4, ImGuiCond_Once);
+        ColorButton(desc_id, col, flags);
+        SameLine();
+        TextUnformatted("Color");
+        EndDragDropSource();
+    }
+
+    // Tooltip
+    if (!(flags & ImGuiColorEditFlags_NoTooltip) && hovered)
+        ColorTooltip(desc_id, &col.x, flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf));
+
+    if (pressed)
+        MarkItemEdited(id);
+
+    return pressed;
+}
+
+void ImGui::SetColorEditOptions(ImGuiColorEditFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+    if ((flags & ImGuiColorEditFlags__InputsMask) == 0)
+        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__InputsMask;
+    if ((flags & ImGuiColorEditFlags__DataTypeMask) == 0)
+        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__DataTypeMask;
+    if ((flags & ImGuiColorEditFlags__PickerMask) == 0)
+        flags |= ImGuiColorEditFlags__OptionsDefault & ImGuiColorEditFlags__PickerMask;
+    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__InputsMask)));   // Check only 1 option is selected
+    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__DataTypeMask))); // Check only 1 option is selected
+    IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask)));   // Check only 1 option is selected
+    g.ColorEditOptions = flags;
+}
+
+// Note: only access 3 floats if ImGuiColorEditFlags_NoAlpha flag is set.
+void ImGui::ColorTooltip(const char* text, const float* col, ImGuiColorEditFlags flags)
+{
+    ImGuiContext& g = *GImGui;
+
+    int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
+    BeginTooltipEx(0, true);
+
+    const char* text_end = text ? FindRenderedTextEnd(text, NULL) : text;
+    if (text_end > text)
+    {
+        TextUnformatted(text, text_end);
+        Separator();
+    }
+
+    ImVec2 sz(g.FontSize * 3 + g.Style.FramePadding.y * 2, g.FontSize * 3 + g.Style.FramePadding.y * 2);
+    ColorButton("##preview", ImVec4(col[0], col[1], col[2], col[3]), (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf)) | ImGuiColorEditFlags_NoTooltip, sz);
+    SameLine();
+    if (flags & ImGuiColorEditFlags_NoAlpha)
+        Text("#%02X%02X%02X\nR: %d, G: %d, B: %d\n(%.3f, %.3f, %.3f)", cr, cg, cb, cr, cg, cb, col[0], col[1], col[2]);
+    else
+        Text("#%02X%02X%02X%02X\nR:%d, G:%d, B:%d, A:%d\n(%.3f, %.3f, %.3f, %.3f)", cr, cg, cb, ca, cr, cg, cb, ca, col[0], col[1], col[2], col[3]);
+    EndTooltip();
+}
+
+void ImGui::ColorEditOptionsPopup(const float* col, ImGuiColorEditFlags flags)
+{
+    bool allow_opt_inputs = !(flags & ImGuiColorEditFlags__InputsMask);
+    bool allow_opt_datatype = !(flags & ImGuiColorEditFlags__DataTypeMask);
+    if ((!allow_opt_inputs && !allow_opt_datatype) || !BeginPopup("context"))
+        return;
+    ImGuiContext& g = *GImGui;
+    ImGuiColorEditFlags opts = g.ColorEditOptions;
+    if (allow_opt_inputs)
+    {
+        if (RadioButton("RGB", (opts & ImGuiColorEditFlags_RGB) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_RGB;
+        if (RadioButton("HSV", (opts & ImGuiColorEditFlags_HSV) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HSV;
+        if (RadioButton("HEX", (opts & ImGuiColorEditFlags_HEX) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HEX;
+    }
+    if (allow_opt_datatype)
+    {
+        if (allow_opt_inputs) Separator();
+        if (RadioButton("0..255",     (opts & ImGuiColorEditFlags_Uint8) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Uint8;
+        if (RadioButton("0.00..1.00", (opts & ImGuiColorEditFlags_Float) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Float;
+    }
+
+    if (allow_opt_inputs || allow_opt_datatype)
+        Separator();
+    if (Button("Copy as..", ImVec2(-1,0)))
+        OpenPopup("Copy");
+    if (BeginPopup("Copy"))
+    {
+        int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
+        char buf[64];
+        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%.3ff, %.3ff, %.3ff, %.3ff)", col[0], col[1], col[2], (flags & ImGuiColorEditFlags_NoAlpha) ? 1.0f : col[3]);
+        if (Selectable(buf))
+            SetClipboardText(buf);
+        ImFormatString(buf, IM_ARRAYSIZE(buf), "(%d,%d,%d,%d)", cr, cg, cb, ca);
+        if (Selectable(buf))
+            SetClipboardText(buf);
+        if (flags & ImGuiColorEditFlags_NoAlpha)
+            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X", cr, cg, cb);
+        else
+            ImFormatString(buf, IM_ARRAYSIZE(buf), "0x%02X%02X%02X%02X", cr, cg, cb, ca);
+        if (Selectable(buf))
+            SetClipboardText(buf);
+        EndPopup();
+    }
+
+    g.ColorEditOptions = opts;
+    EndPopup();
+}
+
+void ImGui::ColorPickerOptionsPopup(const float* ref_col, ImGuiColorEditFlags flags)
+{
+    bool allow_opt_picker = !(flags & ImGuiColorEditFlags__PickerMask);
+    bool allow_opt_alpha_bar = !(flags & ImGuiColorEditFlags_NoAlpha) && !(flags & ImGuiColorEditFlags_AlphaBar);
+    if ((!allow_opt_picker && !allow_opt_alpha_bar) || !ImGui::BeginPopup("context"))
+        return;
+    ImGuiContext& g = *GImGui;
+    if (allow_opt_picker)
+    {
+        ImVec2 picker_size(g.FontSize * 8, ImMax(g.FontSize * 8 - (ImGui::GetFrameHeight() + g.Style.ItemInnerSpacing.x), 1.0f)); // FIXME: Picker size copied from main picker function
+        ImGui::PushItemWidth(picker_size.x);
+        for (int picker_type = 0; picker_type < 2; picker_type++)
+        {
+            // Draw small/thumbnail version of each picker type (over an invisible button for selection)
+            if (picker_type > 0) ImGui::Separator();
+            ImGui::PushID(picker_type);
+            ImGuiColorEditFlags picker_flags = ImGuiColorEditFlags_NoInputs|ImGuiColorEditFlags_NoOptions|ImGuiColorEditFlags_NoLabel|ImGuiColorEditFlags_NoSidePreview|(flags & ImGuiColorEditFlags_NoAlpha);
+            if (picker_type == 0) picker_flags |= ImGuiColorEditFlags_PickerHueBar;
+            if (picker_type == 1) picker_flags |= ImGuiColorEditFlags_PickerHueWheel;
+            ImVec2 backup_pos = ImGui::GetCursorScreenPos();
+            if (ImGui::Selectable("##selectable", false, 0, picker_size)) // By default, Selectable() is closing popup
+                g.ColorEditOptions = (g.ColorEditOptions & ~ImGuiColorEditFlags__PickerMask) | (picker_flags & ImGuiColorEditFlags__PickerMask);
+            ImGui::SetCursorScreenPos(backup_pos);
+            ImVec4 dummy_ref_col;
+            memcpy(&dummy_ref_col.x, ref_col, sizeof(float) * (picker_flags & ImGuiColorEditFlags_NoAlpha ? 3 : 4));
+            ImGui::ColorPicker4("##dummypicker", &dummy_ref_col.x, picker_flags);
+            ImGui::PopID();
+        }
+        ImGui::PopItemWidth();
+    }
+    if (allow_opt_alpha_bar)
+    {
+        if (allow_opt_picker) ImGui::Separator();
+        ImGui::CheckboxFlags("Alpha Bar", (unsigned int*)&g.ColorEditOptions, ImGuiColorEditFlags_AlphaBar);
+    }
+    ImGui::EndPopup();
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Trees
+// - TreeNode()
+// - TreeNodeV()
+// - TreeNodeEx()
+// - TreeNodeExV()
+// - TreeNodeBehavior() [Internal]  
+// - TreePush()
+// - TreePop()
+// - TreeAdvanceToLabelPos()
+// - GetTreeNodeToLabelSpacing()
+// - SetNextTreeNodeOpen()
+// - CollapsingHeader()
+//-------------------------------------------------------------------------
+
+bool ImGui::TreeNode(const char* str_id, const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    bool is_open = TreeNodeExV(str_id, 0, fmt, args);
+    va_end(args);
+    return is_open;
+}
+
+bool ImGui::TreeNode(const void* ptr_id, const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    bool is_open = TreeNodeExV(ptr_id, 0, fmt, args);
+    va_end(args);
+    return is_open;
+}
+
+bool ImGui::TreeNode(const char* label)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+    return TreeNodeBehavior(window->GetID(label), 0, label, NULL);
+}
+
+bool ImGui::TreeNodeV(const char* str_id, const char* fmt, va_list args)
+{
+    return TreeNodeExV(str_id, 0, fmt, args);
+}
+
+bool ImGui::TreeNodeV(const void* ptr_id, const char* fmt, va_list args)
+{
+    return TreeNodeExV(ptr_id, 0, fmt, args);
+}
+
+bool ImGui::TreeNodeEx(const char* label, ImGuiTreeNodeFlags flags)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    return TreeNodeBehavior(window->GetID(label), flags, label, NULL);
+}
+
+bool ImGui::TreeNodeEx(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    bool is_open = TreeNodeExV(str_id, flags, fmt, args);
+    va_end(args);
+    return is_open;
+}
+
+bool ImGui::TreeNodeEx(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    bool is_open = TreeNodeExV(ptr_id, flags, fmt, args);
+    va_end(args);
+    return is_open;
+}
+
+bool ImGui::TreeNodeExV(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
+    return TreeNodeBehavior(window->GetID(str_id), flags, g.TempBuffer, label_end);
+}
+
+bool ImGui::TreeNodeExV(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const char* label_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
+    return TreeNodeBehavior(window->GetID(ptr_id), flags, g.TempBuffer, label_end);
+}
+
+bool ImGui::TreeNodeBehaviorIsOpen(ImGuiID id, ImGuiTreeNodeFlags flags)
+{
+    if (flags & ImGuiTreeNodeFlags_Leaf)
+        return true;
+
+    // We only write to the tree storage if the user clicks (or explicitly use SetNextTreeNode*** functions)
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    ImGuiStorage* storage = window->DC.StateStorage;
+
+    bool is_open;
+    if (g.NextTreeNodeOpenCond != 0)
+    {
+        if (g.NextTreeNodeOpenCond & ImGuiCond_Always)
+        {
+            is_open = g.NextTreeNodeOpenVal;
+            storage->SetInt(id, is_open);
+        }
+        else
+        {
+            // We treat ImGuiCond_Once and ImGuiCond_FirstUseEver the same because tree node state are not saved persistently.
+            const int stored_value = storage->GetInt(id, -1);
+            if (stored_value == -1)
+            {
+                is_open = g.NextTreeNodeOpenVal;
+                storage->SetInt(id, is_open);
+            }
+            else
+            {
+                is_open = stored_value != 0;
+            }
+        }
+        g.NextTreeNodeOpenCond = 0;
+    }
+    else
+    {
+        is_open = storage->GetInt(id, (flags & ImGuiTreeNodeFlags_DefaultOpen) ? 1 : 0) != 0;
+    }
+
+    // When logging is enabled, we automatically expand tree nodes (but *NOT* collapsing headers.. seems like sensible behavior).
+    // NB- If we are above max depth we still allow manually opened nodes to be logged.
+    if (g.LogEnabled && !(flags & ImGuiTreeNodeFlags_NoAutoOpenOnLog) && window->DC.TreeDepth < g.LogAutoExpandMaxDepth)
+        is_open = true;
+
+    return is_open;
+}
+
+bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* label, const char* label_end)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+    const bool display_frame = (flags & ImGuiTreeNodeFlags_Framed) != 0;
+    const ImVec2 padding = (display_frame || (flags & ImGuiTreeNodeFlags_FramePadding)) ? style.FramePadding : ImVec2(style.FramePadding.x, 0.0f);
+
+    if (!label_end)
+        label_end = FindRenderedTextEnd(label);
+    const ImVec2 label_size = CalcTextSize(label, label_end, false);
+
+    // We vertically grow up to current line height up the typical widget height.
+    const float text_base_offset_y = ImMax(padding.y, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
+    const float frame_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + style.FramePadding.y*2), label_size.y + padding.y*2);
+    ImRect frame_bb = ImRect(window->DC.CursorPos, ImVec2(window->Pos.x + GetContentRegionMax().x, window->DC.CursorPos.y + frame_height));
+    if (display_frame)
+    {
+        // Framed header expand a little outside the default padding
+        frame_bb.Min.x -= (float)(int)(window->WindowPadding.x*0.5f) - 1;
+        frame_bb.Max.x += (float)(int)(window->WindowPadding.x*0.5f) - 1;
+    }
+
+    const float text_offset_x = (g.FontSize + (display_frame ? padding.x*3 : padding.x*2));   // Collapser arrow width + Spacing
+    const float text_width = g.FontSize + (label_size.x > 0.0f ? label_size.x + padding.x*2 : 0.0f);   // Include collapser
+    ItemSize(ImVec2(text_width, frame_height), text_base_offset_y);
+
+    // For regular tree nodes, we arbitrary allow to click past 2 worth of ItemSpacing
+    // (Ideally we'd want to add a flag for the user to specify if we want the hit test to be done up to the right side of the content or not)
+    const ImRect interact_bb = display_frame ? frame_bb : ImRect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + text_width + style.ItemSpacing.x*2, frame_bb.Max.y);
+    bool is_open = TreeNodeBehaviorIsOpen(id, flags);
+
+    // Store a flag for the current depth to tell if we will allow closing this node when navigating one of its child.
+    // For this purpose we essentially compare if g.NavIdIsAlive went from 0 to 1 between TreeNode() and TreePop().
+    // This is currently only support 32 level deep and we are fine with (1 << Depth) overflowing into a zero.
+    if (is_open && !g.NavIdIsAlive && (flags & ImGuiTreeNodeFlags_NavLeftJumpsBackHere) && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
+        window->DC.TreeDepthMayJumpToParentOnPop |= (1 << window->DC.TreeDepth);
+
+    bool item_add = ItemAdd(interact_bb, id);
+    window->DC.LastItemStatusFlags |= ImGuiItemStatusFlags_HasDisplayRect;
+    window->DC.LastItemDisplayRect = frame_bb;
+
+    if (!item_add)
+    {
+        if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
+            TreePushRawID(id);
+        return is_open;
+    }
+
+    // Flags that affects opening behavior:
+    // - 0(default) ..................... single-click anywhere to open
+    // - OpenOnDoubleClick .............. double-click anywhere to open
+    // - OpenOnArrow .................... single-click on arrow to open
+    // - OpenOnDoubleClick|OpenOnArrow .. single-click on arrow or double-click anywhere to open
+    ImGuiButtonFlags button_flags = ImGuiButtonFlags_NoKeyModifiers | ((flags & ImGuiTreeNodeFlags_AllowItemOverlap) ? ImGuiButtonFlags_AllowItemOverlap : 0);
+    if (!(flags & ImGuiTreeNodeFlags_Leaf))
+        button_flags |= ImGuiButtonFlags_PressedOnDragDropHold;
+    if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
+        button_flags |= ImGuiButtonFlags_PressedOnDoubleClick | ((flags & ImGuiTreeNodeFlags_OpenOnArrow) ? ImGuiButtonFlags_PressedOnClickRelease : 0);
+
+    bool hovered, held, pressed = ButtonBehavior(interact_bb, id, &hovered, &held, button_flags);
+    if (!(flags & ImGuiTreeNodeFlags_Leaf))
+    {
+        bool toggled = false;
+        if (pressed)
+        {
+            toggled = !(flags & (ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick)) || (g.NavActivateId == id);
+            if (flags & ImGuiTreeNodeFlags_OpenOnArrow)
+                toggled |= IsMouseHoveringRect(interact_bb.Min, ImVec2(interact_bb.Min.x + text_offset_x, interact_bb.Max.y)) && (!g.NavDisableMouseHover);
+            if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
+                toggled |= g.IO.MouseDoubleClicked[0];
+            if (g.DragDropActive && is_open) // When using Drag and Drop "hold to open" we keep the node highlighted after opening, but never close it again.
+                toggled = false;
+        }
+
+        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Left && is_open)
+        {
+            toggled = true;
+            NavMoveRequestCancel();
+        }
+        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right && !is_open) // If there's something upcoming on the line we may want to give it the priority?
+        {
+            toggled = true;
+            NavMoveRequestCancel();
+        }
+
+        if (toggled)
+        {
+            is_open = !is_open;
+            window->DC.StateStorage->SetInt(id, is_open);
+        }
+    }
+    if (flags & ImGuiTreeNodeFlags_AllowItemOverlap)
+        SetItemAllowOverlap();
+
+    // Render
+    const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
+    const ImVec2 text_pos = frame_bb.Min + ImVec2(text_offset_x, text_base_offset_y);
+    if (display_frame)
+    {
+        // Framed type
+        RenderFrame(frame_bb.Min, frame_bb.Max, col, true, style.FrameRounding);
+        RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
+        RenderArrow(frame_bb.Min + ImVec2(padding.x, text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 1.0f);
+        if (g.LogEnabled)
+        {
+            // NB: '##' is normally used to hide text (as a library-wide feature), so we need to specify the text range to make sure the ## aren't stripped out here.
+            const char log_prefix[] = "\n##";
+            const char log_suffix[] = "##";
+            LogRenderedText(&text_pos, log_prefix, log_prefix+3);
+            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
+            LogRenderedText(&text_pos, log_suffix+1, log_suffix+3);
+        }
+        else
+        {
+            RenderTextClipped(text_pos, frame_bb.Max, label, label_end, &label_size);
+        }
+    }
+    else
+    {
+        // Unframed typed for tree nodes
+        if (hovered || (flags & ImGuiTreeNodeFlags_Selected))
+        {
+            RenderFrame(frame_bb.Min, frame_bb.Max, col, false);
+            RenderNavHighlight(frame_bb, id, ImGuiNavHighlightFlags_TypeThin);
+        }
+
+        if (flags & ImGuiTreeNodeFlags_Bullet)
+            RenderBullet(frame_bb.Min + ImVec2(text_offset_x * 0.5f, g.FontSize*0.50f + text_base_offset_y));
+        else if (!(flags & ImGuiTreeNodeFlags_Leaf))
+            RenderArrow(frame_bb.Min + ImVec2(padding.x, g.FontSize*0.15f + text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 0.70f);
+        if (g.LogEnabled)
+            LogRenderedText(&text_pos, ">");
+        RenderText(text_pos, label, label_end, false);
+    }
+
+    if (is_open && !(flags & ImGuiTreeNodeFlags_NoTreePushOnOpen))
+        TreePushRawID(id);
+    return is_open;
+}
+
+void ImGui::TreePush(const char* str_id)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    Indent();
+    window->DC.TreeDepth++;
+    PushID(str_id ? str_id : "#TreePush");
+}
+
+void ImGui::TreePush(const void* ptr_id)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    Indent();
+    window->DC.TreeDepth++;
+    PushID(ptr_id ? ptr_id : (const void*)"#TreePush");
+}
+
+void ImGui::TreePushRawID(ImGuiID id)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    Indent();
+    window->DC.TreeDepth++;
+    window->IDStack.push_back(id);
+}
+
+void ImGui::TreePop()
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    Unindent();
+
+    window->DC.TreeDepth--;
+    if (g.NavMoveDir == ImGuiDir_Left && g.NavWindow == window && NavMoveRequestButNoResultYet())
+        if (g.NavIdIsAlive && (window->DC.TreeDepthMayJumpToParentOnPop & (1 << window->DC.TreeDepth)))
+        {
+            SetNavID(window->IDStack.back(), g.NavLayer);
+            NavMoveRequestCancel();
+        }
+    window->DC.TreeDepthMayJumpToParentOnPop &= (1 << window->DC.TreeDepth) - 1;
+
+    IM_ASSERT(window->IDStack.Size > 1); // There should always be 1 element in the IDStack (pushed during window creation). If this triggers you called TreePop/PopID too much.
+    PopID();
+}
+
+void ImGui::TreeAdvanceToLabelPos()
+{
+    ImGuiContext& g = *GImGui;
+    g.CurrentWindow->DC.CursorPos.x += GetTreeNodeToLabelSpacing();
+}
+
+// Horizontal distance preceding label when using TreeNode() or Bullet()
+float ImGui::GetTreeNodeToLabelSpacing()
+{
+    ImGuiContext& g = *GImGui;
+    return g.FontSize + (g.Style.FramePadding.x * 2.0f);
+}
+
+void ImGui::SetNextTreeNodeOpen(bool is_open, ImGuiCond cond)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.CurrentWindow->SkipItems)
+        return;
+    g.NextTreeNodeOpenVal = is_open;
+    g.NextTreeNodeOpenCond = cond ? cond : ImGuiCond_Always;
+}
+
+// CollapsingHeader returns true when opened but do not indent nor push into the ID stack (because of the ImGuiTreeNodeFlags_NoTreePushOnOpen flag).
+// This is basically the same as calling TreeNodeEx(label, ImGuiTreeNodeFlags_CollapsingHeader). You can remove the _NoTreePushOnOpen flag if you want behavior closer to normal TreeNode().
+bool ImGui::CollapsingHeader(const char* label, ImGuiTreeNodeFlags flags)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    return TreeNodeBehavior(window->GetID(label), flags | ImGuiTreeNodeFlags_CollapsingHeader, label);
+}
+
+bool ImGui::CollapsingHeader(const char* label, bool* p_open, ImGuiTreeNodeFlags flags)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    if (p_open && !*p_open)
+        return false;
+
+    ImGuiID id = window->GetID(label);
+    bool is_open = TreeNodeBehavior(id, flags | ImGuiTreeNodeFlags_CollapsingHeader | (p_open ? ImGuiTreeNodeFlags_AllowItemOverlap : 0), label);
+    if (p_open)
+    {
+        // Create a small overlapping close button // FIXME: We can evolve this into user accessible helpers to add extra buttons on title bars, headers, etc.
+        ImGuiContext& g = *GImGui;
+        ImGuiItemHoveredDataBackup last_item_backup;
+        float button_radius = g.FontSize * 0.5f;
+        ImVec2 button_center = ImVec2(ImMin(window->DC.LastItemRect.Max.x, window->ClipRect.Max.x) - g.Style.FramePadding.x - button_radius, window->DC.LastItemRect.GetCenter().y);
+        if (CloseButton(window->GetID((void*)(intptr_t)(id+1)), button_center, button_radius))
+            *p_open = false;
+        last_item_backup.Restore();
+    }
+
+    return is_open;
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Selectables
+// - Selectable()
+//-------------------------------------------------------------------------
+
+// Tip: pass an empty label (e.g. "##dummy") then you can use the space to draw other text or image.
+// But you need to make sure the ID is unique, e.g. enclose calls in PushID/PopID or use ##unique_id.
+bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+
+    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet) // FIXME-OPT: Avoid if vertically clipped.
+        PopClipRect();
+
+    ImGuiID id = window->GetID(label);
+    ImVec2 label_size = CalcTextSize(label, NULL, true);
+    ImVec2 size(size_arg.x != 0.0f ? size_arg.x : label_size.x, size_arg.y != 0.0f ? size_arg.y : label_size.y);
+    ImVec2 pos = window->DC.CursorPos;
+    pos.y += window->DC.CurrentLineTextBaseOffset;
+    ImRect bb_inner(pos, pos + size);
+    ItemSize(bb_inner);
+
+    // Fill horizontal space.
+    ImVec2 window_padding = window->WindowPadding;
+    float max_x = (flags & ImGuiSelectableFlags_SpanAllColumns) ? GetWindowContentRegionMax().x : GetContentRegionMax().x;
+    float w_draw = ImMax(label_size.x, window->Pos.x + max_x - window_padding.x - window->DC.CursorPos.x);
+    ImVec2 size_draw((size_arg.x != 0 && !(flags & ImGuiSelectableFlags_DrawFillAvailWidth)) ? size_arg.x : w_draw, size_arg.y != 0.0f ? size_arg.y : size.y);
+    ImRect bb(pos, pos + size_draw);
+    if (size_arg.x == 0.0f || (flags & ImGuiSelectableFlags_DrawFillAvailWidth))
+        bb.Max.x += window_padding.x;
+
+    // Selectables are tightly packed together, we extend the box to cover spacing between selectable.
+    float spacing_L = (float)(int)(style.ItemSpacing.x * 0.5f);
+    float spacing_U = (float)(int)(style.ItemSpacing.y * 0.5f);
+    float spacing_R = style.ItemSpacing.x - spacing_L;
+    float spacing_D = style.ItemSpacing.y - spacing_U;
+    bb.Min.x -= spacing_L;
+    bb.Min.y -= spacing_U;
+    bb.Max.x += spacing_R;
+    bb.Max.y += spacing_D;
+    if (!ItemAdd(bb, (flags & ImGuiSelectableFlags_Disabled) ? 0 : id))
+    {
+        if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
+            PushColumnClipRect();
+        return false;
+    }
+
+    // We use NoHoldingActiveID on menus so user can click and _hold_ on a menu then drag to browse child entries
+    ImGuiButtonFlags button_flags = 0;
+    if (flags & ImGuiSelectableFlags_NoHoldingActiveID) button_flags |= ImGuiButtonFlags_NoHoldingActiveID;
+    if (flags & ImGuiSelectableFlags_PressedOnClick) button_flags |= ImGuiButtonFlags_PressedOnClick;
+    if (flags & ImGuiSelectableFlags_PressedOnRelease) button_flags |= ImGuiButtonFlags_PressedOnRelease;
+    if (flags & ImGuiSelectableFlags_Disabled) button_flags |= ImGuiButtonFlags_Disabled;
+    if (flags & ImGuiSelectableFlags_AllowDoubleClick) button_flags |= ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnDoubleClick;
+    bool hovered, held;
+    bool pressed = ButtonBehavior(bb, id, &hovered, &held, button_flags);
+    if (flags & ImGuiSelectableFlags_Disabled)
+        selected = false;
+
+    // Hovering selectable with mouse updates NavId accordingly so navigation can be resumed with gamepad/keyboard (this doesn't happen on most widgets)
+    if (pressed || hovered)
+        if (!g.NavDisableMouseHover && g.NavWindow == window && g.NavLayer == window->DC.NavLayerCurrent)
+        {
+            g.NavDisableHighlight = true;
+            SetNavID(id, window->DC.NavLayerCurrent);
+        }
+    if (pressed)
+        MarkItemEdited(id);
+
+    // Render
+    if (hovered || selected)
+    {
+        const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
+        RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
+        RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_TypeThin | ImGuiNavHighlightFlags_NoRounding);
+    }
+
+    if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
+    {
+        PushColumnClipRect();
+        bb.Max.x -= (GetContentRegionMax().x - max_x);
+    }
+
+    if (flags & ImGuiSelectableFlags_Disabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
+    RenderTextClipped(bb_inner.Min, bb.Max, label, NULL, &label_size, ImVec2(0.0f,0.0f));
+    if (flags & ImGuiSelectableFlags_Disabled) PopStyleColor();
+
+    // Automatically close popups
+    if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_DontClosePopups) && !(window->DC.ItemFlags & ImGuiItemFlags_SelectableDontClosePopup))
+        CloseCurrentPopup();
+    return pressed;
+}
+
+bool ImGui::Selectable(const char* label, bool* p_selected, ImGuiSelectableFlags flags, const ImVec2& size_arg)
+{
+    if (Selectable(label, *p_selected, flags, size_arg))
+    {
+        *p_selected = !*p_selected;
+        return true;
+    }
+    return false;
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: List Box
+// - ListBox()
+// - ListBoxHeader()
+// - ListBoxFooter()
+//-------------------------------------------------------------------------
+
+// FIXME: Rename to BeginListBox()
+// Helper to calculate the size of a listbox and display a label on the right.
+// Tip: To have a list filling the entire window width, PushItemWidth(-1) and pass an empty label "##empty"
+bool ImGui::ListBoxHeader(const char* label, const ImVec2& size_arg)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    const ImGuiStyle& style = GetStyle();
+    const ImGuiID id = GetID(label);
+    const ImVec2 label_size = CalcTextSize(label, NULL, true);
+
+    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
+    ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), GetTextLineHeightWithSpacing() * 7.4f + style.ItemSpacing.y);
+    ImVec2 frame_size = ImVec2(size.x, ImMax(size.y, label_size.y));
+    ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + frame_size);
+    ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f));
+    window->DC.LastItemRect = bb; // Forward storage for ListBoxFooter.. dodgy.
+
+    BeginGroup();
+    if (label_size.x > 0)
+        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
+
+    BeginChildFrame(id, frame_bb.GetSize());
+    return true;
+}
+
+// FIXME: Rename to BeginListBox()
+bool ImGui::ListBoxHeader(const char* label, int items_count, int height_in_items)
+{
+    // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar.
+    // We don't add +0.40f if items_count <= height_in_items. It is slightly dodgy, because it means a dynamic list of items will make the widget resize occasionally when it crosses that size.
+    // I am expecting that someone will come and complain about this behavior in a remote future, then we can advise on a better solution.
+    if (height_in_items < 0)
+        height_in_items = ImMin(items_count, 7);
+    float height_in_items_f = height_in_items < items_count ? (height_in_items + 0.40f) : (height_in_items + 0.00f);
+
+    // We include ItemSpacing.y so that a list sized for the exact number of items doesn't make a scrollbar appears. We could also enforce that by passing a flag to BeginChild().
+    ImVec2 size;
+    size.x = 0.0f;
+    size.y = GetTextLineHeightWithSpacing() * height_in_items_f + GetStyle().ItemSpacing.y;
+    return ListBoxHeader(label, size);
+}
+
+// FIXME: Rename to EndListBox()
+void ImGui::ListBoxFooter()
+{
+    ImGuiWindow* parent_window = GetCurrentWindow()->ParentWindow;
+    const ImRect bb = parent_window->DC.LastItemRect;
+    const ImGuiStyle& style = GetStyle();
+
+    EndChildFrame();
+
+    // Redeclare item size so that it includes the label (we have stored the full size in LastItemRect)
+    // We call SameLine() to restore DC.CurrentLine* data
+    SameLine();
+    parent_window->DC.CursorPos = bb.Min;
+    ItemSize(bb, style.FramePadding.y);
+    EndGroup();
+}
+
+bool ImGui::ListBox(const char* label, int* current_item, const char* const items[], int items_count, int height_items)
+{
+    const bool value_changed = ListBox(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_items);
+    return value_changed;
+}
+
+bool ImGui::ListBox(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int height_in_items)
+{
+    if (!ListBoxHeader(label, items_count, height_in_items))
+        return false;
+
+    // Assume all items have even height (= 1 line of text). If you need items of different or variable sizes you can create a custom version of ListBox() in your code without using the clipper.
+    ImGuiContext& g = *GImGui;
+    bool value_changed = false;
+    ImGuiListClipper clipper(items_count, GetTextLineHeightWithSpacing()); // We know exactly our line height here so we pass it as a minor optimization, but generally you don't need to.
+    while (clipper.Step())
+        for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++)
+        {
+            const bool item_selected = (i == *current_item);
+            const char* item_text;
+            if (!items_getter(data, i, &item_text))
+                item_text = "*Unknown item*";
+
+            PushID(i);
+            if (Selectable(item_text, item_selected))
+            {
+                *current_item = i;
+                value_changed = true;
+            }
+            if (item_selected)
+                SetItemDefaultFocus();
+            PopID();
+        }
+    ListBoxFooter();
+    if (value_changed)
+        MarkItemEdited(g.CurrentWindow->DC.LastItemId);
+
+    return value_changed;
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Data Plotting
+// - PlotEx() [Internal]
+// - PlotLines()
+// - PlotHistogram()
+//-------------------------------------------------------------------------
+
+void ImGui::PlotEx(ImGuiPlotType plot_type, const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+
+    const ImVec2 label_size = CalcTextSize(label, NULL, true);
+    if (graph_size.x == 0.0f)
+        graph_size.x = CalcItemWidth();
+    if (graph_size.y == 0.0f)
+        graph_size.y = label_size.y + (style.FramePadding.y * 2);
+
+    const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(graph_size.x, graph_size.y));
+    const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding);
+    const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0));
+    ItemSize(total_bb, style.FramePadding.y);
+    if (!ItemAdd(total_bb, 0, &frame_bb))
+        return;
+    const bool hovered = ItemHoverable(inner_bb, 0);
+
+    // Determine scale from values if not specified
+    if (scale_min == FLT_MAX || scale_max == FLT_MAX)
+    {
+        float v_min = FLT_MAX;
+        float v_max = -FLT_MAX;
+        for (int i = 0; i < values_count; i++)
+        {
+            const float v = values_getter(data, i);
+            v_min = ImMin(v_min, v);
+            v_max = ImMax(v_max, v);
+        }
+        if (scale_min == FLT_MAX)
+            scale_min = v_min;
+        if (scale_max == FLT_MAX)
+            scale_max = v_max;
+    }
+
+    RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
+
+    if (values_count > 0)
+    {
+        int res_w = ImMin((int)graph_size.x, values_count) + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
+        int item_count = values_count + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
+
+        // Tooltip on hover
+        int v_hovered = -1;
+        if (hovered)
+        {
+            const float t = ImClamp((g.IO.MousePos.x - inner_bb.Min.x) / (inner_bb.Max.x - inner_bb.Min.x), 0.0f, 0.9999f);
+            const int v_idx = (int)(t * item_count);
+            IM_ASSERT(v_idx >= 0 && v_idx < values_count);
+
+            const float v0 = values_getter(data, (v_idx + values_offset) % values_count);
+            const float v1 = values_getter(data, (v_idx + 1 + values_offset) % values_count);
+            if (plot_type == ImGuiPlotType_Lines)
+                SetTooltip("%d: %8.4g\n%d: %8.4g", v_idx, v0, v_idx+1, v1);
+            else if (plot_type == ImGuiPlotType_Histogram)
+                SetTooltip("%d: %8.4g", v_idx, v0);
+            v_hovered = v_idx;
+        }
+
+        const float t_step = 1.0f / (float)res_w;
+        const float inv_scale = (scale_min == scale_max) ? 0.0f : (1.0f / (scale_max - scale_min));
+
+        float v0 = values_getter(data, (0 + values_offset) % values_count);
+        float t0 = 0.0f;
+        ImVec2 tp0 = ImVec2( t0, 1.0f - ImSaturate((v0 - scale_min) * inv_scale) );                       // Point in the normalized space of our target rectangle
+        float histogram_zero_line_t = (scale_min * scale_max < 0.0f) ? (-scale_min * inv_scale) : (scale_min < 0.0f ? 0.0f : 1.0f);   // Where does the zero line stands
+
+        const ImU32 col_base = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLines : ImGuiCol_PlotHistogram);
+        const ImU32 col_hovered = GetColorU32((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLinesHovered : ImGuiCol_PlotHistogramHovered);
+
+        for (int n = 0; n < res_w; n++)
+        {
+            const float t1 = t0 + t_step;
+            const int v1_idx = (int)(t0 * item_count + 0.5f);
+            IM_ASSERT(v1_idx >= 0 && v1_idx < values_count);
+            const float v1 = values_getter(data, (v1_idx + values_offset + 1) % values_count);
+            const ImVec2 tp1 = ImVec2( t1, 1.0f - ImSaturate((v1 - scale_min) * inv_scale) );
+
+            // NB: Draw calls are merged together by the DrawList system. Still, we should render our batch are lower level to save a bit of CPU.
+            ImVec2 pos0 = ImLerp(inner_bb.Min, inner_bb.Max, tp0);
+            ImVec2 pos1 = ImLerp(inner_bb.Min, inner_bb.Max, (plot_type == ImGuiPlotType_Lines) ? tp1 : ImVec2(tp1.x, histogram_zero_line_t));
+            if (plot_type == ImGuiPlotType_Lines)
+            {
+                window->DrawList->AddLine(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
+            }
+            else if (plot_type == ImGuiPlotType_Histogram)
+            {
+                if (pos1.x >= pos0.x + 2.0f)
+                    pos1.x -= 1.0f;
+                window->DrawList->AddRectFilled(pos0, pos1, v_hovered == v1_idx ? col_hovered : col_base);
+            }
+
+            t0 = t1;
+            tp0 = tp1;
+        }
+    }
+
+    // Text overlay
+    if (overlay_text)
+        RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, overlay_text, NULL, NULL, ImVec2(0.5f,0.0f));
+
+    if (label_size.x > 0.0f)
+        RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
+}
+
+struct ImGuiPlotArrayGetterData
+{
+    const float* Values;
+    int Stride;
+
+    ImGuiPlotArrayGetterData(const float* values, int stride) { Values = values; Stride = stride; }
+};
+
+static float Plot_ArrayGetter(void* data, int idx)
+{
+    ImGuiPlotArrayGetterData* plot_data = (ImGuiPlotArrayGetterData*)data;
+    const float v = *(const float*)(const void*)((const unsigned char*)plot_data->Values + (size_t)idx * plot_data->Stride);
+    return v;
+}
+
+void ImGui::PlotLines(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
+{
+    ImGuiPlotArrayGetterData data(values, stride);
+    PlotEx(ImGuiPlotType_Lines, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
+}
+
+void ImGui::PlotLines(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
+{
+    PlotEx(ImGuiPlotType_Lines, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
+}
+
+void ImGui::PlotHistogram(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, int stride)
+{
+    ImGuiPlotArrayGetterData data(values, stride);
+    PlotEx(ImGuiPlotType_Histogram, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
+}
+
+void ImGui::PlotHistogram(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size)
+{
+    PlotEx(ImGuiPlotType_Histogram, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size);
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Value() helpers
+// - Value()
+//-------------------------------------------------------------------------
+
+void ImGui::Value(const char* prefix, bool b)
+{
+    Text("%s: %s", prefix, (b ? "true" : "false"));
+}
+
+void ImGui::Value(const char* prefix, int v)
+{
+    Text("%s: %d", prefix, v);
+}
+
+void ImGui::Value(const char* prefix, unsigned int v)
+{
+    Text("%s: %d", prefix, v);
+}
+
+void ImGui::Value(const char* prefix, float v, const char* float_format)
+{
+    if (float_format)
+    {
+        char fmt[64];
+        ImFormatString(fmt, IM_ARRAYSIZE(fmt), "%%s: %s", float_format);
+        Text(fmt, prefix, v);
+    }
+    else
+    {
+        Text("%s: %.3f", prefix, v);
+    }
+}
+
+//-------------------------------------------------------------------------
+// WIDGETS: Menus
+// - ImGuiMenuColumns
+// - BeginMainMenuBar()
+// - EndMainMenuBar()
+// - BeginMenuBar()
+// - EndMenuBar()
+// - BeginMenu()
+// - EndMenu()
+// - MenuItem()
+//-------------------------------------------------------------------------
+
+// Helpers for internal use
+ImGuiMenuColumns::ImGuiMenuColumns()
+{
+    Count = 0;
+    Spacing = Width = NextWidth = 0.0f;
+    memset(Pos, 0, sizeof(Pos));
+    memset(NextWidths, 0, sizeof(NextWidths));
+}
+
+void ImGuiMenuColumns::Update(int count, float spacing, bool clear)
+{
+    IM_ASSERT(Count <= IM_ARRAYSIZE(Pos));
+    Count = count;
+    Width = NextWidth = 0.0f;
+    Spacing = spacing;
+    if (clear) memset(NextWidths, 0, sizeof(NextWidths));
+    for (int i = 0; i < Count; i++)
+    {
+        if (i > 0 && NextWidths[i] > 0.0f)
+            Width += Spacing;
+        Pos[i] = (float)(int)Width;
+        Width += NextWidths[i];
+        NextWidths[i] = 0.0f;
+    }
+}
+
+float ImGuiMenuColumns::DeclColumns(float w0, float w1, float w2) // not using va_arg because they promote float to double
+{
+    NextWidth = 0.0f;
+    NextWidths[0] = ImMax(NextWidths[0], w0);
+    NextWidths[1] = ImMax(NextWidths[1], w1);
+    NextWidths[2] = ImMax(NextWidths[2], w2);
+    for (int i = 0; i < 3; i++)
+        NextWidth += NextWidths[i] + ((i > 0 && NextWidths[i] > 0.0f) ? Spacing : 0.0f);
+    return ImMax(Width, NextWidth);
+}
+
+float ImGuiMenuColumns::CalcExtraSpace(float avail_w)
+{
+    return ImMax(0.0f, avail_w - Width);
+}
+
+// For the main menu bar, which cannot be moved, we honor g.Style.DisplaySafeAreaPadding to ensure text can be visible on a TV set.
+bool ImGui::BeginMainMenuBar()
+{
+    ImGuiContext& g = *GImGui;
+    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(g.Style.DisplaySafeAreaPadding.x, ImMax(g.Style.DisplaySafeAreaPadding.y - g.Style.FramePadding.y, 0.0f));
+    SetNextWindowPos(ImVec2(0.0f, 0.0f));
+    SetNextWindowSize(ImVec2(g.IO.DisplaySize.x, g.NextWindowData.MenuBarOffsetMinVal.y + g.FontBaseSize + g.Style.FramePadding.y));
+    PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
+    PushStyleVar(ImGuiStyleVar_WindowMinSize, ImVec2(0,0));
+    ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_MenuBar;
+    bool is_open = Begin("##MainMenuBar", NULL, window_flags) && BeginMenuBar();
+    PopStyleVar(2);
+    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(0.0f, 0.0f);
+    if (!is_open)
+    {
+        End();
+        return false;
+    }
+    return true;
+}
+
+void ImGui::EndMainMenuBar()
+{
+    EndMenuBar();
+
+    // When the user has left the menu layer (typically: closed menus through activation of an item), we restore focus to the previous window
+    ImGuiContext& g = *GImGui;
+    if (g.CurrentWindow == g.NavWindow && g.NavLayer == 0)
+        FocusFrontMostActiveWindowIgnoringOne(g.NavWindow);
+
+    End();
+}
+
+bool ImGui::BeginMenuBar()
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+    if (!(window->Flags & ImGuiWindowFlags_MenuBar))
+        return false;
+
+    IM_ASSERT(!window->DC.MenuBarAppending);
+    BeginGroup(); // Backup position on layer 0
+    PushID("##menubar");
+
+    // We don't clip with current window clipping rectangle as it is already set to the area below. However we clip with window full rect.
+    // We remove 1 worth of rounding to Max.x to that text in long menus and small windows don't tend to display over the lower-right rounded area, which looks particularly glitchy.
+    ImRect bar_rect = window->MenuBarRect();
+    ImRect clip_rect(ImFloor(bar_rect.Min.x + 0.5f), ImFloor(bar_rect.Min.y + window->WindowBorderSize + 0.5f), ImFloor(ImMax(bar_rect.Min.x, bar_rect.Max.x - window->WindowRounding) + 0.5f), ImFloor(bar_rect.Max.y + 0.5f));
+    clip_rect.ClipWith(window->OuterRectClipped);
+    PushClipRect(clip_rect.Min, clip_rect.Max, false);
+
+    window->DC.CursorPos = ImVec2(bar_rect.Min.x + window->DC.MenuBarOffset.x, bar_rect.Min.y + window->DC.MenuBarOffset.y);
+    window->DC.LayoutType = ImGuiLayoutType_Horizontal;
+    window->DC.NavLayerCurrent++;
+    window->DC.NavLayerCurrentMask <<= 1;
+    window->DC.MenuBarAppending = true;
+    AlignTextToFramePadding();
+    return true;
+}
+
+void ImGui::EndMenuBar()
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return;
+    ImGuiContext& g = *GImGui;
+
+    // Nav: When a move request within one of our child menu failed, capture the request to navigate among our siblings.
+    if (NavMoveRequestButNoResultYet() && (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right) && (g.NavWindow->Flags & ImGuiWindowFlags_ChildMenu))
+    {
+        ImGuiWindow* nav_earliest_child = g.NavWindow;
+        while (nav_earliest_child->ParentWindow && (nav_earliest_child->ParentWindow->Flags & ImGuiWindowFlags_ChildMenu))
+            nav_earliest_child = nav_earliest_child->ParentWindow;
+        if (nav_earliest_child->ParentWindow == window && nav_earliest_child->DC.ParentLayoutType == ImGuiLayoutType_Horizontal && g.NavMoveRequestForward == ImGuiNavForward_None)
+        {
+            // To do so we claim focus back, restore NavId and then process the movement request for yet another frame.
+            // This involve a one-frame delay which isn't very problematic in this situation. We could remove it by scoring in advance for multiple window (probably not worth the hassle/cost)
+            IM_ASSERT(window->DC.NavLayerActiveMaskNext & 0x02); // Sanity check
+            FocusWindow(window);
+            SetNavIDWithRectRel(window->NavLastIds[1], 1, window->NavRectRel[1]);
+            g.NavLayer = 1;
+            g.NavDisableHighlight = true; // Hide highlight for the current frame so we don't see the intermediary selection.
+            g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;
+            NavMoveRequestCancel();
+        }
+    }
+
+    IM_ASSERT(window->Flags & ImGuiWindowFlags_MenuBar);
+    IM_ASSERT(window->DC.MenuBarAppending);
+    PopClipRect();
+    PopID();
+    window->DC.MenuBarOffset.x = window->DC.CursorPos.x - window->MenuBarRect().Min.x; // Save horizontal position so next append can reuse it. This is kinda equivalent to a per-layer CursorPos.
+    window->DC.GroupStack.back().AdvanceCursor = false;
+    EndGroup(); // Restore position on layer 0
+    window->DC.LayoutType = ImGuiLayoutType_Vertical;
+    window->DC.NavLayerCurrent--;
+    window->DC.NavLayerCurrentMask >>= 1;
+    window->DC.MenuBarAppending = false;
+}
+
+bool ImGui::BeginMenu(const char* label, bool enabled)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    const ImGuiStyle& style = g.Style;
+    const ImGuiID id = window->GetID(label);
+
+    ImVec2 label_size = CalcTextSize(label, NULL, true);
+
+    bool pressed;
+    bool menu_is_open = IsPopupOpen(id);
+    bool menuset_is_open = !(window->Flags & ImGuiWindowFlags_Popup) && (g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].OpenParentId == window->IDStack.back());
+    ImGuiWindow* backed_nav_window = g.NavWindow;
+    if (menuset_is_open)
+        g.NavWindow = window;  // Odd hack to allow hovering across menus of a same menu-set (otherwise we wouldn't be able to hover parent)
+
+    // The reference position stored in popup_pos will be used by Begin() to find a suitable position for the child menu (using FindBestWindowPosForPopup).
+    ImVec2 popup_pos, pos = window->DC.CursorPos;
+    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
+    {
+        // Menu inside an horizontal menu bar
+        // Selectable extend their highlight by half ItemSpacing in each direction.
+        // For ChildMenu, the popup position will be overwritten by the call to FindBestWindowPosForPopup() in Begin()
+        popup_pos = ImVec2(pos.x - window->WindowPadding.x, pos.y - style.FramePadding.y + window->MenuBarHeight());
+        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
+        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
+        float w = label_size.x;
+        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
+        PopStyleVar();
+        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
+    }
+    else
+    {
+        // Menu inside a menu
+        popup_pos = ImVec2(pos.x, pos.y - style.WindowPadding.y);
+        float w = window->MenuColumns.DeclColumns(label_size.x, 0.0f, (float)(int)(g.FontSize * 1.20f)); // Feedback to next frame
+        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
+        pressed = Selectable(label, menu_is_open, ImGuiSelectableFlags_NoHoldingActiveID | ImGuiSelectableFlags_PressedOnClick | ImGuiSelectableFlags_DontClosePopups | ImGuiSelectableFlags_DrawFillAvailWidth | (!enabled ? ImGuiSelectableFlags_Disabled : 0), ImVec2(w, 0.0f));
+        if (!enabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
+        RenderArrow(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.30f, 0.0f), ImGuiDir_Right);
+        if (!enabled) PopStyleColor();
+    }
+
+    const bool hovered = enabled && ItemHoverable(window->DC.LastItemRect, id);
+    if (menuset_is_open)
+        g.NavWindow = backed_nav_window;
+
+    bool want_open = false, want_close = false;
+    if (window->DC.LayoutType == ImGuiLayoutType_Vertical) // (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
+    {
+        // Implement http://bjk5.com/post/44698559168/breaking-down-amazons-mega-dropdown to avoid using timers, so menus feels more reactive.
+        bool moving_within_opened_triangle = false;
+        if (g.HoveredWindow == window && g.OpenPopupStack.Size > g.CurrentPopupStack.Size && g.OpenPopupStack[g.CurrentPopupStack.Size].ParentWindow == window && !(window->Flags & ImGuiWindowFlags_MenuBar))
+        {
+            if (ImGuiWindow* next_window = g.OpenPopupStack[g.CurrentPopupStack.Size].Window)
+            {
+                ImRect next_window_rect = next_window->Rect();
+                ImVec2 ta = g.IO.MousePos - g.IO.MouseDelta;
+                ImVec2 tb = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetTL() : next_window_rect.GetTR();
+                ImVec2 tc = (window->Pos.x < next_window->Pos.x) ? next_window_rect.GetBL() : next_window_rect.GetBR();
+                float extra = ImClamp(ImFabs(ta.x - tb.x) * 0.30f, 5.0f, 30.0f); // add a bit of extra slack.
+                ta.x += (window->Pos.x < next_window->Pos.x) ? -0.5f : +0.5f;   // to avoid numerical issues
+                tb.y = ta.y + ImMax((tb.y - extra) - ta.y, -100.0f);            // triangle is maximum 200 high to limit the slope and the bias toward large sub-menus // FIXME: Multiply by fb_scale?
+                tc.y = ta.y + ImMin((tc.y + extra) - ta.y, +100.0f);
+                moving_within_opened_triangle = ImTriangleContainsPoint(ta, tb, tc, g.IO.MousePos);
+                //window->DrawList->PushClipRectFullScreen(); window->DrawList->AddTriangleFilled(ta, tb, tc, moving_within_opened_triangle ? IM_COL32(0,128,0,128) : IM_COL32(128,0,0,128)); window->DrawList->PopClipRect(); // Debug
+            }
+        }
+
+        want_close = (menu_is_open && !hovered && g.HoveredWindow == window && g.HoveredIdPreviousFrame != 0 && g.HoveredIdPreviousFrame != id && !moving_within_opened_triangle);
+        want_open = (!menu_is_open && hovered && !moving_within_opened_triangle) || (!menu_is_open && hovered && pressed);
+
+        if (g.NavActivateId == id)
+        {
+            want_close = menu_is_open;
+            want_open = !menu_is_open;
+        }
+        if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Right) // Nav-Right to open
+        {
+            want_open = true;
+            NavMoveRequestCancel();
+        }
+    }
+    else
+    {
+        // Menu bar
+        if (menu_is_open && pressed && menuset_is_open) // Click an open menu again to close it
+        {
+            want_close = true;
+            want_open = menu_is_open = false;
+        }
+        else if (pressed || (hovered && menuset_is_open && !menu_is_open)) // First click to open, then hover to open others
+        {
+            want_open = true;
+        }
+        else if (g.NavId == id && g.NavMoveRequest && g.NavMoveDir == ImGuiDir_Down) // Nav-Down to open
+        {
+            want_open = true;
+            NavMoveRequestCancel();
+        }
+    }
+
+    if (!enabled) // explicitly close if an open menu becomes disabled, facilitate users code a lot in pattern such as 'if (BeginMenu("options", has_object)) { ..use object.. }'
+        want_close = true;
+    if (want_close && IsPopupOpen(id))
+        ClosePopupToLevel(g.CurrentPopupStack.Size);
+
+    if (!menu_is_open && want_open && g.OpenPopupStack.Size > g.CurrentPopupStack.Size)
+    {
+        // Don't recycle same menu level in the same frame, first close the other menu and yield for a frame.
+        OpenPopup(label);
+        return false;
+    }
+
+    menu_is_open |= want_open;
+    if (want_open)
+        OpenPopup(label);
+
+    if (menu_is_open)
+    {
+        // Sub-menus are ChildWindow so that mouse can be hovering across them (otherwise top-most popup menu would steal focus and not allow hovering on parent menu)
+        SetNextWindowPos(popup_pos, ImGuiCond_Always);
+        ImGuiWindowFlags flags = ImGuiWindowFlags_ChildMenu | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoNavFocus;
+        if (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
+            flags |= ImGuiWindowFlags_ChildWindow;
+        menu_is_open = BeginPopupEx(id, flags); // menu_is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
+    }
+
+    return menu_is_open;
+}
+
+void ImGui::EndMenu()
+{
+    // Nav: When a left move request _within our child menu_ failed, close the menu.
+    // A menu doesn't close itself because EndMenuBar() wants the catch the last Left<>Right inputs.
+    // However, it means that with the current code, a BeginMenu() from outside another menu or a menu-bar won't be closable with the Left direction.
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
+    if (g.NavWindow && g.NavWindow->ParentWindow == window && g.NavMoveDir == ImGuiDir_Left && NavMoveRequestButNoResultYet() && window->DC.LayoutType == ImGuiLayoutType_Vertical)
+    {
+        ClosePopupToLevel(g.OpenPopupStack.Size - 1);
+        NavMoveRequestCancel();
+    }
+
+    EndPopup();
+}
+
+bool ImGui::MenuItem(const char* label, const char* shortcut, bool selected, bool enabled)
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return false;
+
+    ImGuiContext& g = *GImGui;
+    ImGuiStyle& style = g.Style;
+    ImVec2 pos = window->DC.CursorPos;
+    ImVec2 label_size = CalcTextSize(label, NULL, true);
+
+    ImGuiSelectableFlags flags = ImGuiSelectableFlags_PressedOnRelease | (enabled ? 0 : ImGuiSelectableFlags_Disabled);
+    bool pressed;
+    if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
+    {
+        // Mimic the exact layout spacing of BeginMenu() to allow MenuItem() inside a menu bar, which is a little misleading but may be useful
+        // Note that in this situation we render neither the shortcut neither the selected tick mark
+        float w = label_size.x;
+        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * 0.5f);
+        PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
+        pressed = Selectable(label, false, flags, ImVec2(w, 0.0f));
+        PopStyleVar();
+        window->DC.CursorPos.x += (float)(int)(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
+    }
+    else
+    {
+        ImVec2 shortcut_size = shortcut ? CalcTextSize(shortcut, NULL) : ImVec2(0.0f, 0.0f);
+        float w = window->MenuColumns.DeclColumns(label_size.x, shortcut_size.x, (float)(int)(g.FontSize * 1.20f)); // Feedback for next frame
+        float extra_w = ImMax(0.0f, GetContentRegionAvail().x - w);
+        pressed = Selectable(label, false, flags | ImGuiSelectableFlags_DrawFillAvailWidth, ImVec2(w, 0.0f));
+        if (shortcut_size.x > 0.0f)
+        {
+            PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
+            RenderText(pos + ImVec2(window->MenuColumns.Pos[1] + extra_w, 0.0f), shortcut, NULL, false);
+            PopStyleColor();
+        }
+        if (selected)
+            RenderCheckMark(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.40f, g.FontSize * 0.134f * 0.5f), GetColorU32(enabled ? ImGuiCol_Text : ImGuiCol_TextDisabled), g.FontSize  * 0.866f);
+    }
+    return pressed;
+}
+
+bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected, bool enabled)
+{
+    if (MenuItem(label, shortcut, p_selected ? *p_selected : false, enabled))
+    {
+        if (p_selected)
+            *p_selected = !*p_selected;
+        return true;
+    }
+    return false;
+}
+